From f0e54b6087de9571ec61c189d6c378b81edbe3b2 Mon Sep 17 00:00:00 2001 From: Kemeng Shi Date: Fri, 5 Jan 2024 17:21:02 +0800 Subject: ext4: remove 'needed' in trace_ext4_discard_preallocations As 'needed' to trace_ext4_discard_preallocations is always 0 which is meaningless. Just remove it. Signed-off-by: Kemeng Shi Suggested-by: Jan Kara Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20240105092102.496631-10-shikemeng@huaweicloud.com Signed-off-by: Theodore Ts'o --- include/trace/events/ext4.h | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'include') diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 65029dfb92fb..a697f4b77162 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -772,15 +772,14 @@ TRACE_EVENT(ext4_mb_release_group_pa, ); TRACE_EVENT(ext4_discard_preallocations, - TP_PROTO(struct inode *inode, unsigned int len, unsigned int needed), + TP_PROTO(struct inode *inode, unsigned int len), - TP_ARGS(inode, len, needed), + TP_ARGS(inode, len), TP_STRUCT__entry( __field( dev_t, dev ) __field( ino_t, ino ) __field( unsigned int, len ) - __field( unsigned int, needed ) ), @@ -788,13 +787,11 @@ TRACE_EVENT(ext4_discard_preallocations, __entry->dev = inode->i_sb->s_dev; __entry->ino = inode->i_ino; __entry->len = len; - __entry->needed = needed; ), - TP_printk("dev %d,%d ino %lu len: %u needed %u", + TP_printk("dev %d,%d ino %lu len: %u", MAJOR(__entry->dev), MINOR(__entry->dev), - (unsigned long) __entry->ino, __entry->len, - __entry->needed) + (unsigned long) __entry->ino, __entry->len) ); TRACE_EVENT(ext4_mb_discard_preallocations, -- cgit v1.2.3 From 8e98b87f515d8c4bae521048a037b2cc431c3fd5 Mon Sep 17 00:00:00 2001 From: Nuno Sa Date: Wed, 17 Jan 2024 14:10:49 +0100 Subject: iio: imu: adis: ensure proper DMA alignment Aligning the buffer to the L1 cache is not sufficient in some platforms as they might have larger cacheline sizes for caches after L1 and thus, we can't guarantee DMA safety. That was the whole reason to introduce IIO_DMA_MINALIGN in [1]. Do the same for the sigma_delta ADCs. [1]: https://lore.kernel.org/linux-iio/20220508175712.647246-2-jic23@kernel.org/ Fixes: ccd2b52f4ac6 ("staging:iio: Add common ADIS library") Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240117-adis-improv-v1-1-7f90e9fad200@analog.com Cc: Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index dc9ea299e088..8898966bc0f0 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -11,6 +11,7 @@ #include #include +#include #include #define ADIS_WRITE_REG(reg) ((0x80 | (reg))) @@ -131,7 +132,7 @@ struct adis { unsigned long irq_flag; void *buffer; - u8 tx[10] ____cacheline_aligned; + u8 tx[10] __aligned(IIO_DMA_MINALIGN); u8 rx[4]; }; -- cgit v1.2.3 From 59598510be1d49e1cff7fd7593293bb8e1b2398b Mon Sep 17 00:00:00 2001 From: Nuno Sa Date: Wed, 17 Jan 2024 13:41:03 +0100 Subject: iio: adc: ad_sigma_delta: ensure proper DMA alignment Aligning the buffer to the L1 cache is not sufficient in some platforms as they might have larger cacheline sizes for caches after L1 and thus, we can't guarantee DMA safety. That was the whole reason to introduce IIO_DMA_MINALIGN in [1]. Do the same for the sigma_delta ADCs. [1]: https://lore.kernel.org/linux-iio/20220508175712.647246-2-jic23@kernel.org/ Fixes: 0fb6ee8d0b5e ("iio: ad_sigma_delta: Don't put SPI transfer buffer on the stack") Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240117-dev_sigma_delta_no_irq_flags-v1-1-db39261592cf@analog.com Cc: Signed-off-by: Jonathan Cameron --- include/linux/iio/adc/ad_sigma_delta.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h index 7852f6c9a714..719cf9cc6e1a 100644 --- a/include/linux/iio/adc/ad_sigma_delta.h +++ b/include/linux/iio/adc/ad_sigma_delta.h @@ -8,6 +8,8 @@ #ifndef __AD_SIGMA_DELTA_H__ #define __AD_SIGMA_DELTA_H__ +#include + enum ad_sigma_delta_mode { AD_SD_MODE_CONTINUOUS = 0, AD_SD_MODE_SINGLE = 1, @@ -99,7 +101,7 @@ struct ad_sigma_delta { * 'rx_buf' is up to 32 bits per sample + 64 bit timestamp, * rounded to 16 bytes to take into account padding. */ - uint8_t tx_buf[4] ____cacheline_aligned; + uint8_t tx_buf[4] __aligned(IIO_DMA_MINALIGN); uint8_t rx_buf[16] __aligned(8); }; -- cgit v1.2.3 From 41353fbad4f551e82c2792f7e82ac225c79cc710 Mon Sep 17 00:00:00 2001 From: Guixin Liu Date: Thu, 18 Jan 2024 20:51:45 +0800 Subject: nvmet: unify aer type enum The host and target use two definition of aer type, unify them into a single one. Signed-off-by: Guixin Liu Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Keith Busch --- drivers/nvme/target/core.c | 4 ++-- drivers/nvme/target/discovery.c | 2 +- include/linux/nvme.h | 6 ------ 3 files changed, 3 insertions(+), 9 deletions(-) (limited to 'include') diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index d26aa30f8702..fa35e65915f0 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -248,7 +248,7 @@ void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid) nvmet_add_to_changed_ns_log(ctrl, cpu_to_le32(nsid)); if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_NS_ATTR)) continue; - nvmet_add_async_event(ctrl, NVME_AER_TYPE_NOTICE, + nvmet_add_async_event(ctrl, NVME_AER_NOTICE, NVME_AER_NOTICE_NS_CHANGED, NVME_LOG_CHANGED_NS); } @@ -265,7 +265,7 @@ void nvmet_send_ana_event(struct nvmet_subsys *subsys, continue; if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_ANA_CHANGE)) continue; - nvmet_add_async_event(ctrl, NVME_AER_TYPE_NOTICE, + nvmet_add_async_event(ctrl, NVME_AER_NOTICE, NVME_AER_NOTICE_ANA, NVME_LOG_ANA); } mutex_unlock(&subsys->lock); diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c index 668d257fa986..68e82ccc0e4e 100644 --- a/drivers/nvme/target/discovery.c +++ b/drivers/nvme/target/discovery.c @@ -21,7 +21,7 @@ static void __nvmet_disc_changed(struct nvmet_port *port, if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_DISC_CHANGE)) return; - nvmet_add_async_event(ctrl, NVME_AER_TYPE_NOTICE, + nvmet_add_async_event(ctrl, NVME_AER_NOTICE, NVME_AER_NOTICE_DISC_CHANGED, NVME_LOG_DISC); } diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 462c21e0e417..68eff8c86ce3 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -816,12 +816,6 @@ struct nvme_reservation_status_ext { struct nvme_registered_ctrl_ext regctl_eds[]; }; -enum nvme_async_event_type { - NVME_AER_TYPE_ERROR = 0, - NVME_AER_TYPE_SMART = 1, - NVME_AER_TYPE_NOTICE = 2, -}; - /* I/O commands */ enum nvme_opcode { -- cgit v1.2.3 From c4608d1bf7c6536d1a3d233eb21e50678681564e Mon Sep 17 00:00:00 2001 From: Yang Shi Date: Wed, 20 Dec 2023 22:59:43 -0800 Subject: mm: mmap: map MAP_STACK to VM_NOHUGEPAGE commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries") incured regression for stress-ng pthread benchmark [1]. It is because THP get allocated to pthread's stack area much more possible than before. Pthread's stack area is allocated by mmap without VM_GROWSDOWN or VM_GROWSUP flag, so kernel can't tell whether it is a stack area or not. The MAP_STACK flag is used to mark the stack area, but it is a no-op on Linux. Mapping MAP_STACK to VM_NOHUGEPAGE to prevent from allocating THP for such stack area. With this change the stack area looks like: fffd18e10000-fffd19610000 rw-p 00000000 00:00 0 Size: 8192 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 12 kB Pss: 12 kB Pss_Dirty: 12 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 12 kB Referenced: 12 kB Anonymous: 12 kB KSM: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB FilePmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd wr mr mw me ac nh The "nh" flag is set. [1] https://lore.kernel.org/linux-mm/202312192310.56367035-oliver.sang@intel.com/ Link: https://lkml.kernel.org/r/20231221065943.2803551-2-shy828301@gmail.com Fixes: efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries") Signed-off-by: Yang Shi Reported-by: kernel test robot Tested-by: Oliver Sang Reviewed-by: Yin Fengwei Cc: Rik van Riel Cc: Matthew Wilcox Cc: Christopher Lameter Cc: Huang, Ying Cc: Signed-off-by: Andrew Morton --- include/linux/mman.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/mman.h b/include/linux/mman.h index 40d94411d492..dc7048824be8 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -156,6 +156,7 @@ calc_vm_flag_bits(unsigned long flags) return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) | _calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED ) | _calc_vm_trans(flags, MAP_SYNC, VM_SYNC ) | + _calc_vm_trans(flags, MAP_STACK, VM_NOHUGEPAGE) | arch_calc_vm_flag_bits(flags); } -- cgit v1.2.3 From f6564fce256a3944aa1bc76cb3c40e792d97c1eb Mon Sep 17 00:00:00 2001 From: Marco Elver Date: Thu, 18 Jan 2024 11:59:14 +0100 Subject: mm, kmsan: fix infinite recursion due to RCU critical section Alexander Potapenko writes in [1]: "For every memory access in the code instrumented by KMSAN we call kmsan_get_metadata() to obtain the metadata for the memory being accessed. For virtual memory the metadata pointers are stored in the corresponding `struct page`, therefore we need to call virt_to_page() to get them. According to the comment in arch/x86/include/asm/page.h, virt_to_page(kaddr) returns a valid pointer iff virt_addr_valid(kaddr) is true, so KMSAN needs to call virt_addr_valid() as well. To avoid recursion, kmsan_get_metadata() must not call instrumented code, therefore ./arch/x86/include/asm/kmsan.h forks parts of arch/x86/mm/physaddr.c to check whether a virtual address is valid or not. But the introduction of rcu_read_lock() to pfn_valid() added instrumented RCU API calls to virt_to_page_or_null(), which is called by kmsan_get_metadata(), so there is an infinite recursion now. I do not think it is correct to stop that recursion by doing kmsan_enter_runtime()/kmsan_exit_runtime() in kmsan_get_metadata(): that would prevent instrumented functions called from within the runtime from tracking the shadow values, which might introduce false positives." Fix the issue by switching pfn_valid() to the _sched() variant of rcu_read_lock/unlock(), which does not require calling into RCU. Given the critical section in pfn_valid() is very small, this is a reasonable trade-off (with preemptible RCU). KMSAN further needs to be careful to suppress calls into the scheduler, which would be another source of recursion. This can be done by wrapping the call to pfn_valid() into preempt_disable/enable_no_resched(). The downside is that this sacrifices breaking scheduling guarantees; however, a kernel compiled with KMSAN has already given up any performance guarantees due to being heavily instrumented. Note, KMSAN code already disables tracing via Makefile, and since mmzone.h is included, it is not necessary to use the notrace variant, which is generally preferred in all other cases. Link: https://lkml.kernel.org/r/20240115184430.2710652-1-glider@google.com [1] Link: https://lkml.kernel.org/r/20240118110022.2538350-1-elver@google.com Fixes: 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") Signed-off-by: Marco Elver Reported-by: Alexander Potapenko Reported-by: syzbot+93a9e8a3dea8d6085e12@syzkaller.appspotmail.com Reviewed-by: Alexander Potapenko Tested-by: Alexander Potapenko Cc: Charan Teja Kalla Cc: Borislav Petkov (AMD) Cc: Dave Hansen Cc: Dmitry Vyukov Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- arch/x86/include/asm/kmsan.h | 17 ++++++++++++++++- include/linux/mmzone.h | 6 +++--- 2 files changed, 19 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/arch/x86/include/asm/kmsan.h b/arch/x86/include/asm/kmsan.h index 8fa6ac0e2d76..d91b37f5b4bb 100644 --- a/arch/x86/include/asm/kmsan.h +++ b/arch/x86/include/asm/kmsan.h @@ -64,6 +64,7 @@ static inline bool kmsan_virt_addr_valid(void *addr) { unsigned long x = (unsigned long)addr; unsigned long y = x - __START_KERNEL_map; + bool ret; /* use the carry flag to determine if x was < __START_KERNEL_map */ if (unlikely(x > y)) { @@ -79,7 +80,21 @@ static inline bool kmsan_virt_addr_valid(void *addr) return false; } - return pfn_valid(x >> PAGE_SHIFT); + /* + * pfn_valid() relies on RCU, and may call into the scheduler on exiting + * the critical section. However, this would result in recursion with + * KMSAN. Therefore, disable preemption here, and re-enable preemption + * below while suppressing reschedules to avoid recursion. + * + * Note, this sacrifices occasionally breaking scheduling guarantees. + * Although, a kernel compiled with KMSAN has already given up on any + * performance guarantees due to being heavily instrumented. + */ + preempt_disable(); + ret = pfn_valid(x >> PAGE_SHIFT); + preempt_enable_no_resched(); + + return ret; } #endif /* !MODULE */ diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 4ed33b127821..a497f189d988 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -2013,9 +2013,9 @@ static inline int pfn_valid(unsigned long pfn) if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS) return 0; ms = __pfn_to_section(pfn); - rcu_read_lock(); + rcu_read_lock_sched(); if (!valid_section(ms)) { - rcu_read_unlock(); + rcu_read_unlock_sched(); return 0; } /* @@ -2023,7 +2023,7 @@ static inline int pfn_valid(unsigned long pfn) * the entire section-sized span. */ ret = early_section(ms) || pfn_section_valid(ms, pfn); - rcu_read_unlock(); + rcu_read_unlock_sched(); return ret; } -- cgit v1.2.3 From e622502c310f1069fd9f41cd38210553115f610a Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Thu, 25 Jan 2024 15:18:47 +0100 Subject: ipmr: fix kernel panic when forwarding mcast packets The stacktrace was: [ 86.305548] BUG: kernel NULL pointer dereference, address: 0000000000000092 [ 86.306815] #PF: supervisor read access in kernel mode [ 86.307717] #PF: error_code(0x0000) - not-present page [ 86.308624] PGD 0 P4D 0 [ 86.309091] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 86.309883] CPU: 2 PID: 3139 Comm: pimd Tainted: G U 6.8.0-6wind-knet #1 [ 86.311027] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.1-0-g0551a4be2c-prebuilt.qemu-project.org 04/01/2014 [ 86.312728] RIP: 0010:ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985) [ 86.313399] Code: f9 1f 0f 87 85 03 00 00 48 8d 04 5b 48 8d 04 83 49 8d 44 c5 00 48 8b 40 70 48 39 c2 0f 84 d9 00 00 00 49 8b 46 58 48 83 e0 fe <80> b8 92 00 00 00 00 0f 84 55 ff ff ff 49 83 47 38 01 45 85 e4 0f [ 86.316565] RSP: 0018:ffffad21c0583ae0 EFLAGS: 00010246 [ 86.317497] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 86.318596] RDX: ffff9559cb46c000 RSI: 0000000000000000 RDI: 0000000000000000 [ 86.319627] RBP: ffffad21c0583b30 R08: 0000000000000000 R09: 0000000000000000 [ 86.320650] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 86.321672] R13: ffff9559c093a000 R14: ffff9559cc00b800 R15: ffff9559c09c1d80 [ 86.322873] FS: 00007f85db661980(0000) GS:ffff955a79d00000(0000) knlGS:0000000000000000 [ 86.324291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.325314] CR2: 0000000000000092 CR3: 000000002f13a000 CR4: 0000000000350ef0 [ 86.326589] Call Trace: [ 86.327036] [ 86.327434] ? show_regs (/build/work/knet/arch/x86/kernel/dumpstack.c:479) [ 86.328049] ? __die (/build/work/knet/arch/x86/kernel/dumpstack.c:421 /build/work/knet/arch/x86/kernel/dumpstack.c:434) [ 86.328508] ? page_fault_oops (/build/work/knet/arch/x86/mm/fault.c:707) [ 86.329107] ? do_user_addr_fault (/build/work/knet/arch/x86/mm/fault.c:1264) [ 86.329756] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.330350] ? __irq_work_queue_local (/build/work/knet/kernel/irq_work.c:111 (discriminator 1)) [ 86.331013] ? exc_page_fault (/build/work/knet/./arch/x86/include/asm/paravirt.h:693 /build/work/knet/arch/x86/mm/fault.c:1515 /build/work/knet/arch/x86/mm/fault.c:1563) [ 86.331702] ? asm_exc_page_fault (/build/work/knet/./arch/x86/include/asm/idtentry.h:570) [ 86.332468] ? ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985) [ 86.333183] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.333920] ipmr_mfc_add (/build/work/knet/./include/linux/rcupdate.h:782 /build/work/knet/net/ipv4/ipmr.c:1009 /build/work/knet/net/ipv4/ipmr.c:1273) [ 86.334583] ? __pfx_ipmr_hash_cmp (/build/work/knet/net/ipv4/ipmr.c:363) [ 86.335357] ip_mroute_setsockopt (/build/work/knet/net/ipv4/ipmr.c:1470) [ 86.336135] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.336854] ? ip_mroute_setsockopt (/build/work/knet/net/ipv4/ipmr.c:1470) [ 86.337679] do_ip_setsockopt (/build/work/knet/net/ipv4/ip_sockglue.c:944) [ 86.338408] ? __pfx_unix_stream_read_actor (/build/work/knet/net/unix/af_unix.c:2862) [ 86.339232] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.339809] ? aa_sk_perm (/build/work/knet/security/apparmor/include/cred.h:153 /build/work/knet/security/apparmor/net.c:181) [ 86.340342] ip_setsockopt (/build/work/knet/net/ipv4/ip_sockglue.c:1415) [ 86.340859] raw_setsockopt (/build/work/knet/net/ipv4/raw.c:836) [ 86.341408] ? security_socket_setsockopt (/build/work/knet/security/security.c:4561 (discriminator 13)) [ 86.342116] sock_common_setsockopt (/build/work/knet/net/core/sock.c:3716) [ 86.342747] do_sock_setsockopt (/build/work/knet/net/socket.c:2313) [ 86.343363] __sys_setsockopt (/build/work/knet/./include/linux/file.h:32 /build/work/knet/net/socket.c:2336) [ 86.344020] __x64_sys_setsockopt (/build/work/knet/net/socket.c:2340) [ 86.344766] do_syscall_64 (/build/work/knet/arch/x86/entry/common.c:52 /build/work/knet/arch/x86/entry/common.c:83) [ 86.345433] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.346161] ? syscall_exit_work (/build/work/knet/./include/linux/audit.h:357 /build/work/knet/kernel/entry/common.c:160) [ 86.346938] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.347657] ? syscall_exit_to_user_mode (/build/work/knet/kernel/entry/common.c:215) [ 86.348538] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.349262] ? do_syscall_64 (/build/work/knet/./arch/x86/include/asm/cpufeature.h:171 /build/work/knet/arch/x86/entry/common.c:98) [ 86.349971] entry_SYSCALL_64_after_hwframe (/build/work/knet/arch/x86/entry/entry_64.S:129) The original packet in ipmr_cache_report() may be queued and then forwarded with ip_mr_forward(). This last function has the assumption that the skb dst is set. After the below commit, the skb dst is dropped by ipv4_pktinfo_prepare(), which causes the oops. Fixes: bb7403655b3c ("ipmr: support IP_PKTINFO on cache report IGMP msg") Signed-off-by: Nicolas Dichtel Reviewed-by: Eric Dumazet Link: https://lore.kernel.org/r/20240125141847.1931933-1-nicolas.dichtel@6wind.com Signed-off-by: Jakub Kicinski --- include/net/ip.h | 2 +- net/ipv4/ip_sockglue.c | 6 ++++-- net/ipv4/ipmr.c | 2 +- net/ipv4/raw.c | 2 +- net/ipv4/udp.c | 2 +- 5 files changed, 8 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/net/ip.h b/include/net/ip.h index de0c69c57e3c..25cb688bdc62 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -767,7 +767,7 @@ int ip_options_rcv_srr(struct sk_buff *skb, struct net_device *dev); * Functions provided by ip_sockglue.c */ -void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb); +void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb, bool drop_dst); void ip_cmsg_recv_offset(struct msghdr *msg, struct sock *sk, struct sk_buff *skb, int tlen, int offset); int ip_cmsg_send(struct sock *sk, struct msghdr *msg, diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 7aa9dc0e6760..21d2ffa919e9 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1363,12 +1363,13 @@ e_inval: * ipv4_pktinfo_prepare - transfer some info from rtable to skb * @sk: socket * @skb: buffer + * @drop_dst: if true, drops skb dst * * To support IP_CMSG_PKTINFO option, we store rt_iif and specific * destination in skb->cb[] before dst drop. * This way, receiver doesn't make cache line misses to read rtable. */ -void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb) +void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb, bool drop_dst) { struct in_pktinfo *pktinfo = PKTINFO_SKB_CB(skb); bool prepare = inet_test_bit(PKTINFO, sk) || @@ -1397,7 +1398,8 @@ void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb) pktinfo->ipi_ifindex = 0; pktinfo->ipi_spec_dst.s_addr = 0; } - skb_dst_drop(skb); + if (drop_dst) + skb_dst_drop(skb); } int ip_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 9d6f59531b3a..362229836510 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1073,7 +1073,7 @@ static int ipmr_cache_report(const struct mr_table *mrt, msg = (struct igmpmsg *)skb_network_header(skb); msg->im_vif = vifi; msg->im_vif_hi = vifi >> 8; - ipv4_pktinfo_prepare(mroute_sk, pkt); + ipv4_pktinfo_prepare(mroute_sk, pkt, false); memcpy(skb->cb, pkt->cb, sizeof(skb->cb)); /* Add our header */ igmp = skb_put(skb, sizeof(struct igmphdr)); diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index 27da9d7294c0..aea89326c697 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -292,7 +292,7 @@ static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb) /* Charge it to the socket. */ - ipv4_pktinfo_prepare(sk, skb); + ipv4_pktinfo_prepare(sk, skb, true); if (sock_queue_rcv_skb_reason(sk, skb, &reason) < 0) { kfree_skb_reason(skb, reason); return NET_RX_DROP; diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 148ffb007969..f631b0a21af4 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2169,7 +2169,7 @@ static int udp_queue_rcv_one_skb(struct sock *sk, struct sk_buff *skb) udp_csum_pull_header(skb); - ipv4_pktinfo_prepare(sk, skb); + ipv4_pktinfo_prepare(sk, skb, true); return __udp_queue_rcv_skb(sk, skb); csum_error: -- cgit v1.2.3 From e15c99be0c915bbe70dfe55450d268d7bd5bdac8 Mon Sep 17 00:00:00 2001 From: Christoph Niedermaier Date: Fri, 19 Jan 2024 12:35:16 +0100 Subject: tty: serial: Fix bit order in RS485 flag definitions Since the commit 93f3350c46fa ("RS485: fix inconsistencies in the meaning of some variables"), the definition for bit 3 has been removed. But with the switch to bit shift macros in commit 76ac8e29855b ("tty: serial: Cleanup the bit shift with macro"), this gap wasn't preserved. To avoid a break in user/kernel api of the system skip bit 3 again and add a placeholder comment. Signed-off-by: Christoph Niedermaier Fixes: 76ac8e29855b ("tty: serial: Cleanup the bit shift with macro") Fixes: 6056f20f27e9 ("tty: serial: Add RS422 flag to struct serial_rs485") Reviewed-by: Jiri Slaby Cc: Greg Kroah-Hartman Cc: Crescent CY Hsieh Cc: Jiri Slaby Cc: Lukas Wunner Cc: Lino Sanfilippo Cc: Hugo Villeneuve Link: https://lore.kernel.org/r/20240119113516.2944-1-cniedermaier@dh-electronics.com Signed-off-by: Greg Kroah-Hartman --- include/uapi/linux/serial.h | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h index 9086367db043..de9b4733607e 100644 --- a/include/uapi/linux/serial.h +++ b/include/uapi/linux/serial.h @@ -145,12 +145,13 @@ struct serial_rs485 { #define SER_RS485_ENABLED _BITUL(0) #define SER_RS485_RTS_ON_SEND _BITUL(1) #define SER_RS485_RTS_AFTER_SEND _BITUL(2) -#define SER_RS485_RX_DURING_TX _BITUL(3) -#define SER_RS485_TERMINATE_BUS _BITUL(4) -#define SER_RS485_ADDRB _BITUL(5) -#define SER_RS485_ADDR_RECV _BITUL(6) -#define SER_RS485_ADDR_DEST _BITUL(7) -#define SER_RS485_MODE_RS422 _BITUL(8) +/* Placeholder for bit 3: SER_RS485_RTS_BEFORE_SEND, which isn't used anymore */ +#define SER_RS485_RX_DURING_TX _BITUL(4) +#define SER_RS485_TERMINATE_BUS _BITUL(5) +#define SER_RS485_ADDRB _BITUL(6) +#define SER_RS485_ADDR_RECV _BITUL(7) +#define SER_RS485_ADDR_DEST _BITUL(8) +#define SER_RS485_MODE_RS422 _BITUL(9) __u32 delay_rts_before_send; __u32 delay_rts_after_send; -- cgit v1.2.3 From 6f6c72acddf4357fcc83593c20ef9064fb42db92 Mon Sep 17 00:00:00 2001 From: Javier Carrasco Date: Sat, 27 Jan 2024 21:02:08 +0100 Subject: iio: move LIGHT_UVA and LIGHT_UVB to the end of iio_modifier The new modifiers should have added to the end of the enum, so they do not affect the existing entries. No modifiers were added since then, so they can be moved safely to the end of the list. Move IIO_MOD_LIGHT_UVA and IIO_MOD_LIGHT_UVB to the end of iio_modifier. Fixes: b89710bd215e ("iio: add modifiers for A and B ultraviolet light") Suggested-by: Paul Cercueil Signed-off-by: Javier Carrasco Link: https://lore.kernel.org/r/20240127200208.185815-1-javier.carrasco.cruz@gmail.com Signed-off-by: Jonathan Cameron --- include/uapi/linux/iio/types.