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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Update to documents and code comments (Michael Kelley)
- Harden Vmbus (Kameron Carr)
- Rework MSHV driver page deposit logic (Mukesh Rathor)
- Vmbus kexec bug fix (Shradha Gupta)
- Miscellaneous bug fixes (Daehyeon Ko, Jiale Yao, Sasha Levin)
* tag 'hyperv-next-signed-20261028' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
Drivers: hv: Remove leftover support for old Hyper-V versions
mshv: Remove unused *_old memory deposit functions
mshv: Redesign hypervisor memory deposit logic
mshv: Rename memory deposit memory functions to _old
mshv_vtl: reject poll files with multiple waitqueues
mshv_vtl: detach poll waiter on POLLFREE
mshv_vtl: initialize poll file mutex before device registration
Documentation: hyperv: Update information on guest CPU offlining
Documentation: hyperv: Remove support for guests on Hyper-V 2012/2012R2
Drivers: hv: Run VMBus kexec cleanup from syscore shutdown
kexec: Add helper to report an active kexec reboot
tools: hv: remove unused rte_smp_mb()
Documentation: hyperv: Update documentation for sending VMBus packets
Drivers: hv: vmbus: Check ACPI companion before use
Documentation: hyperv: Describe validation of the ring buffer indices
Drivers: hv: vmbus: Keep the ring byte counts sane for a bad index
Drivers: hv: vmbus: Compute ring byte counts from a caller-held snapshot
Drivers: hv: vmbus: Use *_ONCE() to access shared ring buffer indices
Drivers: hv: vmbus: Bounds check the shared ring buffer indices
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
- Add support for crash hotplug
- Improve user copy performance on cores with fast misaligned accesses
- Optimize code paths involving pgtable_l{4,5}_enabled() by patching in
the return values during early boot (since these don't change during
runtime), or by specifying the return values directly in Kconfig
files (for purpose-built kernels)
- Change the PCIe bus reassignment behavior to depend on the
PCI_REASSIGN_ALL_BUS PCI flag (as ARM64 does)
- Avoid an unnecessary sstatus CSR read during context switch
- Make the sbi_ecall() macro variadic, improving code clarity
- Refactor __switch_to_vector() to prepare for upcoming vector context
switch optimizations
- Add a kselftest for vectorized user copy
- Add bounds checking on the shadow stack restore token address to
avoid it being used as an attack vector
- Fix the shadow stack and indirect branch landing pad control
functions to only update the CPU's envcfg CSR when operating on the
current task
- For MIPS RISC-V systems, add support for early boot-applied errata;
and for P8700 RISC-V systems, avoid WFI usage in the kernel (since it
is buggy)
- Add the "B" RISC-V ISA extension to hwcap and hwprobe reporting
- Add support for specifying and reporting the "Zic64b" RISC-V ISA
extension, and add it to the SpacemiT K1, K3, and Sophgo SG2044 DT
files
- Require the block size of cache management operations to be specified
in DT schema validation for the RISC-V ISA extensions Zicbom, Zicbop,
and Zicboz
- Some miscellaneous fixes: fix an incorrect bitfield width in the
RVG_SYSTEM_CSR_MASK bitmask macro; make RISCV_ALTERNATIVE mandatory,
now that XIP kernel support has been removed; and remove some
unnecessary includes in kernel/smp.c
* tag 'riscv-for-linus-7.4-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (28 commits)
riscv: mm: unexport _pgtable_l4_enabled and _pgtable_l5_enabled
riscv: introduce RISCV_ISA_SV48 and RISCV_ISA_SV57
riscv: support early isa ext and use it to optimize pgtable_l4|l5_enabled
riscv: convert pgtable_l4|l5_enabled to inline function
riscv: remove RISCV_ALTERNATIVE Kconfig option
riscv: Add a getter for user PMLEN support
riscv: dts: sophgo: sg2044: Add Zic64b ISA extension
riscv: dts: spacemit: k1: Add Zic64b ISA extension
riscv: dts: spacemit: k3: Add Zic64b ISA extension
riscv: Add Zic64b to cpufeature and hwprobe
dt-bindings: riscv: Add Zic64b extension description
dt-bindings: riscv: Require block-size for Zicbom, Zicbop, and Zicboz
riscv: Add B to hwcap and hwprobe
riscv: remove unused profile.h includes
riscv: cfi: Only write envcfg CSR when task is current
riscv: cfi: Bounds check restore token before swap
riscv: Add ERRATA_MIPS_P8700_WFI to replace WFI with mips.pause
selftest: riscv: test vectorized user copy
riscv: vector: refactor context switch for kernel-mode vector
riscv: do not read csr in vector context switch
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Pull bpf fixes from Alexei Starovoitov:
- Remove BPF_F_ARENA_SCALAR flag and .arena.data section in libbpf that
were added for rust-bpf in this merge window. We found a cleaner
approach that does it on compiler side instead of kernel/libbpf. No
released kernel has them (Alexei Starovoitov)
- Fix bpf_send_signal_task() returning -EPERM when it is called from a
kernel thread (Aditya Sharma)
- Various fixes (Alexei Starovoitov):
- Use emit_rsb_call() to call bpf_unwind_target() in x86 JIT to fix
objtool warning during the build
- Fix scalar evolution: clear delta of a widened register, don't
widen a pointer to a buffer, don't clamp a register whose type
changed in the loop, and reset the range of a clamped packet
pointer
- Finish the insn in the state that maybe_fork_scalars() splits
off, so that pruning doesn't drop it at the head of a counted
loop
- Preserve the registers that carry stack arguments across
arch_bpf_timed_may_goto() on x86-64, arm64 and riscv64
- Don't re-sort subprog_info[] for every new subprogram
- Fix flaky map_kptr and rcu_reentry selftests
- Use memmove() in bpf_skb_load_bytes(), bpf_skb_load_bytes_relative()
and bpf_xdp_load_bytes(), since the destination can be a slice of the
same packet (Ayushman Rout)
- Fixes and follow-ups for scalar evolution: reject pointer operands in
32-bit recurrences and latches, don't intersect with the current
register range on clamp to avoid a false 'verifier bug', avoid false
infinite loop reports, and recognize a 32-bit copy of the induction
variable (Eduard Zingerman)
- Fix out-of-bounds write to btf->types[] for split BTF and propagate
btf_add_type() errors in btf_check_all_metas() (Feng Yang)
- Fix use-after-free in bpf_timer callback that fires after its inner
map was freed (Mani Tofigh)
- Fix x86 JIT stopping before jumps converge: size backward jumps by
the insns they jump over (Mykyta Yatsenko)
- Fix use-after-free of struct_ops trampoline: dissociate struct_ops
progs before the grace period of the map (Qiliang Yuan)
- Validate stack argument reads against the caller state to fix
out-of-bounds read in the verifier, and reject callbacks with stack
arguments (Weiming Shi)
- Tie borrowed iterator results and pointers loaded from trusted fields
to the lifetime of their source, so that iterator next, destroy and
reference release invalidate them (Xu Yunxiang)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (48 commits)
bpf: Don't re-sort subprog_info[] for every new subprogram
bpf: Fix out-of-bounds btf->types write for split BTF
selftests/bpf: Test stack arguments across may_goto
bpf: Keep stack arguments in arch_bpf_timed_may_goto()
selftests/bpf: Test maybe_fork_scalars() at the head of a counted loop
bpf: Finish the insn in the state that maybe_fork_scalars() splits off
selftests/bpf: Test the clamp of pointers in scalar evolution
bpf: Reset the range of a packet pointer that scalar evolution clamps
bpf: Don't clamp a register whose type changed in the loop
selftests/bpf: Test a loop that moves a pointer to a buffer
bpf: Don't widen a pointer to a buffer in scalar evolution
selftests/bpf: Avoid a page fault in rcu_reentry while the handler is armed
selftests/bpf: Wait for the last maps of map_kptr to be freed
selftests/bpf: Test that a widened register is not linked
bpf: Clear delta of a register that scalar evolution widens
bpf, x86: Remove r0_on_stack from fetching atomics in arena
bpf: Remove BPF_F_ARENA_SCALAR
selftests/bpf: Remove tests for arena access through numbers
libbpf: Keep format strings of bpf_printk() in .rodata
libbpf: Remove .arena.data
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
"The usual updates for laptop quirks from HP, ASUS, Acer, Dell etc:
- new model names and recent CPU support
- more special button / function key handling
- battery and hardware monitoring quirks
Tool updates to intel-speed-select
WMI now supports non-x86 architectures
Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v7.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (237 commits)
platform/x86: asus-wmi: name the TUF keyboard RGB state and speed codes
platform/x86: asus-wmi: fix TUF keyboard power state shutdown naming
platform/x86: asus-wmi: rename TUF RGB state DEVID to _CMD
platform/x86: asus-armoury: add power limits quirk for GU605CM
platform/x86: asus-armoury: add power limits quirk for G533QS
platform/x86: asus-armoury: add power limits quirk for GA402NV
platform/x86: asus-armoury: add power limits quirk for FA608UP
platform/x86: asus-armoury: add power limits quirk for FA608UH
platform/x86: asus-armoury: add power limits quirk for FA608PM
platform/x86: asus-armoury: add power limits quirk for G713QR
platform/x86: ibm_rtl: Fix potential OOB read at signature search
platform/x86: acer-wmi: Add support for Acer Nitro AN16-41
platform/x86: acer-wmi: Cycle platform profile on mode key 0x4
platform/x86: hp-wmi: Disable hwmon attributes when no fans are usable
platform/x86: gpd pocket fan: Cancel work before releasing GPIOs
platform/x86: asus-armoury: Add XBOX ROG Ally X 20 Tunables
platform/x86: msi-wmi: Ignore WMI events for keys also handled by atkbd
platform/x86: msi-wmi: Sort scancodes numerically
platform: arm64: Add a driver for the EC found on ASUS Glymur machines
MAINTAINERS: Add myself as a LENOVO drivers co-maintainer
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git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull remoteproc updates from Bjorn Andersson:
- Add Qualcomm QMI Thermal Mitigation Device support for PAS-managed
remote processors, with cooling device bindings and configurations
for Hamoa, Kodiak, Lemans, Talos, Monaco, and Shikra CDSP and modem
subsystems as applicable.
