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2016-12-04Linux 4.9-rc8v4.9-rc8Linus Torvalds
2016-12-03Merge tag 'drm-fixes-for-v4.9-rc8' of ↵Linus Torvalds
git://people.freedesktop.org/~airlied/linux Pull drm fixes from Dave Airlie: "A pretty small pull request: a couple of AMD powerxpress regression fixes and a power management fix, a couple of i915 fixes and one hdlcd fix, along with one core don't oops because of incorrect API usage fix" * tag 'drm-fixes-for-v4.9-rc8' of git://people.freedesktop.org/~airlied/linux: drm/i915: drop the struct_mutex when wedged or trying to reset drm/i915: Don't touch NULL sg on i915_gem_object_get_pages_gtt() error drm: Don't call drm_for_each_crtc with a non-KMS driver drm/radeon: fix check for port PM availability drm/amdgpu: fix check for port PM availability drm/amd/powerplay: initialize the soft_regs offset in struct smu7_hwmgr drm: hdlcd: Fix cleanup order
2016-12-04Merge tag 'drm-intel-fixes-2016-12-01' of ↵Dave Airlie
git://anongit.freedesktop.org/git/drm-intel into drm-fixes 2 intel fixes. * tag 'drm-intel-fixes-2016-12-01' of git://anongit.freedesktop.org/git/drm-intel: drm/i915: drop the struct_mutex when wedged or trying to reset drm/i915: Don't touch NULL sg on i915_gem_object_get_pages_gtt() error
2016-12-02Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge more fixes from Andrew Morton: "2 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm, vmscan: add cond_resched() into shrink_node_memcg() mm: workingset: fix NULL ptr in count_shadow_nodes
2016-12-02mm, vmscan: add cond_resched() into shrink_node_memcg()Michal Hocko
Boris Zhmurov has reported RCU stalls during the kswapd reclaim: INFO: rcu_sched detected stalls on CPUs/tasks: 23-...: (22 ticks this GP) idle=92f/140000000000000/0 softirq=2638404/2638404 fqs=23 (detected by 4, t=6389 jiffies, g=786259, c=786258, q=42115) Task dump for CPU 23: kswapd1 R running task 0 148 2 0x00000008 Call Trace: shrink_node+0xd2/0x2f0 kswapd+0x2cb/0x6a0 mem_cgroup_shrink_node+0x160/0x160 kthread+0xbd/0xe0 __switch_to+0x1fa/0x5c0 ret_from_fork+0x1f/0x40 kthread_create_on_node+0x180/0x180 a closer code inspection has shown that we might indeed miss all the scheduling points in the reclaim path if no pages can be isolated from the LRU list. This is a pathological case but other reports from Donald Buczek have shown that we might indeed hit such a path: clusterd-989 [009] .... 118023.654491: mm_vmscan_direct_reclaim_end: nr_reclaimed=193 kswapd1-86 [001] dN.. 118023.987475: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239830 nr_taken=0 file=1 kswapd1-86 [001] dN.. 118024.320968: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239844 nr_taken=0 file=1 kswapd1-86 [001] dN.. 118024.654375: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239858 nr_taken=0 file=1 kswapd1-86 [001] dN.. 118024.987036: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239872 nr_taken=0 file=1 kswapd1-86 [001] dN.. 118025.319651: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239886 nr_taken=0 file=1 kswapd1-86 [001] dN.. 118025.652248: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239900 nr_taken=0 file=1 kswapd1-86 [001] dN.. 118025.984870: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4239914 nr_taken=0 file=1 [...] kswapd1-86 [001] dN.. 118084.274403: mm_vmscan_lru_isolate: isolate_mode=0 classzone=0 order=0 nr_requested=32 nr_scanned=4241133 nr_taken=0 file=1 this is minute long snapshot which didn't take a single page from the LRU. It is not entirely clear why only 1303 pages have been scanned during that time (maybe there was a heavy IRQ activity interfering). In any case it looks like we can really hit long periods without scheduling on non preemptive kernels so an explicit cond_resched() in shrink_node_memcg which is independent on the reclaim operation is due. Link: http://lkml.kernel.org/r/20161202095841.16648-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Reported-by: Boris Zhmurov <bb@kernelpanic.ru> Tested-by: Boris Zhmurov <bb@kernelpanic.ru> Reported-by: Donald Buczek <buczek@molgen.mpg.de> Reported-by: "Christopher S. Aker" <caker@theshore.net> Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-02mm: workingset: fix NULL ptr in count_shadow_nodesMichal Hocko