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h index 5060963707b1..f2e0b2d50e6b 100644 --- a/include/uapi/linux/iio/types.h +++ b/include/uapi/linux/iio/types.h @@ -91,8 +91,6 @@ enum iio_modifier { IIO_MOD_CO2, IIO_MOD_VOC, IIO_MOD_LIGHT_UV, - IIO_MOD_LIGHT_UVA, - IIO_MOD_LIGHT_UVB, IIO_MOD_LIGHT_DUV, IIO_MOD_PM1, IIO_MOD_PM2P5, @@ -107,6 +105,8 @@ enum iio_modifier { IIO_MOD_PITCH, IIO_MOD_YAW, IIO_MOD_ROLL, + IIO_MOD_LIGHT_UVA, + IIO_MOD_LIGHT_UVB, }; enum iio_event_type { -- cgit v1.2.3 From a22fe1d6dec7e98535b97249fdc95c2be79120bb Mon Sep 17 00:00:00 2001 From: Frank Li Date: Tue, 23 Jan 2024 12:28:41 -0500 Subject: dmaengine: fix is_slave_direction() return false when DMA_DEV_TO_DEV is_slave_direction() should return true when direction is DMA_DEV_TO_DEV. Fixes: 49920bc66984 ("dmaengine: add new enum dma_transfer_direction") Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20240123172842.3764529-1-Frank.Li@nxp.com Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 3df70d6131c8..752dbde4cec1 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -953,7 +953,8 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, static inline bool is_slave_direction(enum dma_transfer_direction direction) { - return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM); + return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM) || + (direction == DMA_DEV_TO_DEV); } static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( -- cgit v1.2.3 From 5a287d3d2b9de2b3e747132c615599907ba5c3c1 Mon Sep 17 00:00:00 2001 From: Ondrej Mosnacek Date: Fri, 26 Jan 2024 19:45:31 +0100 Subject: lsm: fix default return value of the socket_getpeersec_*() hooks For these hooks the true "neutral" value is -EOPNOTSUPP, which is currently what is returned when no LSM provides this hook and what LSMs return when there is no security context set on the socket. Correct the value in and adjust the dispatch functions in security/security.c to avoid issues when the BPF LSM is enabled. Cc: stable@vger.kernel.org Fixes: 98e828a0650f ("security: Refactor declaration of LSM hooks") Signed-off-by: Ondrej Mosnacek [PM: subject line tweak] Signed-off-by: Paul Moore --- include/linux/lsm_hook_defs.h | 4 ++-- security/security.c | 31 +++++++++++++++++++++++++++---- 2 files changed, 29 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 185924c56378..76458b6d53da 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -315,9 +315,9 @@ LSM_HOOK(int, 0, socket_getsockopt, struct socket *sock, int level, int optname) LSM_HOOK(int, 0, socket_setsockopt, struct socket *sock, int level, int optname) LSM_HOOK(int, 0, socket_shutdown, struct socket *sock, int how) LSM_HOOK(int, 0, socket_sock_rcv_skb, struct sock *sk, struct sk_buff *skb) -LSM_HOOK(int, 0, socket_getpeersec_stream, struct socket *sock, +LSM_HOOK(int, -ENOPROTOOPT, socket_getpeersec_stream, struct socket *sock, sockptr_t optval, sockptr_t optlen, unsigned int len) -LSM_HOOK(int, 0, socket_getpeersec_dgram, struct socket *sock, +LSM_HOOK(int, -ENOPROTOOPT, socket_getpeersec_dgram, struct socket *sock, struct sk_buff *skb, u32 *secid) LSM_HOOK(int, 0, sk_alloc_security, struct sock *sk, int family, gfp_t priority) LSM_HOOK(void, LSM_RET_VOID, sk_free_security, struct sock *sk) diff --git a/security/security.c b/security/security.c index 6196ccaba433..3aaad75c9ce8 100644 --- a/security/security.c +++ b/security/security.c @@ -4624,8 +4624,20 @@ EXPORT_SYMBOL(security_sock_rcv_skb); int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, sockptr_t optlen, unsigned int len) { - return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, - optval, optlen, len); + struct security_hook_list *hp; + int rc; + + /* + * Only one module will provide a security context. + */ + hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_stream, + list) { + rc = hp->hook.socket_getpeersec_stream(sock, optval, optlen, + len); + if (rc != LSM_RET_DEFAULT(socket_getpeersec_stream)) + return rc; + } + return LSM_RET_DEFAULT(socket_getpeersec_stream); } /** @@ -4645,8 +4657,19 @@ int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) { - return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, - skb, secid); + struct security_hook_list *hp; + int rc; + + /* + * Only one module will provide a security context. + */ + hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_dgram, + list) { + rc = hp->hook.socket_getpeersec_dgram(sock, skb, secid); + if (rc != LSM_RET_DEFAULT(socket_getpeersec_dgram)) + return rc; + } + return LSM_RET_DEFAULT(socket_getpeersec_dgram); } EXPORT_SYMBOL(security_socket_getpeersec_dgram); -- cgit v1.2.3 From 764ad6b02777d77dca3659ca490f0898aa593670 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 24 Jan 2024 12:26:59 +0100 Subject: HID: bpf: use __bpf_kfunc instead of noinline Follow the docs at Documentation/bpf/kfuncs.rst: - declare the function with `__bpf_kfunc` - disables missing prototype warnings, which allows to remove them from include/linux/hid-bpf.h Removing the prototypes is not an issue because we currently have to redeclare them when writing the BPF program. They will eventually be generated by bpftool directly AFAIU. Link: https://lore.kernel.org/r/20240124-b4-hid-bpf-fixes-v2-3-052520b1e5e6@kernel.org Signed-off-by: Benjamin Tissoires --- drivers/hid/bpf/hid_bpf_dispatch.c | 18 +++++++++++++----- include/linux/hid_bpf.h | 11 ----------- 2 files changed, 13 insertions(+), 16 deletions(-) (limited to 'include') diff --git a/drivers/hid/bpf/hid_bpf_dispatch.c b/drivers/hid/bpf/hid_bpf_dispatch.c index 7903c8638e81..470ae2c29c94 100644 --- a/drivers/hid/bpf/hid_bpf_dispatch.c +++ b/drivers/hid/bpf/hid_bpf_dispatch.c @@ -143,6 +143,9 @@ u8 *call_hid_bpf_rdesc_fixup(struct hid_device *hdev, u8 *rdesc, unsigned int *s } EXPORT_SYMBOL_GPL(call_hid_bpf_rdesc_fixup); +/* Disables missing prototype warnings */ +__bpf_kfunc_start_defs(); + /** * hid_bpf_get_data - Get the kernel memory pointer associated with the context @ctx * @@ -152,7 +155,7 @@ EXPORT_SYMBOL_GPL(call_hid_bpf_rdesc_fixup); * * @returns %NULL on error, an %__u8 memory pointer on success */ -noinline __u8 * +__bpf_kfunc __u8 * hid_bpf_get_data(struct hid_bpf_ctx *ctx, unsigned int offset, const size_t rdwr_buf_size) { struct hid_bpf_ctx_kern *ctx_kern; @@ -167,6 +170,7 @@ hid_bpf_get_data(struct hid_bpf_ctx *ctx, unsigned int offset, const size_t rdwr return ctx_kern->data + offset; } +__bpf_kfunc_end_defs(); /* * The following set contains all functions we agree BPF programs @@ -274,6 +278,9 @@ static int do_hid_bpf_attach_prog(struct hid_device *hdev, int prog_fd, struct b return fd; } +/* Disables missing prototype warnings */ +__bpf_kfunc_start_defs(); + /** * hid_bpf_attach_prog - Attach the given @prog_fd to the given HID device * @@ -286,7 +293,7 @@ static int do_hid_bpf_attach_prog(struct hid_device *hdev, int prog_fd, struct b * is pinned to the BPF file system). */ /* called from syscall */ -noinline int +__bpf_kfunc int hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, __u32 flags) { struct hid_device *hdev; @@ -338,7 +345,7 @@ hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, __u32 flags) * * @returns A pointer to &struct hid_bpf_ctx on success, %NULL on error. */ -noinline struct hid_bpf_ctx * +__bpf_kfunc struct hid_bpf_ctx * hid_bpf_allocate_context(unsigned int hid_id) { struct hid_device *hdev; @@ -371,7 +378,7 @@ hid_bpf_allocate_context(unsigned int hid_id) * @ctx: the HID-BPF context to release * */ -noinline void +__bpf_kfunc void hid_bpf_release_context(struct hid_bpf_ctx *ctx) { struct hid_bpf_ctx_kern *ctx_kern; @@ -397,7 +404,7 @@ hid_bpf_release_context(struct hid_bpf_ctx *ctx) * * @returns %0 on success, a negative error code otherwise. */ -noinline int +__bpf_kfunc int hid_bpf_hw_request(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz, enum hid_report_type rtype, enum hid_class_request reqtype) { @@ -465,6 +472,7 @@ hid_bpf_hw_request(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz, kfree(dma_data); return ret; } +__bpf_kfunc_end_defs(); /* our HID-BPF entrypoints */ BTF_SET8_START(hid_bpf_fmodret_ids) diff --git a/include/linux/hid_bpf.h b/include/linux/hid_bpf.h index 840cd254172d..7118ac28d468 100644 --- a/include/linux/hid_bpf.h +++ b/include/linux/hid_bpf.h @@ -77,17 +77,6 @@ enum hid_bpf_attach_flags { int hid_bpf_device_event(struct hid_bpf_ctx *ctx); int hid_bpf_rdesc_fixup(struct hid_bpf_ctx *ctx); -/* Following functions are kfunc that we export to BPF programs */ -/* available everywhere in HID-BPF */ -__u8 *hid_bpf_get_data(struct hid_bpf_ctx *ctx, unsigned int offset, const size_t __sz); - -/* only available in syscall */ -int hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, __u32 flags); -int hid_bpf_hw_request(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz, - enum hid_report_type rtype, enum hid_class_request reqtype); -struct hid_bpf_ctx *hid_bpf_allocate_context(unsigned int hid_id); -void hid_bpf_release_context(struct hid_bpf_ctx *ctx); - /* * Below is HID internal */ -- cgit v1.2.3 From 1e560864159d002b453da42bd2c13a1805515a20 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 30 Jan 2024 11:02:43 +0100 Subject: PCI/ASPM: Fix deadlock when enabling ASPM A last minute revert in 6.7-final introduced a potential deadlock when enabling ASPM during probe of Qualcomm PCIe controllers as reported by lockdep: ============================================ WARNING: possible recursive locking detected 6.7.0 #40 Not tainted -------------------------------------------- kworker/u16:5/90 is trying to acquire lock: ffffacfa78ced000 (pci_bus_sem){++++}-{3:3}, at: pcie_aspm_pm_state_change+0x58/0xdc but task is already holding lock: ffffacfa78ced000 (pci_bus_sem){++++}-{3:3}, at: pci_walk_bus+0x34/0xbc other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(pci_bus_sem); lock(pci_bus_sem); *** DEADLOCK *** Call trace: print_deadlock_bug+0x25c/0x348 __lock_acquire+0x10a4/0x2064 lock_acquire+0x1e8/0x318 down_read+0x60/0x184 pcie_aspm_pm_state_change+0x58/0xdc pci_set_full_power_state+0xa8/0x114 pci_set_power_state+0xc4/0x120 qcom_pcie_enable_aspm+0x1c/0x3c [pcie_qcom] pci_walk_bus+0x64/0xbc qcom_pcie_host_post_init_2_7_0+0x28/0x34 [pcie_qcom] The deadlock can easily be reproduced on machines like the Lenovo ThinkPad X13s by adding a delay to increase the race window during asynchronous probe where another thread can take a write lock. Add a new pci_set_power_state_locked() and associated helper functions that can be called with the PCI bus semaphore held to avoid taking the read lock twice. Link: https://lore.kernel.org/r/ZZu0qx2cmn7IwTyQ@hovoldconsulting.com Link: https://lore.kernel.org/r/20240130100243.11011-1-johan+linaro@kernel.org Fixes: f93e71aea6c6 ("Revert "PCI/ASPM: Remove pcie_aspm_pm_state_change()"") Signed-off-by: Johan Hovold Signed-off-by: Bjorn Helgaas Cc: # 6.7 --- drivers/pci/bus.c | 49 +++++++++++++-------- drivers/pci/controller/dwc/pcie-qcom.c | 2 +- drivers/pci/pci.c | 78 ++++++++++++++++++++++------------ drivers/pci/pci.h | 4 +- drivers/pci/pcie/aspm.c | 13 ++++-- include/linux/pci.h | 5 +++ 6 files changed, 101 insertions(+), 50 deletions(-) (limited to 'include') diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 9c2137dae429..826b5016a101 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -386,21 +386,8 @@ void pci_bus_add_devices(const struct pci_bus *bus) } EXPORT_SYMBOL(pci_bus_add_devices); -/** pci_walk_bus - walk devices on/under bus, calling callback. - * @top bus whose devices should be walked - * @cb callback to be called for each device found - * @userdata arbitrary pointer to be passed to callback. - * - * Walk the given bus, including any bridged devices - * on buses under this bus. Call the provided callback - * on each device found. - * - * We check the return of @cb each time. If it returns anything - * other than 0, we break out. - * - */ -void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), - void *userdata) +static void __pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), + void *userdata, bool locked) { struct pci_dev *dev; struct pci_bus *bus; @@ -408,7 +395,8 @@ void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), int retval; bus = top; - down_read(&pci_bus_sem); + if (!locked) + down_read(&pci_bus_sem); next = top->devices.next; for (;;) { if (next == &bus->devices) { @@ -431,10 +419,37 @@ void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), if (retval) break; } - up_read(&pci_bus_sem); + if (!locked) + up_read(&pci_bus_sem); +} + +/** + * pci_walk_bus - walk devices on/under bus, calling callback. + * @top: bus whose devices should be walked + * @cb: callback to be called for each device found + * @userdata: arbitrary pointer to be passed to callback + * + * Walk the given bus, including any bridged devices + * on buses under this bus. Call the provided callback + * on each device found. + * + * We check the return of @cb each time. If it returns anything + * other than 0, we break out. + */ +void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), void *userdata) +{ + __pci_walk_bus(top, cb, userdata, false); } EXPORT_SYMBOL_GPL(pci_walk_bus); +void pci_walk_bus_locked(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), void *userdata) +{ + lockdep_assert_held(&pci_bus_sem); + + __pci_walk_bus(top, cb, userdata, true); +} +EXPORT_SYMBOL_GPL(pci_walk_bus_locked); + struct pci_bus *pci_bus_get(struct pci_bus *bus) { if (bus) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 10f2d0bb86be..2ce2a3bd932b 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -972,7 +972,7 @@ static int qcom_pcie_enable_aspm(struct pci_dev *pdev, void *userdata) * Downstream devices need to be in D0 state before enabling PCI PM * substates. */ - pci_set_power_state(pdev, PCI_D0); + pci_set_power_state_locked(pdev, PCI_D0); pci_enable_link_state_locked(pdev, PCIE_LINK_STATE_ALL); return 0; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index d8f11a078924..9ab9b1008d8b 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1354,6 +1354,7 @@ end: /** * pci_set_full_power_state - Put a PCI device into D0 and update its state * @dev: PCI device to power up + * @locked: whether pci_bus_sem is held * * Call pci_power_up() to put @dev into D0, read from its PCI_PM_CTRL register * to confirm the state change, restore its BARs if they might be lost and @@ -1363,7 +1364,7 @@ end: * to D0, it is more efficient to use pci_power_up() directly instead of this * function. */ -static int pci_set_full_power_state(struct pci_dev *dev) +static int pci_set_full_power_state(struct pci_dev *dev, bool locked) { u16 pmcsr; int ret; @@ -1399,7 +1400,7 @@ static int pci_set_full_power_state(struct pci_dev *dev) } if (dev->bus->self) - pcie_aspm_pm_state_change(dev->bus->self); + pcie_aspm_pm_state_change(dev->bus->self, locked); return 0; } @@ -1428,10 +1429,22 @@ void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state) pci_walk_bus(bus, __pci_dev_set_current_state, &state); } +static void __pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state, bool locked) +{ + if (!bus) + return; + + if (locked) + pci_walk_bus_locked(bus, __pci_dev_set_current_state, &state); + else + pci_walk_bus(bus, __pci_dev_set_current_state, &state); +} + /** * pci_set_low_power_state - Put a PCI device into a low-power state. * @dev: PCI device to handle. * @state: PCI power state (D1, D2, D3hot) to put the device into. + * @locked: whether pci_bus_sem is held * * Use the device's PCI_PM_CTRL register to put it into a low-power state. * @@ -1442,7 +1455,7 @@ void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state) * 0 if device already is in the requested state. * 0 if device's power state has been successfully changed. */ -static int pci_set_low_power_state(struct pci_dev *dev, pci_power_t state) +static int pci_set_low_power_state(struct pci_dev *dev, pci_power_t state, bool locked) { u16 pmcsr; @@ -1496,29 +1509,12 @@ static int pci_set_low_power_state(struct pci_dev *dev, pci_power_t state) pci_power_name(state)); if (dev->bus->self) - pcie_aspm_pm_state_change(dev->bus->self); + pcie_aspm_pm_state_change(dev->bus->self, locked); return 0; } -/** - * pci_set_power_state - Set the power state of a PCI device - * @dev: PCI device to handle. - * @state: PCI power state (D0, D1, D2, D3hot) to put the device into. - * - * Transition a device to a new power state, using the platform firmware and/or - * the device's PCI PM registers. - * - * RETURN VALUE: - * -EINVAL if the requested state is invalid. - * -EIO if device does not support PCI PM or its PM capabilities register has a - * wrong version, or device doesn't support the requested state. - * 0 if the transition is to D1 or D2 but D1 and D2 are not supported. - * 0 if device already is in the requested state. - * 0 if the transition is to D3 but D3 is not supported. - * 0 if device's power state has been successfully changed. - */ -int pci_set_power_state(struct pci_dev *dev, pci_power_t state) +static int __pci_set_power_state(struct pci_dev *dev, pci_power_t state, bool locked) { int error; @@ -1542,7 +1538,7 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) return 0; if (state == PCI_D0) - return pci_set_full_power_state(dev); + return pci_set_full_power_state(dev, locked); /* * This device is quirked not to be put into D3, so don't put it in @@ -1556,16 +1552,16 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) * To put the device in D3cold, put it into D3hot in the native * way, then put it into D3cold using platform ops. */ - error = pci_set_low_power_state(dev, PCI_D3hot); + error = pci_set_low_power_state(dev, PCI_D3hot, locked); if (pci_platform_power_transition(dev, PCI_D3cold)) return error; /* Powering off a bridge may power off the whole hierarchy */ if (dev->current_state == PCI_D3cold) - pci_bus_set_current_state(dev->subordinate, PCI_D3cold); + __pci_bus_set_current_state(dev->subordinate, PCI_D3cold, locked); } else { - error = pci_set_low_power_state(dev, state); + error = pci_set_low_power_state(dev, state, locked); if (pci_platform_power_transition(dev, state)) return error; @@ -1573,8 +1569,38 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) return 0; } + +/** + * pci_set_power_state - Set the power state of a PCI device + * @dev: PCI device to handle. + * @state: PCI power state (D0, D1, D2, D3hot) to put the device into. + * + * Transition a device to a new power state, using the platform firmware and/or + * the device's PCI PM registers. + * + * RETURN VALUE: + * -EINVAL if the requested state is invalid. + * -EIO if device does not support PCI PM or its PM capabilities register has a + * wrong version, or device doesn't support the requested state. + * 0 if the transition is to D1 or D2 but D1 and D2 are not supported. + * 0 if device already is in the requested state. + * 0 if the transition is to D3 but D3 is not supported. + * 0 if device's power state has been successfully changed. + */ +int pci_set_power_state(struct pci_dev *dev, pci_power_t state) +{ + return __pci_set_power_state(dev, state, false); +} EXPORT_SYMBOL(pci_set_power_state); +int pci_set_power_state_locked(struct pci_dev *dev, pci_power_t state) +{ + lockdep_assert_held(&pci_bus_sem); + + return __pci_set_power_state(dev, state, true); +} +EXPORT_SYMBOL(pci_set_power_state_locked); + #define PCI_EXP_SAVE_REGS 7 static struct pci_cap_saved_state *_pci_find_saved_cap(struct pci_dev *pci_dev, diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 2336a8d1edab..e9750b1b19ba 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -571,12 +571,12 @@ int pcie_retrain_link(struct pci_dev *pdev, bool use_lt); #ifdef CONFIG_PCIEASPM void pcie_aspm_init_link_state(struct pci_dev *pdev); void pcie_aspm_exit_link_state(struct pci_dev *pdev); -void pcie_aspm_pm_state_change(struct pci_dev *pdev); +void pcie_aspm_pm_state_change(struct pci_dev *pdev, bool locked); void pcie_aspm_powersave_config_link(struct pci_dev *pdev); #else static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { } static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { } -static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { } +static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev, bool locked) { } static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { } #endif diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 5a0066ecc3c5..bc0bd86695ec 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -1003,8 +1003,11 @@ void pcie_aspm_exit_link_state(struct pci_dev *pdev) up_read(&pci_bus_sem); } -/* @pdev: the root port or switch downstream port */ -void pcie_aspm_pm_state_change(struct pci_dev *pdev) +/* + * @pdev: the root port or switch downstream port + * @locked: whether pci_bus_sem is held + */ +void pcie_aspm_pm_state_change(struct pci_dev *pdev, bool locked) { struct pcie_link_state *link = pdev->link_state; @@ -1014,12 +1017,14 @@ void pcie_aspm_pm_state_change(struct pci_dev *pdev) * Devices changed PM state, we should recheck if latency * meets all functions' requirement */ - down_read(&pci_bus_sem); + if (!locked) + down_read(&pci_bus_sem); mutex_lock(&aspm_lock); pcie_update_aspm_capable(link->root); pcie_config_aspm_path(link); mutex_unlock(&aspm_lock); - up_read(&pci_bus_sem); + if (!locked) + up_read(&pci_bus_sem); } void pcie_aspm_powersave_config_link(struct pci_dev *pdev) diff --git a/include/linux/pci.h b/include/linux/pci.h index add9368e6314..7ab0d13672da 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1422,6 +1422,7 @@ int pci_load_and_free_saved_state(struct pci_dev *dev, struct pci_saved_state **state); int pci_platform_power_transition(struct pci_dev *dev, pci_power_t state); int pci_set_power_state(struct pci_dev *dev, pci_power_t state); +int pci_set_power_state_locked(struct pci_dev *dev, pci_power_t state); pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); void pci_pme_active(struct pci_dev *dev, bool enable); @@ -1625,6 +1626,8 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), void *userdata); +void pci_walk_bus_locked(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), + void *userdata); int pci_cfg_space_size(struct pci_dev *dev); unsigned char pci_bus_max_busnr(struct pci_bus *bus); void pci_setup_bridge(struct pci_bus *bus); @@ -2025,6 +2028,8 @@ static inline int pci_save_state(struct pci_dev *dev) { return 0; } static inline void pci_restore_state(struct pci_dev *dev) { } static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; } +static inline int pci_set_power_state_locked(struct pci_dev *dev, pci_power_t state) +{ return 0; } static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) { return 0; } static inline pci_power_t pci_choose_state(struct pci_dev *dev, -- cgit v1.2.3 From 776d451648443f9884be4a1b4e38e8faf1c621f9 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 23 Jan 2024 23:45:32 +0100 Subject: netfilter: nf_tables: restrict tunnel object to NFPROTO_NETDEV Bail out on using the tunnel dst template from other than netdev family. Add the infrastructure to check for the family in objects. Fixes: af308b94a2a4 ("netfilter: nf_tables: add tunnel support") Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/nf_tables.h | 2 ++ net/netfilter/nf_tables_api.c | 14 +++++++++----- net/netfilter/nft_tunnel.c | 1 + 3 files changed, 12 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 4e1ea18eb5f0..001226c34621 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -1351,6 +1351,7 @@ void nft_obj_notify(struct net *net, const struct nft_table *table, * @type: stateful object numeric type * @owner: module owner * @maxattr: maximum netlink attribute + * @family: address family for AF-specific object types * @policy: netlink attribute policy */ struct nft_object_type { @@ -1360,6 +1361,7 @@ struct nft_object_type { struct list_head list; u32 type; unsigned int maxattr; + u8 family; struct module *owner; const struct nla_policy *policy; }; diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index c537104411e7..fc016befb46f 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -7551,11 +7551,15 @@ nla_put_failure: return -1; } -static const struct nft_object_type *__nft_obj_type_get(u32 objtype) +static const struct nft_object_type *__nft_obj_type_get(u32 objtype, u8 family) { const struct nft_object_type *type; list_for_each_entry(type, &nf_tables_objects, list) { + if (type->family != NFPROTO_UNSPEC && + type->family != family) + continue; + if (objtype == type->type) return type; } @@ -7563,11 +7567,11 @@ static const struct nft_object_type *__nft_obj_type_get(u32 objtype) } static const struct nft_object_type * -nft_obj_type_get(struct net *net, u32 objtype) +nft_obj_type_get(struct net *net, u32 objtype, u8 family) { const struct nft_object_type *type; - type = __nft_obj_type_get(objtype); + type = __nft_obj_type_get(objtype, family); if (type != NULL && try_module_get(type->owner)) return type; @@ -7660,7 +7664,7 @@ static int nf_tables_newobj(struct sk_buff *skb, const struct nfnl_info *info, if (info->nlh->nlmsg_flags & NLM_F_REPLACE) return -EOPNOTSUPP; - type = __nft_obj_type_get(objtype); + type = __nft_obj_type_get(objtype, family); if (WARN_ON_ONCE(!type)) return -ENOENT; @@ -7674,7 +7678,7 @@ static int nf_tables_newobj(struct sk_buff *skb, const struct nfnl_info *info, if (!nft_use_inc(&table->use)) return -EMFILE; - type = nft_obj_type_get(net, objtype); + type = nft_obj_type_get(net, objtype, family); if (IS_ERR(type)) { err = PTR_ERR(type); goto err_type; diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c index 9f21953c7433..f735d79d8be5 100644 --- a/net/netfilter/nft_tunnel.c +++ b/net/netfilter/nft_tunnel.c @@ -713,6 +713,7 @@ static const struct nft_object_ops nft_tunnel_obj_ops = { static struct nft_object_type nft_tunnel_obj_type __read_mostly = { .type = NFT_OBJECT_TUNNEL, + .family = NFPROTO_NETDEV, .ops = &nft_tunnel_obj_ops, .maxattr = NFTA_TUNNEL_KEY_MAX, .policy = nft_tunnel_key_policy, -- cgit v1.2.3 From 97f7cf1cd80eeed3b7c808b7c12463295c751001 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Mon, 29 Jan 2024 10:57:01 +0100 Subject: netfilter: ipset: fix performance regression in swap operation The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead. Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback. Link: https://lore.kernel.org/lkml/C0829B10-EAA6-4809-874E-E1E9C05A8D84@automattic.com/ Fixes: 28628fa952fe ("netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test") Reported-by: Ale Crismani Reported-by: David Wang <00107082@163.com> Tested-by: David Wang <00107082@163.com> Signed-off-by: Jozsef Kadlecsik Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/ipset/ip_set.h | 4 ++++ net/netfilter/ipset/ip_set_bitmap_gen.h | 14 ++++++++++--- net/netfilter/ipset/ip_set_core.c | 37 +++++++++++++++++++++++++-------- net/netfilter/ipset/ip_set_hash_gen.h | 15 ++++++++++--- net/netfilter/ipset/ip_set_list_set.c | 13 +++++++++--- 5 files changed, 65 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h index e8c350a3ade1..e9f4f845d760 100644 --- a/include/linux/netfilter/ipset/ip_set.h +++ b/include/linux/netfilter/ipset/ip_set.h @@ -186,6 +186,8 @@ struct ip_set_type_variant { /* Return true if "b" set is the same as "a" * according to the create set parameters */ bool (*same_set)(const struct ip_set *a, const struct ip_set *b); + /* Cancel ongoing garbage collectors before destroying the set*/ + void (*cancel_gc)(struct ip_set *set); /* Region-locking is used */ bool region_lock; }; @@ -242,6 +244,8 @@ extern void ip_set_type_unregister(struct ip_set_type *set_type); /* A generic IP set */ struct ip_set { + /* For call_cru in destroy */ + struct rcu_head rcu; /* The name of the set */ char name[IPSET_MAXNAMELEN]; /* Lock protecting the set data */ diff --git a/net/netfilter/ipset/ip_set_bitmap_gen.h b/net/netfilter/ipset/ip_set_bitmap_gen.h index 21f7860e8fa1..cb48a2b9cb9f 100644 --- a/net/netfilter/ipset/ip_set_bitmap_gen.h +++ b/net/netfilter/ipset/ip_set_bitmap_gen.h @@ -30,6 +30,7 @@ #define mtype_del IPSET_TOKEN(MTYPE, _del) #define mtype_list IPSET_TOKEN(MTYPE, _list) #define mtype_gc IPSET_TOKEN(MTYPE, _gc) +#define mtype_cancel_gc IPSET_TOKEN(MTYPE, _cancel_gc) #define mtype MTYPE #define get_ext(set, map, id) ((map)->extensions + ((set)->dsize * (id))) @@ -59,9 +60,6 @@ mtype_destroy(struct ip_set *set) { struct mtype *map = set->data; - if (SET_WITH_TIMEOUT(set)) - del_timer_sync(&map->gc); - if (set->dsize && set->extensions & IPSET_EXT_DESTROY) mtype_ext_cleanup(set); ip_set_free(map->members); @@ -290,6 +288,15 @@ mtype_gc(struct timer_list *t) add_timer(&map->gc); } +static void +mtype_cancel_gc(struct ip_set *set) +{ + struct mtype *map = set->data; + + if (SET_WITH_TIMEOUT(set)) + del_timer_sync(&map->gc); +} + static const struct ip_set_type_variant mtype = { .kadt = mtype_kadt, .uadt = mtype_uadt, @@ -303,6 +310,7 @@ static const struct ip_set_type_variant mtype = { .head = mtype_head, .list = mtype_list, .same_set = mtype_same_set, + .cancel_gc = mtype_cancel_gc, }; #endif /* __IP_SET_BITMAP_IP_GEN_H */ diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c index 4c133e06be1d..bcaad9c009fe 100644 --- a/net/netfilter/ipset/ip_set_core.c +++ b/net/netfilter/ipset/ip_set_core.c @@ -1182,6 +1182,14 @@ ip_set_destroy_set(struct ip_set *set) kfree(set); } +static void +ip_set_destroy_set_rcu(struct rcu_head *head) +{ + struct ip_set *set = container_of(head, struct ip_set, rcu); + + ip_set_destroy_set(set); +} + static int ip_set_destroy(struct sk_buff *skb, const struct nfnl_info *info, const struct nlattr * const attr[]) { @@ -1193,8 +1201,6 @@ static int ip_set_destroy(struct sk_buff *skb, const struct nfnl_info *info, if (unlikely(protocol_min_failed(attr))) return -IPSET_ERR_PROTOCOL; - /* Must wait for flush to be really finished in list:set */ - rcu_barrier(); /* Commands are serialized and references are * protected by the ip_set_ref_lock. @@ -1206,8 +1212,10 @@ static int ip_set_destroy(struct sk_buff *skb, const struct nfnl_info *info, * counter, so if it's already zero, we can proceed * without holding the lock. */ - read_lock_bh(&ip_set_ref_lock); if (!attr[IPSET_ATTR_SETNAME]) { + /* Must wait for flush to be really finished in list:set */ + rcu_barrier(); + read_lock_bh(&ip_set_ref_lock); for (i = 0; i < inst->ip_set_max; i++) { s = ip_set(inst, i); if (s && (s->ref || s->ref_netlink)) { @@ -1221,6 +1229,8 @@ static int ip_set_destroy(struct sk_buff *skb, const struct nfnl_info *info, s = ip_set(inst, i); if (s) { ip_set(inst, i) = NULL; + /* Must cancel garbage collectors */ + s->variant->cancel_gc(s); ip_set_destroy_set(s); } } @@ -1228,6 +1238,9 @@ static int ip_set_destroy(struct sk_buff *skb, const struct nfnl_info *info, inst->is_destroyed = false; } else { u32 flags = flag_exist(info->nlh); + u16 features = 0; + + read_lock_bh(&ip_set_ref_lock); s = find_set_and_id(inst, nla_data(attr[IPSET_ATTR_SETNAME]), &i); if (!s) { @@ -1238,10 +1251,16 @@ static int ip_set_destroy(struct sk_buff *skb, const struct nfnl_info *info, ret = -IPSET_ERR_BUSY; goto out; } + features = s->type->features; ip_set(inst, i) = NULL; read_unlock_bh(&ip_set_ref_lock); - - ip_set_destroy_set(s); + if (features & IPSET_TYPE_NAME) { + /* Must wait for flush to be really finished */ + rcu_barrier(); + } + /* Must cancel garbage collectors */ + s->variant->cancel_gc(s); + call_rcu(&s->rcu, ip_set_destroy_set_rcu); } return 0; out: @@ -1394,9 +1413,6 @@ static int ip_set_swap(struct sk_buff *skb, const struct nfnl_info *info, ip_set(inst, to_id) = from; write_unlock_bh(&ip_set_ref_lock); - /* Make sure all readers of the old set pointers are completed. */ - synchronize_rcu(); - return 0; } @@ -2409,8 +2425,11 @@ ip_set_fini(void) { nf_unregister_sockopt(&so_set); nfnetlink_subsys_unregister(&ip_set_netlink_subsys); - unregister_pernet_subsys(&ip_set_net_ops); + + /* Wait for call_rcu() in destroy */ + rcu_barrier(); + pr_debug("these are the famous last words\n"); } diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h index cbf80da9a01c..1136510521a8 100644 --- a/net/netfilter/ipset/ip_set_hash_gen.h +++ b/net/netfilter/ipset/ip_set_hash_gen.h @@ -222,6 +222,7 @@ static const union nf_inet_addr zeromask = {}; #undef mtype_gc_do #undef mtype_gc #undef mtype_gc_init +#undef mtype_cancel_gc #undef mtype_variant #undef mtype_data_match @@ -266,6 +267,7 @@ static const union nf_inet_addr zeromask = {}; #define mtype_gc_do IPSET_TOKEN(MTYPE, _gc_do) #define mtype_gc IPSET_TOKEN(MTYPE, _gc) #define mtype_gc_init IPSET_TOKEN(MTYPE, _gc_init) +#define mtype_cancel_gc IPSET_TOKEN(MTYPE, _cancel_gc) #define mtype_variant IPSET_TOKEN(MTYPE, _variant) #define mtype_data_match IPSET_TOKEN(MTYPE, _data_match) @@ -450,9 +452,6 @@ mtype_destroy(struct ip_set *set) struct htype *h = set->data; struct list_head *l, *lt; - if (SET_WITH_TIMEOUT(set)) - cancel_delayed_work_sync(&h->gc.dwork); - mtype_ahash_destroy(set, ipset_dereference_nfnl(h->table), true); list_for_each_safe(l, lt, &h->ad) { list_del(l); @@ -599,6 +598,15 @@ mtype_gc_init(struct htable_gc *gc) queue_delayed_work(system_power_efficient_wq, &gc->dwork, HZ); } +static void +mtype_cancel_gc(struct ip_set *set) +{ + struct htype *h = set->data; + + if (SET_WITH_TIMEOUT(set)) + cancel_delayed_work_sync(&h->gc.dwork); +} + static int mtype_add(struct ip_set *set, void *value, const struct ip_set_ext *ext, struct ip_set_ext *mext, u32 flags); @@ -1441,6 +1449,7 @@ static const struct ip_set_type_variant mtype_variant = { .uref = mtype_uref, .resize = mtype_resize, .same_set = mtype_same_set, + .cancel_gc = mtype_cancel_gc, .region_lock = true, }; diff --git a/net/netfilter/ipset/ip_set_list_set.c b/net/netfilter/ipset/ip_set_list_set.c index e162636525cf..6c3f28bc59b3 100644 --- a/net/netfilter/ipset/ip_set_list_set.c +++ b/net/netfilter/ipset/ip_set_list_set.c @@ -426,9 +426,6 @@ list_set_destroy(struct ip_set *set) struct list_set *map = set->data; struct set_elem *e, *n; - if (SET_WITH_TIMEOUT(set)) - timer_shutdown_sync(&map->gc); - list_for_each_entry_safe(e, n, &map->members, list) { list_del(&e->list); ip_set_put_byindex(map->net, e->id); @@ -545,6 +542,15 @@ list_set_same_set(const struct ip_set *a, const struct ip_set *b) a->extensions == b->extensions; } +static void +list_set_cancel_gc(struct ip_set *set) +{ + struct list_set *map = set->data; + + if (SET_WITH_TIMEOUT(set)) + timer_shutdown_sync(&map->gc); +} + static const struct ip_set_type_variant set_variant = { .kadt = list_set_kadt, .uadt = list_set_uadt, @@ -558,6 +564,7 @@ static const struct ip_set_type_variant set_variant = { .head = list_set_head, .list = list_set_list, .same_set = list_set_same_set, + .cancel_gc = list_set_cancel_gc, }; static void -- cgit v1.2.3 From f9e9115d0c014dec3278d68823eaff159f98f4d6 Mon Sep 17 00:00:00 2001 From: Caleb Sander Date: Wed, 31 Jan 2024 09:43:13 -0700 Subject: nvme: take const cmd pointer in read-only helpers nvme_is_fabrics() and nvme_is_write() only read struct nvme_command, so take it by const pointer. This allows callers to pass a const pointer and communicates that these functions don't modify the command. Signed-off-by: Caleb Sander Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Keith Busch --- include/linux/nvme.