- Add per-power-domain proxy performance states for Hawi CDSP and
update Hawi, Maili, and SDX75 PAS compatible bindings and the SDX75
device tree. Correct the Qualcomm ADSP startup timeout.
- Fetch auto-boot firmware only once and synchronize boot work with
device removal. Bound ELF section header accesses, improve trace
diagnostics, and update coredump configuration documentation.
- Set 48-bit DMA masks for TI K3 DSP and R5 remote processors, correct
mailbox message types, and enable compile testing for more TI
drivers. Fix i.MX address range boundary checks and DSP runtime PM
ordering, and simplify mailbox notification handling.
- Harden Xilinx mailbox setup and teardown and avoid sending
notifications when the transmit queue is full. Propagate STM32
optional IRQ lookup errors and correct the MediaTek MT8188 SCP
register binding.
* tag 'rproc-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: (33 commits)
remoteproc: qcom_q6v5_pas: Add QMI TMD cooling support for Shikra
remoteproc: virtio: Remove stray white space
remoteproc: virtio: Replace kmemdup with kmemdup_array
remoteproc: virtio: Add vdev_to_rsc() helper
remoteproc: core: Fetch the auto-boot firmware only once
remoteproc: xlnx: fix typecast warnings
remoteproc: qcom_q6v5_pas: enable QMI TMD cooling support
remoteproc: qcom: pas: add support for TMD thermal cooling devices
soc: qcom: Add QMI TMD support for remote thermal mitigation
dt-bindings: remoteproc: qcom,pas: add #cooling-cells property
remoteproc: qcom_q6v5_pas: add per-PD proxy performance states for Hawi CDSP
dt-bindings: remoteproc: qcom,sm8550-pas: make qcom,hawi-cdsp-pas standalone
arm64: dts: qcom: sdx75: Use SM8650 MPSS as fallback compatible
dt-bindings: remoteproc: qcom,sm8550-pas: Make SDX75 MPSS fallback to SM8650
dt-bindings: remoteproc: qcom,sm8550-pas: Add Hawi and Maili MPSS as SM8650 fallback
dt-bindings: remoteproc: Fix MT8188 SCP regs
remoteproc: Use %p for pointer formatting
remoteproc: Add compile testing for additional TI drivers
remoteproc: k3-dsp: Fix usage of omap_mbox_message and mbox_msg_t
remoteproc: k3: Include what we need and only what we need
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The JITs pass the first stack arguments of a call in registers:
x86-64 r9 argument 6
arm64 x5-x7 arguments 6-8
riscv64 a5-a7 arguments 6-8
'*(u64 *)(r11 - 8) = rX' writes such a register in the caller.
'rX = *(u64 *)(r11 + 8)' reads it in the callee. A call changes these
registers. Thus the verifier accepts no call between the write and the call
of the callee, and no call in the callee before the read.
may_goto is not a call for the verifier. But one time in 65535 iterations
it calls arch_bpf_timed_may_goto(), and this function calls C code. It
saves R0-R5 only.
*(u64 *)(r11 - 8) = 0 ; the verifier: argument 6 is 0
call sub
sub:
1: may_goto 2f ; C code changes r9
goto 1b
2: r2 = *(u64 *)(r11 + 8) ; r2 is a kernel address
r1 = map_value
r1 += r2
*(u64 *)(r1 + 0) = 0
On x86-64 the C code changes r9 when the time of may_goto is up. With the
hpet clocksource a look at the clock changes r9 too. The prog above crashes
the kernel. LLVM does not emit such code: it reads stack arguments at the
entry of a function, and it writes them immediately before the call.
Save and restore these registers too. The cost is 2 insns on x86-64, 4 on
arm64 and 6 on riscv64, one time in 65535 iterations.
Fixes: 324c3ca6eed6 ("bpf,x86: Implement JIT support for stack arguments")
Fixes: 235b2fe772f5 ("bpf, arm64: Add JIT support for stack arguments")
Fixes: ba754185f902 ("riscv, bpf: Add BPF stack arguments support for RV64 JIT")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261027190314.1440199-19-alexei.starovoitov@gmail.com
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x86 has no fetching AND/OR/XOR. Thus the JIT emits a loop with cmpxchg.
cmpxchg uses RAX, and RAX holds BPF R0. Thus the JIT saves R0 before the
loop.
prog the address is in the JIT saves R0 in
-------------------------- ------------------ -------------------
without the flag a BPF register BPF_REG_AX
with BPF_F_ARENA_SCALAR BPF_REG_AX the stack
The flag is removed. Remove the second variant.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261027190314.1440199-7-alexei.starovoitov@gmail.com
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Rust has no address spaces. Thus a prog in Rust accesses arena through
scalars. With BPF_F_ARENA_SCALAR the verifier accepts each load and each
store through a scalar as an access to arena.
The verifier rewrites one insn at a time. Thus it must add one insn to each
access. The compiler knows the source of each pointer. It can emit one
addr_space_cast for each pointer, as it does for the __arena pointers of C.
flag: one move for each access cast: one cast for each pointer
ax = (u32)r1 r1 = addr_space_cast(r1, 0, 1)
r2 = *(u64 *)(ax + 0) r2 = *(u64 *)(r1 + 0)
ax = (u32)r1 r3 = *(u64 *)(r1 + 8)
r3 = *(u64 *)(ax + 8)
20 progs of rust-bpf, with the flag and with the casts that a prototype of
an LLVM pass emits:
flag casts
moves or casts 1568 571
insns 14864 13938
jited bytes 72351 69111
No released kernel has the flag. LLVM does not emit the casts for Rust at
this time. Until it does, Rust progs that access arena do not load.
scx_mavd and scx_nitosis set the flag too. They are experimental schedulers
in C in sched-ext/scx, and they use the flag to omit __arena. They must use
__arena again.
This reverts commit 4c651a91bdfc
("bpf: Treat load and store through a number as arena access"). One part
stays: BPF_REG_AX in reg2pt_regs[] of the x86 JIT. The fetching AND/OR/XOR
atomics in arena use it now.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261027190314.1440199-6-alexei.starovoitov@gmail.com
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Pull xtensa updates from Max Filippov:
- fix clk reference leak in calibrate_ccount
- small fixes in comments
* tag 'xtensa-20261027' of https://github.com/jcmvbkbc/linux-xtensa:
xtensa: time: Fix clk reference leak in calibrate_ccount()
xtensa: fix typos in comments
xtensa: atomics: drop kernel-doc comments
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu updates from Greg Ungerer:
"Platform code added for the ColdFire 54418 RNG hardware block. Also
PWM address definitions for the 54418. A fix for seccomp filter
processing during system call entry and a fix for compiling the
Cleopatra board target. A config update for the stmark board, and
lastly a couple of typo fixes"
* tag 'm68knommu-for-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: coldfire: Add RNG support for MCF54418
m68k: mcf5441x: add PWM defines
m68knommu: fix compile breakage for 5407 cleopatra board
m68k: defconfig: update stmark2 defconfig
m68k: Fix seccomp filtering on ColdFire and 68000
m68k: remove unused <asm/quicc_simple.h> header
m68k: fix typo "eanble" in comment
m68k: coldfire: fix typos in reset.c comment
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- "mm: make VMA flag semantics explicit, eliminate VM_SPECIAL" (Lorenzo
Stoakes):
Replace VM_SPECIAL with helpers describing mapping ownership and
behavior. Enforce the mmap flag rules and convert affected drivers,
removing ambiguous tests shared by driver mappings and ordinary
memory.
- "support kselftest on nommu platform" (Hajime Tazaki):
Add opt-in mmap and mremap tests for NOMMU systems. Teach the runner
to avoid its fork-dependent timeout command and document the build
and runtime requirements.
- "mm/collapse: separate a collapse from its callers" (Kiryl
Shutsemau):
Separate huge-page collapse from caller policy. Replace khugepaged
identity checks with explicit permissions, and separate scanning from
collapse with the mmap_lock drop in one place.
- "mm: implement and use vma_has_anon_rmap(), silence KCSAN" (Lorenzo
Stoakes):
Provide a common helper for testing whether a VMA has anonymous
reverse mappings. Document the locking rules, annotate intentional
concurrent reads for KCSAN, and convert the core MM callers.
- "mm/sparse: remove SECTION_MARKED_PRESENT and further cleanups"
(David Hildenbrand):
Remove SECTION_MARKED_PRESENT in favor of the early-section flag.
Simplify sparse memory initialization, section metadata handling and
related PFN validity checks.
- "sh: remove NUMA and SPARSEMEM support" (Mike Rapoport):
Remove SuperH NUMA and SPARSEMEM support. The extra memory banks have
been unusable since the NO_BOOTMEM conversion, leaving only the code
and data overhead.
- "mm: Unify device DAX and HugeTLB vmemmap population paths" (Muchun
Song):
Unify the generic device DAX and HugeTLB vmemmap population paths and
shared tail-page handling. Remove the duplicate DAX machinery while
retaining the powerpc radix implementation.
- "kselftest: mm: fix some failure of split_huge_page_test" (Yeoreum
Yun):
Fix huge-page split tests racing with khugepaged recollapse. Use
pagemap and page flags instead of VMA-boundary assumptions which fail
when glibc has already enabled THP.