Commit 0a6b76dd23fa ("mm: workingset: make shadow node shrinker memcg aware") has made the workingset shadow nodes shrinker memcg aware. The implementation is not correct though because memcg_kmem_enabled() might become true while we are doing a global reclaim when the sc->memcg might be NULL which is exactly what Marek has seen: BUG: unable to handle kernel NULL pointer dereference at 0000000000000400 IP: [<ffffffff8122d520>] mem_cgroup_node_nr_lru_pages+0x20/0x40 PGD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 60 Comm: kswapd0 Tainted: G O 4.8.10-12.pvops.qubes.x86_64 #1 task: ffff880011863b00 task.stack: ffff880011868000 RIP: mem_cgroup_node_nr_lru_pages+0x20/0x40 RSP: e02b:ffff88001186bc70 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88001186bd20 RCX: 0000000000000002 RDX: 000000000000000c RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88001186bc70 R08: 28f5c28f5c28f5c3 R09: 0000000000000000 R10: 0000000000006c34 R11: 0000000000000333 R12: 00000000000001f6 R13: ffffffff81c6f6a0 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff880013c00000(0000) knlGS:ffff880013d00000 CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000400 CR3: 00000000122f2000 CR4: 0000000000042660 Call Trace: count_shadow_nodes+0x9a/0xa0 shrink_slab.part.42+0x119/0x3e0 shrink_node+0x22c/0x320 kswapd+0x32c/0x700 kthread+0xd8/0xf0 ret_from_fork+0x1f/0x40 Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 3b 35 dd eb b1 00 55 48 89 e5 73 2c 89 d2 31 c9 31 c0 4c 63 ce 48 0f a3 ca 73 13 <4a> 8b b4 cf 00 04 00 00 41 89 c8 4a 03 84 c6 80 00 00 00 83 c1 RIP mem_cgroup_node_nr_lru_pages+0x20/0x40 RSP <ffff88001186bc70> CR2: 0000000000000400 ---[ end trace 100494b9edbdfc4d ]--- This patch fixes the issue by checking sc->memcg rather than memcg_kmem_enabled() which is sufficient because shrink_slab makes sure that only memcg aware shrinkers will get non-NULL memcgs and only if memcg_kmem_enabled is true. Fixes: 0a6b76dd23fa ("mm: workingset: make shadow node shrinker memcg aware") Link: http://lkml.kernel.org/r/20161201132156.21450-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Reported-by: Marek Marczykowski-Górecki <marmarek@mimuw.edu.pl> Tested-by: Marek Marczykowski-Górecki <marmarek@mimuw.edu.pl> Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Balbir Singh <bsingharora@gmail.com> Cc: <stable@vger.kernel.org> [4.6+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-02kbuild: fix building bzImage with CONFIG_TRIM_UNUSED_KSYMS enabledNicolas Pitre
When building a specific target such as bzImage, modules aren't normally built. However if CONFIG_TRIM_UNUSED_KSYMS is enabled, no built modules means none of the exported symbols are used and therefore they will all be trimmed away from the final kernel. A subsequent "make modules" will fail because modpost cannot find the needed symbols for those modules in the kernel binary. Let's make sure modules are also built whenever CONFIG_TRIM_UNUSED_KSYMS is enabled and that the kernel binary is properly rebuilt accordingly. Signed-off-by: Nicolas Pitre <nico@linaro.org> Tested-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-02Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Arnd Bergmann: "This should be the last set of bugfixes for arm-soc in v4.9. None of these are critical regressions, but it would be nice to still get them merged. - On the Juno platform, the idle latency was described wrong, leading to suboptimal cpuidle tuning. - Also on the same platform, PCI I/O space was set up incorrectly and could not work. - On the sti platform, a syntactically incorrect DT entry caused warnings. - The newly added 'gr8' platform has somewhat confusing file names, which we rename for consistency" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm64: dts: juno: fix cluster sleep state entry latency on all SoC versions arm64: dts: juno: Correct PCI IO window ARM: dts: STiH407-family: fix i2c nodes ARM: gr8: Rename the DTSI and relevant DTS
2016-12-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Lots more phydev and probe error path leaks in various drivers by Johan Hovold. 2) Fix race in packet_set_ring(), from Philip Pettersson. 3) Use after free in dccp_invalid_packet(), from Eric Dumazet. 4) Signnedness overflow in SO_{SND,RCV}BUFFORCE, also from Eric Dumazet. 5) When tunneling between ipv4 and ipv6 we can be left with the wrong skb->protocol value as we enter the IPSEC engine and this causes all kinds of problems. Set it before the output path does any dst_output() calls, from Eli Cooper. 6) bcmgenet uses wrong device struct pointer in DMA API calls, fix from Florian Fainelli. 7) Various netfilter nat bug fixes from FLorian Westphal. 8) Fix memory leak in ipvlan_link_new(), from Gao Feng. 9) Locking fixes, particularly wrt. socket lookups, in l2tp from Guillaume Nault. 10) Avoid invoking rhash teardowns in atomic context by moving netlink cb->done() dump completion from a worker thread. Fix from Herbert Xu. 11) Buffer refcount problems in tun and macvtap on errors, from Jason Wang. 12) We don't set Kconfig symbol DEFAULT_TCP_CONG properly when the user selects BBR. Fix from Julian Wollrath. 