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 68eff8c86ce3..bc605ec4a3fd 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -1812,7 +1812,7 @@ struct nvme_command { }; }; -static inline bool nvme_is_fabrics(struct nvme_command *cmd) +static inline bool nvme_is_fabrics(const struct nvme_command *cmd) { return cmd->common.opcode == nvme_fabrics_command; } @@ -1831,7 +1831,7 @@ struct nvme_error_slot { __u8 resv2[24]; }; -static inline bool nvme_is_write(struct nvme_command *cmd) +static inline bool nvme_is_write(const struct nvme_command *cmd) { /* * What a mess... -- cgit v1.2.3 From 4d322dce82a1d44f8c83f0f54f95dd1b8dcf46c9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 30 Jan 2024 18:42:35 +0000 Subject: af_unix: fix lockdep positive in sk_diag_dump_icons() syzbot reported a lockdep splat [1]. Blamed commit hinted about the possible lockdep violation, and code used unix_state_lock_nested() in an attempt to silence lockdep. It is not sufficient, because unix_state_lock_nested() is already used from unix_state_double_lock(). We need to use a separate subclass. This patch adds a distinct enumeration to make things more explicit. Also use swap() in unix_state_double_lock() as a clean up. v2: add a missing inline keyword to unix_state_lock_nested() [1] WARNING: possible circular locking dependency detected 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0 Not tainted syz-executor.1/2542 is trying to acquire lock: ffff88808b5df9e8 (rlock-AF_UNIX){+.+.}-{2:2}, at: skb_queue_tail+0x36/0x120 net/core/skbuff.c:3863 but task is already holding lock: ffff88808b5dfe70 (&u->lock/1){+.+.}-{2:2}, at: unix_dgram_sendmsg+0xfc7/0x2200 net/unix/af_unix.c:2089 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&u->lock/1){+.+.}-{2:2}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 sk_diag_dump_icons net/unix/diag.c:87 [inline] sk_diag_fill+0x6ea/0xfe0 net/unix/diag.c:157 sk_diag_dump net/unix/diag.c:196 [inline] unix_diag_dump+0x3e9/0x630 net/unix/diag.c:220 netlink_dump+0x5c1/0xcd0 net/netlink/af_netlink.c:2264 __netlink_dump_start+0x5d7/0x780 net/netlink/af_netlink.c:2370 netlink_dump_start include/linux/netlink.h:338 [inline] unix_diag_handler_dump+0x1c3/0x8f0 net/unix/diag.c:319 sock_diag_rcv_msg+0xe3/0x400 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2543 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:280 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7e6/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa37/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x39a/0x520 net/socket.c:1160 call_write_iter include/linux/fs.h:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa74/0xca0 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #0 (rlock-AF_UNIX){+.+.}-{2:2}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x1909/0x5ab0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 skb_queue_tail+0x36/0x120 net/core/skbuff.c:3863 unix_dgram_sendmsg+0x15d9/0x2200 net/unix/af_unix.c:2112 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x592/0x890 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmmsg+0x3b2/0x730 net/socket.c:2724 __do_sys_sendmmsg net/socket.c:2753 [inline] __se_sys_sendmmsg net/socket.c:2750 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2750 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&u->lock/1); lock(rlock-AF_UNIX); lock(&u->lock/1); lock(rlock-AF_UNIX); *** DEADLOCK *** 1 lock held by syz-executor.1/2542: #0: ffff88808b5dfe70 (&u->lock/1){+.+.}-{2:2}, at: unix_dgram_sendmsg+0xfc7/0x2200 net/unix/af_unix.c:2089 stack backtrace: CPU: 1 PID: 2542 Comm: syz-executor.1 Not tainted 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x366/0x490 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x1909/0x5ab0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 skb_queue_tail+0x36/0x120 net/core/skbuff.c:3863 unix_dgram_sendmsg+0x15d9/0x2200 net/unix/af_unix.c:2112 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x592/0x890 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmmsg+0x3b2/0x730 net/socket.c:2724 __do_sys_sendmmsg net/socket.c:2753 [inline] __se_sys_sendmmsg net/socket.c:2750 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2750 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f26d887cda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f26d95a60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f26d89abf80 RCX: 00007f26d887cda9 RDX: 000000000000003e RSI: 00000000200bd000 RDI: 0000000000000004 RBP: 00007f26d88c947a R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000008c0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f26d89abf80 R15: 00007ffcfe081a68 Fixes: 2aac7a2cb0d9 ("unix_diag: Pending connections IDs NLA") Reported-by: syzbot Signed-off-by: Eric Dumazet Reviewed-by: Kuniyuki Iwashima Link: https://lore.kernel.org/r/20240130184235.1620738-1-edumazet@google.com Signed-off-by: Jakub Kicinski --- include/net/af_unix.h | 20 ++++++++++++++------ net/unix/af_unix.c | 14 ++++++-------- net/unix/diag.c | 2 +- 3 files changed, 21 insertions(+), 15 deletions(-) (limited to 'include') diff --git a/include/net/af_unix.h b/include/net/af_unix.h index 49c4640027d8..afd40dce40f3 100644 --- a/include/net/af_unix.h +++ b/include/net/af_unix.h @@ -46,12 +46,6 @@ struct scm_stat { #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb)) -#define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) -#define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) -#define unix_state_lock_nested(s) \ - spin_lock_nested(&unix_sk(s)->lock, \ - SINGLE_DEPTH_NESTING) - /* The AF_UNIX socket */ struct unix_sock { /* WARNING: sk has to be the first member */ @@ -77,6 +71,20 @@ struct unix_sock { #define unix_sk(ptr) container_of_const(ptr, struct unix_sock, sk) #define unix_peer(sk) (unix_sk(sk)->peer) +#define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) +#define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) +enum unix_socket_lock_class { + U_LOCK_NORMAL, + U_LOCK_SECOND, /* for double locking, see unix_state_double_lock(). */ + U_LOCK_DIAG, /* used while dumping icons, see sk_diag_dump_icons(). */ +}; + +static inline void unix_state_lock_nested(struct sock *sk, + enum unix_socket_lock_class subclass) +{ + spin_lock_nested(&unix_sk(sk)->lock, subclass); +} + #define peer_wait peer_wq.wait long unix_inq_len(struct sock *sk); diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index ac1f2bc18fc9..30b178ebba60 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1344,13 +1344,11 @@ static void unix_state_double_lock(struct sock *sk1, struct sock *sk2) unix_state_lock(sk1); return; } - if (sk1 < sk2) { - unix_state_lock(sk1); - unix_state_lock_nested(sk2); - } else { - unix_state_lock(sk2); - unix_state_lock_nested(sk1); - } + if (sk1 > sk2) + swap(sk1, sk2); + + unix_state_lock(sk1); + unix_state_lock_nested(sk2, U_LOCK_SECOND); } static void unix_state_double_unlock(struct sock *sk1, struct sock *sk2) @@ -1591,7 +1589,7 @@ restart: goto out_unlock; } - unix_state_lock_nested(sk); + unix_state_lock_nested(sk, U_LOCK_SECOND); if (sk->sk_state != st) { unix_state_unlock(sk); diff --git a/net/unix/diag.c b/net/unix/diag.c index bec09a3a1d44..be19827eca36 100644 --- a/net/unix/diag.c +++ b/net/unix/diag.c @@ -84,7 +84,7 @@ static int sk_diag_dump_icons(struct sock *sk, struct sk_buff *nlskb) * queue lock. With the other's queue locked it's * OK to lock the state. */ - unix_state_lock_nested(req); + unix_state_lock_nested(req, U_LOCK_DIAG); peer = unix_sk(req)->peer; buf[i++] = (peer ? sock_i_ino(peer) : 0); unix_state_unlock(req); -- cgit v1.2.3 From 72a77d7631c6e392677c0134343cf5edcd3a4572 Mon Sep 17 00:00:00 2001 From: Richard Fitzgerald Date: Mon, 29 Jan 2024 16:27:26 +0000 Subject: ASoC: cs35l56: Fix to ensure ASP1 registers match cache Add a dummy SUPPLY widget connected to the ASP that forces the chip registers to match the regmap cache when the ASP is powered-up. On a SoundWire system the ASP is free for use as a chip-to-chip interconnect. This can be either for the firmware on multiple CS35L56 to share reference audio; or as a bridge to another device. If it is a firmware interconnect it is owned by the firmware and the Linux driver should avoid writing the registers. However. If it is a bridge then Linux may take over and handle it as a normal codec-to-codec link. CS35L56 is designed for SDCA and a generic SDCA driver would know nothing about these chip-specific registers. So if the ASP is being used on a SoundWire system the firmware sets up the ASP registers. This means that we can't assume the default state of the ASP registers. But we don't know the initial state that the firmware set them to until after the firmware has been downloaded and booted, which can take several seconds when downloading multiple amps. To avoid blocking probe() for several seconds waiting for the firmware, the silicon defaults are assumed. This allows the machine driver to setup the ASP configuration during probe() without being blocked. If the ASP is hooked up and used, the SUPPLY widget ensures that the chip registers match what was configured in the regmap cache. If the machine driver does not hook up the ASP, it is assumed that it won't call any functions to configure the ASP DAI. Therefore the regmap cache will be clean for these registers so a regcache_sync() will not overwrite the chip registers. If the DAI is not hooked up, the dummy SUPPLY widget will not be invoked so it will never force-overwrite the chip registers. Backport note: This won't apply cleanly to kernels older than v6.6. Signed-off-by: Richard Fitzgerald Fixes: e49611252900 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56") Link: https://msgid.link/r/20240129162737.497-8-rf@opensource.cirrus.com Signed-off-by: Mark Brown --- include/sound/cs35l56.h | 1 + sound/soc/codecs/cs35l56-shared.c | 41 +++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/cs35l56.c | 21 ++++++++++++++++++++ 3 files changed, 63 insertions(+) (limited to 'include') diff --git a/include/sound/cs35l56.h b/include/sound/cs35l56.h index 8c18e8b6d27d..4db36c893d9d 100644 --- a/include/sound/cs35l56.h +++ b/include/sound/cs35l56.h @@ -272,6 +272,7 @@ extern const char * const cs35l56_tx_input_texts[CS35L56_NUM_INPUT_SRC]; extern const unsigned int cs35l56_tx_input_values[CS35L56_NUM_INPUT_SRC]; int cs35l56_set_patch(struct cs35l56_base *cs35l56_base); +int cs35l56_force_sync_asp1_registers_from_cache(struct cs35l56_base *cs35l56_base); int cs35l56_mbox_send(struct cs35l56_base *cs35l56_base, unsigned int command); int cs35l56_firmware_shutdown(struct cs35l56_base *cs35l56_base); int cs35l56_wait_for_firmware_boot(struct cs35l56_base *cs35l56_base); diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c index 0cd572de73a9..35789ffc63af 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -195,6 +195,47 @@ static bool cs35l56_volatile_reg(struct device *dev, unsigned int reg) } } +/* + * The firmware boot sequence can overwrite the ASP1 config registers so that + * they don't match regmap's view of their values. Rewrite the values from the + * regmap cache into the hardware registers. + */ +int cs35l56_force_sync_asp1_registers_from_cache(struct cs35l56_base *cs35l56_base) +{ + struct reg_sequence asp1_regs[] = { + { .reg = CS35L56_ASP1_ENABLES1 }, + { .reg = CS35L56_ASP1_CONTROL1 }, + { .reg = CS35L56_ASP1_CONTROL2 }, + { .reg = CS35L56_ASP1_CONTROL3 }, + { .reg = CS35L56_ASP1_FRAME_CONTROL1 }, + { .reg = CS35L56_ASP1_FRAME_CONTROL5 }, + { .reg = CS35L56_ASP1_DATA_CONTROL1 }, + { .reg = CS35L56_ASP1_DATA_CONTROL5 }, + }; + int i, ret; + + /* Read values from regmap cache into a write sequence */ + for (i = 0; i < ARRAY_SIZE(asp1_regs); ++i) { + ret = regmap_read(cs35l56_base->regmap, asp1_regs[i].reg, &asp1_regs[i].def); + if (ret) + goto err; + } + + /* Write the values cache-bypassed so that they will be written to silicon */ + ret = regmap_multi_reg_write_bypassed(cs35l56_base->regmap, asp1_regs, + ARRAY_SIZE(asp1_regs)); + if (ret) + goto err; + + return 0; + +err: + dev_err(cs35l56_base->dev, "Failed to sync ASP1 registers: %d\n", ret); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_force_sync_asp1_registers_from_cache, SND_SOC_CS35L56_SHARED); + int cs35l56_mbox_send(struct cs35l56_base *cs35l56_base, unsigned int command) { unsigned int val; diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c index ea5d2b2eb82a..41aa79848b15 100644 --- a/sound/soc/codecs/cs35l56.c +++ b/sound/soc/codecs/cs35l56.c @@ -148,6 +148,21 @@ static SOC_VALUE_ENUM_SINGLE_DECL(cs35l56_sdw1tx4_enum, static const struct snd_kcontrol_new sdw1_tx4_mux = SOC_DAPM_ENUM("SDW1TX4 SRC", cs35l56_sdw1tx4_enum); +static int cs35l56_asp1_cfg_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct cs35l56_private *cs35l56 = snd_soc_component_get_drvdata(component); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + /* Override register values set by firmware boot */ + return cs35l56_force_sync_asp1_registers_from_cache(&cs35l56->base); + default: + return 0; + } +} + static int cs35l56_play_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { @@ -184,6 +199,9 @@ static const struct snd_soc_dapm_widget cs35l56_dapm_widgets[] = { SND_SOC_DAPM_REGULATOR_SUPPLY("VDD_B", 0, 0), SND_SOC_DAPM_REGULATOR_SUPPLY("VDD_AMP", 0, 0), + SND_SOC_DAPM_SUPPLY("ASP1 CFG", SND_SOC_NOPM, 0, 0, cs35l56_asp1_cfg_event, + SND_SOC_DAPM_PRE_PMU), + SND_SOC_DAPM_SUPPLY("PLAY", SND_SOC_NOPM, 0, 0, cs35l56_play_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), @@ -251,6 +269,9 @@ static const struct snd_soc_dapm_route cs35l56_audio_map[] = { { "AMP", NULL, "VDD_B" }, { "AMP", NULL, "VDD_AMP" }, + { "ASP1 Playback", NULL, "ASP1 CFG" }, + { "ASP1 Capture", NULL, "ASP1 CFG" }, + { "ASP1 Playback", NULL, "PLAY" }, { "SDW1 Playback", NULL, "PLAY" }, -- cgit v1.2.3 From f4ef5149953f2fc04907ca5b34db3df667dcddef Mon Sep 17 00:00:00 2001 From: Richard Fitzgerald Date: Mon, 29 Jan 2024 16:27:31 +0000 Subject: ASoC: cs35l56: Firmware file must match the version of preloaded firmware Check during initialization whether the firmware is already patched. If so, include the firmware version in the wm_adsp fwf_name string. If the firmware has already been patched by the BIOS the driver can only replace it if it has control of hard RESET. If the driver cannot replace the firmware, it can still load a wmfw (for ALSA control definitions) and/or a bin (for additional tunings). But these must match the version of firmware that is running on the CS35L56. The firmware is pre-patched if FIRMWARE_MISSING == 0. Including the firmware version in the fwf_name string will qualify the firmware file name: Normal (unpatched or replaceable firmware): cs35l56-rev-dsp1-misc[-system_name].[wmfw|bin] Preloaded firmware: cs35l56-rev[-s]-VVVVVV-dsp1-misc[-system_name].[wmfw|bin] Where: [-s] is an optional -s added into the name for a secured CS35L56 VVVVVV is the 24-bit firmware version in hexadecimal. Signed-off-by: Richard Fitzgerald Fixes: 608f1b0dbdde ("ASoC: cs35l56: Move DSP part string generation so that it is done only once") Link: https://msgid.link/r/20240129162737.497-13-rf@opensource.cirrus.com Signed-off-by: Mark Brown --- include/sound/cs35l56.h | 3 +++ sound/soc/codecs/cs35l56-shared.c | 36 ++++++++++++++++++++++++--- sound/soc/codecs/cs35l56.c | 52 ++++++++++++++++++++++----------------- 3 files changed, 65 insertions(+), 26 deletions(-) (limited to 'include') diff --git a/include/sound/cs35l56.h b/include/sound/cs35l56.h index 4db36c893d9d..5d6aefc41e64 100644 --- a/include/sound/cs35l56.h +++ b/include/sound/cs35l56.h @@ -75,6 +75,7 @@ #define CS35L56_DSP1_AHBM_WINDOW_DEBUG_0 0x25E2040 #define CS35L56_DSP1_AHBM_WINDOW_DEBUG_1 0x25E2044 #define CS35L56_DSP1_XMEM_UNPACKED24_0 0x2800000 +#define CS35L56_DSP1_FW_VER 0x2800010 #define CS35L56_DSP1_HALO_STATE_A1 0x2801E58 #define CS35L56_DSP1_HALO_STATE 0x28021E0 #define CS35L56_DSP1_PM_CUR_STATE_A1 0x2804000 @@ -285,6 +286,8 @@ int cs35l56_is_fw_reload_needed(struct cs35l56_base *cs35l56_base); int cs35l56_runtime_suspend_common(struct cs35l56_base *cs35l56_base); int cs35l56_runtime_resume_common(struct cs35l56_base *cs35l56_base, bool is_soundwire); void cs35l56_init_cs_dsp(struct cs35l56_base *cs35l56_base, struct cs_dsp *cs_dsp); +int cs35l56_read_prot_status(struct cs35l56_base *cs35l56_base, + bool *fw_missing, unsigned int *fw_version); int cs35l56_hw_init(struct cs35l56_base *cs35l56_base); int cs35l56_get_bclk_freq_id(unsigned int freq); void cs35l56_fill_supply_names(struct regulator_bulk_data *data); diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c index 9a70db0fa418..33835535ef84 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -628,10 +628,35 @@ void cs35l56_init_cs_dsp(struct cs35l56_base *cs35l56_base, struct cs_dsp *cs_ds } EXPORT_SYMBOL_NS_GPL(cs35l56_init_cs_dsp, SND_SOC_CS35L56_SHARED); +int cs35l56_read_prot_status(struct cs35l56_base *cs35l56_base, + bool *fw_missing, unsigned int *fw_version) +{ + unsigned int prot_status; + int ret; + + ret = regmap_read(cs35l56_base->regmap, CS35L56_PROTECTION_STATUS, &prot_status); + if (ret) { + dev_err(cs35l56_base->dev, "Get PROTECTION_STATUS failed: %d\n", ret); + return ret; + } + + *fw_missing = !!(prot_status & CS35L56_FIRMWARE_MISSING); + + ret = regmap_read(cs35l56_base->regmap, CS35L56_DSP1_FW_VER, fw_version); + if (ret) { + dev_err(cs35l56_base->dev, "Get FW VER failed: %d\n", ret); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_read_prot_status, SND_SOC_CS35L56_SHARED); + int cs35l56_hw_init(struct cs35l56_base *cs35l56_base) { int ret; - unsigned int devid, revid, otpid, secured; + unsigned int devid, revid, otpid, secured, fw_ver; + bool fw_missing; /* * When the system is not using a reset_gpio ensure the device is @@ -690,8 +715,13 @@ int cs35l56_hw_init(struct cs35l56_base *cs35l56_base) return ret; } - dev_info(cs35l56_base->dev, "Cirrus Logic CS35L56%s Rev %02X OTP%d\n", - cs35l56_base->secured ? "s" : "", cs35l56_base->rev, otpid); + ret = cs35l56_read_prot_status(cs35l56_base, &fw_missing, &fw_ver); + if (ret) + return ret; + + dev_info(cs35l56_base->dev, "Cirrus Logic CS35L56%s Rev %02X OTP%d fw:%d.%d.%d (patched=%u)\n", + cs35l56_base->secured ? "s" : "", cs35l56_base->rev, otpid, + fw_ver >> 16, (fw_ver >> 8) & 0xff, fw_ver & 0xff, !fw_missing); /* Wake source and *_BLOCKED interrupts default to unmasked, so mask them */ regmap_write(cs35l56_base->regmap, CS35L56_IRQ1_MASK_20, 0xffffffff); diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c index 8899c02c6dea..597677422547 100644 --- a/sound/soc/codecs/cs35l56.c +++ b/sound/soc/codecs/cs35l56.c @@ -804,7 +804,7 @@ static struct snd_soc_dai_driver cs35l56_dai[] = { } }; -static void cs35l56_secure_patch(struct cs35l56_private *cs35l56) +static void cs35l56_reinit_patch(struct cs35l56_private *cs35l56) { int ret; @@ -816,19 +816,10 @@ static void cs35l56_secure_patch(struct cs35l56_private *cs35l56) cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_REINIT); } -static void cs35l56_patch(struct cs35l56_private *cs35l56) +static void cs35l56_patch(struct cs35l56_private *cs35l56, bool firmware_missing) { - unsigned int firmware_missing; int ret; - ret = regmap_read(cs35l56->base.regmap, CS35L56_PROTECTION_STATUS, &firmware_missing); - if (ret) { - dev_err(cs35l56->base.dev, "Failed to read PROTECTION_STATUS: %d\n", ret); - return; - } - - firmware_missing &= CS35L56_FIRMWARE_MISSING; - /* * Disable SoundWire interrupts to prevent race with IRQ work. * Setting sdw_irq_no_unmask prevents the handler re-enabling @@ -901,34 +892,49 @@ static void cs35l56_dsp_work(struct work_struct *work) struct cs35l56_private *cs35l56 = container_of(work, struct cs35l56_private, dsp_work); + unsigned int firmware_version; + bool firmware_missing; + int ret; if (!cs35l56->base.init_done) return; pm_runtime_get_sync(cs35l56->base.dev); + ret = cs35l56_read_prot_status(&cs35l56->base, &firmware_missing, &firmware_version); + if (ret) + goto err; + /* Populate fw file qualifier with the revision and security state */ - if (!cs35l56->dsp.fwf_name) { - cs35l56->dsp.fwf_name = kasprintf(GFP_KERNEL, "%02x%s-dsp1", + kfree(cs35l56->dsp.fwf_name); + if (firmware_missing) { + cs35l56->dsp.fwf_name = kasprintf(GFP_KERNEL, "%02x-dsp1", cs35l56->base.rev); + } else { + /* Firmware files must match the running firmware version */ + cs35l56->dsp.fwf_name = kasprintf(GFP_KERNEL, + "%02x%s-%06x-dsp1", cs35l56->base.rev, - cs35l56->base.secured ? "-s" : ""); - if (!cs35l56->dsp.fwf_name) - goto err; + cs35l56->base.secured ? "-s" : "", + firmware_version); } + if (!cs35l56->dsp.fwf_name) + goto err; + dev_dbg(cs35l56->base.dev, "DSP fwf name: '%s' system name: '%s'\n", cs35l56->dsp.fwf_name, cs35l56->dsp.system_name); /* - * When the device is running in secure mode the firmware files can - * only contain insecure tunings and therefore we do not need to - * shutdown the firmware to apply them and can use the lower cost - * reinit sequence instead. + * The firmware cannot be patched if it is already running from + * patch RAM. In this case the firmware files are versioned to + * match the running firmware version and will only contain + * tunings. We do not need to shutdown the firmware to apply + * tunings so can use the lower cost reinit sequence instead. */ - if (cs35l56->base.secured) - cs35l56_secure_patch(cs35l56); + if (!firmware_missing) + cs35l56_reinit_patch(cs35l56); else - cs35l56_patch(cs35l56); + cs35l56_patch(cs35l56, firmware_missing); /* -- cgit v1.2.3 From 245eeff18d7a37693815250ae15979ce98c3d190 Mon Sep 17 00:00:00 2001 From: Richard Fitzgerald Date: Mon, 29 Jan 2024 16:27:32 +0000 Subject: ASoC: cs35l56: Load tunings for the correct speaker models If the "spk-id-gpios" property is present it points to GPIOs whose value must be used to select the correct bin file to match the speakers. Some manufacturers use multiple sources of speakers, which need different tunings for best performance. On these models the type of speaker fitted is indicated by the values of one or more GPIOs. The number formed by the GPIOs identifies the tuning required. The speaker ID must be used in combination with the subsystem ID (either from PCI SSID or cirrus,firmware-uid property), because the GPIOs can only indicate variants of a specific model. Signed-off-by: Richard Fitzgerald Fixes: 1a1c3d794ef6 ("ASoC: cs35l56: Use PCI SSID as the firmware UID") Link: https://msgid.link/r/20240129162737.497-14-rf@opensource.cirrus.com Signed-off-by: Mark Brown --- include/sound/cs35l56.h | 1 + sound/soc/codecs/cs35l56-shared.c | 36 ++++++++++++++++++++++++++++++++++++ sound/soc/codecs/cs35l56.c | 32 +++++++++++++++++++++++++++----- sound/soc/codecs/cs35l56.h | 1 + 4 files changed, 65 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/sound/cs35l56.h b/include/sound/cs35l56.h index 5d6aefc41e64..23da6298ab37 100644 --- a/include/sound/cs35l56.h +++ b/include/sound/cs35l56.h @@ -289,6 +289,7 @@ void cs35l56_init_cs_dsp(struct cs35l56_base *cs35l56_base, struct cs_dsp *cs_ds int cs35l56_read_prot_status(struct cs35l56_base *cs35l56_base, bool *fw_missing, unsigned int *fw_version); int cs35l56_hw_init(struct cs35l56_base *cs35l56_base); +int cs35l56_get_speaker_id(struct cs35l56_base *cs35l56_base); int cs35l56_get_bclk_freq_id(unsigned int freq); void cs35l56_fill_supply_names(struct regulator_bulk_data *data); diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c index 33835535ef84..02fba4bc0a14 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -5,6 +5,7 @@ // Copyright (C) 2023 Cirrus Logic, Inc. and // Cirrus Logic International Semiconductor Ltd. +#include #include #include #include @@ -736,6 +737,41 @@ int cs35l56_hw_init(struct cs35l56_base *cs35l56_base) } EXPORT_SYMBOL_NS_GPL(cs35l56_hw_init, SND_SOC_CS35L56_SHARED); +int cs35l56_get_speaker_id(struct cs35l56_base *cs35l56_base) +{ + struct gpio_descs *descs; + int speaker_id; + int i, ret; + + /* Read the speaker type qualifier from the motherboard GPIOs */ + descs = gpiod_get_array_optional(cs35l56_base->dev, "spk-id", GPIOD_IN); + if (!descs) { + return -ENOENT; + } else if (IS_ERR(descs)) { + ret = PTR_ERR(descs); + return dev_err_probe(cs35l56_base->dev, ret, "Failed to get spk-id-gpios\n"); + } + + speaker_id = 0; + for (i = 0; i < descs->ndescs; i++) { + ret = gpiod_get_value_cansleep(descs->desc[i]); + if (ret < 0) { + dev_err_probe(cs35l56_base->dev, ret, "Failed to read spk-id[%d]\n", i); + goto err; + } + + speaker_id |= (ret << i); + } + + dev_dbg(cs35l56_base->dev, "Speaker ID = %d\n", speaker_id); + ret = speaker_id; +err: + gpiod_put_array(descs); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_get_speaker_id, SND_SOC_CS35L56_SHARED); + static const u32 cs35l56_bclk_valid_for_pll_freq_table[] = { [0x0C] = 128000, [0x0F] = 256000, diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c index 597677422547..c23e29da4cfb 100644 --- a/sound/soc/codecs/cs35l56.c +++ b/sound/soc/codecs/cs35l56.c @@ -959,10 +959,19 @@ static int cs35l56_component_probe(struct snd_soc_component *component) if (!cs35l56->dsp.system_name && (snd_soc_card_get_pci_ssid(component->card, &vendor, &device) == 0)) { - cs35l56->dsp.system_name = devm_kasprintf(cs35l56->base.dev, - GFP_KERNEL, - "%04x%04x", - vendor, device); + /* Append a speaker qualifier if there is a speaker ID */ + if (cs35l56->speaker_id >= 0) { + cs35l56->dsp.system_name = devm_kasprintf(cs35l56->base.dev, + GFP_KERNEL, + "%04x%04x-spkid%d", + vendor, device, + cs35l56->speaker_id); + } else { + cs35l56->dsp.system_name = devm_kasprintf(cs35l56->base.dev, + GFP_KERNEL, + "%04x%04x", + vendor, device); + } if (!cs35l56->dsp.system_name) return -ENOMEM; } @@ -1245,7 +1254,13 @@ static int cs35l56_get_firmware_uid(struct cs35l56_private *cs35l56) if (ret < 0) return 0; - cs35l56->dsp.system_name = devm_kstrdup(dev, prop, GFP_KERNEL); + /* Append a speaker qualifier if there is a speaker ID */ + if (cs35l56->speaker_id >= 0) + cs35l56->dsp.system_name = devm_kasprintf(dev, GFP_KERNEL, "%s-spkid%d", + prop, cs35l56->speaker_id); + else + cs35l56->dsp.system_name = devm_kstrdup(dev, prop, GFP_KERNEL); + if (cs35l56->dsp.system_name == NULL) return -ENOMEM; @@ -1260,6 +1275,7 @@ int cs35l56_common_probe(struct cs35l56_private *cs35l56) init_completion(&cs35l56->init_completion); mutex_init(&cs35l56->base.irq_lock); + cs35l56->speaker_id = -ENOENT; dev_set_drvdata(cs35l56->base.dev, cs35l56); @@ -1296,6 +1312,12 @@ int cs35l56_common_probe(struct cs35l56_private *cs35l56) gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 1); } + ret = cs35l56_get_speaker_id(&cs35l56->base); + if ((ret < 0) && (ret != -ENOENT)) + goto err; + + cs35l56->speaker_id = ret; + ret = cs35l56_get_firmware_uid(cs35l56); if (ret != 0) goto err; diff --git a/sound/soc/codecs/cs35l56.h b/sound/soc/codecs/cs35l56.h index dc2fe4c91e67..596b141e3f96 100644 --- a/sound/soc/codecs/cs35l56.h +++ b/sound/soc/codecs/cs35l56.h @@ -45,6 +45,7 @@ struct cs35l56_private { bool sdw_attached; struct completion init_completion; + int speaker_id; u32 rx_mask; u32 tx_mask; u8 asp_slot_width; -- cgit v1.2.3 From 9e92b77ceb6f362eb2e7995dad6c7f9863053d97 Mon Sep 17 00:00:00 2001 From: Richard Fitzgerald Date: Mon, 29 Jan 2024 16:27:33 +0000 Subject: ASoC: cs35l56: Allow more time for firmware to boot The original 50ms timeout for firmware boot is not long enough for worst-case time to reboot after a firmware download. Increase the timeout to 250ms. Signed-off-by: Richard Fitzgerald Fixes: e49611252900 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56") Link: https://msgid.link/r/20240129162737.497-15-rf@opensource.cirrus.com Signed-off-by: Mark Brown --- include/sound/cs35l56.