- "memcg: move memcgid refcount to objcg to unpin dying memcgs"
(Bingfang Guo):
Let dying memcgs be freed while swapped-out shmem still holds their
IDs. Move ID references to reparentable objcgs, with the necessary
swap accounting and RCU lifetime changes.
- "mm/truncate: fix data loss when truncating straddling large folios"
(Zhang Yi):
Preserve out-of-range data when truncating straddling large folios.
Fix a lookup race and split-failure handling, and handle minimum
folio orders for the forthcoming ext4 iomap buffered I/O path.
- "mm/damon: introduce damos quota goal target metric complement flag"
(SJ Park):
Let DAMOS quota goals use a metric's complement, so utilization can
also express free-memory goals without adding separate metrics. Add
the sysfs interface, documentation and tests.
- "arm64/mm: Standardize printing for pgtable entries" (Anshuman
Khandual):
Use the generic formatter for arm64 page-table entries, ready for
future wider entries. Move the safe-PTE-update check out of the
header to avoid an include cycle.
- "mm: kmsan: fix iounmap metadata teardown" (Dima Koziuk):
Fix KMSAN metadata leaks on iounmap and failed ioremap allocations.
Free backing pages before removing their mappings, and share the
teardown with partial-allocation cleanup.
- "mm/damon/core: preserve quota state when constructing schemes" (Karl
Mehltretter):
Preserve running DAMOS quota state while validating parameter
updates. Even rejected updates could reset accounting and exceed the
quota window; add tests for both accepted and rejected updates.
- "mm/vmalloc: fix vmalloc_dump_obj VA lookup" (Ye Liu):
Fix vmalloc_dump_obj() lookups for last-page addresses and
allocations spanning vmap zones. These allocations were being missed
in diagnostic output.
- "mm: various (urgent?) fixes" (David Hildenbrand):
Fix mmap charge leaks and hugetlb use-after-free, wrong-address
unmapping, stuck locks and endless faults. Also preserve reservations
on failed mremap and handle stale userfaultfd bits.
- "maple_tree: fix maple_range_64 crashes in RCU mode" (Dimitris
Charisis):
Fix pointer and metadata confusion during RCU destruction of
maple_range_64 nodes, avoiding double frees and invalid accesses. Add
a regression test; no in-tree user currently uses this combination.
- "mm: fix hugetlb NR_HUGETLB accounting on folio migration" (Hongfu
Li):
Fix hugetlb migration and preallocation accounting so /proc/vmstat
retains the correct count and memory.numa_stat follows the folio to
its new node.
- "mm/damon: fix a minor bug, clean code, and add a test" (SJ Park):
Fix 32-bit DAMON age overflow which made old regions look young.
Share hugetlb folio acquisition code and add a regression test for
the previously fixed last-region skipping bug.
- "mm/damon/core: cleanup code, reduce stack usage, and add kunit" (SJ
Park):
Reduce kdamond stack usage and remove unused enums. Add deterministic
PSI quota-goal tests which do not depend on the machine's current
memory pressure.
- "mm/damon: fix the temporal goal tuner's size quota conversion"
(Donggeun Yoo):
Bound the temporal tuner's quota conversion to prevent overflow and
zero effective quotas, which could stop schemes making progress. Add
boundary tests.
- "Don't use GFP_DMA when calling dma_alloc_coherent" (Baoquan He):
Remove redundant GFP_DMA flags from coherent DMA allocation calls.
The DMA API already selects the zone from device limits and ignores
the caller's flag.
- "kselftest: mm: fix intermittent failure khugepaged test" (Yeoreum
Yun):
Propagate child-process failures in the khugepaged tests and prevent
background collapse from racing their checks. This removes false
passes and intermittent failures.
- "MAINTAINERS: cover all hugetlb headers under HUGETLB SUBSYSTEM"
(Enze Li):
Cover all hugetlb headers in MAINTAINERS so get_maintainer.pl finds
the right maintainers. Also label the closing hugetlb_cgroup.h
include guard.
Summary of the 65 singletons in this merge:
The singletons include a few worthwhile performance fixes. Avoiding
unnecessary reverse-map tree updates gave a reported 15.9% improvement
in UnixBench's execl test on a 192-core x86 system. A reclaim retry
fix stops defrag_mode from spinning under memory.low protection; a
reported file-creation stress test ran 5.7 times faster, with far less
memory pressure. Narrower hugetlb invalidations also spare KVM guests
needless refaults: the reported Redis-in-VM P99 QPS penalty while
punching holes fell from 7.09% to 1.45%.
Several fixes prevent lost data or corrupted memory. Lazyfree
huge-page races with mremap()/munmap() could lose data or access freed
memory, and MADV_COLD could lose a concurrent write's dirty bit.
Another fix prevents stale migration entries from outliving large
folios. On filesystems with blocks smaller than a page, extending a
file by 4 GiB or more could expose bytes written past the old EOF
through mmap instead of zeroes. That is fixed, along with
use-after-free races in PAGEMAP_SCAN during process exit and in
memory-cgroup accounting on PREEMPT_RT kernels.
Other fixes stop UFFDIO_MOVE spinning forever on pinned large folios,
which could wedge other memory operations, and stop mremap() leaking
commit charges until allocations fail under strict overcommit. A
further fix keeps userfaultfd tracking intact on neighboring mappings.
NUMA binding no longer prevents long-term pins when the chosen node
has only movable memory, fixing QEMU/VFIO startup and io_uring buffer
registration failures. MGLRU also gets a fix for early-boot crashes
with memory cgroups disabled at boot, notably in small crash kernels.
* tag 'mm-stable-2026-10-25-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (213 commits)
mm: multi-gen LRU: fix NULL lruvec->pgdat deref with memcg disabled on cmdline
mm/page_counter: use WRITE_ONCE() for emin/elow when parent is the root
mm/memcontrol: publish null pointer before dropping css reference
test_maple_tree: test maple_range_64 node in RCU mode
maple_tree: fix maple_range_64 crashes in RCU mode
mm/vma: avoid broken uffd merge on mremap
tools/testing/shared: catch a failed posix_memalign()
mm/damon/core: remove unreachable damos charge_{target,addr}_from
mm/shrinker: allocate shrinker_info_unit from a dedicated kmem_cache
riscv: mm: exclude invalid THP PMDs from page table check
mm/damon/core: filter out damos address filter-split failed region
fs/proc/task_mmu: pin mm_users in do_pagemap_scan()
mm/mempolicy: apply bind policies against the scoped allocation zone
mm/vmscan: reclaim every zone in per-node proactive reclaim
mm/mremap: correctly uncharge accountable VMAs in error path
mm/mremap: populate calculated fields in vrm state correctly
MAINTAINERS: add an entry for MEMORY MANAGEMENT - MEMORY MAP
mm: bdi: reset min_ratio after the sysfs attributes are gone
mm/page_vma_mapped: continue past nonmatching huge PMDs
selftests/mm: skip hugetlb cgroup v2 tests without the needed controllers
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "ocfs2: exit recovery thread on mount error path" (Joseph Qi):
Stop OCFS2 recovery before freeing failed-mount state and replay
slots, closing use-after-free and double-free races. Defer
suballocator reclaim to break a transaction-lock deadlock with
dismount.
- "ocfs2: validate suballoc slot and bit of metadata blocks" (Joseph
Qi):
Validate OCFS2 metadata suballocator slots, bits and directory index
block locations. Reject corrupt metadata with filesystem errors
instead of BUGs or out-of-bounds accesses.
- "ocfs2: deal with legacy signed name hash values" (Joseph Qi):
Restore OCFS2 lookups for non-ASCII names stored with legacy signed
hashes. Use stored xattr hashes during bucket splits to avoid
duplicate entries and spurious ENOSPC failures.
- "ocfs2: stabilize dentry names in file and setattr traces" (Cen
Zhang):
Snapshot OCFS2 names during file and setattr tracing to prevent
rename races using freed storage or mismatched names and lengths.
Preserve trace formats and the locked release open-count sample.
- "panic: fix panic_force_cpu= redirect races and NMI bypass" (Bradley
Morgan):
Fix panic_force_cpu races and NMI redirection so crash-kernel CPU
selection is honored. Preserve variable arguments on failed redirects
and use a static message buffer.
- "fat: allocate multiple clusters in fallocate" (Matheus Alves de
Almeida):
Allocate FAT clusters in batches for FALLOC_FL_KEEP_SIZE and batch
FAT updates. This removes repeated single-cluster allocation
overhead, particularly on synchronous mounts.
- "scripts/gdb: fix radix tree lookup and stack depot diagnostic"
(Ting-Han Hou):
Fix GDB radix-tree lookup and its handling of XArray sibling, retry
and zero entries. Also repair the stack-depot diagnostic for an
out-of-range pool index.
- "hung_task: Improve warning budget handling and task reporting"
(Aaron Tomlin):
Reset the hung-task warning budget after recovery so later hangs
remain visible. Keep the configured limit intact and emit one summary
per scan when detailed reports exhaust the budget.
- "bootconfig: Reject unexpected data after null character and
cleanups" (Masami Hiramatsu):
Reject bootconfig data after an embedded null while accepting
trailing padding. Validate the full input in the userspace tool, and
retain internal tree sanity checks there rather than in the kernel.
- "kbuild: GCOV cleanups following the prefer-atomic fix" (Konstantin
Khorenko):
Use the actual GCOV build flags in the prefer-atomic compiler probe.
Move flag setup into scripts/Makefile.gcov and skip the probe when
GCOV is disabled.
- "ocfs2: xattr bucket validation fixes" (Joseph Qi):
Accept valid OCFS2 xattr buckets spanning 512-byte blocks, avoiding
false read-only remounts. Reject misaligned buckets and return errors
instead of panicking on corrupt defrag metadata.