13) Fix deadlock in transmit path on altera TSE driver, from Lino Sanfilippo. 14) Fix unbalanced reference counting in dsa_switch_tree, from Nikita Yushchenko. 15) tc_tunnel_key needs to be properly exported to userspace via uapi, fix from Roi Dayan. 16) rds_tcp_init_net() doesn't unregister notifier in error path, fix from Sowmini Varadhan. 17) Stale packet header pointer access after pskb_expand_head() in genenve driver, fix from Sabrina Dubroca. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits) net: avoid signed overflows for SO_{SND|RCV}BUFFORCE geneve: avoid use-after-free of skb->data tipc: check minimum bearer MTU net: renesas: ravb: unintialized return value sh_eth: remove unchecked interrupts for RZ/A1 net: bcmgenet: Utilize correct struct device for all DMA operations NET: usb: qmi_wwan: add support for Telit LE922A PID 0x1040 cdc_ether: Fix handling connection notification ip6_offload: check segs for NULL in ipv6_gso_segment. RDS: TCP: unregister_netdevice_notifier() in error path of rds_tcp_init_net Revert: "ip6_tunnel: Update skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit()" ipv6: Set skb->protocol properly for local output ipv4: Set skb->protocol properly for local output packet: fix race condition in packet_set_ring net: ethernet: altera: TSE: do not use tx queue lock in tx completion handler net: ethernet: altera: TSE: Remove unneeded dma sync for tx buffers net: ethernet: stmmac: fix of-node and fixed-link-phydev leaks net: ethernet: stmmac: platform: fix outdated function header net: ethernet: stmmac: dwmac-meson8b: fix probe error path net: ethernet: stmmac: dwmac-generic: fix probe error path ...
2016-12-02net: avoid signed overflows for SO_{SND|RCV}BUFFORCEEric Dumazet
CAP_NET_ADMIN users should not be allowed to set negative sk_sndbuf or sk_rcvbuf values, as it can lead to various memory corruptions, crashes, OOM... Note that before commit 82981930125a ("net: cleanups in sock_setsockopt()"), the bug was even more serious, since SO_SNDBUF and SO_RCVBUF were vulnerable. This needs to be backported to all known linux kernels. Again, many thanks to syzkaller team for discovering this gem. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02geneve: avoid use-after-free of skb->dataSabrina Dubroca
geneve{,6}_build_skb can end up doing a pskb_expand_head(), which makes the ip_hdr(skb) reference we stashed earlier stale. Since it's only needed as an argument to ip_tunnel_ecn_encap(), move this directly in the function call. Fixes: 08399efc6319 ("geneve: ensure ECN info is handled properly in all tx/rx paths") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02tipc: check minimum bearer MTUMichal Kubeček
Qian Zhang (张谦) reported a potential socket buffer overflow in tipc_msg_build() which is also known as CVE-2016-8632: due to insufficient checks, a buffer overflow can occur if MTU is too short for even tipc headers. As anyone can set device MTU in a user/net namespace, this issue can be abused by a regular user. As agreed in the discussion on Ben Hutchings' original patch, we should check the MTU at the moment a bearer is attached rather than for each processed packet. We also need to repeat the check when bearer MTU is adjusted to new device MTU. UDP case also needs a check to avoid overflow when calculating bearer MTU. Fixes: b97bf3fd8f6a ("[TIPC] Initial merge") Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reported-by: Qian Zhang (张谦) <zhangqian-c@360.cn> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02Merge tag 'linux-can-fixes-for-4.9-20161201' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2016-12-02 this is a pull request for net/master. There are two patches by Stephane Grosjean, who adds support for the new PCAN-USB X6 USB interface to the pcan_usb driver. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: renesas: ravb: unintialized return valueDan Carpenter
We want to set the other "err" variable here so that we can return it later. My version of GCC misses this issue but I caught it with a static checker. Fixes: 9f70eb339f52 ("net: ethernet: renesas: ravb: fix fixed-link phydev leaks") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02sh_eth: remove unchecked interrupts for RZ/A1Chris Brandt
When streaming a lot of data and the RZ/A1 can't keep up, some status bits will get set that are not being checked or cleared which cause the following messages and the Ethernet driver to stop working. This patch fixes that issue. irq 21: nobody cared (try booting with the "irqpoll" option) handlers: [<c036b71c>] sh_eth_interrupt Disabling IRQ #21 Fixes: db893473d313a4ad ("sh_eth: Add support for r7s72100") Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: bcmgenet: Utilize correct struct device for all DMA operationsFlorian Fainelli