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/sound/cs35l56.h b/include/sound/cs35l56.h index 23da6298ab37..b24716ab2750 100644 --- a/include/sound/cs35l56.h +++ b/include/sound/cs35l56.h @@ -242,7 +242,7 @@ #define CS35L56_CONTROL_PORT_READY_US 2200 #define CS35L56_HALO_STATE_POLL_US 1000 -#define CS35L56_HALO_STATE_TIMEOUT_US 50000 +#define CS35L56_HALO_STATE_TIMEOUT_US 250000 #define CS35L56_RESET_PULSE_MIN_US 1100 #define CS35L56_WAKE_HOLD_TIME_US 1000 -- cgit v1.2.3 From 177fbbcb4ed6b306c1626a277fac3fb1c495a4c7 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 29 Jan 2024 13:14:13 +0100 Subject: wifi: cfg80211: detect stuck ECSA element in probe resp We recently added some validation that we don't try to connect to an AP that is currently in a channel switch process, since that might want the channel to be quiet or we might not be able to connect in time to hear the switching in a beacon. This was in commit c09c4f31998b ("wifi: mac80211: don't connect to an AP while it's in a CSA process"). However, we promptly got a report that this caused new connection failures, and it turns out that the AP that we now cannot connect to is permanently advertising an extended channel switch announcement, even with quiet. The AP in question was an Asus RT-AC53, with firmware 3.0.0.4.380_10760-g21a5898. As a first step, attempt to detect that we're dealing with such a situation, so mac80211 can use this later. Reported-by: coldolt Closes: https://lore.kernel.org/linux-wireless/CAJvGw+DQhBk_mHXeu6RTOds5iramMW2FbMB01VbKRA4YbHHDTA@mail.gmail.com/ Fixes: c09c4f31998b ("wifi: mac80211: don't connect to an AP while it's in a CSA process") Reviewed-by: Miriam Rachel Korenblit Link: https://msgid.link/20240129131413.246972c8775e.Ibf834d7f52f9951a353b6872383da710a7358338@changeid Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 4 ++++ net/wireless/scan.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 62 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index cf79656ce09c..2b54fdd8ca15 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -2910,6 +2910,8 @@ struct cfg80211_bss_ies { * own the beacon_ies, but they're just pointers to the ones from the * @hidden_beacon_bss struct) * @proberesp_ies: the information elements from the last Probe Response frame + * @proberesp_ecsa_stuck: ECSA element is stuck in the Probe Response frame, + * cannot rely on it having valid data * @hidden_beacon_bss: in case this BSS struct represents a probe response from * a BSS that hides the SSID in its beacon, this points to the BSS struct * that holds the beacon data. @beacon_ies is still valid, of course, and @@ -2950,6 +2952,8 @@ struct cfg80211_bss { u8 chains; s8 chain_signal[IEEE80211_MAX_CHAINS]; + u8 proberesp_ecsa_stuck:1; + u8 bssid_index; u8 max_bssid_indicator; diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 2249b1a89d1c..389a52c29bfc 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -1731,6 +1731,61 @@ static void cfg80211_update_hidden_bsses(struct cfg80211_internal_bss *known, } } +static void cfg80211_check_stuck_ecsa(struct cfg80211_registered_device *rdev, + struct cfg80211_internal_bss *known, + const struct cfg80211_bss_ies *old) +{ + const struct ieee80211_ext_chansw_ie *ecsa; + const struct element *elem_new, *elem_old; + const struct cfg80211_bss_ies *new, *bcn; + + if (known->pub.proberesp_ecsa_stuck) + return; + + new = rcu_dereference_protected(known->pub.proberesp_ies, + lockdep_is_held(&rdev->bss_lock)); + if (WARN_ON(!new)) + return; + + if (new->tsf - old->tsf < USEC_PER_SEC) + return; + + elem_old = cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN, + old->data, old->len); + if (!elem_old) + return; + + elem_new = cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN, + new->data, new->len); + if (!elem_new) + return; + + bcn = rcu_dereference_protected(known->pub.beacon_ies, + lockdep_is_held(&rdev->bss_lock)); + if (bcn && + cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN, + bcn->data, bcn->len)) + return; + + if (elem_new->datalen != elem_old->datalen) + return; + if (elem_new->datalen < sizeof(struct ieee80211_ext_chansw_ie)) + return; + if (memcmp(elem_new->data, elem_old->data, elem_new->datalen)) + return; + + ecsa = (void *)elem_new->data; + + if (!ecsa->mode) + return; + + if (ecsa->new_ch_num != + ieee80211_frequency_to_channel(known->pub.channel->center_freq)) + return; + + known->pub.proberesp_ecsa_stuck = 1; +} + static bool cfg80211_update_known_bss(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *known, @@ -1750,8 +1805,10 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev, /* Override possible earlier Beacon frame IEs */ rcu_assign_pointer(known->pub.ies, new->pub.proberesp_ies); - if (old) + if (old) { + cfg80211_check_stuck_ecsa(rdev, known, old); kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head); + } } if (rcu_access_pointer(new->pub.beacon_ies)) { -- cgit v1.2.3 From 54ce1927eb787f7bbb7ee664841c8f5932703f39 Mon Sep 17 00:00:00 2001 From: Ira Weiny Date: Wed, 31 Jan 2024 15:55:38 -0800 Subject: cxl/cper: Fix errant CPER prints for CXL events Jonathan reports that CXL CPER events dump an extra generic error message. {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1 {1}[Hardware Error]: event severity: recoverable {1}[Hardware Error]: Error 0, type: recoverable {1}[Hardware Error]: section type: unknown, fbcd0a77-c260-417f-85a9-088b1621eba6 {1}[Hardware Error]: section length: 0x90 {1}[Hardware Error]: 00000000: 00000090 00000007 00000000 0d938086 ................ {1}[Hardware Error]: 00000010: 00100000 00000000 00040000 00000000 ................ ... CXL events were rerouted though the CXL subsystem for additional processing. However, when that work was done it was missed that cper_estatus_print_section() continued with a generic error message which is confusing. Teach CPER print code to ignore printing details of some section types. Assign the CXL event GUIDs to this set to prevent confusing unknown prints. Reported-by: Jonathan Cameron Suggested-by: Jonathan Cameron Signed-off-by: Ira Weiny Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Reviewed-by: Alison Schofield Signed-off-by: Ard Biesheuvel --- drivers/acpi/apei/ghes.c | 26 -------------------------- drivers/firmware/efi/cper.c | 19 +++++++++++++++++++ include/linux/cper.h | 23 +++++++++++++++++++++++ 3 files changed, 42 insertions(+), 26 deletions(-) (limited to 'include') diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 7b7c605166e0..fe825a432c5b 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -680,32 +680,6 @@ static void ghes_defer_non_standard_event(struct acpi_hest_generic_data *gdata, static DECLARE_RWSEM(cxl_cper_rw_sem); static cxl_cper_callback cper_callback; -/* CXL Event record UUIDs are formatted as GUIDs and reported in section type */ - -/* - * General Media Event Record - * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 - */ -#define CPER_SEC_CXL_GEN_MEDIA_GUID \ - GUID_INIT(0xfbcd0a77, 0xc260, 0x417f, \ - 0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6) - -/* - * DRAM Event Record - * CXL rev 3.0 section 8.2.9.2.1.2; Table 8-44 - */ -#define CPER_SEC_CXL_DRAM_GUID \ - GUID_INIT(0x601dcbb3, 0x9c06, 0x4eab, \ - 0xb8, 0xaf, 0x4e, 0x9b, 0xfb, 0x5c, 0x96, 0x24) - -/* - * Memory Module Event Record - * CXL rev 3.0 section 8.2.9.2.1.3; Table 8-45 - */ -#define CPER_SEC_CXL_MEM_MODULE_GUID \ - GUID_INIT(0xfe927475, 0xdd59, 0x4339, \ - 0xa5, 0x86, 0x79, 0xba, 0xb1, 0x13, 0xb7, 0x74) - static void cxl_cper_post_event(enum cxl_event_type event_type, struct cxl_cper_event_rec *rec) { diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index 35c37f667781..9b3884ff81e6 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -523,6 +523,17 @@ static void cper_print_tstamp(const char *pfx, } } +struct ignore_section { + guid_t guid; + const char *name; +}; + +static const struct ignore_section ignore_sections[] = { + { .guid = CPER_SEC_CXL_GEN_MEDIA_GUID, .name = "CXL General Media Event" }, + { .guid = CPER_SEC_CXL_DRAM_GUID, .name = "CXL DRAM Event" }, + { .guid = CPER_SEC_CXL_MEM_MODULE_GUID, .name = "CXL Memory Module Event" }, +}; + static void cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata, int sec_no) @@ -543,6 +554,14 @@ cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text); snprintf(newpfx, sizeof(newpfx), "%s ", pfx); + + for (int i = 0; i < ARRAY_SIZE(ignore_sections); i++) { + if (guid_equal(sec_type, &ignore_sections[i].guid)) { + printk("%ssection_type: %s\n", newpfx, ignore_sections[i].name); + return; + } + } + if (guid_equal(sec_type, &CPER_SEC_PROC_GENERIC)) { struct cper_sec_proc_generic *proc_err = acpi_hest_get_payload(gdata); diff --git a/include/linux/cper.h b/include/linux/cper.h index c1a7dc325121..265b0f8fc0b3 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -90,6 +90,29 @@ enum { GUID_INIT(0x667DD791, 0xC6B3, 0x4c27, 0x8A, 0x6B, 0x0F, 0x8E, \ 0x72, 0x2D, 0xEB, 0x41) +/* CXL Event record UUIDs are formatted as GUIDs and reported in section type */ +/* + * General Media Event Record + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 + */ +#define CPER_SEC_CXL_GEN_MEDIA_GUID \ + GUID_INIT(0xfbcd0a77, 0xc260, 0x417f, \ + 0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6) +/* + * DRAM Event Record + * CXL rev 3.0 section 8.2.9.2.1.2; Table 8-44 + */ +#define CPER_SEC_CXL_DRAM_GUID \ + GUID_INIT(0x601dcbb3, 0x9c06, 0x4eab, \ + 0xb8, 0xaf, 0x4e, 0x9b, 0xfb, 0x5c, 0x96, 0x24) +/* + * Memory Module Event Record + * CXL rev 3.0 section 8.2.9.2.1.3; Table 8-45 + */ +#define CPER_SEC_CXL_MEM_MODULE_GUID \ + GUID_INIT(0xfe927475, 0xdd59, 0x4339, \ + 0xa5, 0x86, 0x79, 0xba, 0xb1, 0x13, 0xb7, 0x74) + /* * Flags bits definitions for flags in struct cper_record_header * If set, the error has been recovered -- cgit v1.2.3 From 862cf85fef85becc55a173387527adb4f076fab0 Mon Sep 17 00:00:00 2001 From: Nuno Sa Date: Wed, 31 Jan 2024 10:16:47 +0100 Subject: iio: commom: st_sensors: ensure proper DMA alignment Aligning the buffer to the L1 cache is not sufficient in some platforms as they might have larger cacheline sizes for caches after L1 and thus, we can't guarantee DMA safety. That was the whole reason to introduce IIO_DMA_MINALIGN in [1]. Do the same for st_sensors common buffer. While at it, moved the odr_lock before buffer_data as we definitely don't want any other data to share a cacheline with the buffer. [1]: https://lore.kernel.org/linux-iio/20220508175712.647246-2-jic23@kernel.org/ Fixes: e031d5f558f1 ("iio:st_sensors: remove buffer allocation at each buffer enable") Signed-off-by: Nuno Sa Cc: Link: https://lore.kernel.org/r/20240131-dev_dma_safety_stm-v2-1-580c07fae51b@analog.com Signed-off-by: Jonathan Cameron --- include/linux/iio/common/st_sensors.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index 607c3a89a647..f9ae5cdd884f 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -258,9 +258,9 @@ struct st_sensor_data { bool hw_irq_trigger; s64 hw_timestamp; - char buffer_data[ST_SENSORS_MAX_BUFFER_SIZE] ____cacheline_aligned; - struct mutex odr_lock; + + char buffer_data[ST_SENSORS_MAX_BUFFER_SIZE] __aligned(IIO_DMA_MINALIGN); }; #ifdef CONFIG_IIO_BUFFER -- cgit v1.2.3 From 41b7fa157ea1c8c3a575ca7f5f32034de9bee3ae Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 2 Feb 2024 15:19:16 +0000 Subject: rxrpc: Fix counting of new acks and nacks Fix the counting of new acks and nacks when parsing a packet - something that is used in congestion control. As the code stands, it merely notes if there are any nacks whereas what we really should do is compare the previous SACK table to the new one, assuming we get two successive ACK packets with nacks in them. However, we really don't want to do that if we can avoid it as the tables might not correspond directly as one may be shifted from the other - something that will only get harder to deal with once extended ACK tables come into full use (with a capacity of up to 8192). Instead, count the number of nacks shifted out of the old SACK, the number of nacks retained in the portion still active and the number of new acks and nacks in the new table then calculate what we need. Note this ends up a bit of an estimate as the Rx protocol allows acks to be withdrawn by the receiver and packets requested to be retransmitted. Fixes: d57a3a151660 ("rxrpc: Save last ACK's SACK table rather than marking txbufs") Signed-off-by: David Howells cc: Marc Dionne cc: "David S. Miller" cc: Eric Dumazet cc: Jakub Kicinski cc: Paolo Abeni cc: linux-afs@lists.infradead.org cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- include/trace/events/rxrpc.h | 8 +-- net/rxrpc/ar-internal.h | 20 ++++++-- net/rxrpc/call_event.c | 6 ++- net/rxrpc/call_object.c | 1 + net/rxrpc/input.c | 115 ++++++++++++++++++++++++++++++++++++------- 5 files changed, 122 insertions(+), 28 deletions(-) (limited to 'include') diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h index 4c1ef7b3705c..87b8de9b6c1c 100644 --- a/include/trace/events/rxrpc.h +++ b/include/trace/events/rxrpc.h @@ -128,6 +128,7 @@ EM(rxrpc_skb_eaten_by_unshare_nomem, "ETN unshar-nm") \ EM(rxrpc_skb_get_conn_secured, "GET conn-secd") \ EM(rxrpc_skb_get_conn_work, "GET conn-work") \ + EM(rxrpc_skb_get_last_nack, "GET last-nack") \ EM(rxrpc_skb_get_local_work, "GET locl-work") \ EM(rxrpc_skb_get_reject_work, "GET rej-work ") \ EM(rxrpc_skb_get_to_recvmsg, "GET to-recv ") \ @@ -141,6 +142,7 @@ EM(rxrpc_skb_put_error_report, "PUT error-rep") \ EM(rxrpc_skb_put_input, "PUT input ") \ EM(rxrpc_skb_put_jumbo_subpacket, "PUT jumbo-sub") \ + EM(rxrpc_skb_put_last_nack, "PUT last-nack") \ EM(rxrpc_skb_put_purge, "PUT purge ") \ EM(rxrpc_skb_put_rotate, "PUT rotate ") \ EM(rxrpc_skb_put_unknown, "PUT unknown ") \ @@ -1552,7 +1554,7 @@ TRACE_EVENT(rxrpc_congest, memcpy(&__entry->sum, summary, sizeof(__entry->sum)); ), - TP_printk("c=%08x r=%08x %s q=%08x %s cw=%u ss=%u nA=%u,%u+%u r=%u b=%u u=%u d=%u l=%x%s%s%s", + TP_printk("c=%08x r=%08x %s q=%08x %s cw=%u ss=%u nA=%u,%u+%u,%u b=%u u=%u d=%u l=%x%s%s%s", __entry->call, __entry->ack_serial, __print_symbolic(__entry->sum.ack_reason, rxrpc_ack_names), @@ -1560,9 +1562,9 @@ TRACE_EVENT(rxrpc_congest, __print_symbolic(__entry->sum.mode, rxrpc_congest_modes), __entry->sum.cwnd, __entry->sum.ssthresh, - __entry->sum.nr_acks, __entry->sum.saw_nacks, + __entry->sum.nr_acks, __entry->sum.nr_retained_nacks, __entry->sum.nr_new_acks, - __entry->sum.nr_rot_new_acks, + __entry->sum.nr_new_nacks, __entry->top - __entry->hard_ack, __entry->sum.cumulative_acks, __entry->sum.dup_acks, diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index b4ab26c3718a..7818aae1be8e 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -199,11 +199,19 @@ struct rxrpc_host_header { */ struct rxrpc_skb_priv { struct rxrpc_connection *conn; /* Connection referred to (poke packet) */ - u16 offset; /* Offset of data */ - u16 len; /* Length of data */ - u8 flags; + union { + struct { + u16 offset; /* Offset of data */ + u16 len; /* Length of data */ + u8 flags; #define RXRPC_RX_VERIFIED 0x01 - + }; + struct { + rxrpc_seq_t first_ack; /* First packet in acks table */ + u8 nr_acks; /* Number of acks+nacks */ + u8 nr_nacks; /* Number of nacks */ + }; + }; struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ }; @@ -692,6 +700,7 @@ struct rxrpc_call { u8 cong_dup_acks; /* Count of ACKs showing missing packets */ u8 cong_cumul_acks; /* Cumulative ACK count */ ktime_t cong_tstamp; /* Last time cwnd was changed */ + struct sk_buff *cong_last_nack; /* Last ACK with nacks received */ /* Receive-phase ACK management (ACKs we send). */ u8 ackr_reason; /* reason to ACK */ @@ -729,7 +738,8 @@ struct rxrpc_call { struct rxrpc_ack_summary { u16 nr_acks; /* Number of ACKs in packet */ u16 nr_new_acks; /* Number of new ACKs in packet */ - u16 nr_rot_new_acks; /* Number of rotated new ACKs */ + u16 nr_new_nacks; /* Number of new nacks in packet */ + u16 nr_retained_nacks; /* Number of nacks retained between ACKs */ u8 ack_reason; bool saw_nacks; /* Saw NACKs in packet */ bool new_low_nack; /* T if new low NACK found */ diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c index c61efe08695d..0f78544d043b 100644 --- a/net/rxrpc/call_event.c +++ b/net/rxrpc/call_event.c @@ -112,6 +112,7 @@ static void rxrpc_congestion_timeout(struct rxrpc_call *call) void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb) { struct rxrpc_ackpacket *ack = NULL; + struct rxrpc_skb_priv *sp; struct rxrpc_txbuf *txb; unsigned long resend_at; rxrpc_seq_t transmitted = READ_ONCE(call->tx_transmitted); @@ -139,14 +140,15 @@ void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb) * explicitly NAK'd packets. */ if (ack_skb) { + sp = rxrpc_skb(ack_skb); ack = (void *)ack_skb->data + sizeof(struct rxrpc_wire_header); - for (i = 0; i < ack->nAcks; i++) { + for (i = 0; i < sp->nr_acks; i++) { rxrpc_seq_t seq; if (ack->acks[i] & 1) continue; - seq = ntohl(ack->firstPacket) + i; + seq = sp->first_ack + i; if (after(txb->seq, transmitted)) break; if (after(txb->seq, seq)) diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index 0943e54370ba..9fc9a6c3f685 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -686,6 +686,7 @@ static void rxrpc_destroy_call(struct work_struct *work) del_timer_sync(&call->timer); + rxrpc_free_skb(call->cong_last_nack, rxrpc_skb_put_last_nack); rxrpc_cleanup_ring(call); while ((txb = list_first_entry_or_null(&call->tx_sendmsg, struct rxrpc_txbuf, call_link))) { diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c index 92495e73b869..9691de00ade7 100644 --- a/net/rxrpc/input.c +++ b/net/rxrpc/input.c @@ -45,11 +45,9 @@ static void rxrpc_congestion_management(struct rxrpc_call *call, } cumulative_acks += summary->nr_new_acks; - cumulative_acks += summary->nr_rot_new_acks; if (cumulative_acks > 255) cumulative_acks = 255; - summary->mode = call->cong_mode; summary->cwnd = call->cong_cwnd; summary->ssthresh = call->cong_ssthresh; summary->cumulative_acks = cumulative_acks; @@ -151,6 +149,7 @@ out_no_clear_ca: cwnd = RXRPC_TX_MAX_WINDOW; call->cong_cwnd = cwnd; call->cong_cumul_acks = cumulative_acks; + summary->mode = call->cong_mode; trace_rxrpc_congest(call, summary, acked_serial, change); if (resend) rxrpc_resend(call, skb); @@ -213,7 +212,6 @@ static bool rxrpc_rotate_tx_window(struct rxrpc_call *call, rxrpc_seq_t to, list_for_each_entry_rcu(txb, &call->tx_buffer, call_link, false) { if (before_eq(txb->seq, call->acks_hard_ack)) continue; - summary->nr_rot_new_acks++; if (test_bit(RXRPC_TXBUF_LAST, &txb->flags)) { set_bit(RXRPC_CALL_TX_LAST, &call->flags); rot_last = true; @@ -254,6 +252,11 @@ static void rxrpc_end_tx_phase(struct rxrpc_call *call, bool reply_begun, { ASSERT(test_bit(RXRPC_CALL_TX_LAST, &call->flags)); + if (unlikely(call->cong_last_nack)) { + rxrpc_free_skb(call->cong_last_nack, rxrpc_skb_put_last_nack); + call->cong_last_nack = NULL; + } + switch (__rxrpc_call_state(call)) { case RXRPC_CALL_CLIENT_SEND_REQUEST: case RXRPC_CALL_CLIENT_AWAIT_REPLY: @@ -702,6 +705,43 @@ static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb, wake_up(&call->waitq); } +/* + * Determine how many nacks from the previous ACK have now been satisfied. + */ +static rxrpc_seq_t rxrpc_input_check_prev_ack(struct rxrpc_call *call, + struct rxrpc_ack_summary *summary, + rxrpc_seq_t seq) +{ + struct sk_buff *skb = call->cong_last_nack; + struct rxrpc_ackpacket ack; + struct rxrpc_skb_priv *sp = rxrpc_skb(skb); + unsigned int i, new_acks = 0, retained_nacks = 0; + rxrpc_seq_t old_seq = sp->first_ack; + u8 *acks = skb->data + sizeof(struct rxrpc_wire_header) + sizeof(ack); + + if (after_eq(seq, old_seq + sp->nr_acks)) { + summary->nr_new_acks += sp->nr_nacks; + summary->nr_new_acks += seq - (old_seq + sp->nr_acks); + summary->nr_retained_nacks = 0; + } else if (seq == old_seq) { + summary->nr_retained_nacks = sp->nr_nacks; + } else { + for (i = 0; i < sp->nr_acks; i++) { + if (acks[i] == RXRPC_ACK_TYPE_NACK) { + if (before(old_seq + i, seq)) + new_acks++; + else + retained_nacks++; + } + } + + summary->nr_new_acks += new_acks; + summary->nr_retained_nacks = retained_nacks; + } + + return old_seq + sp->nr_acks; +} + /* * Process individual soft ACKs. * @@ -711,25 +751,51 @@ static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb, * the timer on the basis that the peer might just not have processed them at * the time the ACK was sent. */ -static void rxrpc_input_soft_acks(struct rxrpc_call *call, u8 *acks, - rxrpc_seq_t seq, int nr_acks, - struct rxrpc_ack_summary *summary) +static void rxrpc_input_soft_acks(struct rxrpc_call *call, + struct rxrpc_ack_summary *summary, + struct sk_buff *skb, + rxrpc_seq_t seq, + rxrpc_seq_t since) { - unsigned int i; + struct rxrpc_skb_priv *sp = rxrpc_skb(skb); + unsigned int i, old_nacks = 0; + rxrpc_seq_t lowest_nak = seq + sp->nr_acks; + u8 *acks = skb->data + sizeof(struct rxrpc_wire_header) + sizeof(struct rxrpc_ackpacket); - for (i = 0; i < nr_acks; i++) { + for (i = 0; i < sp->nr_acks; i++) { if (acks[i] == RXRPC_ACK_TYPE_ACK) { summary->nr_acks++; - summary->nr_new_acks++; + if (after_eq(seq, since)) + summary->nr_new_acks++; } else { - if (!summary->saw_nacks && - call->acks_lowest_nak != seq + i) { - call->acks_lowest_nak = seq + i; - summary->new_low_nack = true; - } summary->saw_nacks = true; + if (before(seq, since)) { + /* Overlap with previous ACK */ + old_nacks++; + } else { + summary->nr_new_nacks++; + sp->nr_nacks++; + } + + if (before(seq, lowest_nak)) + lowest_nak = seq; } + seq++; + } + + if (lowest_nak != call->acks_lowest_nak) { + call->acks_lowest_nak = lowest_nak; + summary->new_low_nack = true; } + + /* We *can* have more nacks than we did - the peer is permitted to drop + * packets it has soft-acked and re-request them. Further, it is + * possible for the nack distribution to change whilst the number of + * nacks stays the same or goes down. + */ + if (old_nacks < summary->nr_retained_nacks) + summary->nr_new_acks += summary->nr_retained_nacks - old_nacks; + summary->nr_retained_nacks = old_nacks; } /* @@ -773,7 +839,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) struct rxrpc_skb_priv *sp = rxrpc_skb(skb); struct rxrpc_ackinfo info; rxrpc_serial_t ack_serial, acked_serial; - rxrpc_seq_t first_soft_ack, hard_ack, prev_pkt; + rxrpc_seq_t first_soft_ack, hard_ack, prev_pkt, since; int nr_acks, offset, ioffset; _enter(""); @@ -789,6 +855,8 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) prev_pkt = ntohl(ack.previousPacket); hard_ack = first_soft_ack - 1; nr_acks = ack.nAcks; + sp->first_ack = first_soft_ack; + sp->nr_acks = nr_acks; summary.ack_reason = (ack.reason < RXRPC_ACK__INVALID ? ack.reason : RXRPC_ACK__INVALID); @@ -858,6 +926,16 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) if (nr_acks > 0) skb_condense(skb); + if (call->cong_last_nack) { + since = rxrpc_input_check_prev_ack(call, &summary, first_soft_ack); + rxrpc_free_skb(call->cong_last_nack, rxrpc_skb_put_last_nack); + call->cong_last_nack = NULL; + } else { + summary.nr_new_acks = first_soft_ack - call->acks_first_seq; + call->acks_lowest_nak = first_soft_ack + nr_acks; + since = first_soft_ack; + } + call->acks_latest_ts = skb->tstamp; call->acks_first_seq = first_soft_ack; call->acks_prev_seq = prev_pkt; @@ -866,7 +944,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) case RXRPC_ACK_PING: break; default: - if (after(acked_serial, call->acks_highest_serial)) + if (acked_serial && after(acked_serial, call->acks_highest_serial)) call->acks_highest_serial = acked_serial; break; } @@ -905,8 +983,9 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) if (nr_acks > 0) { if (offset > (int)skb->len - nr_acks) return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_short_sack); - rxrpc_input_soft_acks(call, skb->data + offset, first_soft_ack, - nr_acks, &summary); + rxrpc_input_soft_acks(call, &summary, skb, first_soft_ack, since); + rxrpc_get_skb(skb, rxrpc_skb_get_last_nack); + call->cong_last_nack = skb; } if (test_bit(RXRPC_CALL_TX_LAST, &call->flags) && -- cgit v1.2.3 From 34a1066981a967eab619938e7b35a9be6b4c34e1 Mon Sep 17 00:00:00 2001 From: Gergo Koteles Date: Sun, 4 Feb 2024 21:01:17 +0100 Subject: ASoC: tas2781: add module parameter to tascodec_init() The tascodec_init() of the snd-soc-tas2781-comlib module is called from snd-soc-tas2781-i2c and snd-hda-scodec-tas2781-i2c modules. It calls request_firmware_nowait() with parameter THIS_MODULE and a cont/callback from the latter modules. The latter modules can be removed while their callbacks are running, resulting in a general protection failure. Add module parameter to tascodec_init() so request_firmware_nowait() can be called with the module of the callback. Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver") CC: stable@vger.kernel.org Signed-off-by: Gergo Koteles Link: https://lore.kernel.org/r/118dad922cef50525e5aab09badef2fa0eb796e5.1707076603.git.soyer@irl.hu Signed-off-by: Mark Brown --- include/sound/tas2781.h | 1 + sound/pci/hda/tas2781_hda_i2c.c | 2 +- sound/soc/codecs/tas2781-comlib.c | 3 ++- sound/soc/codecs/tas2781-i2c.c | 2 +- 4 files changed, 5 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h index b00d65417c31..9aff384941de 100644 --- a/include/sound/tas2781.h +++ b/include/sound/tas2781.h @@ -142,6 +142,7 @@ struct tasdevice_priv { void tas2781_reset(struct tasdevice_priv *tas_dev); int tascodec_init(struct tasdevice_priv *tas_priv, void *codec, + struct module *module, void (*cont)(const struct firmware *fw, void *context)); struct tasdevice_priv *tasdevice_kzalloc(struct i2c_client *i2c); int tasdevice_init(struct tasdevice_priv *tas_priv); diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c index 2dd809de62e5..1bfb00102a77 100644 --- a/sound/pci/hda/tas2781_hda_i2c.c +++ b/sound/pci/hda/tas2781_hda_i2c.c @@ -710,7 +710,7 @@ static int tas2781_hda_bind(struct device *dev, struct device *master, strscpy(comps->name, dev_name(dev), sizeof(comps->name)); - ret = tascodec_init(tas_hda->priv, codec, tasdev_fw_ready); + ret = tascodec_init(tas_hda->priv, codec, THIS_MODULE, tasdev_fw_ready); if (!ret) comps->playback_hook = tas2781_hda_playback_hook; diff --git a/sound/soc/codecs/tas2781-comlib.c b/sound/soc/codecs/tas2781-comlib.c index b7e56ceb1acf..5d0e5348b361 100644 --- a/sound/soc/codecs/tas2781-comlib.c +++ b/sound/soc/codecs/tas2781-comlib.c @@ -267,6 +267,7 @@ void tas2781_reset(struct tasdevice_priv *tas_dev) EXPORT_SYMBOL_GPL(tas2781_reset); int tascodec_init(struct tasdevice_priv *tas_priv, void *codec, + struct module *module, void (*cont)(const struct firmware *fw, void *context)) { int ret = 0; @@ -280,7 +281,7 @@ int tascodec_init(struct tasdevice_priv *tas_priv, void *codec, tas_priv->dev_name, tas_priv->ndev); crc8_populate_msb(tas_priv->crc8_lkp_tbl, TASDEVICE_CRC8_POLYNOMIAL); tas_priv->codec = codec; - ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, + ret = request_firmware_nowait(module, FW_ACTION_UEVENT, tas_priv->rca_binaryname, tas_priv->dev, GFP_KERNEL, tas_priv, cont); if (ret) diff --git a/sound/soc/codecs/tas2781-i2c.c b/sound/soc/codecs/tas2781-i2c.c index 32913bd1a623..b5abff230e43 100644 --- a/sound/soc/codecs/tas2781-i2c.c +++ b/sound/soc/codecs/tas2781-i2c.c @@ -566,7 +566,7 @@ static int tasdevice_codec_probe(struct snd_soc_component *codec) { struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec); - return tascodec_init(tas_priv, codec, tasdevice_fw_ready); + return tascodec_init(tas_priv, codec, THIS_MODULE, tasdevice_fw_ready); } static void tasdevice_deinit(void *context) -- cgit v1.2.3 From dad6a09f3148257ac1773cd90934d721d68ab595 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Mon, 29 Jan 2024 15:56:36 -0800 Subject: hrtimer: Report offline hrtimer enqueue The hrtimers migration on CPU-down hotplug process has been moved earlier, before the CPU actually goes to die. This leaves a small window of opportunity to queue an hrtimer in a blind spot, leaving it ignored. For example a practical case has been reported with RCU waking up a SCHED_FIFO task right before the CPUHP_AP_IDLE_DEAD stage, queuing that way a sched/rt timer to the local offline CPU. Make sure such situations never go unnoticed and warn when that happens. Fixes: 5c0930ccaad5 ("hrtimers: Push pending hrtimers away from outgoing CPU earlier") Reported-by: Paul E. McKenney Signed-off-by: Frederic Weisbecker Signed-off-by: Paul E. McKenney Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240129235646.3171983-4-boqun.feng@gmail.com --- include/linux/hrtimer.h | 4 +++- kernel/time/hrtimer.c | 3 +++ 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 87e3bedf8eb0..641c4567cfa7 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -157,6 +157,7 @@ enum hrtimer_base_type { * @max_hang_time: Maximum time spent in hrtimer_interrupt * @softirq_expiry_lock: Lock which is taken while softirq based hrtimer are * expired + * @online: CPU is online from an hrtimers point of view * @timer_waiters: A hrtimer_cancel() invocation waits for the timer * callback to finish. * @expires_next: absolute time of the next event, is required for remote @@ -179,7 +180,8 @@ struct hrtimer_cpu_base { unsigned int hres_active : 1, in_hrtirq : 1, hang_detected : 1, - softirq_activated : 1; + softirq_activated : 1, + online : 1; #ifdef CONFIG_HIGH_RES_TIMERS unsigned int nr_events; unsigned short nr_retries; diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 760793998cdd..edb0f821dcea 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1085,6 +1085,7 @@ static int enqueue_hrtimer(struct hrtimer *timer, enum hrtimer_mode mode) { debug_activate(timer, mode); + WARN_ON_ONCE(!base->cpu_base->online); base->cpu_base->active_bases |= 1 << base->index; @@ -2183,6 +2184,7 @@ int hrtimers_prepare_cpu(unsigned int cpu) cpu_base->softirq_next_timer = NULL; cpu_base->expires_next = KTIME_MAX; cpu_base->softirq_expires_next = KTIME_MAX; + cpu_base->online = 1; hrtimer_cpu_base_init_expiry_lock(cpu_base); return 0; } @@ -2250,6 +2252,7 @@ int hrtimers_cpu_dying(unsigned int dying_cpu) smp_call_function_single(ncpu, retrigger_next_event, NULL, 0); raw_spin_unlock(&new_base->lock); + old_base->online = 0; raw_spin_unlock(&old_base->lock); return 0; -- cgit v1.2.3 From 5f8408aca66772d3aa9b4831577b2ac5ec41bcd9 Mon Sep 17 00:00:00 2001 From: Grzegorz Trzebiatowski Date: Fri, 26 Jan 2024 13:28:04 +0100 Subject: accel/ivpu: Add job status for jobs aborted by the driver Add DRM_IVPU_JOB_STATUS_ABORTED to indicate that the job was aborted by the driver due to e.g. TDR or user context MMU faults. This will help UMD and tests distinguish if job was aborted by the FW or the driver. Signed-off-by: Grzegorz Trzebiatowski Signed-off-by: Jacek Lawrynowicz Reviewed-by: Jeffrey Hugo Link: https://patchwork.freedesktop.org/patch/msgid/20240126122804.2169129-8-jacek.lawrynowicz@linux.intel.com --- drivers/accel/ivpu/ivpu_job.c | 4 ++-- include/uapi/drm/ivpu_accel.h | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/accel/ivpu/ivpu_job.c b/drivers/accel/ivpu/ivpu_job.c index 0440bee3ecaf..e70cfb859339 100644 --- a/drivers/accel/ivpu/ivpu_job.c +++ b/drivers/accel/ivpu/ivpu_job.c @@ -294,7 +294,7 @@ static int ivpu_job_signal_and_destroy(struct ivpu_device *vdev, u32 job_id, u32 return -ENOENT; if (job->file_priv->has_mmu_faults) - job_status = VPU_JSM_STATUS_ABORTED; + job_status = DRM_IVPU_JOB_STATUS_ABORTED; job->bos[CMD_BUF_IDX]->job_status = job_status; dma_fence_signal(job->done_fence); @@ -315,7 +315,7 @@ void ivpu_jobs_abort_all(struct ivpu_device *vdev) unsigned long id; xa_for_each(&vdev->submitted_jobs_xa, id, job) - ivpu_job_signal_and_destroy(vdev, id, VPU_JSM_STATUS_ABORTED); + ivpu_job_signal_and_destroy(vdev, id, DRM_IVPU_JOB_STATUS_ABORTED); } static int ivpu_job_submit(struct ivpu_job *job) diff --git a/include/uapi/drm/ivpu_accel.h b/include/uapi/drm/ivpu_accel.h index 63c49318a863..19a13468eca5 100644 --- a/include/uapi/drm/ivpu_accel.h +++ b/include/uapi/drm/ivpu_accel.h @@ -305,6 +305,7 @@ struct drm_ivpu_submit { /* drm_ivpu_bo_wait job status codes */ #define DRM_IVPU_JOB_STATUS_SUCCESS 0 +#define DRM_IVPU_JOB_STATUS_ABORTED 256 /** * struct drm_ivpu_bo_wait - Wait for BO to become inactive -- cgit v1.2.3 From 3ee07964d407411fd578a3bc998de44fd64d266a Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Thu, 1 Feb 2024 11:55:56 +0100 Subject: serial: core: introduce uart_port_tx_flags() And an enum with a flag: UART_TX_NOSTOP. To NOT call __port->ops->stop_tx() when the circular buffer is empty. mxs-uart needs this (see the next patch). Signed-off-by: "Jiri Slaby (SUSE)" Cc: stable Tested-by: Emil Kronborg Link: https://lore.kernel.org/r/20240201105557.28043-1-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 32 +++++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 536b2581d3e2..55b1f3ba48ac 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -748,8 +748,17 @@ struct uart_driver { void uart_write_wakeup(struct uart_port *port); -#define __uart_port_tx(uport, ch, tx_ready, put_char, tx_done, for_test, \ - for_post) \ +/** + * enum UART_TX_FLAGS -- flags for uart_port_tx_flags() + * + * @UART_TX_NOSTOP: don't call port->ops->stop_tx() on empty buffer + */ +enum UART_TX_FLAGS { + UART_TX_NOSTOP = BIT(0), +}; + +#define __uart_port_tx(uport, ch, flags, tx_ready, put_char, tx_done, \ + for_test, for_post) \ ({ \ struct uart_port *__port = (uport); \ struct circ_buf *xmit = &__port->state->xmit; \ @@ -777,7 +786,7 @@ void uart_write_wakeup(struct uart_port *port); if (pending < WAKEUP_CHARS) { \ uart_write_wakeup(__port); \ \ - if (pending == 0) \ + if (!((flags) & UART_TX_NOSTOP) && pending == 0) \ __port->ops->stop_tx(__port); \ } \ \ @@ -812,7 +821,7 @@ void uart_write_wakeup(struct uart_port *port); */ #define uart_port_tx_limited(port, ch, count, tx_ready, put_char, tx_done) ({ \ unsigned int __count = (count); \ - __uart_port_tx(port, ch, tx_ready, put_char, tx_done, __count, \ + __uart_port_tx(port, ch, 0, tx_ready, put_char, tx_done, __count, \ __count--); \ }) @@ -826,8 +835,21 @@ void uart_write_wakeup(struct uart_port *port); * See uart_port_tx_limited() for more details. */ #define uart_port_tx(port, ch, tx_ready, put_char) \ - __uart_port_tx(port, ch, tx_ready, put_char, ({}), true, ({})) + __uart_port_tx(port, ch, 0, tx_ready, put_char, ({}), true, ({})) + +/** + * uart_port_tx_flags -- transmit helper for uart_port with flags + * @port: uart port + * @ch: variable to store a character to be written to the HW + * @flags: %UART_TX_NOSTOP or similar + * @tx_ready: can HW accept more data function + * @put_char: function to write a character + * + * See uart_port_tx_limited() for more details. + */ +#define uart_port_tx_flags(port, ch, flags, tx_ready, put_char) \ + __uart_port_tx(port, ch, flags, tx_ready, put_char, ({}), true, ({})) /* * Baud rate helpers. */ -- cgit v1.2.3 From 853b8d7597eea4ccaaefbcf0942cd42fc86d542a Mon Sep 17 00:00:00 2001 From: Amir Goldstein Date: Fri, 2 Feb 2024 12:22:58 +0200 Subject: remap_range: merge do_clone_file_range() into vfs_clone_file_range() commit dfad37051ade ("remap_range: move permission hooks out of do_clone_file_range()") moved the permission hooks from do_clone_file_range() out to its caller vfs_clone_file_range(), but left all the fast sanity checks in do_clone_file_range(). This makes the expensive security hooks be called in situations that they would not have been called before (e.g. fs does not support clone). The only reason for the do_clone_file_range() helper was that overlayfs did not use to be able to call vfs_clone_file_range() from copy up context with sb_writers lock held. However, since commit c63e56a4a652 ("ovl: do not open/llseek lower file with upper sb_writers held"), overlayfs just uses an open coded version of vfs_clone_file_range(). Merge_clone_file_range() into vfs_clone_file_range(), restoring the original order of checks as it was before the regressing commit and adapt the overlayfs code to call vfs_clone_file_range() before the permission hooks that were added by commit ca7ab482401c ("ovl: add permission hooks outside of do_splice_direct()"). Note that in the merge of do_clone_file_range(), the file_start_write() context was reduced to cover ->remap_file_range() without holding it over the permission hooks, which was the reason for doing the regressing commit in the first place. Reported-and-tested-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202401312229.eddeb9a6-oliver.sang@intel.com Fixes: dfad37051ade ("remap_range: move permission hooks out of do_clone_file_range()") Signed-off-by: Amir Goldstein Link: https://lore.kernel.org/r/20240202102258.1582671-1-amir73il@gmail.com Reviewed-by: Jan Kara Signed-off-by: Christian Brauner --- fs/overlayfs/copy_up.c | 14 ++++++-------- fs/remap_range.c | 31 +++++++++---------------------- include/linux/fs.h | 3 --- 3 files changed, 15 insertions(+), 33 deletions(-) (limited to 'include') diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index b8e25ca51016..8586e2f5d243 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -265,20 +265,18 @@ static int ovl_copy_up_file(struct ovl_fs *ofs, struct dentry *dentry, if (IS_ERR(old_file)) return PTR_ERR(old_file); + /* Try to use clone_file_range to clone up within the same fs */ + cloned = vfs_clone_file_range(old_file, 0, new_file, 0, len, 0); + if (cloned == len) + goto out_fput; + + /* Couldn't clone, so now we try to copy the data */ error = rw_verify_area(READ, old_file, &old_pos, len); if (!error) error = rw_verify_area(WRITE, new_file, &new_pos, len); if (error) goto out_fput; - /* Try to use clone_file_range to clone up within the same fs */ - ovl_start_write(dentry); - cloned = do_clone_file_range(old_file, 0, new_file, 0, len, 0); - ovl_end_write(dentry); - if (cloned == len) - goto out_fput; - /* Couldn't clone, so now we try to copy the data */ - /* Check if lower fs supports seek operation */ if (old_file->f_mode & FMODE_LSEEK) skip_hole = true; diff --git a/fs/remap_range.c b/fs/remap_range.c index f8c1120b8311..de07f978ce3e 100644 --- a/fs/remap_range.c +++ b/fs/remap_range.c @@ -373,9 +373,9 @@ int generic_remap_file_range_prep(struct file *file_in, loff_t pos_in, } EXPORT_SYMBOL(generic_remap_file_range_prep); -loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, - struct file *file_out, loff_t pos_out, - loff_t len, unsigned int remap_flags) +loff_t vfs_clone_file_range(struct file *file_in, loff_t pos_in, + struct file *file_out, loff_t pos_out, + loff_t len, unsigned int remap_flags) { loff_t ret; @@ -391,23 +391,6 @@ loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, if (!file_in->f_op->remap_file_range) return -EOPNOTSUPP; - ret = file_in->f_op->remap_file_range(file_in, pos_in, - file_out, pos_out, len, remap_flags); - if (ret < 0) - return ret; - - fsnotify_access(file_in); - fsnotify_modify(file_out); - return ret; -} -EXPORT_SYMBOL(do_clone_file_range); - -loff_t vfs_clone_file_range(struct file *file_in, loff_t pos_in, - struct file *file_out, loff_t pos_out, - loff_t len, unsigned int remap_flags) -{ - loff_t ret; - ret = remap_verify_area(file_in, pos_in, len, false); if (ret) return ret; @@ -417,10 +400,14 @@ loff_t vfs_clone_file_range(struct file *file_in, loff_t pos_in, return ret; file_start_write(file_out); - ret = do_clone_file_range(file_in, pos_in, file_out, pos_out, len, - remap_flags); + ret = file_in->f_op->remap_file_range(file_in, pos_in, + file_out, pos_out, len, remap_flags); file_end_write(file_out); + if (ret < 0) + return ret; + fsnotify_access(file_in); + fsnotify_modify(file_out); return ret; } EXPORT_SYMBOL(vfs_clone_file_range); diff --git a/include/linux/fs.h b/include/linux/fs.h index ed5966a70495..023f37c60709 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2101,9 +2101,6 @@ int __generic_remap_file_range_prep(struct file *file_in, loff_t pos_in, int generic_remap_file_range_prep(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, loff_t *count, unsigned int remap_flags); -extern loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, - struct file *file_out, loff_t pos_out, - loff_t len, unsigned int remap_flags); extern loff_t vfs_clone_file_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, loff_t len, unsigned int remap_flags); -- cgit v1.2.3 From f814bdda774c183b0cc15ec8f3b6e7c6f4527ba5 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 23 Jan 2024 18:58:26 +0100 Subject: blk-wbt: Fix detection of dirty-throttled tasks The detection of dirty-throttled tasks in blk-wbt has been subtly broken since its beginning in 2016. Namely if we are doing cgroup writeback and the throttled task is not in the root cgroup, balance_dirty_pages() will set dirty_sleep for the non-root bdi_writeback structure. However blk-wbt checks dirty_sleep only in the root cgroup bdi_writeback structure. Thus detection of recently throttled tasks is not working in this case (we noticed this when we switched to cgroup v2 and suddently writeback was slow). Since blk-wbt has no easy way to get to proper bdi_writeback and furthermore its intention has always been to work on the whole device rather than on individual cgroups, just move the dirty_sleep timestamp from bdi_writeback to backing_dev_info. That fixes the checking for recently throttled task and saves memory for everybody as a bonus. CC: stable@vger.kernel.org Fixes: b57d74aff9ab ("writeback: track if we're sleeping on progress in balance_dirty_pages()") Signed-off-by: Jan Kara Link: https://lore.kernel.org/r/20240123175826.21452-1-jack@suse.cz [axboe: fixup indentation errors] Signed-off-by: Jens Axboe --- block/blk-wbt.c | 4 ++-- include/linux/backing-dev-defs.h | 7 +++++-- mm/backing-dev.c | 2 +- mm/page-writeback.c | 2 +- 4 files changed, 9 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/block/blk-wbt.c b/block/blk-wbt.c index 5ba3cd574eac..0c0e270a8265 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -163,9 +163,9 @@ static void wb_timestamp(struct rq_wb *rwb, unsigned long *var) */ static bool wb_recent_wait(struct rq_wb *rwb) { - struct bdi_writeback *wb = &rwb->rqos.disk->bdi->wb; + struct backing_dev_info *bdi = rwb->rqos.disk->bdi; - return time_before(jiffies, wb->dirty_sleep + HZ); + return time_before(jiffies, bdi->last_bdp_sleep + HZ); } static inline struct rq_wait *get_rq_wait(struct rq_wb *rwb, diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h index ae12696ec492..2ad261082bba 100644 --- a/include/linux/backing-dev-defs.h +++ b/include/linux/backing-dev-defs.h @@ -141,8 +141,6 @@ struct bdi_writeback { struct delayed_work dwork; /* work item used for writeback */ struct delayed_work bw_dwork; /* work item used for bandwidth estimate */ - unsigned long dirty_sleep; /* last wait */ - struct list_head bdi_node; /* anchored at bdi->wb_list */ #ifdef CONFIG_CGROUP_WRITEBACK @@ -179,6 +177,11 @@ struct backing_dev_info { * any dirty wbs, which is depended upon by bdi_has_dirty(). */ atomic_long_t tot_write_bandwidth; + /* + * Jiffies when last process was dirty throttled on this bdi. Used by + * blk-wbt. + */ + unsigned long last_bdp_sleep; struct bdi_writeback wb; /* the root writeback info for this bdi */ struct list_head wb_list; /* list of all wbs */ diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 1e3447bccdb1..e039d05304dd 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -436,7 +436,6 @@ static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, INIT_LIST_HEAD(&wb->work_list); INIT_DELAYED_WORK(&wb->dwork, wb_workfn); INIT_DELAYED_WORK(&wb->bw_dwork, wb_update_bandwidth_workfn); - wb->dirty_sleep = jiffies; err = fprop_local_init_percpu(&wb->completions, gfp); if (err) @@ -921,6 +920,7 @@ int bdi_init(struct backing_dev_info *bdi) INIT_LIST_HEAD(&bdi->bdi_list); INIT_LIST_HEAD(&bdi->wb_list); init_waitqueue_head(&bdi->wb_waitq); + bdi->last_bdp_sleep = jiffies; return cgwb_bdi_init(bdi); } diff --git a/mm/page-writeback.c b/mm/page-writeback.c index cd4e4ae77c40..cc37fa7f3364 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1921,7 +1921,7 @@ pause: break; } __set_current_state(TASK_KILLABLE); - wb->dirty_sleep = now; + bdi->last_bdp_sleep = jiffies; io_schedule_timeout(pause); current->dirty_paused_when = now + pause; -- cgit v1.2.3 From cd7d469c25704d414d71bf3644f163fb74e7996b Mon Sep 17 00:00:00 2001 From: Xiubo Li Date: Fri, 13 Oct 2023 13:55:44 +0800 Subject: libceph: fail sparse-read if the data length doesn't match Once this happens that means there have bugs. Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov --- include/linux/ceph/osd_client.h | 3 ++- net/ceph/osd_client.c | 18 +++++++++++++++--- 2 files changed, 17 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index fa018d5864e7..f66f6aac74f6 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -45,6 +45,7 @@ enum ceph_sparse_read_state { CEPH_SPARSE_READ_HDR = 0, CEPH_SPARSE_READ_EXTENTS, CEPH_SPARSE_READ_DATA_LEN, + CEPH_SPARSE_READ_DATA_PRE, CEPH_SPARSE_READ_DATA, }; @@ -64,7 +65,7 @@ struct ceph_sparse_read { u64 sr_req_len; /* orig request length */ u64 sr_pos; /* current pos in buffer */ int sr_index; /* current extent index */ - __le32 sr_datalen; /* length of actual data */ + u32 sr_datalen; /* length of actual data */ u32 sr_count; /* extent count in reply */ int sr_ext_len; /* length of extent array */ struct ceph_sparse_extent *sr_extent; /* extent array */ diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 625622016f57..2cea35e4ff8e 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -5857,8 +5857,8 @@ static int osd_sparse_read(struct ceph_connection *con, struct ceph_osd *o = con->private; struct ceph_sparse_read *sr = &o->o_sparse_read; u32 count = sr->sr_count; - u64 eoff, elen; - int ret; + u64 eoff, elen, len = 0; + int i, ret; switch (sr->sr_state) { case CEPH_SPARSE_READ_HDR: @@ -5903,8 +5903,20 @@ next_op: convert_extent_map(sr); ret = sizeof(sr->sr_datalen); *pbuf = (char *)&sr->sr_datalen; - sr->sr_state = CEPH_SPARSE_READ_DATA; + sr->sr_state = CEPH_SPARSE_READ_DATA_PRE; break; + case CEPH_SPARSE_READ_DATA_PRE: + /* Convert sr_datalen to host-endian */ + sr->sr_datalen = le32_to_cpu((__force __le32)sr->sr_datalen); + for (i = 0; i < count; i++) + len += sr->sr_extent[i].len; + if (sr->sr_datalen != len) { + pr_warn_ratelimited("data len %u != extent len %llu\n", + sr->sr_datalen, len); + return -EREMOTEIO; + } + sr->sr_state = CEPH_SPARSE_READ_DATA; + fallthrough; case CEPH_SPARSE_READ_DATA: if (sr->sr_index >= count) { sr->sr_state = CEPH_SPARSE_READ_HDR; -- cgit v1.2.3 From 8e46a2d068c92a905d01cbb018b00d66991585ab Mon Sep 17 00:00:00 2001 From: Xiubo Li Date: Thu, 14 Dec 2023 16:01:03 +0800 Subject: libceph: just wait for more data to be available on the socket A short read may occur while reading the message footer from the socket. Later, when the socket is ready for another read, the messenger invokes all read_partial_*() handlers, including read_partial_sparse_msg_data(). The expectation is that read_partial_sparse_msg_data() would bail, allowing the messenger to invoke read_partial() for the footer and pick up where it left off. However read_partial_sparse_msg_data() violates that and ends up calling into the state machine in the OSD client. The sparse-read state machine assumes that it's a new op and interprets some piece of the footer as the sparse-read header and returns bogus extents/data length, etc. To determine whether read_partial_sparse_msg_data() should bail, let's reuse cursor->total_resid. Because once it reaches to zero that means all the extents and data have been successfully received in last read, else it could break out when partially reading any of the extents and data. And then osd_sparse_read() could continue where it left off. [ idryomov: changelog ] Link: https://tracker.ceph.com/issues/63586 Fixes: d396f89db39a ("libceph: add sparse read support to msgr1") Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov --- include/linux/ceph/messenger.h | 2 +- net/ceph/messenger_v1.c | 25 +++++++++++++------------ net/ceph/messenger_v2.c | 4 ++-- net/ceph/osd_client.c | 9 +++------ 4 files changed, 19 insertions(+), 21 deletions(-) (limited to 'include') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 2eaaabbe98cb..1717cc57cdac 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -283,7 +283,7 @@ struct ceph_msg { struct kref kref; bool more_to_follow; bool needs_out_seq; - bool sparse_read; + u64 sparse_read_total; int front_alloc_len; struct ceph_msgpool *pool; diff --git a/net/ceph/messenger_v1.c b/net/ceph/messenger_v1.c index 4cb60bacf5f5..0cb61c76b9b8 100644 --- a/net/ceph/messenger_v1.c +++ b/net/ceph/messenger_v1.c @@ -160,8 +160,9 @@ static size_t sizeof_footer(struct ceph_connection *con) static void prepare_message_data(struct ceph_msg *msg, u32 data_len) { /* Initialize data cursor if it's not a sparse read */ - if (!msg->sparse_read) - ceph_msg_data_cursor_init(&msg->cursor, msg, data_len); + u64 len = msg->sparse_read_total ? : data_len; + + ceph_msg_data_cursor_init(&msg->cursor, msg, len); } /* @@ -1036,7 +1037,7 @@ static int read_partial_sparse_msg_data(struct ceph_connection *con) if (do_datacrc) crc = con->in_data_crc; - do { + while (cursor->total_resid) { if (con->v1.in_sr_kvec.iov_base) ret = read_partial_message_chunk(con, &con->v1.in_sr_kvec, @@ -1044,23 +1045,23 @@ static int read_partial_sparse_msg_data(struct ceph_connection *con) &crc); else if (cursor->sr_resid > 0) ret = read_partial_sparse_msg_extent(con, &crc); - - if (ret <= 0) { - if (do_datacrc) - con->in_data_crc = crc; - return ret; - } + if (ret <= 0) + break; memset(&con->v1.in_sr_kvec, 0, sizeof(con->v1.in_sr_kvec)); ret = con->ops->sparse_read(con, cursor, (char **)&con->v1.in_sr_kvec.iov_base); + if (ret <= 0) { + ret = ret ? ret : 1; /* must return > 0 to indicate success */ + break; + } con->v1.in_sr_len = ret; - } while (ret > 0); + } if (do_datacrc) con->in_data_crc = crc; - return ret < 0 ? ret : 1; /* must return > 0 to indicate success */ + return ret; } static int read_partial_msg_data(struct ceph_connection *con) @@ -1253,7 +1254,7 @@ static int read_partial_message(struct ceph_connection *con) if (!m->num_data_items) return -EIO; - if (m->sparse_read) + if (m->sparse_read_total) ret = read_partial_sparse_msg_data(con); else if (ceph_test_opt(from_msgr(con->msgr), RXBOUNCE)) ret = read_partial_msg_data_bounce(con); diff --git a/net/ceph/messenger_v2.c b/net/ceph/messenger_v2.c index f8ec60e1aba3..a0ca5414b333 100644 --- a/net/ceph/messenger_v2.c +++ b/net/ceph/messenger_v2.c @@ -1128,7 +1128,7 @@ static int decrypt_tail(struct ceph_connection *con) struct sg_table enc_sgt = {}; struct sg_table sgt = {}; struct page **pages = NULL; - bool sparse = con->in_msg->sparse_read; + bool sparse = !!con->in_msg->sparse_read_total; int dpos = 0; int tail_len; int ret; @@ -2060,7 +2060,7 @@ static int prepare_read_tail_plain(struct ceph_connection *con) } if (data_len(msg)) { - if (msg->sparse_read) + if (msg->sparse_read_total) con->v2.in_state = IN_S_PREPARE_SPARSE_DATA; else con->v2.in_state = IN_S_PREPARE_READ_DATA; diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 2cea35e4ff8e..9d078b37fe0b 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -5510,7 +5510,7 @@ static struct ceph_msg *get_reply(struct ceph_connection *con, } m = ceph_msg_get(req->r_reply); - m->sparse_read = (bool)srlen; + m->sparse_read_total = srlen; dout("get_reply tid %lld %p\n", tid, m); @@ -5777,11 +5777,8 @@ static int prep_next_sparse_read(struct ceph_connection *con, } if (o->o_sparse_op_idx < 0) { - u64 srlen = sparse_data_requested(req); - - dout("%s: [%d] starting new sparse read req. srlen=0x%llx\n", - __func__, o->o_osd, srlen); - ceph_msg_data_cursor_init(cursor, con->in_msg, srlen); + dout("%s: [%d] starting new sparse read req\n", + __func__, o->o_osd); } else { u64 end; -- cgit v1.2.3 From 292781c3c5485ce33bd22b2ef1b2bed709b4d672 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Thu, 1 Feb 2024 23:33:29 +0100 Subject: netfilter: nft_compat: reject unused compat flag Flag (1 << 0) is ignored is set, never used, reject it it with EINVAL instead. Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables") Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/nf_tables.h | 2 ++ net/netfilter/nft_compat.