- "ocfs2: fix metadata reservation for xattr value trees" (Joseph Qi):
Reserve enough OCFS2 metadata for new and relocated xattr value
trees. Fix shortfalls which could cause ENOSPC, dropped entries and
leaked clusters on fragmented filesystems; remove duplicate
reservations.
- "Introduce arch_do_panic" (Mete Durlu):
Add arch_do_panic() and move s390 and sparc handling out of generic
panic code. The architecture-specific actions now follow the
end-of-panic marker.
- "checkpatch: userspace improvements" (Petr Vorel):
Improve checkpatch's userspace detection and suppress kernel-only
checks. Recognize standard inttypes macros and add explicit
--userspace and --no-userspace overrides.
- "ocfs2: validate dr_fs_generation of dir index root blocks" (Joseph
Qi):
Check OCFS2 directory index generations and leaf block numbers.
Reject stale or misplaced blocks instead of using metadata left by a
previously formatted filesystem.
- "selftests/membarrier: Skip an unregistered memory barrier test on
Musl" (Chris Gellermann):
Skip the unregistered membarrier test when libc has already
registered the command. Musl does this during thread creation,
causing false failures in the multithreaded test.
- "init: fix array boundary bugs in boot parameter parsing"
(Wilson Felipe Pereira):
Fix boot argument boundary cases which leave stale arguments in
init's command line or panic when replacing the final environment
variable. Clear the last slot and check duplicates before the limit.
Summary of the 87 singletons in this merge:
The OCFS2 singletons fix deadlocks between xattr updates and inline
truncation, and during inode reclaim. Corrupt quota and extent
metadata could also crash the kernel or corrupt memory; these paths
now check the layout before using it. Other fixes close use-after-free
and publication races around cluster reconfiguration, node failure,
quota remount errors and shared refcount trees. New files now retain
security labels from all stacked LSMs instead of silently dropping all
but one. Valid xattr insertions also stop tripping FORTIFY on builds
with counted arrays.
Elsewhere, a lost wakeup could leave hardware-monitoring reads stuck
in unkillable sleep and block further I2C traffic. That is fixed, as
are kernel memory leaks in POSIX message-queue notifications and tmpfs
casefold setup which could grow until memory is exhausted. A driver
removal race which could crash the kernel is fixed too. The
hibernation command through reboot() also stops taking the same mutex
twice, avoiding a deadlock before suspension.
On the boot side, bzip2 decoding now accepts valid full blocks emitted
by lbzip2, fixing failures to boot those compressed kernels. Malformed
bzip2 streams can no longer overflow the decode buffer, and LZ4
initrds are checked before the decoder can read past their end. FAT
rejects geometry which overflows the data-area calculation on 32-bit
systems, and rolls back entries when inode setup fails, preventing
failed creations from reappearing after remount. The x86 XOR and RAID6
AVX paths also avoid imposing a slowdown on subsequent SSE code.
* tag 'mm-nonmm-stable-2026-10-25-14-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (134 commits)
scripts/gdb: fix stack depot out-of-bounds diagnostic
scripts/gdb: fix radix tree lookup pointer handling
ocfs2/cluster: remove zero-address nodes from IP tree on teardown
ocfs2: snapshot the dentry name while tracing file release
ocfs2: snapshot dentry names in file and setattr traces
ocfs2/dlm: drain join handlers before releasing module text
MAINTAINERS: update Markus's e-mail address
mailmap: add entries for Andrew Jones
stackdepot: stop preallocating after the final pool
ocfs2: drain quorum work before removing the cluster
watchdog: force console verbose when reporting lockups
profiling: fix sampling step on 64-bit big-endian systems
kernel/reboot: avoid potential deadlocks during suspension
compat: avoid double rounding in times()
ocfs2: pin owning modules for open debugfs files
ocfs2/cluster: initialize heartbeat regions before publishing them
selftests/proc: proc-pid-vm: fix unused variable warning on non-x86
ocfs2: pin refcount trees before dropping the lookup lock
ocfs2: validate the xattr tree root of an indexed xattr block
ocfs2/dlm: hold the lookup reference across convert AST enqueue
...
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
- fix out-of-bounds read in eisa_enumerator driver
- drop redundant pte_xxx() macros and use common macros
- code cleanup in eisa_enumerator driver
- typo fixes in comments in various header files
* tag 'parisc-for-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: eisa_enumerator: Code and whitespace cleanups
parisc: eisa_enumerator: Fix out-of-bounds reads of the EEPROM buffer
parisc: Drop redundant implementation of ptep_set_wrprotect()
parisc: Drop redundant implementation of pte_same()
parisc: Drop own implementations for ptep_get() and ptep_test_and_clear_young()
parisc: fix typos in comments in parport.c
parisc: fix typos in comments in sba_iommu.c
parisc: fix typos in comments in pdc_stable.c
parisc: fix typos in comments in dino.c
parisc: fix typos in comments in ccio-dma.c
parisc: fix typos in comments in memcpy.c
parisc: fix typos in comments in mman.h
parisc: fix typos in comments in special_insns.h
parisc: fix typos in comments in pdcpat.h
|
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git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh updates from John Paul Adrian Glaubitz:
"Fixes and improvements for various boards as well as the generic sh
kernel:
- help the mach-x3proto and ecovec24 boards get rid off the use of
the old platform data API in the kernel. For the former board,
software nodes are being used for gpio-keys now while for the
latter board, static device properties are used to describe the
touchscreen (Dmitry Torokhov)
- a build fix when CONFIG_BUILTIN_DTB is enabled, and fix an issue
with __get_user_u64() and __put_user_u64() using wrong memory
operands which could cause the kernel build to fail with "invalid
'asm'" or an internal compiler error in GCC's change_address_1
(Florian Fuchs)
- update various default configuration files of several boards to
replace the removed CONFIG_USB_GADGET_M66592 with the new
CONFIG_USB_M66592 Kconfig option (Pengpeng Hou)
- fix two issues with the SH-7785LCR evaluation board: fix a kernel
memory leak which occurred as a result of the prio and sense lists
being sorted too early in register_intc_controller(), and fix the
the registration of the PCA9564 controller so that the RTC works
properly again (Karl Mehltretter)
- fix missing cookies when calling free_irq() in the maple bus driver
which ensures that IRQ handlers can be properly unregistered and
the kernel does not emit a WARN message (Runyu Xiao)
- select BINFMT_FLAT_NO_DATA_START_OFFSET for !MMU configurations
such that there is no gap at the end of text and init runs which
causes the GOT register to point below the real GOT, so every GOT
load reads the neighbouring slot and gets a wrong pointer (Waldemar
Brodkorb)"
* tag 'sh-for-v7.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
sh: Select BINFMT_FLAT_NO_DATA_START_OFFSET for !MMU
sh: maple: Use the matching IRQ cookie when invoking free_irq()
sh: sh7785lcr: Register the PCA9564 controller as I2C bus 0
sh: intc: Sort the prio and sense lists after filling them
sh: defconfig: Enable the current M66592 UDC symbol
sh: uaccess: Require offsettable operands for 64-bit user access
sh: Fix built-in DTB build with generic rule
sh: ecovec24: Use static device properties to describe the touchscreen
sh: mach-x3proto: Convert gpio-keys to software nodes
sh: mach-x3proto: Add software node for GPIO controller
|
|
Pull MIPS updates from Thomas Bogendoerfer:
"MM:
- fix huge TLB handling
OCTEON:
- correct register access for CN6xxxx SOCs
- provide DTs for platforms where U-Boot doesn't have a DT
Decstation:
- fix 64bit kernels
- build cleanups
Others:
- cleanups and fixes"
* tag 'mips_7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (30 commits)
MIPS: octeon: Add detection of UBNT Edgeroute Lite devices
MIPS: octeon: Use MIPS_MACHINE for boards without provided device tree
MIPS: GT64120: Remove duplicate GT_PCI1M1LD_OFS and GT_PCI1M1HD_OFS
mips: dts: pic32: pic32mzda: Remove unused address-cells, size-cells property
MIPS: generic: Remove undefined image 'ramdisk'
docs: ABI: lefi: drop "ROM Size" in sysfs file doc.