__bcmgenet_tx_reclaim() and bcmgenet_free_rx_buffers() are not using the same struct device during unmap that was used for the map operation, which makes DMA-API debugging warn about it. Fix this by always using &priv->pdev->dev throughout the driver, using an identical device reference for all map/unmap calls. Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02Fix up a couple of field names in the CREDITS fileLinus Torvalds
Ozgur Karatas reported that the very first entry in the CREDITS file had the wrong tag for name (M: instead of N: - it happened when moving the entry from the MAINTAINERS file, where 'M:' stands for "Maintainer"). And when I went looking, I found a couple of other cases of wrong tagging too. Reported-by: Ozgur Karatas <mueddib@yandex.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-02NET: usb: qmi_wwan: add support for Telit LE922A PID 0x1040Daniele Palmas
This patch adds support for PID 0x1040 of Telit LE922A. The qmi adapter requires to have DTR set for proper working, so QMI_WWAN_QUIRK_DTR has been enabled. Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02cdc_ether: Fix handling connection notificationKristian Evensen
Commit bfe9b9d2df66 ("cdc_ether: Improve ZTE MF823/831/910 handling") introduced a work-around in usbnet_cdc_status() for devices that exported cdc carrier on twice on connect. Before the commit, this behavior caused the link state to be incorrect. It was assumed that all CDC Ethernet devices would either export this behavior, or send one off and then one on notification (which seems to be the default behavior). Unfortunately, it turns out multiple devices sends a connection notification multiple times per second (via an interrupt), even when connection state does not change. This has been observed with several different USB LAN dongles (at least), for example 13b1:0041 (Linksys). After bfe9b9d2df66, the link state has been set as down and then up for each notification. This has caused a flood of Netlink NEWLINK messages and syslog to be flooded with messages similar to: cdc_ether 2-1:2.0 eth1: kevent 12 may have been dropped This commit fixes the behavior by reverting usbnet_cdc_status() to how it was before bfe9b9d2df66. The work-around has been moved to a separate status-function which is only called when a known, affect device is detected. v1->v2: * Do not open-code netif_carrier_ok() (thanks Henning Schild). * Call netif_carrier_off() instead of usb_link_change(). This prevents calling schedule_work() twice without giving the work queue a chance to be processed (thanks Bjørn Mork). Fixes: bfe9b9d2df66 ("cdc_ether: Improve ZTE MF823/831/910 handling") Reported-by: Henning Schild <henning.schild@siemens.com> Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02ip6_offload: check segs for NULL in ipv6_gso_segment.Artem Savkov
segs needs to be checked for being NULL in ipv6_gso_segment() before calling skb_shinfo(segs), otherwise kernel can run into a NULL-pointer dereference: [ 97.811262] BUG: unable to handle kernel NULL pointer dereference at 00000000000000cc [ 97.819112] IP: [<ffffffff816e52f9>] ipv6_gso_segment+0x119/0x2f0 [ 97.825214] PGD 0 [ 97.827047] [ 97.828540] Oops: 0000 [#1] SMP [ 97.831678] Modules linked in: vhost_net vhost macvtap macvlan nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bridge stp llc snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_codec edac_mce_amd snd_hda_core edac_core snd_hwdep kvm_amd snd_seq kvm snd_seq_device snd_pcm irqbypass snd_timer ppdev parport_serial snd parport_pc k10temp pcspkr soundcore parport sp5100_tco shpchp sg wmi i2c_piix4 acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sr_mod cdrom sd_mod ata_generic pata_acpi amdkfd amd_iommu_v2 radeon broadcom bcm_phy_lib i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm ahci serio_raw tg3 firewire_ohci libahci pata_atiixp drm ptp libata firewire_core pps_core i2c_core crc_itu_t fjes dm_mirror dm_region_hash dm_log dm_mod [ 97.927721] CPU: 1 PID: 3504 Comm: vhost-3495 Not tainted 4.9.0-7.el7.test.x86_64 #1 [ 97.935457] Hardware name: AMD Snook/Snook, BIOS ESK0726A 07/26/2010 [ 97.941806] task: ffff880129a1c080 task.stack: ffffc90001bcc000 [ 97.947720] RIP: 0010:[<ffffffff816e52f9>] [<ffffffff816e52f9>] ipv6_gso_segment+0x119/0x2f0 [ 97.956251] RSP: 0018:ffff88012fc43a10 EFLAGS: 00010207 [ 97.961557] RAX: 0000000000000000 RBX: ffff8801292c8700 RCX: 0000000000000594 [ 97.968687] RDX: 0000000000000593 RSI: ffff880129a846c0 RDI: 0000000000240000 [ 97.975814] RBP: ffff88012fc43a68 R08: ffff880129a8404e R09: 0000000000000000 [ 97.982942] R10: 