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index ca30232b7bc8..117c6a9b845b 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -285,9 +285,11 @@ enum nft_rule_attributes { /** * enum nft_rule_compat_flags - nf_tables rule compat flags * + * @NFT_RULE_COMPAT_F_UNUSED: unused * @NFT_RULE_COMPAT_F_INV: invert the check result */ enum nft_rule_compat_flags { + NFT_RULE_COMPAT_F_UNUSED = (1 << 0), NFT_RULE_COMPAT_F_INV = (1 << 1), NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV, }; diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c index 001b6841a4b6..ed71d5ecbe0a 100644 --- a/net/netfilter/nft_compat.c +++ b/net/netfilter/nft_compat.c @@ -212,7 +212,8 @@ static int nft_parse_compat(const struct nlattr *attr, u16 *proto, bool *inv) return -EINVAL; flags = ntohl(nla_get_be32(tb[NFTA_RULE_COMPAT_FLAGS])); - if (flags & ~NFT_RULE_COMPAT_F_MASK) + if (flags & NFT_RULE_COMPAT_F_UNUSED || + flags & ~NFT_RULE_COMPAT_F_MASK) return -EINVAL; if (flags & NFT_RULE_COMPAT_F_INV) *inv = true; -- cgit v1.2.3 From 7395dfacfff65e9938ac0889dafa1ab01e987d15 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 6 Feb 2024 00:11:40 +0100 Subject: netfilter: nf_tables: use timestamp to check for set element timeout Add a timestamp field at the beginning of the transaction, store it in the nftables per-netns area. Update set backend .insert, .deactivate and sync gc path to use the timestamp, this avoids that an element expires while control plane transaction is still unfinished. .lookup and .update, which are used from packet path, still use the current time to check if the element has expired. And .get path and dump also since this runs lockless under rcu read size lock. Then, there is async gc which also needs to check the current time since it runs asynchronously from a workqueue. Fixes: c3e1b005ed1c ("netfilter: nf_tables: add set element timeout support") Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/nf_tables.h | 16 ++++++++++++++-- net/netfilter/nf_tables_api.c | 4 +++- net/netfilter/nft_set_hash.c | 8 +++++++- net/netfilter/nft_set_pipapo.c | 18 +++++++++++------- net/netfilter/nft_set_rbtree.c | 11 +++++++---- 5 files changed, 42 insertions(+), 15 deletions(-) (limited to 'include') diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 001226c34621..510244cc0f8f 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -808,10 +808,16 @@ static inline struct nft_set_elem_expr *nft_set_ext_expr(const struct nft_set_ex return nft_set_ext(ext, NFT_SET_EXT_EXPRESSIONS); } -static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) +static inline bool __nft_set_elem_expired(const struct nft_set_ext *ext, + u64 tstamp) { return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && - time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); + time_after_eq64(tstamp, *nft_set_ext_expiration(ext)); +} + +static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) +{ + return __nft_set_elem_expired(ext, get_jiffies_64()); } static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, @@ -1779,6 +1785,7 @@ struct nftables_pernet { struct list_head notify_list; struct mutex commit_mutex; u64 table_handle; + u64 tstamp; unsigned int base_seq; unsigned int gc_seq; u8 validate_state; @@ -1791,6 +1798,11 @@ static inline struct nftables_pernet *nft_pernet(const struct net *net) return net_generic(net, nf_tables_net_id); } +static inline u64 nft_net_tstamp(const struct net *net) +{ + return nft_pernet(net)->tstamp; +} + #define __NFT_REDUCE_READONLY 1UL #define NFT_REDUCE_READONLY (void *)__NFT_REDUCE_READONLY diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index fc016befb46f..f8e3f70c35bd 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -9827,6 +9827,7 @@ dead_elem: struct nft_trans_gc *nft_trans_gc_catchall_sync(struct nft_trans_gc *gc) { struct nft_set_elem_catchall *catchall, *next; + u64 tstamp = nft_net_tstamp(gc->net); const struct nft_set *set = gc->set; struct nft_elem_priv *elem_priv; struct nft_set_ext *ext; @@ -9836,7 +9837,7 @@ struct nft_trans_gc *nft_trans_gc_catchall_sync(struct nft_trans_gc *gc) list_for_each_entry_safe(catchall, next, &set->catchall_list, list) { ext = nft_set_elem_ext(set, catchall->elem); - if (!nft_set_elem_expired(ext)) + if (!__nft_set_elem_expired(ext, tstamp)) continue; gc = nft_trans_gc_queue_sync(gc, GFP_KERNEL); @@ -10622,6 +10623,7 @@ static bool nf_tables_valid_genid(struct net *net, u32 genid) bool genid_ok; mutex_lock(&nft_net->commit_mutex); + nft_net->tstamp = get_jiffies_64(); genid_ok = genid == 0 || nft_net->base_seq == genid; if (!genid_ok) diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c index 6c2061bfdae6..6968a3b34236 100644 --- a/net/netfilter/nft_set_hash.c +++ b/net/netfilter/nft_set_hash.c @@ -36,6 +36,7 @@ struct nft_rhash_cmp_arg { const struct nft_set *set; const u32 *key; u8 genmask; + u64 tstamp; }; static inline u32 nft_rhash_key(const void *data, u32 len, u32 seed) @@ -62,7 +63,7 @@ static inline int nft_rhash_cmp(struct rhashtable_compare_arg *arg, return 1; if (nft_set_elem_is_dead(&he->ext)) return 1; - if (nft_set_elem_expired(&he->ext)) + if (__nft_set_elem_expired(&he->ext, x->tstamp)) return 1; if (!nft_set_elem_active(&he->ext, x->genmask)) return 1; @@ -87,6 +88,7 @@ bool nft_rhash_lookup(const struct net *net, const struct nft_set *set, .genmask = nft_genmask_cur(net), .set = set, .key = key, + .tstamp = get_jiffies_64(), }; he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); @@ -106,6 +108,7 @@ nft_rhash_get(const struct net *net, const struct nft_set *set, .genmask = nft_genmask_cur(net), .set = set, .key = elem->key.val.data, + .tstamp = get_jiffies_64(), }; he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); @@ -131,6 +134,7 @@ static bool nft_rhash_update(struct nft_set *set, const u32 *key, .genmask = NFT_GENMASK_ANY, .set = set, .key = key, + .tstamp = get_jiffies_64(), }; he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); @@ -175,6 +179,7 @@ static int nft_rhash_insert(const struct net *net, const struct nft_set *set, .genmask = nft_genmask_next(net), .set = set, .key = elem->key.val.data, + .tstamp = nft_net_tstamp(net), }; struct nft_rhash_elem *prev; @@ -216,6 +221,7 @@ nft_rhash_deactivate(const struct net *net, const struct nft_set *set, .genmask = nft_genmask_next(net), .set = set, .key = elem->key.val.data, + .tstamp = nft_net_tstamp(net), }; rcu_read_lock(); diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c index f24ecdaa1c1e..b17c18203416 100644 --- a/net/netfilter/nft_set_pipapo.c +++ b/net/netfilter/nft_set_pipapo.c @@ -504,6 +504,7 @@ out: * @set: nftables API set representation * @data: Key data to be matched against existing elements * @genmask: If set, check that element is active in given genmask + * @tstamp: timestamp to check for expired elements * * This is essentially the same as the lookup function, except that it matches * key data against the uncommitted copy and doesn't use preallocated maps for @@ -513,7 +514,8 @@ out: */ static struct nft_pipapo_elem *pipapo_get(const struct net *net, const struct nft_set *set, - const u8 *data, u8 genmask) + const u8 *data, u8 genmask, + u64 tstamp) { struct nft_pipapo_elem *ret = ERR_PTR(-ENOENT); struct nft_pipapo *priv = nft_set_priv(set); @@ -566,7 +568,7 @@ next_match: goto out; if (last) { - if (nft_set_elem_expired(&f->mt[b].e->ext)) + if (__nft_set_elem_expired(&f->mt[b].e->ext, tstamp)) goto next_match; if ((genmask && !nft_set_elem_active(&f->mt[b].e->ext, genmask))) @@ -606,7 +608,7 @@ nft_pipapo_get(const struct net *net, const struct nft_set *set, struct nft_pipapo_elem *e; e = pipapo_get(net, set, (const u8 *)elem->key.val.data, - nft_genmask_cur(net)); + nft_genmask_cur(net), get_jiffies_64()); if (IS_ERR(e)) return ERR_CAST(e); @@ -1173,6 +1175,7 @@ static int nft_pipapo_insert(const struct net *net, const struct nft_set *set, struct nft_pipapo_match *m = priv->clone; u8 genmask = nft_genmask_next(net); struct nft_pipapo_elem *e, *dup; + u64 tstamp = nft_net_tstamp(net); struct nft_pipapo_field *f; const u8 *start_p, *end_p; int i, bsize_max, err = 0; @@ -1182,7 +1185,7 @@ static int nft_pipapo_insert(const struct net *net, const struct nft_set *set, else end = start; - dup = pipapo_get(net, set, start, genmask); + dup = pipapo_get(net, set, start, genmask, tstamp); if (!IS_ERR(dup)) { /* Check if we already have the same exact entry */ const struct nft_data *dup_key, *dup_end; @@ -1204,7 +1207,7 @@ static int nft_pipapo_insert(const struct net *net, const struct nft_set *set, if (PTR_ERR(dup) == -ENOENT) { /* Look for partially overlapping entries */ - dup = pipapo_get(net, set, end, nft_genmask_next(net)); + dup = pipapo_get(net, set, end, nft_genmask_next(net), tstamp); } if (PTR_ERR(dup) != -ENOENT) { @@ -1560,6 +1563,7 @@ static void pipapo_gc(struct nft_set *set, struct nft_pipapo_match *m) { struct nft_pipapo *priv = nft_set_priv(set); struct net *net = read_pnet(&set->net); + u64 tstamp = nft_net_tstamp(net); int rules_f0, first_rule = 0; struct nft_pipapo_elem *e; struct nft_trans_gc *gc; @@ -1594,7 +1598,7 @@ static void pipapo_gc(struct nft_set *set, struct nft_pipapo_match *m) /* synchronous gc never fails, there is no need to set on * NFT_SET_ELEM_DEAD_BIT. */ - if (nft_set_elem_expired(&e->ext)) { + if (__nft_set_elem_expired(&e->ext, tstamp)) { priv->dirty = true; gc = nft_trans_gc_queue_sync(gc, GFP_KERNEL); @@ -1769,7 +1773,7 @@ static void *pipapo_deactivate(const struct net *net, const struct nft_set *set, { struct nft_pipapo_elem *e; - e = pipapo_get(net, set, data, nft_genmask_next(net)); + e = pipapo_get(net, set, data, nft_genmask_next(net), nft_net_tstamp(net)); if (IS_ERR(e)) return NULL; diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c index baa3fea4fe65..5fd74f993988 100644 --- a/net/netfilter/nft_set_rbtree.c +++ b/net/netfilter/nft_set_rbtree.c @@ -313,6 +313,7 @@ static int __nft_rbtree_insert(const struct net *net, const struct nft_set *set, struct nft_rbtree *priv = nft_set_priv(set); u8 cur_genmask = nft_genmask_cur(net); u8 genmask = nft_genmask_next(net); + u64 tstamp = nft_net_tstamp(net); int d; /* Descend the tree to search for an existing element greater than the @@ -360,7 +361,7 @@ static int __nft_rbtree_insert(const struct net *net, const struct nft_set *set, /* perform garbage collection to avoid bogus overlap reports * but skip new elements in this transaction. */ - if (nft_set_elem_expired(&rbe->ext) && + if (__nft_set_elem_expired(&rbe->ext, tstamp) && nft_set_elem_active(&rbe->ext, cur_genmask)) { const struct nft_rbtree_elem *removed_end; @@ -551,6 +552,7 @@ nft_rbtree_deactivate(const struct net *net, const struct nft_set *set, const struct nft_rbtree *priv = nft_set_priv(set); const struct rb_node *parent = priv->root.rb_node; u8 genmask = nft_genmask_next(net); + u64 tstamp = nft_net_tstamp(net); int d; while (parent != NULL) { @@ -571,7 +573,7 @@ nft_rbtree_deactivate(const struct net *net, const struct nft_set *set, nft_rbtree_interval_end(this)) { parent = parent->rb_right; continue; - } else if (nft_set_elem_expired(&rbe->ext)) { + } else if (__nft_set_elem_expired(&rbe->ext, tstamp)) { break; } else if (!nft_set_elem_active(&rbe->ext, genmask)) { parent = parent->rb_left; @@ -624,9 +626,10 @@ static void nft_rbtree_gc(struct nft_set *set) { struct nft_rbtree *priv = nft_set_priv(set); struct nft_rbtree_elem *rbe, *rbe_end = NULL; + struct net *net = read_pnet(&set->net); + u64 tstamp = nft_net_tstamp(net); struct rb_node *node, *next; struct nft_trans_gc *gc; - struct net *net; set = nft_set_container_of(priv); net = read_pnet(&set->net); @@ -648,7 +651,7 @@ static void nft_rbtree_gc(struct nft_set *set) rbe_end = rbe; continue; } - if (!nft_set_elem_expired(&rbe->ext)) + if (!__nft_set_elem_expired(&rbe->ext, tstamp)) continue; gc = nft_trans_gc_queue_sync(gc, GFP_KERNEL); -- cgit v1.2.3 From 7d708c145b2631941b8b0b4a740dc2990818c39c Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 9 Feb 2024 01:24:54 +0000 Subject: Revert "usb: dwc3: Support EBC feature of DWC_usb31" This reverts commit 398aa9a7e77cf23c2a6f882ddd3dcd96f21771dc. The update to the gadget API to support EBC feature is incomplete. It's missing at least the following: * New usage documentation * Gadget capability check * Condition for the user to check how many and which endpoints can be used as "fifo_mode" * Description of how it can affect completed request (e.g. dwc3 won't update TRB on completion -- ie. how it can affect request's actual length report) Let's revert this until it's ready. Fixes: 398aa9a7e77c ("usb: dwc3: Support EBC feature of DWC_usb31") Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/3042f847ff904b4dd4e4cf66a1b9df470e63439e.1707441690.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/core.h | 1 - drivers/usb/dwc3/gadget.c | 6 ------ drivers/usb/dwc3/gadget.h | 2 -- include/linux/usb/gadget.h | 1 - 4 files changed, 10 deletions(-) (limited to 'include') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index e3eea965e57b..e120611a5174 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -376,7 +376,6 @@ /* Global HWPARAMS4 Register */ #define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13) #define DWC3_MAX_HIBER_SCRATCHBUFS 15 -#define DWC3_EXT_BUFF_CONTROL BIT(21) /* Global HWPARAMS6 Register */ #define DWC3_GHWPARAMS6_BCSUPPORT BIT(14) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 564976b3e2b9..4c8dd6724678 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -673,12 +673,6 @@ static int dwc3_gadget_set_ep_config(struct dwc3_ep *dep, unsigned int action) params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(bInterval_m1); } - if (dep->endpoint.fifo_mode) { - if (!(dwc->hwparams.hwparams4 & DWC3_EXT_BUFF_CONTROL)) - return -EINVAL; - params.param1 |= DWC3_DEPCFG_EBC_HWO_NOWB | DWC3_DEPCFG_USE_EBC; - } - return dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_SETEPCONFIG, ¶ms); } diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index fd7a4e94397e..55a56cf67d73 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -26,8 +26,6 @@ struct dwc3; #define DWC3_DEPCFG_XFER_NOT_READY_EN BIT(10) #define DWC3_DEPCFG_FIFO_ERROR_EN BIT(11) #define DWC3_DEPCFG_STREAM_EVENT_EN BIT(13) -#define DWC3_DEPCFG_EBC_HWO_NOWB BIT(14) -#define DWC3_DEPCFG_USE_EBC BIT(15) #define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16) #define DWC3_DEPCFG_STREAM_CAPABLE BIT(24) #define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25) diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index a771ccc038ac..6532beb587b1 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -236,7 +236,6 @@ struct usb_ep { unsigned max_streams:16; unsigned mult:2; unsigned maxburst:5; - unsigned fifo_mode:1; u8 address; const struct usb_endpoint_descriptor *desc; const struct usb_ss_ep_comp_descriptor *comp_desc; -- cgit v1.2.3 From 4356e9f841f7fbb945521cef3577ba394c65f3fc Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 9 Feb 2024 12:39:31 -0800 Subject: work around gcc bugs with 'asm goto' with outputs We've had issues with gcc and 'asm goto' before, and we created a 'asm_volatile_goto()' macro for that in the past: see commits 3f0116c3238a ("compiler/gcc4: Add quirk for 'asm goto' miscompilation bug") and a9f180345f53 ("compiler/gcc4: Make quirk for asm_volatile_goto() unconditional"). Then, much later, we ended up removing the workaround in commit 43c249ea0b1e ("compiler-gcc.h: remove ancient workaround for gcc PR 58670") because we no longer supported building the kernel with the affected gcc versions, but we left the macro uses around. Now, Sean Christopherson reports a new version of a very similar problem, which is fixed by re-applying that ancient workaround. But the problem in question is limited to only the 'asm goto with outputs' cases, so instead of re-introducing the old workaround as-is, let's rename and limit the workaround to just that much less common case. It looks like there are at least two separate issues that all hit in this area: (a) some versions of gcc don't mark the asm goto as 'volatile' when it has outputs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98619 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110420 which is easy to work around by just adding the 'volatile' by hand. (b) Internal compiler errors: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110422 which are worked around by adding the extra empty 'asm' as a barrier, as in the original workaround. but the problem Sean sees may be a third thing since it involves bad code generation (not an ICE) even with the manually added 'volatile'. but the same old workaround works for this case, even if this feels a bit like voodoo programming and may only be hiding the issue. Reported-and-tested-by: Sean Christopherson Link: https://lore.kernel.org/all/20240208220604.140859-1-seanjc@google.com/ Cc: Nick Desaulniers Cc: Uros Bizjak Cc: Jakub Jelinek Cc: Andrew Pinski Signed-off-by: Linus Torvalds --- arch/arc/include/asm/jump_label.h | 4 ++-- arch/arm/include/asm/jump_label.h | 4 ++-- arch/arm64/include/asm/alternative-macros.h | 4 ++-- arch/arm64/include/asm/jump_label.h | 4 ++-- arch/csky/include/asm/jump_label.h | 4 ++-- arch/loongarch/include/asm/jump_label.h | 4 ++-- arch/mips/include/asm/jump_label.h | 4 ++-- arch/parisc/include/asm/jump_label.h | 4 ++-- arch/powerpc/include/asm/jump_label.h | 4 ++-- arch/powerpc/include/asm/uaccess.h | 12 ++++++------ arch/powerpc/kernel/irq_64.c | 2 +- arch/riscv/include/asm/arch_hweight.h | 4 ++-- arch/riscv/include/asm/bitops.h | 8 ++++---- arch/riscv/include/asm/checksum.h | 2 +- arch/riscv/include/asm/cpufeature.h | 4 ++-- arch/riscv/include/asm/jump_label.h | 4 ++-- arch/riscv/lib/csum.c | 10 +++++----- arch/s390/include/asm/jump_label.h | 4 ++-- arch/sparc/include/asm/jump_label.h | 4 ++-- arch/um/include/asm/cpufeature.h | 2 +- arch/x86/include/asm/cpufeature.h | 2 +- arch/x86/include/asm/jump_label.h | 6 +++--- arch/x86/include/asm/rmwcc.h | 2 +- arch/x86/include/asm/special_insns.h | 2 +- arch/x86/include/asm/uaccess.h | 10 +++++----- arch/x86/kvm/svm/svm_ops.h | 6 +++--- arch/x86/kvm/vmx/vmx.c | 4 ++-- arch/x86/kvm/vmx/vmx_ops.h | 6 +++--- arch/xtensa/include/asm/jump_label.h | 4 ++-- include/linux/compiler-gcc.h | 19 +++++++++++++++++++ include/linux/compiler_types.h | 4 ++-- net/netfilter/nft_set_pipapo_avx2.c | 2 +- samples/bpf/asm_goto_workaround.h | 8 ++++---- tools/arch/x86/include/asm/rmwcc.h | 2 +- tools/include/linux/compiler_types.h | 4 ++-- 35 files changed, 96 insertions(+), 77 deletions(-) (limited to 'include') diff --git a/arch/arc/include/asm/jump_label.h b/arch/arc/include/asm/jump_label.h index 9d9618079739..a339223d9e05 100644 --- a/arch/arc/include/asm/jump_label.h +++ b/arch/arc/include/asm/jump_label.h @@ -31,7 +31,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" + asm goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" "1: \n" "nop \n" ".pushsection __jump_table, \"aw\" \n" @@ -47,7 +47,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" + asm goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" "1: \n" "b %l[l_yes] \n" ".pushsection __jump_table, \"aw\" \n" diff --git a/arch/arm/include/asm/jump_label.h b/arch/arm/include/asm/jump_label.h index e12d7d096fc0..e4eb54f6cd9f 100644 --- a/arch/arm/include/asm/jump_label.h +++ b/arch/arm/include/asm/jump_label.h @@ -11,7 +11,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" WASM(nop) "\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" @@ -25,7 +25,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" WASM(b) " %l[l_yes]\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" diff --git a/arch/arm64/include/asm/alternative-macros.h b/arch/arm64/include/asm/alternative-macros.h index 210bb43cff2c..d328f549b1a6 100644 --- a/arch/arm64/include/asm/alternative-macros.h +++ b/arch/arm64/include/asm/alternative-macros.h @@ -229,7 +229,7 @@ alternative_has_cap_likely(const unsigned long cpucap) if (!cpucap_is_possible(cpucap)) return false; - asm_volatile_goto( + asm goto( ALTERNATIVE_CB("b %l[l_no]", %[cpucap], alt_cb_patch_nops) : : [cpucap] "i" (cpucap) @@ -247,7 +247,7 @@ alternative_has_cap_unlikely(const unsigned long cpucap) if (!cpucap_is_possible(cpucap)) return false; - asm_volatile_goto( + asm goto( ALTERNATIVE("nop", "b %l[l_yes]", %[cpucap]) : : [cpucap] "i" (cpucap) diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h index 48ddc0f45d22..6aafbb789991 100644 --- a/arch/arm64/include/asm/jump_label.h +++ b/arch/arm64/include/asm/jump_label.h @@ -18,7 +18,7 @@ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: nop \n\t" " .pushsection __jump_table, \"aw\" \n\t" " .align 3 \n\t" @@ -35,7 +35,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: b %l[l_yes] \n\t" " .pushsection __jump_table, \"aw\" \n\t" " .align 3 \n\t" diff --git a/arch/csky/include/asm/jump_label.h b/arch/csky/include/asm/jump_label.h index 98a3f4b168bd..ef2e37a10a0f 100644 --- a/arch/csky/include/asm/jump_label.h +++ b/arch/csky/include/asm/jump_label.h @@ -12,7 +12,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto( + asm goto( "1: nop32 \n" " .pushsection __jump_table, \"aw\" \n" " .align 2 \n" @@ -29,7 +29,7 @@ label: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto( + asm goto( "1: bsr32 %l[label] \n" " .pushsection __jump_table, \"aw\" \n" " .align 2 \n" diff --git a/arch/loongarch/include/asm/jump_label.h b/arch/loongarch/include/asm/jump_label.h index 3cea299a5ef5..29acfe3de3fa 100644 --- a/arch/loongarch/include/asm/jump_label.h +++ b/arch/loongarch/include/asm/jump_label.h @@ -22,7 +22,7 @@ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: nop \n\t" JUMP_TABLE_ENTRY : : "i"(&((char *)key)[branch]) : : l_yes); @@ -35,7 +35,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: b %l[l_yes] \n\t" JUMP_TABLE_ENTRY : : "i"(&((char *)key)[branch]) : : l_yes); diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h index 081be98c71ef..ff5d388502d4 100644 --- a/arch/mips/include/asm/jump_label.h +++ b/arch/mips/include/asm/jump_label.h @@ -39,7 +39,7 @@ extern void jump_label_apply_nops(struct module *mod); static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\t" B_INSN " 2f\n\t" + asm goto("1:\t" B_INSN " 2f\n\t" "2:\t.insn\n\t" ".pushsection __jump_table, \"aw\"\n\t" WORD_INSN " 1b, %l[l_yes], %0\n\t" @@ -53,7 +53,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\t" J_INSN " %l[l_yes]\n\t" + asm goto("1:\t" J_INSN " %l[l_yes]\n\t" ".pushsection __jump_table, \"aw\"\n\t" WORD_INSN " 1b, %l[l_yes], %0\n\t" ".popsection\n\t" diff --git a/arch/parisc/include/asm/jump_label.h b/arch/parisc/include/asm/jump_label.h index 94428798b6aa..317ebc5edc9f 100644 --- a/arch/parisc/include/asm/jump_label.h +++ b/arch/parisc/include/asm/jump_label.h @@ -12,7 +12,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".align %1\n\t" @@ -29,7 +29,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "b,n %l[l_yes]\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".align %1\n\t" diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h index 93ce3ec25387..2f2a86ed2280 100644 --- a/arch/powerpc/include/asm/jump_label.h +++ b/arch/powerpc/include/asm/jump_label.h @@ -17,7 +17,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "nop # arch_static_branch\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".long 1b - ., %l[l_yes] - .\n\t" @@ -32,7 +32,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "b %l[l_yes] # arch_static_branch_jump\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".long 1b - ., %l[l_yes] - .\n\t" diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index f1f9890f50d3..de10437fd206 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -74,7 +74,7 @@ __pu_failed: \ /* -mprefixed can generate offsets beyond range, fall back hack */ #ifdef CONFIG_PPC_KERNEL_PREFIXED #define __put_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm goto( \ "1: " op " %0,0(%1) # put_user\n" \ EX_TABLE(1b, %l2) \ : \ @@ -83,7 +83,7 @@ __pu_failed: \ : label) #else #define __put_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm goto( \ "1: " op "%U1%X1 %0,%1 # put_user\n" \ EX_TABLE(1b, %l2) \ : \ @@ -97,7 +97,7 @@ __pu_failed: \ __put_user_asm_goto(x, ptr, label, "std") #else /* __powerpc64__ */ #define __put_user_asm2_goto(x, addr, label) \ - asm_volatile_goto( \ + asm goto( \ "1: stw%X1 %0, %1\n" \ "2: stw%X1 %L0, %L1\n" \ EX_TABLE(1b, %l2) \ @@ -146,7 +146,7 @@ do { \ /* -mprefixed can generate offsets beyond range, fall back hack */ #ifdef CONFIG_PPC_KERNEL_PREFIXED #define __get_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm_goto_output( \ "1: "op" %0,0(%1) # get_user\n" \ EX_TABLE(1b, %l2) \ : "=r" (x) \ @@ -155,7 +155,7 @@ do { \ : label) #else #define __get_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm_goto_output( \ "1: "op"%U1%X1 %0, %1 # get_user\n" \ EX_TABLE(1b, %l2) \ : "=r" (x) \ @@ -169,7 +169,7 @@ do { \ __get_user_asm_goto(x, addr, label, "ld") #else /* __powerpc64__ */ #define __get_user_asm2_goto(x, addr, label) \ - asm_volatile_goto( \ + asm_goto_output( \ "1: lwz%X1 %0, %1\n" \ "2: lwz%X1 %L0, %L1\n" \ EX_TABLE(1b, %l2) \ diff --git a/arch/powerpc/kernel/irq_64.c b/arch/powerpc/kernel/irq_64.c index 938e66829eae..d5c48d1b0a31 100644 --- a/arch/powerpc/kernel/irq_64.c +++ b/arch/powerpc/kernel/irq_64.c @@ -230,7 +230,7 @@ again: * This allows interrupts to be unmasked without hard disabling, and * also without new hard interrupts coming in ahead of pending ones. */ - asm_volatile_goto( + asm goto( "1: \n" " lbz 9,%0(13) \n" " cmpwi 9,0 \n" diff --git a/arch/riscv/include/asm/arch_hweight.h b/arch/riscv/include/asm/arch_hweight.h index c20236a0725b..85b2c443823e 100644 --- a/arch/riscv/include/asm/arch_hweight.h +++ b/arch/riscv/include/asm/arch_hweight.h @@ -20,7 +20,7 @@ static __always_inline unsigned int __arch_hweight32(unsigned int w) { #ifdef CONFIG_RISCV_ISA_ZBB - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -51,7 +51,7 @@ static inline unsigned int __arch_hweight8(unsigned int w) static __always_inline unsigned long __arch_hweight64(__u64 w) { # ifdef CONFIG_RISCV_ISA_ZBB - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); diff --git a/arch/riscv/include/asm/bitops.h b/arch/riscv/include/asm/bitops.h index 9ffc35537024..329d8244a9b3 100644 --- a/arch/riscv/include/asm/bitops.h +++ b/arch/riscv/include/asm/bitops.h @@ -39,7 +39,7 @@ static __always_inline unsigned long variable__ffs(unsigned long word) { int num; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -95,7 +95,7 @@ static __always_inline unsigned long variable__fls(unsigned long word) { int num; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -154,7 +154,7 @@ static __always_inline int variable_ffs(int x) if (!x) return 0; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -209,7 +209,7 @@ static __always_inline int variable_fls(unsigned int x) if (!x) return 0; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); diff --git a/arch/riscv/include/asm/checksum.h b/arch/riscv/include/asm/checksum.h index a5b60b54b101..88e6f1499e88 100644 --- a/arch/riscv/include/asm/checksum.h +++ b/arch/riscv/include/asm/checksum.h @@ -53,7 +53,7 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) IS_ENABLED(CONFIG_RISCV_ALTERNATIVE)) { unsigned long fold_temp; - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : diff --git a/arch/riscv/include/asm/cpufeature.h b/arch/riscv/include/asm/cpufeature.h index 5a626ed2c47a..0bd11862b760 100644 --- a/arch/riscv/include/asm/cpufeature.h +++ b/arch/riscv/include/asm/cpufeature.h @@ -80,7 +80,7 @@ riscv_has_extension_likely(const unsigned long ext) "ext must be < RISCV_ISA_EXT_MAX"); if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE)) { - asm_volatile_goto( + asm goto( ALTERNATIVE("j %l[l_no]", "nop", 0, %[ext], 1) : : [ext] "i" (ext) @@ -103,7 +103,7 @@ riscv_has_extension_unlikely(const unsigned long ext) "ext must be < RISCV_ISA_EXT_MAX"); if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE)) { - asm_volatile_goto( + asm goto( ALTERNATIVE("nop", "j %l[l_yes]", 0, %[ext], 1) : : [ext] "i" (ext) diff --git a/arch/riscv/include/asm/jump_label.h b/arch/riscv/include/asm/jump_label.h index 14a5ea8d8ef0..4a35d787c019 100644 --- a/arch/riscv/include/asm/jump_label.h +++ b/arch/riscv/include/asm/jump_label.h @@ -17,7 +17,7 @@ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( " .align 2 \n\t" " .option push \n\t" " .option norelax \n\t" @@ -39,7 +39,7 @@ label: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( " .align 2 \n\t" " .option push \n\t" " .option norelax \n\t" diff --git a/arch/riscv/lib/csum.c b/arch/riscv/lib/csum.c index af3df5274ccb..74af3ab520b6 100644 --- a/arch/riscv/lib/csum.c +++ b/arch/riscv/lib/csum.c @@ -53,7 +53,7 @@ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, * support, so nop when Zbb is available and jump when Zbb is * not available. */ - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : @@ -170,7 +170,7 @@ do_csum_with_alignment(const unsigned char *buff, int len) * support, so nop when Zbb is available and jump when Zbb is * not available. */ - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : @@ -178,7 +178,7 @@ do_csum_with_alignment(const unsigned char *buff, int len) : no_zbb); #ifdef CONFIG_32BIT - asm_volatile_goto(".option push \n\ + asm_goto_output(".option push \n\ .option arch,+zbb \n\ rori %[fold_temp], %[csum], 16 \n\ andi %[offset], %[offset], 1 \n\ @@ -193,7 +193,7 @@ do_csum_with_alignment(const unsigned char *buff, int len) return (unsigned short)csum; #else /* !CONFIG_32BIT */ - asm_volatile_goto(".option push \n\ + asm_goto_output(".option push \n\ .option arch,+zbb \n\ rori %[fold_temp], %[csum], 32 \n\ add %[csum], %[fold_temp], %[csum] \n\ @@ -257,7 +257,7 @@ do_csum_no_alignment(const unsigned char *buff, int len) * support, so nop when Zbb is available and jump when Zbb is * not available. */ - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h index 895f774bbcc5..bf78cf381dfc 100644 --- a/arch/s390/include/asm/jump_label.h +++ b/arch/s390/include/asm/jump_label.h @@ -25,7 +25,7 @@ */ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("0: brcl 0,%l[label]\n" + asm goto("0: brcl 0,%l[label]\n" ".pushsection __jump_table,\"aw\"\n" ".balign 8\n" ".long 0b-.,%l[label]-.