docs: ABI: lefi: use literal blocks
MIPS: dec: Reorder header inclusions in setup.c
MIPS: Reword KBUILD_SYM32 documentation for clarity
MIPS: Eliminate redundant KBUILD_SYM32 check
MIPS: decstation_64_defconfig: Compile the kernel with warnings as errors
MIPS: decstation_64_defconfig: Regenerate for 7.x
MIPS: dec: Add missing <linux/interrupt.h> inclusion to reset.h
MIPS: Only check -msym32 when need-compiler
MIPS: remove unused <asm/cmp.h> header
MIPS: remove unused <asm/mips-boards/sead3-addr.h> header
MIPS: remove unused <asm/amon.h> header
MIPS: Octeon: offer the RedBoot parser when it is modular
MIPS: Octeon: size the swiotlb for a modular OHCI platform driver
MIPS: mm: do not write a huge TLB entry when the probe misses
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar:
- Mark CPUID function 0x23 as being indexed - which bug could break
VMs (Sean Christopherson)
* tag 'x86-urgent-2026-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpuid: Mark CPUID function 0x23 as being indexed
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events fixes from Ingo Molnar:
- Fix Alpha build failure caused by a semantic conflict
between perf and arch-alpha changes (Thomas Weißschuh)
- Fix UAF in attach_task_ctx_data() (Lee Jia Jie)
- Fix perf_remove_from_context() event scheduling (Peter Zijlstra)
* tag 'perf-urgent-2026-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix perf_remove_from_context() event scheduling
perf: Fix UAF in attach_task_ctx_data()
alpha: add simd_enabled argument to perf_reg_validate()
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git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull liveupdate updates from Mike Rapoport:
- Several small fixes to KHO and LiveUpdate selftest
- A series that renames "KHO scratch" to "KHO bootmem" because this
memory is way more important in kexec'ed kernels rather than in the
original cold boot kernel and the new name reflects it
* tag 'liveupdate-v7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux:
kho: do not reserve empty per-node bootmem areas
selftests/liveupdate: Prefer KVM and HVF over TCG in vmtest.sh
kho: rename kho_scratch= commandline parameter to kho_bootmem=
kho: rename KHO scratch to KHO bootmem
memblock: rename KHO_SCRATCH to KHO_NOPRSRV
memblock: get rid of CONFIG_MEMBLOCK_KHO_SCRATCH
kho: docs: fix scratch_phys debugfs cross-reference
kho: do not reserve scratch memory in the kdump kernel
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git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull kexec updates from Mike Rapoport:
- Fix probe error codes and error propagation:
- make architecture functions that probe loaded image consistenly
return -ENOEXEC when they do not recognize the image format
- make kexec_image_probe_default() distinguish image format
mismatches (-ENOEXEC) from real errors (e.g. -ENOMEM),
propagating real errors immediately and only continuing to the
next loader on -ENOEXEC
- Make sure the next kernel does not land on hardware-poisoned pages
- Remove unused arch_kexec_locate_mem_hole hook
* tag 'kexec-v7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux:
kexec_file: remove unused arch_kexec_locate_mem_hole hook
kexec: fix error propagation in kexec_image_probe_default()
kexec: return -ENOEXEC from image probe functions on mismatch
kexec: keep the next kernel off hardware-poisoned pages
kexec_file: stop the top-down search before it underflows
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git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- Set the LoaderDevicePartUUID EFI variable from the stub to help
systemd discover the file system layout when booting straight into
Linux without GRUB or systemd-boot (Vincent Mailhol)
- Some GUID deduplication work from Vincent
- Remove pointless UTF16->UTF8 and vice versa conversions from the stub
- Some kmap() -> kmap_local_page() conversions in the capsule loader
- Add a runtime control to en/disable EFI runtime services so that
PREEMPT_RT systems can enable them as needed
- Add a 'nostatfs' mount option to efivarfs so that the cost of
querying the EFI variable store (which is already rate limited) can
be avoided entirely on systems where it is disproportionately costly
- Rework the EFI libstub Makefile to align x86 with other
architectures, and inherit/adapt the global CFLAGS variable rather
than reconstruct it from scratch
- Constify attributes of statically allocated sysfs nodes
- Avoid register x18 when building the arm64 EFI stub, in order to
comply with the UEFI spec, and to permit it to execute in a context
where x18 is special
- Preserve the physical addresses of all EFI config tables that may be
of interest to an incoming kexec kernel
- Add some LKDTM tests for EFI runtime crashes where the faulting
address is inside a EFI memory region
- Other minor bug fixes and cosmetic cleanups
* tag 'efi-next-for-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: (35 commits)
lkdtm: Add more EFI runtime tests
efi: Initialize all configuration table addresses to EFI_INVALID_TABLE_ADDR
efi: Retain the address of the LINUX_EFI_MEMRESERVE table
efi/libstub: Don't replace an existing LINUX_EFI_MEMRESERVE table
efi/runtime-wrappers: Don't park the worker after a recovered firmware fault
efi: Use sysfs_emit() not sprintf() to generate sysfs file contents
efi: Constify sysfs attributes
efi/libstub: Disable kernel stack erasing in the common flags
efi/libstub: Build the x86 stub from KBUILD_CFLAGS
efi/libstub: Declare the x86 stub's assembly entry points
efi/libstub: arm64: Don't use the platform register x18
efi/libstub: Free cmdline_ptr in efi_pe_entry
efi/riscv: libstub: Don't set image_size in handle_kernel_image()
efi/libstub: Fix error unwind freeing fdt in allocate_new_fdt_and_exit_boot()
efivarfs: add nostatfs mount option to skip QueryVariableInfo()
efi/libstub: add initial Boot Loader Interface support
efi/libstub: Add efi_snprintf() to construct wide strings
efi/libstub: Add support for printing human readable GUIDs
efi/libstub: Output UTF-16 directly from vsnprintf()
efi/libstub: Avoid efi_puts() for compile time constant strings
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- v4l2 core:
- improve subdev and pixformat kAPI;
- fix P010 format info and add Y12 format info;
- add fwnode_graph_for_each_endpoint_scoped();
- New sensor drivers:
- Sony IMX576
- OmniVision OS02G10, OV05C10 and OG0VA1B
- Samsung S5KJN5
- Himax HM1246
- Maxim GMSL2/3: add support for MAX9296A, MAX96717, and MAX96724
- Intel IPU6: add support for IPU7, IPU7.5 and IPU8
- NXP: add support for i.MX95 CSI pixel formatter driver
- ITE: add driver for IT6625/IT6626 HDMI bridge
- Qualcomm: add CSI2 3ph DPHY driver
- Rockchip: add rk3576 MIPI capture vicap driver
- STM32 DCMIPP: Add STM32MP25 subdevices
- Lots of driver fixes and cleanups
* tag 'media/v7.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (596 commits)
media: i2c: imx576: Fix line length register
media: ov05c10: Remove duplicated writes to analogue gain register
media: ov05c10: Power management fixes
media: ov05c10: Set reset GPIO high when acquiring it
media: ov05c10: Small cleanups
media: maxim-serdes: Disable test pattern generator for now
media: mc: Keep INTERNAL pad flags just for the kernel, for now
media: i2c: imx576: select VIDEO_CCS_PLL to repair build error
media: Documentation: mc: Fix Stream reference
media: i2c: add imx576 image sensor driver
dt-bindings: media: i2c: Add imx576 sensor
media: i2c: maxim-serdes: add MAX9296A driver
media: i2c: remove MAX96714 driver
media: i2c: maxim-serdes: add MAX96724 driver
staging: media: remove MAX96712 driver
arm64: defconfig: disable deprecated MAX96712 driver
media: i2c: maxim-serdes: add MAX96717 driver
media: i2c: remove MAX96717 driver
media: i2c: add Maxim GMSL2/3 deserializer framework
media: i2c: add Maxim GMSL2/3 serializer framework
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt update from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 7.4-rc1.
Included in here are:
- thunderbolt driver updates and fixes
- lots of dt schema conversions
- usb gadget driver fixes (and a new maintainer!)
- usb core fixups with some interactions with the driver core
- usb serial updates and fixes for scan-found "issues"
- xhci driver updates
- typec driver updates
- dwc3 driver updates
- lots of usb gadget driver fixes for syzbot found "problems"
- lots of other small USB driver fixes for randomly reported problems.
All of these have been in linux-next with no reported issues"
* tag 'usb-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (158 commits)
usb: gadget: dummy_hcd: prevent unbind via sysfs
usb: gadget: dummy_hcd: add tick_us module parameter for timer-rate tuning
usb: gadget: dummy_hcd: set no_sg_constraint only on the SuperSpeed bus
usb: gadget: dummy_hcd: fix SuperSpeed ep0 maxpacket
usb: gadget: fix refcount underflow in gadgetfs_bind() error path
USB: core: document purpose of interface parent reference
MAINTAINERS: add Neill Kapron as USB Gadget maintainer
USB: Documentation: Update description of completion callback context
USB: serial: mxuport: support RS485 mode configuration
USB: serial: mxuport: handle SEND_NEXT transmit flow control
USB: serial: add generic write control callbacks
USB: serial: mxuport: add MUX50U-based device support
USB: serial: mxuport: clean up firmware version handling
USB: serial: mxuport: clean up product ID definitions and device table
USB: serial: sierra: fix urb leak on write completion
usb: typec: ucsi_ccg: Add retry mechanism in ccg_read
usb: host: xhci-tegra: Add Tegra264 XHCI support
usb: host: xhci-tegra: Skip MBOX MSG_ENABLED on Tegra264
dt-bindings: usb: Add Tegra264 XUSB host support
usb: xhci-pci: Add TUSB73x0 definitions
...
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git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- NVMe updates via Keith:
- Apple M4 (t8132) ANS2 NVMe support
- nvme-multipath sysfs attributes for path_state, iopolicies, and
fail_on_ctrl_loss, plus path state evaluation fixes
- nvme-tcp parallelized I/O queue allocation and startup, and using
the caller's network namespace
- nvmet passthru UAF fix and rework, PR preempt use-after-free
fixes, auth hardening, and traffic based keep alive support
- DH-HMAC-CHAP secret attributes readable by root only
- Various other fixes and cleanups
- swim driver overhaul and fixes, plus floppy fixes, via a pull from
Denis
- Block device buffered and direct I/O rework from Tal: use
iomap_dirty_folio, take i_rwsem for the write fallback and splice
read, honor IOCB_NOWAIT in the buffered read path, and reject atomic
write fallback to buffered I/O
- Large zone revalidation rework: serialize revalidation, handle
capacity changes by dropping and retrying zone write plugs, propagate
read-only and offline conditions, and treat offline and read-only
zones as dead
- ublk robustness work around canceled FETCH rounds and going live over
canceled io commands, dropping the default I/O scheduler, and a batch
of selftest additions
- blk-iocost flush cost support and zone append accounting
- rust block fixes for Send/Sync bounds on GenDisk and TagSet, and
import style cleanups
- Atomic write fixes capping size by the PI buffer constraints and
failing short atomic pins
- Skip the redundant flush for O_DSYNC direct writes, and only use
REQ_FUA when the device supports it
- Store GPT attributes as a raw value
- Remove support for swapping loop fds
- Various other fixes and cleanups all over
* tag 'for-7.4/block-20261021' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (144 commits)
block: restore the iterator when rejecting a misaligned bio
blk-mq: clear stale inactive flag on hctx reuse
block, bfq: initialize active lists for all actuators
zloop: print device that had errors
ublk: pin module while release work is pending
blk-mq: drop the tag_set argument from blk_mq_free_rq_map/tags
blk-mq: share one tags_srcu instance across all tag sets
blk-iocost: fix stale comment in ioc_rqos_throttle()
blk-iocost: account zone append completions in latency stats
blk-iocost: charge zone appends as writes
blk-iocost: add flush cost support with the flushiops model parameter
ublk: use global index for reported zones
selftests: ublk: add test for going live over canceled io commands
selftests: ublk: stop a batch thread when PREP_IO_CMDS fails
selftests: ublk: move the control command helpers into ctrl.c
ublk: refuse to go live after an io command was canceled
ublk: let STOP_DEV cancel the server's commands before its release
ublk: allow a NULL io->cmd in the cancel callback
ublk: reset the FETCH round under ub->mutex
ublk: reset the FETCH round in release also without a disk
...