0000000000000000 R11: ffff880129a84076 R12: 00000020002949b3 [ 97.990070] R13: ffff88012a580000 R14: 0000000000000000 R15: ffff88012a580000 [ 97.997198] FS: 0000000000000000(0000) GS:ffff88012fc40000(0000) knlGS:0000000000000000 [ 98.005280] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.011021] CR2: 00000000000000cc CR3: 0000000126c5d000 CR4: 00000000000006e0 [ 98.018149] Stack: [ 98.020157] 00000000ffffffff ffff88012fc43ac8 ffffffffa017ad0a 000000000000000e [ 98.027584] 0000001300000000 0000000077d59998 ffff8801292c8700 00000020002949b3 [ 98.035010] ffff88012a580000 0000000000000000 ffff88012a580000 ffff88012fc43a98 [ 98.042437] Call Trace: [ 98.044879] <IRQ> [ 98.046803] [<ffffffffa017ad0a>] ? tg3_start_xmit+0x84a/0xd60 [tg3] [ 98.053156] [<ffffffff815eeee0>] skb_mac_gso_segment+0xb0/0x130 [ 98.059158] [<ffffffff815eefd3>] __skb_gso_segment+0x73/0x110 [ 98.064985] [<ffffffff815ef40d>] validate_xmit_skb+0x12d/0x2b0 [ 98.070899] [<ffffffff815ef5d2>] validate_xmit_skb_list+0x42/0x70 [ 98.077073] [<ffffffff81618560>] sch_direct_xmit+0xd0/0x1b0 [ 98.082726] [<ffffffff815efd86>] __dev_queue_xmit+0x486/0x690 [ 98.088554] [<ffffffff8135c135>] ? cpumask_next_and+0x35/0x50 [ 98.094380] [<ffffffff815effa0>] dev_queue_xmit+0x10/0x20 [ 98.099863] [<ffffffffa09ce057>] br_dev_queue_push_xmit+0xa7/0x170 [bridge] [ 98.106907] [<ffffffffa09ce161>] br_forward_finish+0x41/0xc0 [bridge] [ 98.113430] [<ffffffff81627cf2>] ? nf_iterate+0x52/0x60 [ 98.118735] [<ffffffff81627d6b>] ? nf_hook_slow+0x6b/0xc0 [ 98.124216] [<ffffffffa09ce32c>] __br_forward+0x14c/0x1e0 [bridge] [ 98.130480] [<ffffffffa09ce120>] ? br_dev_queue_push_xmit+0x170/0x170 [bridge] [ 98.137785] [<ffffffffa09ce4bd>] br_forward+0x9d/0xb0 [bridge] [ 98.143701] [<ffffffffa09cfbb7>] br_handle_frame_finish+0x267/0x560 [bridge] [ 98.150834] [<ffffffffa09d0064>] br_handle_frame+0x174/0x2f0 [bridge] [ 98.157355] [<ffffffff8102fb89>] ? sched_clock+0x9/0x10 [ 98.162662] [<ffffffff810b63b2>] ? sched_clock_cpu+0x72/0xa0 [ 98.168403] [<ffffffff815eccf5>] __netif_receive_skb_core+0x1e5/0xa20 [ 98.174926] [<ffffffff813659f9>] ? timerqueue_add+0x59/0xb0 [ 98.180580] [<ffffffff815ed548>] __netif_receive_skb+0x18/0x60 [ 98.186494] [<ffffffff815ee625>] process_backlog+0x95/0x140 [ 98.192145] [<ffffffff815edccd>] net_rx_action+0x16d/0x380 [ 98.197713] [<ffffffff8170cff1>] __do_softirq+0xd1/0x283 [ 98.203106] [<ffffffff8170b2bc>] do_softirq_own_stack+0x1c/0x30 [ 98.209107] <EOI> [ 98.211029] [<ffffffff8108a5c0>] do_softirq+0x50/0x60 [ 98.216166] [<ffffffff815ec853>] netif_rx_ni+0x33/0x80 [ 98.221386] [<ffffffffa09eeff7>] tun_get_user+0x487/0x7f0 [tun] [ 98.227388] [<ffffffffa09ef3ab>] tun_sendmsg+0x4b/0x60 [tun] [ 98.233129] [<ffffffffa0b68932>] handle_tx+0x282/0x540 [vhost_net] [ 98.239392] [<ffffffffa0b68c25>] handle_tx_kick+0x15/0x20 [vhost_net] [ 98.245916] [<ffffffffa0abacfe>] vhost_worker+0x9e/0xf0 [vhost] [ 98.251919] [<ffffffffa0abac60>] ? vhost_umem_alloc+0x40/0x40 [vhost] [ 98.258440] [<ffffffff81003a47>] ? do_syscall_64+0x67/0x180 [ 98.264094] [<ffffffff810a44d9>] kthread+0xd9/0xf0 [ 98.268965] [<ffffffff810a4400>] ? kthread_park+0x60/0x60 [ 98.274444] [<ffffffff8170a4d5>] ret_from_fork+0x25/0x30 [ 98.279836] Code: 8b 93 d8 00 00 00 48 2b 93 d0 00 00 00 4c 89 e6 48 89 df 66 89 93 c2 00 00 00 ff 10 48 3d 00 f0 ff ff 49 89 c2 0f 87 52 01 00 00 <41> 8b 92 cc 00 00 00 48 8b 80 d0 00 00 00 44 0f b7 74 10 06 66 [ 98.299425] RIP [<ffffffff816e52f9>] ipv6_gso_segment+0x119/0x2f0 [ 98.305612] RSP <ffff88012fc43a10> [ 98.309094] CR2: 00000000000000cc [ 98.312406] ---[ end trace 726a2c7a2d2d78d0 ]--- Signed-off-by: Artem Savkov <asavkov@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02RDS: TCP: unregister_netdevice_notifier() in error path of rds_tcp_init_netSowmini Varadhan
If some error is encountered in rds_tcp_init_net, make sure to unregister_netdevice_notifier(), else we could trigger a panic later on, when the modprobe from a netns fails. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02Revert: "ip6_tunnel: Update skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit()"Eli Cooper
This reverts commit ae148b085876fa771d9ef2c05f85d4b4bf09ce0d ("ip6_tunnel: Update skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit()"). skb->protocol is now set in __ip_local_out() and __ip6_local_out() before dst_output() is called. It is no longer necessary to do it for each tunnel. Cc: stable@vger.kernel.org Signed-off-by: Eli Cooper <elicooper@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02ipv6: Set skb->protocol properly for local outputEli Cooper