\n" @@ -39,7 +39,7 @@ label: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("0: brcl 15,%l[label]\n" + asm goto("0: brcl 15,%l[label]\n" ".pushsection __jump_table,\"aw\"\n" ".balign 8\n" ".long 0b-.,%l[label]-.\n" diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h index 94eb529dcb77..2718cbea826a 100644 --- a/arch/sparc/include/asm/jump_label.h +++ b/arch/sparc/include/asm/jump_label.h @@ -10,7 +10,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "nop\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" @@ -26,7 +26,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "b %l[l_yes]\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" diff --git a/arch/um/include/asm/cpufeature.h b/arch/um/include/asm/cpufeature.h index 4b6d1b526bc1..66fe06db872f 100644 --- a/arch/um/include/asm/cpufeature.h +++ b/arch/um/include/asm/cpufeature.h @@ -75,7 +75,7 @@ extern void setup_clear_cpu_cap(unsigned int bit); */ static __always_inline bool _static_cpu_has(u16 bit) { - asm_volatile_goto("1: jmp 6f\n" + asm goto("1: jmp 6f\n" "2:\n" ".skip -(((5f-4f) - (2b-1b)) > 0) * " "((5f-4f) - (2b-1b)),0x90\n" diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index a26bebbdff87..a1273698fc43 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -168,7 +168,7 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); */ static __always_inline bool _static_cpu_has(u16 bit) { - asm_volatile_goto( + asm goto( ALTERNATIVE_TERNARY("jmp 6f", %P[feature], "", "jmp %l[t_no]") ".pushsection .altinstr_aux,\"ax\"\n" "6:\n" diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h index 071572e23d3a..cbbef32517f0 100644 --- a/arch/x86/include/asm/jump_label.h +++ b/arch/x86/include/asm/jump_label.h @@ -24,7 +24,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:" + asm goto("1:" "jmp %l[l_yes] # objtool NOPs this \n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (2 | branch) : : l_yes); @@ -38,7 +38,7 @@ l_yes: static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto("1:" + asm goto("1:" ".byte " __stringify(BYTES_NOP5) "\n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (branch) : : l_yes); @@ -52,7 +52,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto("1:" + asm goto("1:" "jmp %l[l_yes]\n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (branch) : : l_yes); diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h index 4b081e0d3306..363266cbcada 100644 --- a/arch/x86/include/asm/rmwcc.h +++ b/arch/x86/include/asm/rmwcc.h @@ -13,7 +13,7 @@ #define __GEN_RMWcc(fullop, _var, cc, clobbers, ...) \ ({ \ bool c = false; \ - asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \ + asm goto (fullop "; j" #cc " %l[cc_label]" \ : : [var] "m" (_var), ## __VA_ARGS__ \ : clobbers : cc_label); \ if (0) { \ diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index d6cd9344f6c7..48f8dd47cf68 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -205,7 +205,7 @@ static inline void clwb(volatile void *__p) #ifdef CONFIG_X86_USER_SHADOW_STACK static inline int write_user_shstk_64(u64 __user *addr, u64 val) { - asm_volatile_goto("1: wrussq %[val], (%[addr])\n" + asm goto("1: wrussq %[val], (%[addr])\n" _ASM_EXTABLE(1b, %l[fail]) :: [addr] "r" (addr), [val] "r" (val) :: fail); diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index 5c367c1290c3..237dc8cdd12b 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -133,7 +133,7 @@ extern int __get_user_bad(void); #ifdef CONFIG_X86_32 #define __put_user_goto_u64(x, addr, label) \ - asm_volatile_goto("\n" \ + asm goto("\n" \ "1: movl %%eax,0(%1)\n" \ "2: movl %%edx,4(%1)\n" \ _ASM_EXTABLE_UA(1b, %l2) \ @@ -295,7 +295,7 @@ do { \ } while (0) #define __get_user_asm(x, addr, itype, ltype, label) \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: mov"itype" %[umem],%[output]\n" \ _ASM_EXTABLE_UA(1b, %l2) \ : [output] ltype(x) \ @@ -375,7 +375,7 @@ do { \ __typeof__(_ptr) _old = (__typeof__(_ptr))(_pold); \ __typeof__(*(_ptr)) __old = *_old; \ __typeof__(*(_ptr)) __new = (_new); \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: " LOCK_PREFIX "cmpxchg"itype" %[new], %[ptr]\n"\ _ASM_EXTABLE_UA(1b, %l[label]) \ : CC_OUT(z) (success), \ @@ -394,7 +394,7 @@ do { \ __typeof__(_ptr) _old = (__typeof__(_ptr))(_pold); \ __typeof__(*(_ptr)) __old = *_old; \ __typeof__(*(_ptr)) __new = (_new); \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: " LOCK_PREFIX "cmpxchg8b %[ptr]\n" \ _ASM_EXTABLE_UA(1b, %l[label]) \ : CC_OUT(z) (success), \ @@ -477,7 +477,7 @@ struct __large_struct { unsigned long buf[100]; }; * aliasing issues. */ #define __put_user_goto(x, addr, itype, ltype, label) \ - asm_volatile_goto("\n" \ + asm goto("\n" \ "1: mov"itype" %0,%1\n" \ _ASM_EXTABLE_UA(1b, %l2) \ : : ltype(x), "m" (__m(addr)) \ diff --git a/arch/x86/kvm/svm/svm_ops.h b/arch/x86/kvm/svm/svm_ops.h index 36c8af87a707..4e725854c63a 100644 --- a/arch/x86/kvm/svm/svm_ops.h +++ b/arch/x86/kvm/svm/svm_ops.h @@ -8,7 +8,7 @@ #define svm_asm(insn, clobber...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) "\n\t" \ + asm goto("1: " __stringify(insn) "\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ ::: clobber : fault); \ return; \ @@ -18,7 +18,7 @@ fault: \ #define svm_asm1(insn, op1, clobber...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %0\n\t" \ + asm goto("1: " __stringify(insn) " %0\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ :: op1 : clobber : fault); \ return; \ @@ -28,7 +28,7 @@ fault: \ #define svm_asm2(insn, op1, op2, clobber...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %1, %0\n\t" \ + asm goto("1: " __stringify(insn) " %1, %0\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ :: op1, op2 : clobber : fault); \ return; \ diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index e262bc2ba4e5..1111d9d08903 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -738,7 +738,7 @@ static int vmx_set_guest_uret_msr(struct vcpu_vmx *vmx, */ static int kvm_cpu_vmxoff(void) { - asm_volatile_goto("1: vmxoff\n\t" + asm goto("1: vmxoff\n\t" _ASM_EXTABLE(1b, %l[fault]) ::: "cc", "memory" : fault); @@ -2784,7 +2784,7 @@ static int kvm_cpu_vmxon(u64 vmxon_pointer) cr4_set_bits(X86_CR4_VMXE); - asm_volatile_goto("1: vmxon %[vmxon_pointer]\n\t" + asm goto("1: vmxon %[vmxon_pointer]\n\t" _ASM_EXTABLE(1b, %l[fault]) : : [vmxon_pointer] "m"(vmxon_pointer) : : fault); diff --git a/arch/x86/kvm/vmx/vmx_ops.h b/arch/x86/kvm/vmx/vmx_ops.h index f41ce3c24123..8060e5fc6dbd 100644 --- a/arch/x86/kvm/vmx/vmx_ops.h +++ b/arch/x86/kvm/vmx/vmx_ops.h @@ -94,7 +94,7 @@ static __always_inline unsigned long __vmcs_readl(unsigned long field) #ifdef CONFIG_CC_HAS_ASM_GOTO_OUTPUT - asm_volatile_goto("1: vmread %[field], %[output]\n\t" + asm_goto_output("1: vmread %[field], %[output]\n\t" "jna %l[do_fail]\n\t" _ASM_EXTABLE(1b, %l[do_exception]) @@ -188,7 +188,7 @@ static __always_inline unsigned long vmcs_readl(unsigned long field) #define vmx_asm1(insn, op1, error_args...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %0\n\t" \ + asm goto("1: " __stringify(insn) " %0\n\t" \ ".byte 0x2e\n\t" /* branch not taken hint */ \ "jna %l[error]\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ @@ -205,7 +205,7 @@ fault: \ #define vmx_asm2(insn, op1, op2, error_args...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %1, %0\n\t" \ + asm goto("1: " __stringify(insn) " %1, %0\n\t" \ ".byte 0x2e\n\t" /* branch not taken hint */ \ "jna %l[error]\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ diff --git a/arch/xtensa/include/asm/jump_label.h b/arch/xtensa/include/asm/jump_label.h index c812bf85021c..46c8596259d2 100644 --- a/arch/xtensa/include/asm/jump_label.h +++ b/arch/xtensa/include/asm/jump_label.h @@ -13,7 +13,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "_nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" @@ -38,7 +38,7 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, * make it reachable and wrap both into a no-transform block * to avoid any assembler interference with this. */ - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" ".begin no-transform\n\t" "_j %l[l_yes]\n\t" "2:\n\t" diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index aebb65bf95a7..c1a963be7d28 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -64,6 +64,25 @@ __builtin_unreachable(); \ } while (0) +/* + * GCC 'asm goto' with outputs miscompiles certain code sequences: + * + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110420 + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110422 + * + * Work it around via the same compiler barrier quirk that we used + * to use for the old 'asm goto' workaround. + * + * Also, always mark such 'asm goto' statements as volatile: all + * asm goto statements are supposed to be volatile as per the + * documentation, but some versions of gcc didn't actually do + * that for asms with outputs: + * + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98619 + */ +#define asm_goto_output(x...) \ + do { asm volatile goto(x); asm (""); } while (0) + #if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) #define __HAVE_BUILTIN_BSWAP32__ #define __HAVE_BUILTIN_BSWAP64__ diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 6f1ca49306d2..663d8791c871 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -362,8 +362,8 @@ struct ftrace_likely_data { #define __member_size(p) __builtin_object_size(p, 1) #endif -#ifndef asm_volatile_goto -#define asm_volatile_goto(x...) asm goto(x) +#ifndef asm_goto_output +#define asm_goto_output(x...) asm goto(x) #endif #ifdef CONFIG_CC_HAS_ASM_INLINE diff --git a/net/netfilter/nft_set_pipapo_avx2.c b/net/netfilter/nft_set_pipapo_avx2.c index 90e275bb3e5d..a3a8ddca9918 100644 --- a/net/netfilter/nft_set_pipapo_avx2.c +++ b/net/netfilter/nft_set_pipapo_avx2.c @@ -57,7 +57,7 @@ /* Jump to label if @reg is zero */ #define NFT_PIPAPO_AVX2_NOMATCH_GOTO(reg, label) \ - asm_volatile_goto("vptest %%ymm" #reg ", %%ymm" #reg ";" \ + asm goto("vptest %%ymm" #reg ", %%ymm" #reg ";" \ "je %l[" #label "]" : : : : label) /* Store 256 bits from YMM register into memory. Contrary to bucket load diff --git a/samples/bpf/asm_goto_workaround.h b/samples/bpf/asm_goto_workaround.h index 7048bb3594d6..634e81d83efd 100644 --- a/samples/bpf/asm_goto_workaround.h +++ b/samples/bpf/asm_goto_workaround.h @@ -4,14 +4,14 @@ #define __ASM_GOTO_WORKAROUND_H /* - * This will bring in asm_volatile_goto and asm_inline macro definitions + * This will bring in asm_goto_output and asm_inline macro definitions * if enabled by compiler and config options. */ #include -#ifdef asm_volatile_goto -#undef asm_volatile_goto -#define asm_volatile_goto(x...) asm volatile("invalid use of asm_volatile_goto") +#ifdef asm_goto_output +#undef asm_goto_output +#define asm_goto_output(x...) asm volatile("invalid use of asm_goto_output") #endif /* diff --git a/tools/arch/x86/include/asm/rmwcc.h b/tools/arch/x86/include/asm/rmwcc.h index 11ff975242ca..e2ff22b379a4 100644 --- a/tools/arch/x86/include/asm/rmwcc.h +++ b/tools/arch/x86/include/asm/rmwcc.h @@ -4,7 +4,7 @@ #define __GEN_RMWcc(fullop, var, cc, ...) \ do { \ - asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \ + asm goto (fullop "; j" cc " %l[cc_label]" \ : : "m" (var), ## __VA_ARGS__ \ : "memory" : cc_label); \ return 0; \ diff --git a/tools/include/linux/compiler_types.h b/tools/include/linux/compiler_types.h index 1bdd834bdd57..d09f9dc172a4 100644 --- a/tools/include/linux/compiler_types.h +++ b/tools/include/linux/compiler_types.h @@ -36,8 +36,8 @@ #include #endif -#ifndef asm_volatile_goto -#define asm_volatile_goto(x...) asm goto(x) +#ifndef asm_goto_output +#define asm_goto_output(x...) asm goto(x) #endif #endif /* __LINUX_COMPILER_TYPES_H */ -- cgit v1.2.3 From aec7961916f3f9e88766e2688992da6980f11b8d Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Tue, 6 Feb 2024 17:18:19 -0800 Subject: tls: fix race between async notify and socket close The submitting thread (one which called recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete() so any code past that point risks touching already freed data. Try to avoid the locking and extra flags altogether. Have the main thread hold an extra reference, this way we can depend solely on the atomic ref counter for synchronization. Don't futz with reiniting the completion, either, we are now tightly controlling when completion fires. Reported-by: valis Fixes: 0cada33241d9 ("net/tls: fix race condition causing kernel panic") Signed-off-by: Jakub Kicinski Reviewed-by: Simon Horman Reviewed-by: Eric Dumazet Reviewed-by: Sabrina Dubroca Signed-off-by: David S. Miller --- include/net/tls.h | 5 ----- net/tls/tls_sw.c | 43 ++++++++++--------------------------------- 2 files changed, 10 insertions(+), 38 deletions(-) (limited to 'include') diff --git a/include/net/tls.h b/include/net/tls.h index 962f0c501111..340ad43971e4 100644 --- a/include/net/tls.h +++ b/include/net/tls.h @@ -97,9 +97,6 @@ struct tls_sw_context_tx { struct tls_rec *open_rec; struct list_head tx_list; atomic_t encrypt_pending; - /* protect crypto_wait with encrypt_pending */ - spinlock_t encrypt_compl_lock; - int async_notify; u8 async_capable:1; #define BIT_TX_SCHEDULED 0 @@ -136,8 +133,6 @@ struct tls_sw_context_rx { struct tls_strparser strp; atomic_t decrypt_pending; - /* protect crypto_wait with decrypt_pending*/ - spinlock_t decrypt_compl_lock; struct sk_buff_head async_hold; struct wait_queue_head wq; }; diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 6a73714f34cc..635305bebfef 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -224,22 +224,15 @@ static void tls_decrypt_done(void *data, int err) kfree(aead_req); - spin_lock_bh(&ctx->decrypt_compl_lock); - if (!atomic_dec_return(&ctx->decrypt_pending)) + if (atomic_dec_and_test(&ctx->decrypt_pending)) complete(&ctx->async_wait.completion); - spin_unlock_bh(&ctx->decrypt_compl_lock); } static int tls_decrypt_async_wait(struct tls_sw_context_rx *ctx) { - int pending; - - spin_lock_bh(&ctx->decrypt_compl_lock); - reinit_completion(&ctx->async_wait.completion); - pending = atomic_read(&ctx->decrypt_pending); - spin_unlock_bh(&ctx->decrypt_compl_lock); - if (pending) + if (!atomic_dec_and_test(&ctx->decrypt_pending)) crypto_wait_req(-EINPROGRESS, &ctx->async_wait); + atomic_inc(&ctx->decrypt_pending); return ctx->async_wait.err; } @@ -267,6 +260,7 @@ static int tls_do_decryption(struct sock *sk, aead_request_set_callback(aead_req, CRYPTO_TFM_REQ_MAY_BACKLOG, tls_decrypt_done, aead_req); + DEBUG_NET_WARN_ON_ONCE(atomic_read(&ctx->decrypt_pending) < 1); atomic_inc(&ctx->decrypt_pending); } else { aead_request_set_callback(aead_req, @@ -455,7 +449,6 @@ static void tls_encrypt_done(void *data, int err) struct sk_msg *msg_en; bool ready = false; struct sock *sk; - int pending; msg_en = &rec->msg_encrypted; @@ -494,12 +487,8 @@ static void tls_encrypt_done(void *data, int err) ready = true; } - spin_lock_bh(&ctx->encrypt_compl_lock); - pending = atomic_dec_return(&ctx->encrypt_pending); - - if (!pending && ctx->async_notify) + if (atomic_dec_and_test(&ctx->encrypt_pending)) complete(&ctx->async_wait.completion); - spin_unlock_bh(&ctx->encrypt_compl_lock); if (!ready) return; @@ -511,22 +500,9 @@ static void tls_encrypt_done(void *data, int err) static int tls_encrypt_async_wait(struct tls_sw_context_tx *ctx) { - int pending; - - spin_lock_bh(&ctx->encrypt_compl_lock); - ctx->async_notify = true; - - pending = atomic_read(&ctx->encrypt_pending); - spin_unlock_bh(&ctx->encrypt_compl_lock); - if (pending) + if (!atomic_dec_and_test(&ctx->encrypt_pending)) crypto_wait_req(-EINPROGRESS, &ctx->async_wait); - else - reinit_completion(&ctx->async_wait.completion); - - /* There can be no concurrent accesses, since we have no - * pending encrypt operations - */ - WRITE_ONCE(ctx->async_notify, false); + atomic_inc(&ctx->encrypt_pending); return ctx->async_wait.err; } @@ -577,6 +553,7 @@ static int tls_do_encryption(struct sock *sk, /* Add the record in tx_list */ list_add_tail((struct list_head *)&rec->list, &ctx->tx_list); + DEBUG_NET_WARN_ON_ONCE(atomic_read(&ctx->encrypt_pending) < 1); atomic_inc(&ctx->encrypt_pending); rc = crypto_aead_encrypt(aead_req); @@ -2601,7 +2578,7 @@ static struct tls_sw_context_tx *init_ctx_tx(struct tls_context *ctx, struct soc } crypto_init_wait(&sw_ctx_tx->async_wait); - spin_lock_init(&sw_ctx_tx->encrypt_compl_lock); + atomic_set(&sw_ctx_tx->encrypt_pending, 1); INIT_LIST_HEAD(&sw_ctx_tx->tx_list); INIT_DELAYED_WORK(&sw_ctx_tx->tx_work.work, tx_work_handler); sw_ctx_tx->tx_work.sk = sk; @@ -2622,7 +2599,7 @@ static struct tls_sw_context_rx *init_ctx_rx(struct tls_context *ctx) } crypto_init_wait(&sw_ctx_rx->async_wait); - spin_lock_init(&sw_ctx_rx->decrypt_compl_lock); + atomic_set(&sw_ctx_rx->decrypt_pending, 1); init_waitqueue_head(&sw_ctx_rx->wq); skb_queue_head_init(&sw_ctx_rx->rx_list); skb_queue_head_init(&sw_ctx_rx->async_hold); -- cgit v1.2.3 From 119ff04864a24470b1e531bb53e5c141aa8fefb0 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 8 Feb 2024 14:43:21 +0000 Subject: tcp: move tp->scaling_ratio to tcp_sock_read_txrx group tp->scaling_ratio is a read mostly field, used in rx and tx fast paths. Fixes: d5fed5addb2b ("tcp: reorganize tcp_sock fast path variables") Signed-off-by: Eric Dumazet Cc: Coco Li Cc: Wei Wang Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- Documentation/networking/net_cachelines/tcp_sock.rst | 2 +- include/linux/tcp.h | 2 +- net/ipv4/tcp.c | 3 ++- 3 files changed, 4 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/Documentation/networking/net_cachelines/tcp_sock.rst b/Documentation/networking/net_cachelines/tcp_sock.rst index 97d7a5c8e01c..803912291479 100644 --- a/Documentation/networking/net_cachelines/tcp_sock.rst +++ b/Documentation/networking/net_cachelines/tcp_sock.rst @@ -38,7 +38,7 @@ u32 max_window read_mostly - u32 mss_cache read_mostly read_mostly tcp_rate_check_app_limited,tcp_current_mss,tcp_sync_mss,tcp_sndbuf_expand,tcp_tso_should_defer(tx);tcp_update_pacing_rate,tcp_clean_rtx_queue(rx) u32 window_clamp read_mostly read_write tcp_rcv_space_adjust,__tcp_select_window u32 rcv_ssthresh read_mostly - __tcp_select_window -u82 scaling_ratio +u8 scaling_ratio read_mostly read_mostly tcp_win_from_space struct tcp_rack u16 advmss - read_mostly tcp_rcv_space_adjust u8 compressed_ack diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 89b290d8c8dc..168f5dca6609 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -221,6 +221,7 @@ struct tcp_sock { u32 lost_out; /* Lost packets */ u32 sacked_out; /* SACK'd packets */ u16 tcp_header_len; /* Bytes of tcp header to send */ + u8 scaling_ratio; /* see tcp_win_from_space() */ u8 chrono_type : 2, /* current chronograph type */ repair : 1, is_sack_reneg:1, /* in recovery from loss with SACK reneg? */ @@ -352,7 +353,6 @@ struct tcp_sock { u32 compressed_ack_rcv_nxt; struct list_head tsq_node; /* anchor in tsq_tasklet.head list */ - u8 scaling_ratio; /* see tcp_win_from_space() */ /* Information of the most recently (s)acked skb */ struct tcp_rack { u64 mstamp; /* (Re)sent time of the skb */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 7e2481b9eae1..c82dc42f57c6 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -4615,7 +4615,8 @@ static void __init tcp_struct_check(void) CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_read_txrx, prr_out); CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_read_txrx, lost_out); CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_read_txrx, sacked_out); - CACHELINE_ASSERT_GROUP_SIZE(struct tcp_sock, tcp_sock_read_txrx, 31); + CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_read_txrx, scaling_ratio); + CACHELINE_ASSERT_GROUP_SIZE(struct tcp_sock, tcp_sock_read_txrx, 32); /* RX read-mostly hotpath cache lines */ CACHELINE_ASSERT_GROUP_MEMBER(struct tcp_sock, tcp_sock_read_rx, copied_seq); -- cgit v1.2.3 From 666a877deab2bcf8fd11c962d69e687e18168a6f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 8 Feb 2024 14:43:22 +0000 Subject: tcp: move tp->tcp_usec_ts to tcp_sock_read_txrx group tp->tcp_usec_ts is a read mostly field, used in rx and tx fast paths. Fixes: d5fed5addb2b ("tcp: reorganize tcp_sock fast path variables") Signed-off-by: Eric Dumazet Cc: Coco Li Cc: Wei Wang Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- Documentation/networking/net_cachelines/tcp_sock.rst | 2 +- include/linux/tcp.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/Documentation/networking/net_cachelines/tcp_sock.rst b/Documentation/networking/net_cachelines/tcp_sock.rst index 803912291479..1c154cbd1848 100644 --- a/Documentation/networking/net_cachelines/tcp_sock.rst +++ b/Documentation/networking/net_cachelines/tcp_sock.rst @@ -44,7 +44,7 @@ u16 advmss - read_m u8 compressed_ack u8:2 dup_ack_counter u8:1 tlp_retrans -u8:1 tcp_usec_ts +u8:1 tcp_usec_ts read_mostly read_mostly u32 chrono_start read_write - tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) u32[3] chrono_stat read_write - tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) u8:2 chrono_type read_write - tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 168f5dca6609..a1c47a6d69b0 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -224,6 +224,7 @@ struct tcp_sock { u8 scaling_ratio; /* see tcp_win_from_space() */ u8 chrono_type : 2, /* current chronograph type */ repair : 1, + tcp_usec_ts : 1, /* TSval values in usec */ is_sack_reneg:1, /* in recovery from loss with SACK reneg? */ is_cwnd_limited:1;/* forward progress limited by snd_cwnd? */ __cacheline_group_end(tcp_sock_read_txrx); @@ -368,8 +369,7 @@ struct tcp_sock { u8 compressed_ack; u8 dup_ack_counter:2, tlp_retrans:1, /* TLP is a retransmission */ - tcp_usec_ts:1, /* TSval values in usec */ - unused:4; + unused:5; u8 thin_lto : 1,/* Use linear timeouts for thin streams */ recvmsg_inq : 1,/* Indicate # of bytes in queue upon recvmsg */ fastopen_connect:1, /* FASTOPEN_CONNECT sockopt */ -- cgit v1.2.3 From c353c7b7ffb7ae6ed8f3339906fe33c8be6cf344 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 8 Feb 2024 14:43:23 +0000 Subject: net-device: move lstats in net_device_read_txrx dev->lstats is notably used from loopback ndo_start_xmit() and other virtual drivers. Per cpu stats updates are dirtying per-cpu data, but the pointer itself is read-only. Fixes: 43a71cd66b9c ("net-device: reorganize net_device fast path variables") Signed-off-by: Eric Dumazet Cc: Coco Li Cc: Simon Horman Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- Documentation/networking/net_cachelines/net_device.rst | 4 ++-- include/linux/netdevice.h | 10 +++++----- net/core/dev.c | 3 ++- 3 files changed, 9 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/Documentation/networking/net_cachelines/net_device.rst b/Documentation/networking/net_cachelines/net_device.rst index e75a53593bb9..dceb49d56a91 100644 --- a/Documentation/networking/net_cachelines/net_device.rst +++ b/Documentation/networking/net_cachelines/net_device.rst @@ -136,8 +136,8 @@ struct_netpoll_info* npinfo - possible_net_t nd_net - read_mostly (dev_net)napi_busy_loop,tcp_v(4/6)_rcv,ip(v6)_rcv,ip(6)_input,ip(6)_input_finish void* ml_priv enum_netdev_ml_priv_type ml_priv_type -struct_pcpu_lstats__percpu* lstats -struct_pcpu_sw_netstats__percpu* tstats +struct_pcpu_lstats__percpu* lstats read_mostly dev_lstats_add() +struct_pcpu_sw_netstats__percpu* tstats read_mostly dev_sw_netstats_tx_add() struct_pcpu_dstats__percpu* dstats struct_garp_port* garp_port struct_mrp_port* mrp_port diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 118c40258d07..ef7bfbb98497 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2141,6 +2141,11 @@ struct net_device { /* TXRX read-mostly hotpath */ __cacheline_group_begin(net_device_read_txrx); + union { + struct pcpu_lstats __percpu *lstats; + struct pcpu_sw_netstats __percpu *tstats; + struct pcpu_dstats __percpu *dstats; + }; unsigned int flags; unsigned short hard_header_len; netdev_features_t features; @@ -2395,11 +2400,6 @@ struct net_device { enum netdev_ml_priv_type ml_priv_type; enum netdev_stat_type pcpu_stat_type:8; - union { - struct pcpu_lstats __percpu *lstats; - struct pcpu_sw_netstats __percpu *tstats; - struct pcpu_dstats __percpu *dstats; - }; #if IS_ENABLED(CONFIG_GARP) struct garp_port __rcu *garp_port; diff --git a/net/core/dev.c b/net/core/dev.c index cb2dab0feee0..9bb792cecc16 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -11652,11 +11652,12 @@ static void __init net_dev_struct_check(void) CACHELINE_ASSERT_GROUP_SIZE(struct net_device, net_device_read_tx, 160); /* TXRX read-mostly hotpath */ + CACHELINE_ASSERT_GROUP_MEMBER(struct net_device, net_device_read_txrx, lstats); CACHELINE_ASSERT_GROUP_MEMBER(struct net_device, net_device_read_txrx, flags); CACHELINE_ASSERT_GROUP_MEMBER(struct net_device, net_device_read_txrx, hard_header_len); CACHELINE_ASSERT_GROUP_MEMBER(struct net_device, net_device_read_txrx, features); CACHELINE_ASSERT_GROUP_MEMBER(struct net_device, net_device_read_txrx, ip6_ptr); - CACHELINE_ASSERT_GROUP_SIZE(struct net_device, net_device_read_txrx, 30); + CACHELINE_ASSERT_GROUP_SIZE(struct net_device, net_device_read_txrx, 38); /* RX read-mostly hotpath */ CACHELINE_ASSERT_GROUP_MEMBER(struct net_device, net_device_read_rx, ptype_specific); -- cgit v1.2.3 From 11ba1728be3edb6928791f4c622f154ebe228ae6 Mon Sep 17 00:00:00 2001 From: Jiaxun Yang Date: Fri, 2 Feb 2024 12:30:26 +0000 Subject: ptrace: Introduce exception_ip arch hook On architectures with delay slot, architecture level instruction pointer (or program counter) in pt_regs may differ from where exception was triggered. Introduce exception_ip hook to invoke architecture code and determine actual instruction pointer to the exception. Link: https://lore.kernel.org/lkml/00d1b813-c55f-4365-8d81-d70258e10b16@app.fastmail.com/ Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer --- arch/mips/include/asm/ptrace.h | 2 ++ arch/mips/kernel/ptrace.c | 7 +++++++ include/linux/ptrace.h | 4 ++++ 3 files changed, 13 insertions(+) (limited to 'include') diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h index daf3cf244ea9..701a233583c2 100644 --- a/arch/mips/include/asm/ptrace.h +++ b/arch/mips/include/asm/ptrace.h @@ -154,6 +154,8 @@ static inline long regs_return_value(struct pt_regs *regs) } #define instruction_pointer(regs) ((regs)->cp0_epc) +extern unsigned long exception_ip(struct pt_regs *regs); +#define exception_ip(regs) exception_ip(regs) #define profile_pc(regs) instruction_pointer(regs) extern asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall); diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index d9df543f7e2c..59288c13b581 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -31,6 +31,7 @@ #include #include +#include #include #include #include @@ -48,6 +49,12 @@ #define CREATE_TRACE_POINTS #include +unsigned long exception_ip(struct pt_regs *regs) +{ + return exception_epc(regs); +} +EXPORT_SYMBOL(exception_ip); + /* * Called by kernel/ptrace.c when detaching.. * diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index eaaef3ffec22..90507d4afcd6 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -393,6 +393,10 @@ static inline void user_single_step_report(struct pt_regs *regs) #define current_user_stack_pointer() user_stack_pointer(current_pt_regs()) #endif +#ifndef exception_ip +#define exception_ip(x) instruction_pointer(x) +#endif + extern int task_current_syscall(struct task_struct *target, struct syscall_info *info); extern void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact); -- cgit v1.2.3 From bf5802238dc181b1f7375d358af1d01cd72d1c11 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 6 Feb 2024 09:03:24 -0800 Subject: xen/gntalloc: Replace UAPI 1-element array Without changing the structure size (since it is UAPI), add a proper flexible array member, and reference it in the kernel so that it will not be trip the array-bounds sanitizer[1]. Link: https://github.com/KSPP/linux/issues/113 [1] Cc: Juergen Gross Cc: Stefano Stabellini Cc: Oleksandr Tyshchenko Cc: Gustavo A. R. Silva Cc: xen-devel@lists.xenproject.