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RISC-V THP splitting uses a temporary invalid PMD state where
pmd_mkinvalid() clears _PAGE_PRESENT and _PAGE_PROT_NONE but leaves
_PAGE_LEAF set so the MM code can still recognize the PMD as a THP split
in-progress entry.
That temporary state no longer describes a user-accessible mapping, but
page_table_check currently treats it as one because the RISC-V PMD
user-accessibility test only checks whether the PMD is a leaf and has user
permissions.
As a result, when a PMD-sized anonymous THP is split during a COW fault,
page_table_check can account the invalid intermediate PMD as a live PMD
mapping, and then account the replacement PTE mappings again when the
split installs the PTE table. This leaves stale PMD accounting behind and
later triggers page_table_check failures such as a non-zero anon_map_count
when the folio is freed.
Fix this by tightening pmd_user_accessible_page() so PMD page-table-check
accounting only considers leaf PMDs that still carry either _PAGE_PRESENT
or _PAGE_PROT_NONE. This preserves the THP split semantics required by
the MM code while preventing page_table_check from treating invalid split
PMDs as live user mappings.
With CONFIG_PAGE_TABLE_CHECK=y and CONFIG_PAGE_TABLE_CHECK_ENFORCED=y,
tools/testing/selftests/mm/cow completes successfully on RISC-V after this
change.
Link: https://lore.kernel.org/20260523042052.35476-1-cuiyunhui@bytedance.com
Fixes: 3fee229a8eb9 ("riscv/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK")
Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: tongtiangen <tongtiangen@huawei.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: David Hildenbrand (Arm) <david@kernel.org>
Cc: Vivian Wang <wangruikang@iscas.ac.cn>
Cc: Yaxing Guo <guoyaxing@bosc.ac.cn>
Cc: <stable@vger.kernel.org>
|
|
The common vmemmap path selects the shared page for optimized mappings
itself, so Device DAX no longer needs vmemmap_populate_compound_pages() to
find a shared tail page and pass its backing PFN through the generic
population helpers.
Remove the Device DAX-specific population path and let section memmap
population always use vmemmap_populate(). The powerpc retains an
architecture-specific compound-page implementation, so select it directly
from radix__vmemmap_populate() for optimizable sections.
Link: https://lore.kernel.org/20261010075755.83339-4-songmuchun@bytedance.com
Signed-off-by: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Acked-by: Qi Zheng <qi.zheng@linux.dev>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <chleroy@kernel.org>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
|
|
The is_vm_hugetlb_page() predicate is badly named - the mapping can span
more than a page and it is inconsistent with other VMA predicates that
typically are prefixed by vma_.
Rename to vma_is_hugetlb() for consistency, and while we're here update
some VM_BUG_ON_VMA() to VM_WARN_ON_ONCE_VMA() as to avoid unnecessary
oopses.
No functional change intended.
Link: https://lore.kernel.org/20261013-b4-mmap-prepare-vma-flag-sanify-v6-28-1aa3c9b139f9@kernel.org
Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Anup Patel <anup@brainfault.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Stephen Smalley <stephen.smalley.work@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Nico Pache <nico.pache@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Usama Arif <usama.arif@linux.dev>
Cc: Kiryl Shutsemau <kas@kernel.org>
Cc: Doug Gilbert <dgilbert@interlog.com>
Cc: James Bottomley <james.bottomley@hansenpartnership.com>
Cc: Martin K. Petersen <mkp@kernel.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Harry Yoo <harry@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Aneesh Kumar K.V <aneesh.kumar@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Oliver Upton <oupton@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Baoquan He <baoquan.he@linux.dev>
Cc: Youngjun Park <youngjun.park@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Qi Zheng <qi.zheng@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Xu Xin <xu.xin@linux.dev>
Cc: Ihor Solodrai <ihor.solodrai@linux.dev>
Cc: Bert Karwatzki <spasswolf@web.de>
|
|
These are not MMIO pages so VMA_IO_BIT is an inappropriate flag to set.
Instead, set them VMA_MIXEDMAP_BIT as they are kernel mappings and this is
the appropriate flag to set for those.
This provides the semantics required - no VMA merging is permitted, but
does not prevent GUP.
However this has no meaningful impact as these are refcounted and thus can
be GUPed.
A previous commit already prevented __mm_populate() from being invoked on
XOL areas, which VMA_IO_BIT was previously relied upon to do, so that is no
longer required.
Both VMAs set a VMA name, so always_dump_vma() returns true before
vma_dump_size() reaches its VMA_IO_BIT check, and thus there is no change
in core dump behaviour.
Change this for both the core xol_add_vma() function and the x86-specific
get_uprobe_trampoline() function.
Link: https://lore.kernel.org/20261013-b4-mmap-prepare-vma-flag-sanify-v6-22-1aa3c9b139f9@kernel.org
Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Stephen Smalley <stephen.smalley.work@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Nico Pache <nico.pache@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Usama Arif <usama.arif@linux.dev>
Cc: Kiryl Shutsemau <kas@kernel.org>
Cc: Doug Gilbert <dgilbert@interlog.com>
Cc: James Bottomley <james.bottomley@hansenpartnership.com>
Cc: Martin K. Petersen <mkp@kernel.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Harry Yoo <harry@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Aneesh Kumar K.V <aneesh.kumar@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oupton@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Anup Patel <anup@brainfault.org>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Baoquan He <baoquan.he@linux.dev>
Cc: Youngjun Park <youngjun.park@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Qi Zheng <qi.zheng@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Xu Xin <xu.xin@linux.dev>
Cc: Ihor Solodrai <ihor.solodrai@linux.dev>
Cc: Bert Karwatzki <spasswolf@web.de>
|
|
Move MAX_PHYSMEM_BITS declaration to include/asm/mmu.h and drop now
unneeded include/asm/sparsemem.h
Link: https://lore.kernel.org/20260510135546.13554-11-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
Without NUMA support, SPARSEMEM related configuration options only create
unnecessary overhead.
Remove them.
Link: https://lore.kernel.org/20260510135546.13554-10-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
Without CONFIG_NUMA, the call to memblock_set_node() is not needed.
Remove it.
Link: https://lore.kernel.org/20260510135546.13554-9-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
include/asm/mmzone.h was required for declarations of NUMA related
functionality.
The only function declared there that's not related to NUMA is
__add_active_range().
Move __add_active_range() declaration to include/asm/setup.h and drop
include/asm/mmzone.h
Link: https://lore.kernel.org/20260510135546.13554-7-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
and NUMA-related comments.
Link: https://lore.kernel.org/20260510135546.13554-6-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
setup_bootmem_node() and plat_mem_setup() were needed to setup NUMA
"nodes" for URAM memory ranges. Since there is no NUMA support anymore,
these functions are not needed.
Remove them.
Link: https://lore.kernel.org/20260510135546.13554-5-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
allocate_pgdat() function used to allocate the node data structure and
initialize its node_start_pfn and node_spanned_pages fields.
Without CONFIG_NUMA there is no need to allocate the node data and setting
node_start_pfn and node_spanned_pages are redundant because they are
anyway overwritten later by core MM.
Remove allocate_pgdat() function.
Link: https://lore.kernel.org/20260510135546.13554-4-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
Since CONFIG_NUMA is removed, numa.c won't be ever compiled.
Remove it.
Link: https://lore.kernel.org/20260510135546.13554-3-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
Patch series "sh: remove NUMA and SPARSEMEM support", v2.
NUMA support for SuperH was introduced a long time ago by commit
b241cb0c885e ("sh: Support for multiple nodes.")
"... for boards with many different memory blocks that are
otherwise unused (SH7722/SH7785 URAM and so forth)"
In reality, this added 128K of memory on sh7722 and sh7785 and 256K on
shx3 at the expense of all the NUMA related code in the kernel.
For build of v7.0-rc7 with defconfig and the same configuration with
CONFIG_NUMA disabled, bloat-o-meter reports difference of ~76k. Disabling
CONFIG_SPARSMEM on top increases the difference to ~94k. And that's only
overhead in code and static data that does not take into the account data
structures allocated at run time.
And all this overhead has been there for nothing for almost 8 years
because since commit ac21fc2dcb40 ("sh: switch to NO_BOOTMEM") those
additional "nodes" could not be used by the core MM because the maximal
pfn for ZONE_NORMAL was cut out at the end of the normal memory.
This patch (of 10):
NUMA support for SuperH was introduced a long time ago by commit
b241cb0c885e ("sh: Support for multiple nodes.")
"... for boards with many different memory blocks that are
otherwise unused (SH7722/SH7785 URAM and so forth)"
In reality, this added 128K of memory on sh7722 and sh7785 and 256K on
shx3 at the expense of all the NUMA related code in the kernel.
For build of v7.0-rc7 with defconfig and the same configuration with
CONFIG_NUMA disabled, bloat-o-meter reports difference of ~76k. Disabling
CONFIG_SPARSMEM on top increases the difference to ~94k. And that's only
overhead in code and static data that does not take into the account data
structures allocated at run time.