When xfrm is applied to TSO/GSO packets, it follows this path: xfrm_output() -> xfrm_output_gso() -> skb_gso_segment() where skb_gso_segment() relies on skb->protocol to function properly. This patch sets skb->protocol to ETH_P_IPV6 before dst_output() is called, fixing a bug where GSO packets sent through an ipip6 tunnel are dropped when xfrm is involved. Cc: stable@vger.kernel.org Signed-off-by: Eli Cooper <elicooper@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02ipv4: Set skb->protocol properly for local outputEli Cooper
When xfrm is applied to TSO/GSO packets, it follows this path: xfrm_output() -> xfrm_output_gso() -> skb_gso_segment() where skb_gso_segment() relies on skb->protocol to function properly. This patch sets skb->protocol to ETH_P_IP before dst_output() is called, fixing a bug where GSO packets sent through a sit tunnel are dropped when xfrm is involved. Cc: stable@vger.kernel.org Signed-off-by: Eli Cooper <elicooper@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02packet: fix race condition in packet_set_ringPhilip Pettersson
When packet_set_ring creates a ring buffer it will initialize a struct timer_list if the packet version is TPACKET_V3. This value can then be raced by a different thread calling setsockopt to set the version to TPACKET_V1 before packet_set_ring has finished. This leads to a use-after-free on a function pointer in the struct timer_list when the socket is closed as the previously initialized timer will not be deleted. The bug is fixed by taking lock_sock(sk) in packet_setsockopt when changing the packet version while also taking the lock at the start of packet_set_ring. Fixes: f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation.") Signed-off-by: Philip Pettersson <philip.pettersson@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "All architectures avoid memory corruption in an error path. ARM prevents bogus acknowledgement of interrupts" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: use after free in kvm_ioctl_create_device() KVM: arm/arm64: vgic: Don't notify EOI for non-SPIs
2016-12-02Merge branch 'i2c/for-current' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fix from Wolfram Sang: "Here is the revert for the regression of the i2c-octeon driver I mentioned last time. I wished for a bit more feedback, but all people working actively on it are in need of this patch, so here it goes" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: Revert "i2c: octeon: thunderx: Limit register access retries"
2016-12-02net: ethernet: altera: TSE: do not use tx queue lock in tx completion handlerLino Sanfilippo
The driver already uses its private lock for synchronization between xmit and xmit completion handler making the additional use of the xmit_lock unnecessary. Furthermore the driver does not set NETIF_F_LLTX resulting in xmit to be called with the xmit_lock held and then taking the private lock while xmit completion handler does the reverse, first take the private lock, then the xmit_lock. Fix these issues by not taking the xmit_lock in the tx completion handler. Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: altera: TSE: Remove unneeded dma sync for tx buffersLino Sanfilippo
An explicit dma sync for device directly after mapping as well as an explicit dma sync for cpu directly before unmapping is unnecessary and costly on the hotpath. So remove these calls. Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02default exported asm symbols to zeroArnd Bergmann
With binutils-2.26 and before, a weak missing symbol was kept during the final link, and a missing CRC for an export would lead to that CRC being treated as zero implicitly. With binutils-2.27, the crc symbol gets dropped, and any module trying to use it will fail to load. This sets the weak CRC symbol to zero explicitly, making it defined in vmlinux, which in turn lets us load the modules referring to that CRC. The comment above the __CRC_SYMBOL macro suggests that this was always the intention, although it also seems that all symbols defined in C have a correct CRC these days, and only the exports that are now done in assembly need this. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Adam Borowski <kilobyte@angband.pl> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-02arm64: dts: juno: fix cluster sleep state entry latency on all SoC versionsSudeep Holla
The core and the cluster sleep state entry latencies can't be same as cluster sleep involves more work compared to core level e.g. shared cache maintenance. Experiments have shown on an average about 100us more latency for the cluster sleep state compared to the core level sleep. This patch fixes the entry latency for the cluster sleep state. Fixes: 28e10a8f3a03 ("arm64: dts: juno: Add idle-states to device tree") Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: "Jon Medhurst (Tixy)" <tixy@linaro.org> Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-12-02Merge branch 'stmmac-probe-error-handling-and-phydev-leaks'David S. Miller