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20240206170320.work.437-kees@kernel.org Signed-off-by: Juergen Gross --- drivers/xen/gntalloc.c | 2 +- include/uapi/xen/gntalloc.h | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c index 26ffb8755ffb..f93f73ecefee 100644 --- a/drivers/xen/gntalloc.c +++ b/drivers/xen/gntalloc.c @@ -317,7 +317,7 @@ static long gntalloc_ioctl_alloc(struct gntalloc_file_private_data *priv, rc = -EFAULT; goto out_free; } - if (copy_to_user(arg->gref_ids, gref_ids, + if (copy_to_user(arg->gref_ids_flex, gref_ids, sizeof(gref_ids[0]) * op.count)) { rc = -EFAULT; goto out_free; diff --git a/include/uapi/xen/gntalloc.h b/include/uapi/xen/gntalloc.h index 48d2790ef928..3109282672f3 100644 --- a/include/uapi/xen/gntalloc.h +++ b/include/uapi/xen/gntalloc.h @@ -31,7 +31,10 @@ struct ioctl_gntalloc_alloc_gref { __u64 index; /* The grant references of the newly created grant, one per page */ /* Variable size, depending on count */ - __u32 gref_ids[1]; + union { + __u32 gref_ids[1]; + __DECLARE_FLEX_ARRAY(__u32, gref_ids_flex); + }; }; #define GNTALLOC_FLAG_WRITABLE 1 -- cgit v1.2.3 From 6ac86372102b477083db99a9af8246fb916271b5 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 25 Jan 2024 09:15:59 +0100 Subject: gpiolib: add gpiod_to_gpio_device() stub for !GPIOLIB Add empty stub of gpiod_to_gpio_device() when GPIOLIB is not enabled. Cc: Fixes: 370232d096e3 ("gpiolib: provide gpiod_to_gpio_device()") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski --- include/linux/gpio/driver.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 9a5c6c76e653..012797e7106d 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -819,6 +819,12 @@ static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) return ERR_PTR(-ENODEV); } +static inline struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) +{ + WARN_ON(1); + return ERR_PTR(-ENODEV); +} + static inline int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset) { -- cgit v1.2.3 From ebe0c15b135b1e4092c25b95d89e9a5899467499 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 25 Jan 2024 09:16:00 +0100 Subject: gpiolib: add gpio_device_get_base() stub for !GPIOLIB Add empty stub of gpio_device_get_base() when GPIOLIB is not enabled. Cc: Fixes: 8c85a102fc4e ("gpiolib: provide gpio_device_get_base()") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski --- include/linux/gpio/driver.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 012797e7106d..c1df7698edb0 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -825,6 +825,12 @@ static inline struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) return ERR_PTR(-ENODEV); } +static inline int gpio_device_get_base(struct gpio_device *gdev) +{ + WARN_ON(1); + return -ENODEV; +} + static inline int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset) { -- cgit v1.2.3 From 2df8aa3cad407044f2febdbbdf220c6dae839c79 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 25 Jan 2024 09:16:01 +0100 Subject: gpiolib: add gpio_device_get_label() stub for !GPIOLIB Add empty stub of gpio_device_get_label() when GPIOLIB is not enabled. Cc: Fixes: d1f7728259ef ("gpiolib: provide gpio_device_get_label()") Suggested-by: kernel test robot Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski --- include/linux/gpio/driver.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index c1df7698edb0..7f75c9a51874 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -831,6 +831,12 @@ static inline int gpio_device_get_base(struct gpio_device *gdev) return -ENODEV; } +static inline const char *gpio_device_get_label(struct gpio_device *gdev) +{ + WARN_ON(1); + return NULL; +} + static inline int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset) { -- cgit v1.2.3 From 29f6975332479f92233594901c649ff4d71f8cb6 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Mon, 5 Feb 2024 11:10:25 -0800 Subject: nvme: implement support for relaxed effects NVM Express TP4167 provides a way for controllers to report a relaxed execution constraint. Specifically, it notifies of exclusivity for IO vs. admin commands instead of grouping these together. If set, then we don't need to freeze IO in order to execute that admin command. The freezing distrupts IO processes, so it's nice to avoid that if the controller tells us it's not necessary. Reviewed-by: Christoph Hellwig Signed-off-by: Keith Busch --- drivers/nvme/host/core.c | 4 ++++ include/linux/nvme.h | 1 + 2 files changed, 5 insertions(+) (limited to 'include') diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 60537c9224bf..0a96362912ce 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1153,6 +1153,10 @@ u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u8 opcode) effects &= ~NVME_CMD_EFFECTS_CSE_MASK; } else { effects = le32_to_cpu(ctrl->effects->acs[opcode]); + + /* Ignore execution restrictions if any relaxation bits are set */ + if (effects & NVME_CMD_EFFECTS_CSER_MASK) + effects &= ~NVME_CMD_EFFECTS_CSE_MASK; } return effects; diff --git a/include/linux/nvme.h b/include/linux/nvme.h index bc605ec4a3fd..3ef4053ea950 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -646,6 +646,7 @@ enum { NVME_CMD_EFFECTS_NCC = 1 << 2, NVME_CMD_EFFECTS_NIC = 1 << 3, NVME_CMD_EFFECTS_CCC = 1 << 4, + NVME_CMD_EFFECTS_CSER_MASK = GENMASK(15, 14), NVME_CMD_EFFECTS_CSE_MASK = GENMASK(18, 16), NVME_CMD_EFFECTS_UUID_SEL = 1 << 19, NVME_CMD_EFFECTS_SCOPE_MASK = GENMASK(31, 20), -- cgit v1.2.3 From 8a566f94104df87a067458351675129bb4e1ece2 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 15 Feb 2024 16:22:55 +0200 Subject: seq_buf: Don't use "proxy" headers Update header inclusions to follow IWYU (Include What You Use) principle. Link: https://lkml.kernel.org/r/20240215142255.400264-1-andriy.shevchenko@linux.intel.com Cc: "Matthew Wilcox (Oracle)" Cc: Andrew Morton Signed-off-by: Andy Shevchenko Signed-off-by: Steven Rostedt (Google) --- include/linux/seq_buf.h | 5 ++++- lib/seq_buf.c | 14 ++++++++++++-- 2 files changed, 16 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index c44f4b47b945..07b26e751060 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -2,7 +2,10 @@ #ifndef _LINUX_SEQ_BUF_H #define _LINUX_SEQ_BUF_H -#include +#include +#include +#include +#include /* * Trace sequences are used to allow a function to call several other functions diff --git a/lib/seq_buf.c b/lib/seq_buf.c index 010c730ca7fc..dfbfdc497d85 100644 --- a/lib/seq_buf.c +++ b/lib/seq_buf.c @@ -13,9 +13,19 @@ * seq_buf_init() more than once to reset the seq_buf to start * from scratch. */ -#include -#include + +#include +#include +#include +#include +#include +#include #include +#include +#include +#include +#include +#include /** * seq_buf_can_fit - can the new data fit in the current buffer? -- cgit v1.2.3 From 6efe4d18796934b8ada66c1c446510e7f2d9b972 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 15 Feb 2024 17:25:06 +0200 Subject: seq_buf: Fix kernel documentation There are plenty of issues with the kernel documentation here: - misspelled word "sequence" - different style of returned value descriptions - missed Return sections - unaligned style of ASCII / NUL-terminated / etc - wrong function references Fix all these. Link: https://lkml.kernel.org/r/20240215152506.598340-1-andriy.shevchenko@linux.intel.com Cc: Andrew Morton Signed-off-by: Andy Shevchenko Reviewed-by: Randy Dunlap Signed-off-by: Steven Rostedt (Google) --- include/linux/seq_buf.h | 12 ++++++------ lib/seq_buf.c | 35 ++++++++++++++++++----------------- 2 files changed, 24 insertions(+), 23 deletions(-) (limited to 'include') diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index 07b26e751060..fe41da005970 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -13,7 +13,7 @@ */ /** - * seq_buf - seq buffer structure + * struct seq_buf - seq buffer structure * @buffer: pointer to the buffer * @size: size of the buffer * @len: the amount of data inside the buffer @@ -80,10 +80,10 @@ static inline unsigned int seq_buf_used(struct seq_buf *s) } /** - * seq_buf_str - get %NUL-terminated C string from seq_buf + * seq_buf_str - get NUL-terminated C string from seq_buf * @s: the seq_buf handle * - * This makes sure that the buffer in @s is nul terminated and + * This makes sure that the buffer in @s is NUL-terminated and * safe to read as a string. * * Note, if this is called when the buffer has overflowed, then @@ -93,7 +93,7 @@ static inline unsigned int seq_buf_used(struct seq_buf *s) * After this function is called, s->buffer is safe to use * in string operations. * - * Returns @s->buf after making sure it is terminated. + * Returns: @s->buf after making sure it is terminated. */ static inline const char *seq_buf_str(struct seq_buf *s) { @@ -113,7 +113,7 @@ static inline const char *seq_buf_str(struct seq_buf *s) * @s: the seq_buf handle * @bufp: the beginning of the buffer is stored here * - * Return the number of bytes available in the buffer, or zero if + * Returns: the number of bytes available in the buffer, or zero if * there's no space. */ static inline size_t seq_buf_get_buf(struct seq_buf *s, char **bufp) @@ -135,7 +135,7 @@ static inline size_t seq_buf_get_buf(struct seq_buf *s, char **bufp) * @num: the number of bytes to commit * * Commit @num bytes of data written to a buffer previously acquired - * by seq_buf_get. To signal an error condition, or that the data + * by seq_buf_get_buf(). To signal an error condition, or that the data * didn't fit in the available space, pass a negative @num value. */ static inline void seq_buf_commit(struct seq_buf *s, int num) diff --git a/lib/seq_buf.c b/lib/seq_buf.c index dfbfdc497d85..f3f3436d60a9 100644 --- a/lib/seq_buf.c +++ b/lib/seq_buf.c @@ -32,7 +32,7 @@ * @s: the seq_buf descriptor * @len: The length to see if it can fit in the current buffer * - * Returns true if there's enough unused space in the seq_buf buffer + * Returns: true if there's enough unused space in the seq_buf buffer * to fit the amount of new data according to @len. */ static bool seq_buf_can_fit(struct seq_buf *s, size_t len) @@ -45,7 +45,7 @@ static bool seq_buf_can_fit(struct seq_buf *s, size_t len) * @m: the seq_file descriptor that is the destination * @s: the seq_buf descriptor that is the source. * - * Returns zero on success, non zero otherwise + * Returns: zero on success, non-zero otherwise. */ int seq_buf_print_seq(struct seq_file *m, struct seq_buf *s) { @@ -60,9 +60,9 @@ int seq_buf_print_seq(struct seq_file *m, struct seq_buf *s) * @fmt: printf format string * @args: va_list of arguments from a printf() type function * - * Writes a vnprintf() format into the sequencce buffer. + * Writes a vnprintf() format into the sequence buffer. * - * Returns zero on success, -1 on overflow. + * Returns: zero on success, -1 on overflow. */ int seq_buf_vprintf(struct seq_buf *s, const char *fmt, va_list args) { @@ -88,7 +88,7 @@ int seq_buf_vprintf(struct seq_buf *s, const char *fmt, va_list args) * * Writes a printf() format into the sequence buffer. * - * Returns zero on success, -1 on overflow. + * Returns: zero on success, -1 on overflow. */ int seq_buf_printf(struct seq_buf *s, const char *fmt, ...) { @@ -104,12 +104,12 @@ int seq_buf_printf(struct seq_buf *s, const char *fmt, ...) EXPORT_SYMBOL_GPL(seq_buf_printf); /** - * seq_buf_do_printk - printk seq_buf line by line + * seq_buf_do_printk - printk() seq_buf line by line * @s: seq_buf descriptor * @lvl: printk level * * printk()-s a multi-line sequential buffer line by line. The function - * makes sure that the buffer in @s is nul terminated and safe to read + * makes sure that the buffer in @s is NUL-terminated and safe to read * as a string. */ void seq_buf_do_printk(struct seq_buf *s, const char *lvl) @@ -149,7 +149,7 @@ EXPORT_SYMBOL_GPL(seq_buf_do_printk); * This function will take the format and the binary array and finish * the conversion into the ASCII string within the buffer. * - * Returns zero on success, -1 on overflow. + * Returns: zero on success, -1 on overflow. */ int seq_buf_bprintf(struct seq_buf *s, const char *fmt, const u32 *binary) { @@ -177,7 +177,7 @@ int seq_buf_bprintf(struct seq_buf *s, const char *fmt, const u32 *binary) * * Copy a simple string into the sequence buffer. * - * Returns zero on success, -1 on overflow + * Returns: zero on success, -1 on overflow. */ int seq_buf_puts(struct seq_buf *s, const char *str) { @@ -206,7 +206,7 @@ EXPORT_SYMBOL_GPL(seq_buf_puts); * * Copy a single character into the sequence buffer. * - * Returns zero on success, -1 on overflow + * Returns: zero on success, -1 on overflow. */ int seq_buf_putc(struct seq_buf *s, unsigned char c) { @@ -222,7 +222,7 @@ int seq_buf_putc(struct seq_buf *s, unsigned char c) EXPORT_SYMBOL_GPL(seq_buf_putc); /** - * seq_buf_putmem - write raw data into the sequenc buffer + * seq_buf_putmem - write raw data into the sequence buffer * @s: seq_buf descriptor * @mem: The raw memory to copy into the buffer * @len: The length of the raw memory to copy (in bytes) @@ -231,7 +231,7 @@ EXPORT_SYMBOL_GPL(seq_buf_putc); * buffer and a strcpy() would not work. Using this function allows * for such cases. * - * Returns zero on success, -1 on overflow + * Returns: zero on success, -1 on overflow. */ int seq_buf_putmem(struct seq_buf *s, const void *mem, unsigned int len) { @@ -259,7 +259,7 @@ int seq_buf_putmem(struct seq_buf *s, const void *mem, unsigned int len) * raw memory into the buffer it writes its ASCII representation of it * in hex characters. * - * Returns zero on success, -1 on overflow + * Returns: zero on success, -1 on overflow. */ int seq_buf_putmem_hex(struct seq_buf *s, const void *mem, unsigned int len) @@ -307,7 +307,7 @@ int seq_buf_putmem_hex(struct seq_buf *s, const void *mem, * * Write a path name into the sequence buffer. * - * Returns the number of written bytes on success, -1 on overflow + * Returns: the number of written bytes on success, -1 on overflow. */ int seq_buf_path(struct seq_buf *s, const struct path *path, const char *esc) { @@ -342,6 +342,7 @@ int seq_buf_path(struct seq_buf *s, const struct path *path, const char *esc) * or until it reaches the end of the content in the buffer (@s->len), * whichever comes first. * + * Returns: * On success, it returns a positive number of the number of bytes * it copied. * @@ -392,11 +393,11 @@ int seq_buf_to_user(struct seq_buf *s, char __user *ubuf, size_t start, int cnt) * linebuf size is maximal length for one line. * 32 * 3 - maximum bytes per line, each printed into 2 chars + 1 for * separating space - * 2 - spaces separating hex dump and ascii representation - * 32 - ascii representation + * 2 - spaces separating hex dump and ASCII representation + * 32 - ASCII representation * 1 - terminating '\0' * - * Returns zero on success, -1 on overflow + * Returns: zero on success, -1 on overflow. */ int seq_buf_hex_dump(struct seq_buf *s, const char *prefix_str, int prefix_type, int rowsize, int groupsize, -- cgit v1.2.3 From 68fb3ca0e408e00db1c3f8fccdfa19e274c033be Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 15 Feb 2024 11:14:33 -0800 Subject: update workarounds for gcc "asm goto" issue In commit 4356e9f841f7 ("work around gcc bugs with 'asm goto' with outputs") I did the gcc workaround unconditionally, because the cause of the bad code generation wasn't entirely clear. In the meantime, Jakub Jelinek debugged the issue, and has come up with a fix in gcc [2], which also got backported to the still maintained branches of gcc-11, gcc-12 and gcc-13. Note that while the fix technically wasn't in the original gcc-14 branch, Jakub says: "while it is true that no GCC 14 snapshots until today (or whenever the fix will be committed) have the fix, for GCC trunk it is up to the distros to use the latest snapshot if they use it at all and would allow better testing of the kernel code without the workaround, so that if there are other issues they won't be discovered years later. Most userland code doesn't actually use asm goto with outputs..." so we will consider gcc-14 to be fixed - if somebody is using gcc snapshots of the gcc-14 before the fix, they should upgrade. Note that while the bug goes back to gcc-11, in practice other gcc changes seem to have effectively hidden it since gcc-12.1 as per a bisect by Jakub. So even a gcc-14 snapshot without the fix likely doesn't show actual problems. Also, make the default 'asm_goto_output()' macro mark the asm as volatile by hand, because of an unrelated gcc issue [1] where it doesn't match the documented behavior ("asm goto is always volatile"). Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103979 [1] Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921 [2] Link: https://lore.kernel.org/all/20240208220604.140859-1-seanjc@google.com/ Requested-by: Jakub Jelinek Cc: Uros Bizjak Cc: Nick Desaulniers Cc: Sean Christopherson Cc: Andrew Pinski Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc.h | 7 ++++--- include/linux/compiler_types.h | 9 ++++++++- init/Kconfig | 9 +++++++++ 3 files changed, 21 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index c1a963be7d28..75bd1692d2e3 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -67,10 +67,9 @@ /* * GCC 'asm goto' with outputs miscompiles certain code sequences: * - * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110420 - * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110422 + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921 * - * Work it around via the same compiler barrier quirk that we used + * Work around it via the same compiler barrier quirk that we used * to use for the old 'asm goto' workaround. * * Also, always mark such 'asm goto' statements as volatile: all @@ -80,8 +79,10 @@ * * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98619 */ +#ifdef CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND #define asm_goto_output(x...) \ do { asm volatile goto(x); asm (""); } while (0) +#endif #if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) #define __HAVE_BUILTIN_BSWAP32__ diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 663d8791c871..0caf354cb94b 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -362,8 +362,15 @@ struct ftrace_likely_data { #define __member_size(p) __builtin_object_size(p, 1) #endif +/* + * Some versions of gcc do not mark 'asm goto' volatile: + * + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103979 + * + * We do it here by hand, because it doesn't hurt. + */ #ifndef asm_goto_output -#define asm_goto_output(x...) asm goto(x) +#define asm_goto_output(x...) asm volatile goto(x) #endif #ifdef CONFIG_CC_HAS_ASM_INLINE diff --git a/init/Kconfig b/init/Kconfig index deda3d14135b..8426d59cc634 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -89,6 +89,15 @@ config CC_HAS_ASM_GOTO_TIED_OUTPUT # Detect buggy gcc and clang, fixed in gcc-11 clang-14. def_bool $(success,echo 'int foo(int *x) { asm goto (".long (%l[bar]) - .": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $CC -x c - -c -o /dev/null) +config GCC_ASM_GOTO_OUTPUT_WORKAROUND + bool + depends on CC_IS_GCC && CC_HAS_ASM_GOTO_OUTPUT + # Fixed in GCC 14, 13.3, 12.4 and 11.5 + # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921 + default y if GCC_VERSION < 110500 + default y if GCC_VERSION >= 120000 && GCC_VERSION < 120400 + default y if GCC_VERSION >= 130000 && GCC_VERSION < 130300 + config TOOLS_SUPPORT_RELR def_bool $(success,env "CC=$(CC)" "LD=$(LD)" "NM=$(NM)" "OBJCOPY=$(OBJCOPY)" $(srctree)/scripts/tools-support-relr.sh) -- cgit v1.2.3 From f3e6b3ae9cfc128af11b665c6ef4022ba2683778 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sun, 18 Feb 2024 14:28:57 -0800 Subject: acpi/ghes: Remove CXL CPER notifications Initial tests with the CXL CPER implementation identified that error reports were being duplicated in the log and the trace event [1]. Then it was discovered that the notification handler took sleeping locks while the GHES event handling runs in spin_lock_irqsave() context [2] While the duplicate reporting was fixed in v6.8-rc4, the fix for the sleeping-lock-vs-atomic collision would enjoy more time to settle and gain some test cycles. Given how late it is in the development cycle, remove the CXL hookup for now and try again during the next merge window. Note that end result is that v6.8 does not emit CXL CPER payloads to the kernel log, but this is in line with the CXL trend to move error reporting to trace events instead of the kernel log. Cc: Ard Biesheuvel Cc: Rafael J. Wysocki Cc: Jonathan Cameron Reviewed-by: Ira Weiny Link: http://lore.kernel.org/r/20240108165855.00002f5a@Huawei.com [1] Closes: http://lore.kernel.org/r/b963c490-2c13-4b79-bbe7-34c6568423c7@moroto.mountain [2] Signed-off-by: Dan Williams --- drivers/acpi/apei/ghes.c | 63 ----------------------------------------------- drivers/cxl/pci.c | 57 +----------------------------------------- include/linux/cxl-event.h | 18 -------------- 3 files changed, 1 insertion(+), 137 deletions(-) (limited to 'include') diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index fe825a432c5b..ab2a82cb1b0b 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -26,7 +26,6 @@ #include #include #include -#include #include #include #include @@ -674,52 +673,6 @@ static void ghes_defer_non_standard_event(struct acpi_hest_generic_data *gdata, schedule_work(&entry->work); } -/* - * Only a single callback can be registered for CXL CPER events. - */ -static DECLARE_RWSEM(cxl_cper_rw_sem); -static cxl_cper_callback cper_callback; - -static void cxl_cper_post_event(enum cxl_event_type event_type, - struct cxl_cper_event_rec *rec) -{ - if (rec->hdr.length <= sizeof(rec->hdr) || - rec->hdr.length > sizeof(*rec)) { - pr_err(FW_WARN "CXL CPER Invalid section length (%u)\n", - rec->hdr.length); - return; - } - - if (!(rec->hdr.validation_bits & CPER_CXL_COMP_EVENT_LOG_VALID)) { - pr_err(FW_WARN "CXL CPER invalid event\n"); - return; - } - - guard(rwsem_read)(&cxl_cper_rw_sem); - if (cper_callback) - cper_callback(event_type, rec); -} - -int cxl_cper_register_callback(cxl_cper_callback callback) -{ - guard(rwsem_write)(&cxl_cper_rw_sem); - if (cper_callback) - return -EINVAL; - cper_callback = callback; - return 0; -} -EXPORT_SYMBOL_NS_GPL(cxl_cper_register_callback, CXL); - -int cxl_cper_unregister_callback(cxl_cper_callback callback) -{ - guard(rwsem_write)(&cxl_cper_rw_sem); - if (callback != cper_callback) - return -EINVAL; - cper_callback = NULL; - return 0; -} -EXPORT_SYMBOL_NS_GPL(cxl_cper_unregister_callback, CXL); - static bool ghes_do_proc(struct ghes *ghes, const struct acpi_hest_generic_status *estatus) { @@ -754,22 +707,6 @@ static bool ghes_do_proc(struct ghes *ghes, } else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) { queued = ghes_handle_arm_hw_error(gdata, sev, sync); - } else if (guid_equal(sec_type, &CPER_SEC_CXL_GEN_MEDIA_GUID)) { - struct cxl_cper_event_rec *rec = - acpi_hest_get_payload(gdata); - - cxl_cper_post_event(CXL_CPER_EVENT_GEN_MEDIA, rec); - } else if (guid_equal(sec_type, &CPER_SEC_CXL_DRAM_GUID)) { - struct cxl_cper_event_rec *rec = - acpi_hest_get_payload(gdata); - - cxl_cper_post_event(CXL_CPER_EVENT_DRAM, rec); - } else if (guid_equal(sec_type, - &CPER_SEC_CXL_MEM_MODULE_GUID)) { - struct cxl_cper_event_rec *rec = - acpi_hest_get_payload(gdata); - - cxl_cper_post_event(CXL_CPER_EVENT_MEM_MODULE, rec); } else { void *err = acpi_hest_get_payload(gdata); diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c index 233e7c42c161..2ff361e756d6 100644 --- a/drivers/cxl/pci.c +++ b/drivers/cxl/pci.c @@ -974,61 +974,6 @@ static struct pci_driver cxl_pci_driver = { }, }; -#define CXL_EVENT_HDR_FLAGS_REC_SEVERITY GENMASK(1, 0) -static void cxl_cper_event_call(enum cxl_event_type ev_type, - struct cxl_cper_event_rec *rec) -{ - struct cper_cxl_event_devid *device_id = &rec->hdr.device_id; - struct pci_dev *pdev __free(pci_dev_put) = NULL; - enum cxl_event_log_type log_type; - struct cxl_dev_state *cxlds; - unsigned int devfn; - u32 hdr_flags; - - devfn = PCI_DEVFN(device_id->device_num, device_id->func_num); - pdev = pci_get_domain_bus_and_slot(device_id->segment_num, - device_id->bus_num, devfn); - if (!pdev) - return; - - guard(pci_dev)(pdev); - if (pdev->driver != &cxl_pci_driver) - return; - - cxlds = pci_get_drvdata(pdev); - if (!cxlds) - return; - - /* Fabricate a log type */ - hdr_flags = get_unaligned_le24(rec->event.generic.hdr.flags); - log_type = FIELD_GET(CXL_EVENT_HDR_FLAGS_REC_SEVERITY, hdr_flags); - - cxl_event_trace_record(cxlds->cxlmd, log_type, ev_type, - &uuid_null, &rec->event); -} - -static int __init cxl_pci_driver_init(void) -{ - int rc; - - rc = cxl_cper_register_callback(cxl_cper_event_call); - if (rc) - return rc; - - rc = pci_register_driver(&cxl_pci_driver); - if (rc) - cxl_cper_unregister_callback(cxl_cper_event_call); - - return rc; -} - -static void __exit cxl_pci_driver_exit(void) -{ - pci_unregister_driver(&cxl_pci_driver); - cxl_cper_unregister_callback(cxl_cper_event_call); -} - -module_init(cxl_pci_driver_init); -module_exit(cxl_pci_driver_exit); +module_pci_driver(cxl_pci_driver); MODULE_LICENSE("GPL v2"); MODULE_IMPORT_NS(CXL); diff --git a/include/linux/cxl-event.h b/include/linux/cxl-event.h index 91125eca4c8a..03fa6d50d46f 100644 --- a/include/linux/cxl-event.h +++ b/include/linux/cxl-event.h @@ -140,22 +140,4 @@ struct cxl_cper_event_rec { union cxl_event event; } __packed; -typedef void (*cxl_cper_callback)(enum cxl_event_type type, - struct cxl_cper_event_rec *rec); - -#ifdef CONFIG_ACPI_APEI_GHES -int cxl_cper_register_callback(cxl_cper_callback callback); -int cxl_cper_unregister_callback(cxl_cper_callback callback); -#else -static inline int cxl_cper_register_callback(cxl_cper_callback callback) -{ - return 0; -} - -static inline int cxl_cper_unregister_callback(cxl_cper_callback callback) -{ - return 0; -} -#endif - #endif /* _LINUX_CXL_EVENT_H */ -- cgit v1.2.3