And all this overhead has been there for nothing for almost 8 years
because since commit ac21fc2dcb40 ("sh: switch to NO_BOOTMEM") those
additional "nodes" could not be used by the core MM because the maximal
pfn for ZONE_NORMAL was cut out at the end of the normal memory.
Start removing NUMA support on sh with removing CONFIG_NUMA and related
configuration options in arch/sh/Kconfig and arch/sh/mm/Kconfig.
Link: https://lore.kernel.org/20260510135546.13554-1-rppt@kernel.org
Link: https://lore.kernel.org/20260510135546.13554-2-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
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Verification that the kernel does not have writable + executable mappings
is about detecting security risks rather than a pure debug feature.
Major distribution configurations enable it in their kernels as well as
defconfigs of most architectures that have ARCH_HAS_DEBUG_WX.
Rename relevant generic configuration options to use CHECK_WX and move
their definitions from mm/Kconfig.debug to mm/Kconfig.
Rename *debug_checkwx() funcitons and macros to *pgtable_checkwx().
For arm that does not widely enable it, only rename its variants of the
config options.
Enabling CHECK_WX adds a few kilobytes to the kernel binary and while the
added size can be slightly reduced with churny updates of architecture
implementations of ptdump, the core functionality takes most of the added
size. It cannot be moved to .init.text because the verification has to
happen after init sections are freed.
With this, make generic CHECK_WX default to STRICT_KERNEL_RWX while
still leaving users targeting small kernels the possibility to opt-out.
Link: https://lore.kernel.org/20260926-direct-map-verify-wx-v2-1-efcd64a6b74a@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <chleroy@kernel.org>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Will Deacon <will@kernel.org>
|
|
Standardize printing for pgtable entries using recently introduced generic
helper ptval_bytes_to_hex_str() in core MM which automatically enables 128
bits entries when added later.
Link: https://lore.kernel.org/20260916044933.2689426-3-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
|
|
Patch series "arm64/mm: Standardize printing for pgtable entries", v3.
Standardize printing for pgtable entries using recently introduced generic
helper ptval_bytes_to_hex_str() in core MM which automatically enables 128
bits entries when added later.
But first move __check_safe_pte_update() outside <asm/pgtable.h> to avoid
a cyclic dependency while accessing these afore mentioned core MM helpers
defined in <linux/pgtable.h>. This replaces the original page table entry
print standardisation proposal which was part of the D128 series [1].
This patch (of 2):
The page table entry print helpers and related macros which are defined in
<linux/pgtable.h> will not be accessible in platform <asm/pgtable.h> which
is basically caused by cycling dependency.
Move __check_safe_pte_update() inside arch/arm64/mm/mmu.c as a preparation
for subsequent usage of the afore mentioned generic MM helpers. While
here drop IS_ENABLED(CONFIG_DEBUG_VM), although wrap
__check_safe_pte_update() inside #ifdef CONFIG_DEBUG_VM that preserves the
current code optimization which is achieved via the static inline
functions.
This does not cause any functional change.
[david@kernel.org: aarch64-linux-ld error]
Link: https://lore.kernel.org/99023678-fd8a-4eef-8e43-a07b504e3e96@kernel.org
Link: https://lore.kernel.org/20260916044933.2689426-2-anshuman.khandual@arm.com
Link: https://lore.kernel.org/linux-mm/20260729122452.3797443-11-anshuman.khandual@arm.com/ [1]
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
|
|
Pull drm updates from Dave Airlie:
"Highlights:
- core: a lot of atomic refactoring in progress, panic got split into
a core/helpers model
- amdgpu: enables HDMI 2.1 FRL and other good things finally, UAlink
over Ethernet support
- xe: has a bunch of CRI support, ras error for bad vram, memory
offlining support.
- msm: enables a bunch more GPUs.
Otherwise it's a the usual mountain of stuff all over the place.
Details:
rust:
- I/O tree shared with driver-core
- DMA tree shared with driver-core
- allow aux registration data closures to return covariant sub-fields
- Implement Send and Sync for MapleTree
- add pci resource flags and IORESOURCE_MEM_64
drm/rust:
- add dma_fence abstraction
- init DRM registrations and their data in place
- drop unused flags argument to registration
vgaarb:
- rework API to pass a private ptr instead of pci device
sound:
- adapt to omapdrm changes
gem:
- add callback for handle count going to 0
gpusvm:
- share one HMM fault and keep single mappings inline
pagemap:
- Prevent CPU stalls during unbounded pagemap teardown
dma-fence:
- fix docs
vga_switcheroo:
- disconnect from fbcon
- update fbcon from within fbdev emulation
atomic:
- move DRM from state reset callbacks to atomic_create_state
- remove drm_simple_encoder_init
panic:
- split into core and helpers
buddy:
- improve dirty tracking
clients:
- improve vmap handling
- fbdev: Move helpers from drm_kms_helper.ko to drm_client_lib.ko
display:
- export HDMI SCDC status data via debugfs
- rework SCDC for better HDMI 2.0 support
- dp/mst: improve DPCD compliance
edid:
- parse AMD VSDB
- parse ALLM/VRR capabilities
- support detecting panel size
log:
- add drm_warn_ratelimited
sched:
- cleanup interface
- add missing locking
- fix run-queue cleanup
- fix locking
sysfb:
- remove obsolete quirk for Lenovo D330
- fix panel orientation for non-native display modes
- drop drm_class_device_register
colorop:
- provide DRM_COLOR_OP_FIXED_MATRIX
bridge:
- analogix: Support eDP lane mapping
- ti-sn65dsi83: Support LVDS Channel B on SN65DSI84
- Select DRM_PANEL_BRIDGE for various drivers that require it
- add chrontel ch7218a support
panel:
- panel-edp: Support MNE007QS3-F, TM140VDXP15, and KD116N36-30NB-A001
- samsung-s6d16d0: Use mipi_dsi_*_multi() functions
- support Ilitek ILI7836A OLED plus DT bindings
- support Novatek NT36532 plus DT bindings
- convert several drivers to managed cleanup
- fix Kconfig selections
- edp:
- Add support for BOE NV140FHM-T0A
- Support CSOT MNE007QB1-1
- NV140WU2-M70
- ebbg-ft8719: Fix MODULE_LICENSE() string; Improve initialization
- samsung: Share test-key helpers
- ilitek-ili9882t: Support Ilitek IL79600A plus DT bindings
- simple: Support Truly TFT320240-229-E plus DT bindings; Support BOE
DV215FHM-R01 plus DT bindings
- Refactor struct drm_panel to contain struct drm_bridge plus fallout
in various panel drivers
- Add support for BOE Novatek NT51021, Retroid Pocket 6, Raydium
RM69220 DDIC panels, Sharp LQ138P1JX61 eDP, BOE NV140FHD-N43, AUO
B140HAN04.0, AUO 0x0db3, panels.
amdgpu:
- use AMD VSDB for freesync
- implement YUV-to-RGB with fixed-matrix colorop
- enable FRL for HDMI
- HDMI 2.1 freesync support
- HDMI 2.1 ALLM support
- HDMI 2.1 VRR support
- UALoE (UALink over Ethernet) support
- add syncobj_points to userq signal ioctl
- drop unused kunit tests
- NBIO/GC/MMHUB/SMU updates/fixes
- GPU spatial partitioning updates
- display kunit fixes
- userq fixes
- RGB quantization fixes
- DC RMCM refactor
- DP MST fixes
- USB4 fixes
- add new trace events
- Rework display instance handling
- stack frame size fixes for various compilers/configs
- VCN 4/5 reset fixes
- freesync updates
- cursor refactor
- Fix direct scanout alpha on some DRM_FORMATs
- Expand Mac reserved memory workaround
- Make runtime pm more fine grained
amdkfd:
- updates and fixes
- GC 10 CU occupancy support
radeon:
- eDP fix for DCE3.2 iMacs
xe:
- add drm_ras netlink error event support
- add memory page offlining support
- introduce error threshold to drm_ras
- fix stale GTT mappings on unmap
- reject page faults for non-page fault mode scratch VM
- enable CRI package and VRAM temperatures
- introduce cold reset recovery
- handle CRI+ power interval encoding
- VF migration for multi-queue
- handle exec queue teardown after hot unplug
- alerts and controller enabling modifications
- use IBCv3 on PTL
- VRAM health check
- report GT TDR and VM rebind faults using SIGID
- add multi_queue_active_lrca debugfs
- shrinker: Runtime PM reference for non-system memory
- guc: Add simple KLV decoder helpers
- debugfs: Expose per-engine idle status
- Keep walking on SVM eviction failure
- Nuke PTs only after unlinking contested VMAs
- limit sg segment size to PAGE_SIZE on Xen PV
- keep VF LMEM bar size low if no VFs
- CPU binds and ULLS on migration queue
- New PTL PCI ID
- Enable PXP for NVL-S
- Do not dma_fence_put zero fences in err_out path
- Refresh TTM LRU on SVM prefetch
- export device UID in sysfs
i915:
- rename GEN6_PCODE_DATA to match spec
- fix incorrect RCU teardown order
- fix potential UAF in command parsing
- avoid WARN splat during RPS boosting race
- use simpler min functions
- Fixes to make i915 work well with PREEMPT_RT
i915/display:
- Enable CMRR (Content Match Refresh Rate) in fixed-RR VRR path
- Switch DG2 MPLL to DPLL framework
- DP-HDMI PCON DSC fixes
- limit invalid joiner combinations
- CDCLK related fixes and refactor around PCODE integration
- Gate UHBR SST SDP splitting on sink caps
- add HDMI TMDS audio bandwidth check
- vswing/preemph override
- enable AS SDP Skip frames
- Handle negative configuration index on DP link caps for robustness
- Preparation for enabling SDR plane color pipeline
- An eDP quirk for HP Pavilion Plus
- Introduce PME (Power Management Event) support on display hotplug
- Handle VSC SDP revision 7 in unpack
msm:
- CI:
- Dropped sc7180 trogdor lazor from the CI
- Core:
- Fixed msm_ioremap for resources without a name
- Changed msm.separate_gpu_kms to default to auto selection
- GPU:
- Enable CLX (Current Limit eXtension) for gen8 to avoid exceeding
limits on CX/GX rails
- New GPUs: a830 (Pakala), a845 (Maili), a850 (Hawi), x2-85
(Mahua)
- Fix VBIF halt mask on a306, which was preventing runpm suspend
- Enable THP support for GEM buffers
- Add modparam to disable waiting on fences in shrinker
- Drop use of drm_prime_sg_to_page_array()
- a5xx: don't read the GPMU registers on GPUs without a GPMU
- a2xx/a3xx/a5xx: hangcheck progress detection
- a6xx: gmuwrapper runpm fix
- Calculate reported GMEM size based on active slices
- Split a6xx/a7xx/a8xx catalog
- DP:
- Picked up some preparation patches for the MST support
- Fixed reported status of the link training
- DPU:
- Fixed CRTC bandwidth computation
- Fixed DSC programming
- Fixed encoder disablement path
- DSI:
- Fixed VM leak in error path
- Indention fix
- MDP5:
- Added MSM8952 configuration
- Dropped incorrect cursor pipe on MSM8976/56
- HDMI:
- Small fixes
nouveau:
- improve runtime PM on R570 GSP firmware
- various fixes throughout the driver
- dispnv50: support 2.147 GHz pixel clock in GB20x
nova:
- add initial uapi concept
- add initial PRAMIN access support
- add GpuMm centralized memory manager
- add GPU VM and BAR1 support
- add GPU interrupts and GSP events support
- GSP messaging fixes
tyr:
- use bitfield!