Johan Hovold says: ==================== net: stmmac: fix probe error handling and phydev leaks This series fixes a number of issues with the stmmac-driver probe error handling, which for example left clocks enabled after probe failures. The final patch fixes a failure to deregister and free any fixed-link PHYs that were registered during probe on probe errors and on driver unbind. It also fixes a related of-node leak on late probe errors. This series depends on the of_phy_deregister_fixed_link() helper that was just merged to net. As mentioned earlier, one staging driver also suffers from a similar leak and can be fixed up once the above mentioned helper hits mainline. Note that these patches have only been compile tested. ==================== Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: fix of-node and fixed-link-phydev leaksJohan Hovold
Make sure to deregister and free any fixed-link phy registered during probe on probe errors and on driver unbind by adding a new glue helper function. Drop the of-node reference taken in the same path also on late probe errors (and not just on driver unbind) by moving the put from stmmac_dvr_remove() to the new helper. Fixes: 277323814e49 ("stmmac: add fixed-link device-tree support") Fixes: 4613b279bee7 ("ethernet: stmicro: stmmac: add missing of_node_put after calling of_parse_phandle") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: platform: fix outdated function headerJohan Hovold
Fix the OF-helper function header to reflect that the function no longer has a platform-data parameter. Fixes: b0003ead75f3 ("stmmac: make stmmac_probe_config_dt return the platform data struct") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-meson8b: fix probe error pathJohan Hovold
Make sure to disable clocks before returning on late probe errors. Fixes: 566e82516253 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC") Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-generic: fix probe error pathJohan Hovold
Make sure to call any exit() callback to undo the effect of init() before returning on late probe errors. Fixes: cf3f047b9af4 ("stmmac: move hw init in the probe (v2)") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-rk: fix probe error pathJohan Hovold
Make sure to disable runtime PM, power down the PHY, and disable clocks before returning on late probe errors. Fixes: 27ffefd2d109 ("stmmac: dwmac-rk: create a new probe function") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-sti: fix probe error pathJohan Hovold
Make sure to disable clocks before returning on late probe errors. Fixes: 8387ee21f972 ("stmmac: dwmac-sti: turn setup callback into a probe function") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net: ethernet: stmmac: dwmac-socfpga: fix use-after-free on probe errorsJohan Hovold
Make sure to call stmmac_dvr_remove() before returning on late probe errors so that memory is freed, clocks are disabled, and the netdev is deregistered before its resources go away. Fixes: 3c201b5a84ed ("net: stmmac: socfpga: Remove re-registration of reset controller") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-02net/rtnetlink: fix attribute name in nlmsg_size() commentsTobias Klauser
Use the correct attribute constant names IFLA_GSO_MAX_{SEGS,SIZE} instead of IFLA_MAX_GSO_{SEGS,SIZE} for the comments int nlmsg_size(). Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01Merge tag 'pci-v4.9-fixes-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "PCI fixes: - Fix Read Completion Boundary setting, which fixes a boot failure on IBM x3850 with Mellanox MT27500 ConnectX-3 - Update some MAINTAINERS entries and email addresses" * tag 'pci-v4.9-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Set Read Completion Boundary to 128 iff Root Port supports it (_HPX) PCI: Export pcie_find_root_port PCI: designware-plat: Update author email PCI: designware: Change maintainer to Joao Pinto MAINTAINERS: Add devicetree binding to PCI i.MX6 entry MAINTAINERS: Update Richard Zhu's email address
2016-12-01ixgbe/ixgbevf: Don't use lco_csum to compute IPv4 checksumAlexander Duyck
In the case of IPIP and SIT tunnel frames the outer transport header offset is actually set to the same offset as the inner transport header. This results in the lco_csum call not doing any checksum computation over the inner IPv4/v6 header data. In order to account for that I am updating the code so that we determine the location to start the checksum ourselves based on the location of the IPv4 header and the length. Fixes: b83e30104bd9 ("ixgbe/ixgbevf: Add support for GSO partial") Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01igb/igbvf: Don't use lco_csum to compute IPv4 checksumAlexander Duyck
In the case of IPIP and SIT tunnel frames the outer transport header offset is actually set to the same offset as the inner transport header. This results in the lco_csum call not doing any checksum computation over the inner IPv4/v6 header data. In order to account for that I am updating the code so that we determine the location to start the checksum ourselves based on the location of the IPv4 header and the length. Fixes: e10715d3e961 ("igb/igbvf: Add support for GSO partial") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01net: asix: Fix AX88772_suspend() USB vendor commands failure issuesallan
The change fixes AX88772_suspend() USB vendor commands failure issues. Signed-off-by: Allan Chou <allan@asix.com.tw> Tested-by: Allan Chou <allan@asix.com.tw> Tested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01Merge branch 'overlayfs-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs fix from Miklos Szeredi: "This fixes a regression introduced in 4.8" * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: fix d_real() for stacked fs
2016-12-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input fixes from Dmitry Torokhov: "We are disabling automatic probing of BYD touchpads as it results in too many false positives, and the hardware is not terribly popular and having the protocol support does not result in significantly improved user experience. We also change keycode for KEY_DATA to avoid clashing with KEY_FASTREVERSE. Luckily this newish code is used by CEC framework that is still in staging, so it is extremely unlikely that someone has already started using this keycode" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: change KEY_DATA from 0x275 to 0x277 Input: psmouse - disable automatic probing of BYD touchpads
2016-12-01kbuild: make sure autoksyms.h exists earlyNicolas Pitre
Some people are able to trigger a race where autoksyms.h is used before its empty version is even created. Let's create it at the same time as the directory holding it is created. Signed-off-by: Nicolas Pitre <nico@linaro.org> Tested-by: Prarit Bhargava <prarit@redhat.com> Tested-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-01Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2016-12-01 1) Change the error value when someone tries to run 32bit userspace on a 64bit host from -ENOTSUPP to the userspace exported -EOPNOTSUPP. Fix from Yi Zhao. 2) On inbound, ESN sequence numbers are already in network byte order. So don't try to convert it again, this fixes integrity verification for ESN. Fixes from Tobias Brunner. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter fixes for net This is a large batch of Netfilter fixes for net, they are: 1) Three patches to fix NAT conversion to rhashtable: Switch to rhlist structure that allows to have several objects with the same key. Moreover, fix wrong comparison logic in nf_nat_bysource_cmp() as this is expecting a return value similar to memcmp(). Change location of the nat_bysource field in the nf_conn structure to avoid zeroing this as it breaks interaction with SLAB_DESTROY_BY_RCU and lead us to crashes. From Florian Westphal. 2) Don't allow malformed fragments go through in IPv6, drop them, otherwise we hit GPF, patch from Florian Westphal. 3) Fix crash if attributes are missing in nft_range, from Liping Zhang. 4) Fix arptables 32-bits userspace 64-bits kernel compat, from Hongxu Jia. 5) Two patches from David Ahern to fix netfilter interaction with vrf. From David Ahern. 6) Fix element timeout calculation in nf_tables, we take milliseconds from userspace, but we use jiffies from kernelspace. Patch from Anders K. Pedersen. 7) Missing validation length netlink attribute for nft_hash, from Laura Garcia. 8) Fix nf_conntrack_helper documentation, we don't default to off anymore for a bit of time so let's get this in sync with the code. I know is late but I think these are important, specifically the NAT bits, as they are mostly addressing fallout from recent changes. I also read there are chances to have -rc8, if that is the case, that would also give us a bit more time to test this. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01KVM: use after free in kvm_ioctl_create_device()Dan Carpenter
We should move the ops->destroy(dev) after the list_del(&dev->vm_node) so that we don't use "dev" after freeing it. Fixes: a28ebea2adc4 ("KVM: Protect device ops->create and list_add with kvm->lock") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>