- zero unsupported and newly added GPU info fields
- limit doorbell array to 17 entries
exynos:
- FIMD fixes
- Fix clock leak on resume error path
- Fix Sparse warnings by adding missing __iomem annotation
- VIDI cleanup
- Replace kmalloc() and copy_from_user() with memdup_user()
amdxdna:
- fix BO handling
- Support AIE2 rev 9
- Fix UAF access in scheduler fences
- Update workqueue interface
- expose busy time via fdinfo
ast:
- support 256-byte EDID
hyperv_drm:
- remove support for pre win10 hosts
komeda:
- fix GLB_CORE_ID usage
omap:
- report HDMI hotplug events to ASoC HDMI codec
panthor:
- provide gpu_cache_flush tracepoint
- improve dma_fence signalling latency
- improve locking
- export scheduling information via debugfs
- Validate user-space input against firmware limits
qaic:
- reject BOs that exceed maximum page count
- add missing include statements
verisilicon:
- fix hardware cursor offsets
vkms:
- implement YUV-to-RGB with fixed-matrix colorop
gma500:
- avoid unsupported ARGB formats in primary plane
hibmc:
- handle vblank interrupts correctly
ivpu:
- add DRM_IVPU_CAP_CMDQ_SET_PRIORITY
- support command-queue priority ioctl
- Simplify NULL-pointer handling in cleanup code
arcpgu:
- replace simple-display pipeline with regular atomic helpers
aspeed:
- replace simple-display pipeline with regular atomic helpers
gm12u320:
- replace simple-display pipeline with regular atomic helpers
imagination:
- various improvement to firmware interaction
- add job to pvr_job_submit_fw trace event
mali-dp:
- fix runtime PM leak
mcde:
- replace simple-display pipeline with regular atomic helpers
p111:
- replace simple-display pipeline with regular atomic helpers
- drop unsupported alpha formats from primary plane
rcar-du:
- support Renesas R-Car V4H DSC
- dsi: Support larger transfers with AXI memory
- Support RZ/G3L SoC
repaper:
- replace simple-display pipeline with regular atomic helpers
rockchip:
- dsi: improve PHY timings
ssd130x:
- support Solomon SSD1351 OLED plus DT bindings
- ssd133x: upgrade color format to RGB565
- ssd132x: Set correct hardware window when clearing screen
tve200:
- replace simple-display pipeline with regular atomic helpers
xen:
- replace simple-display pipeline with regular atomic helpers
v3d:
- improve job handling under perfmon
vc4:
- reliably reset V3D
- drop brcm,vc4-v3d compatible
virtio:
- fix damage handling
- Support ARGB8888 for virtio primary planes.
host1x:
- Support partitioning
imx:
- Replace simple-display with regular atomic helpers
mxsfb:
- Support bus formats plus DT bindings
tegra:
- improve syncobj handling on submit
panfrost:
- add Mali-G68 support
- improve GPU reset handling
rockchip:
- add HDMI 2.0 support to dw-hdmi-qp
- improve HPD handling"
* tag 'drm-next-2026-10-21' of https://gitlab.freedesktop.org/drm/kernel: (2324 commits)
drm/adp: Switch to drm_atomic_helper_connector_create_state
drm/malidp: Convert to atomic_create_state
drm/vc4: Switch to drm_atomic_helper_connector_create_state
drm/sysfb: Switch to drm_atomic_helper_connector_create_state
drm/solomon: ssd130x: Switch to drm_atomic_helper_connector_create_state
drm/imx: ipuv3: Switch to drm_atomic_helper_connector_create_state
drm/hyperv: Switch to drm_atomic_helper_connector_create_state
drm/bridge: megachips: Switch to drm_atomic_helper_connector_create_state
drm/bridge: lontium-lt8912b: Switch to drm_atomic_helper_connector_create_state
drm/arm: komeda: Switch to drm_atomic_helper_connector_create_state
drm/appletbdrm: Fix incorrect error message on encoder attach failure
drm/sun4i: hdmi: Convert to drmm_connector_hdmi_init()
drm/rockchip: rk3066_hdmi: Advertise HDMI 1.4 capabilities
drm/bridge: lontium-lt9611: Advertise HDMI 1.4 capabilities
drm/bridge: ite-it66121: Advertise HDMI 1.2 capabilities
drm/bridge: ite-it6263: Advertise HDMI 1.3 capabilities
drm/bridge: ite-it6263: Drop redundant .mode_valid hook
drm/bridge: inno-hdmi: Advertise HDMI 1.2 capabilities
drm/bridge: adv7511: Advertise HDMI 1.2 capabilities
drm/sched: Document entity->stopped is protected by entity->lock
...
|
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A backward jump is sized from its target's current-pass address and its
own previous-pass address, so it can grow while other jumps shrink. Two
passes may then give the same image length with jumps still changing,
which ends in "bpf_jit: fatal error", and a jump growing in a padding
pass ends in "unexpected jmp_cond padding".
Shift the jump's previous-pass address by how far the current pass has
moved it, so a backward jump is sized by the insns it jumps over, like
a forward one. Also start every insn at BPF_MAX_INSN_SIZE instead of 64,
so none can grow in the first pass. Then no insn grows from one pass to
the next, and a repeated image length means nothing moved. The 123
limit on imm8 offsets worked around that growth and is dropped. The
ja -1 special case is subsumed, such a jump is now imm8 from the first
pass.
Suggested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://patch.msgid.link/20261022-jit_size_fix-v2-1-4bee6921b218@meta.com
|
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clang inlines emit_unwind_ret_addr() and emit_patch() into do_jit() and
folds 'bpf_unwind_target - X86_PATCH_SIZE' into one relocation. It points
to a nop in the padding in front of the function, and objtool complains:
vmlinux.o: warning: objtool: do_jit+0x1330: relocation to !ENDBR: .text+0xc7fab
It's only used to compute rel32 of a direct call, so nothing is wrong at
run time.
emit_rsb_call() does call depth accounting too and hides func from
the optimizer. Use it instead of open coding.
Fixes: cff94a3d78d8 ("bpf, x86: Support unwind_goto and unwind_exit")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build
Link: https://patch.msgid.link/20261021220844.239400-1-alexei.starovoitov@gmail.com
Closes: https://lore.kernel.org/bpf/20261021201456.GA3197963@ax162/
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull IOMMU updates from Joerg Roedel:
"Core:
- Detect scatterlist length overflows and finalize deferred domain
attachments before mapping MSI pages
- Consolidate x86 MSI reserved-region handling and clean up internal
DMA and SVA helpers
AMD IOMMU:
- Add IOMMU PerfOpt support, enabled by amdgpu for supported
integrated GPUs in identity domains
- Restrict forced identity mapping to GPUs that require it
- Fix kdump device-table allocation and reuse, ATS configuration
error handling, and an interrupt-remapping allocation leak
- Clean up device probing and initialization
- Add Vasant Hegde as an AMD IOMMU maintainer
ARM SMMUv2:
- Device-tree binding updates for Qualcomm Maili and Nord SoCs
ARM SMMUv3:
- Work around hardware integration issue on Google Tensor G5 SoCs
where all DMA transactions appear as instruction fetches
- Allow command queue size to be configured on the kernel
command-line
- Reduce queue sizes when running as a kdump kernel
- Fix some pre-existing issues in the driver and kunit tests reported
by Sashiko
- Fix handling of Arm hardware errata relating to the contiguous hint
when using SVA
- Rework the TLB invalidation logic in preparation for enabling
iommu-pt in future
- Minor cleanups in preparation for improving support for kdump
Apple DART:
- Support device-tree DMA aperture specifications
Broadcom:
- Add BCM2712 IOMMU support for Raspberry Pi 5 display and multimedia
devices, including the generic page-table format and shared TLB
cache management
Hyper-V:
- Add a para-virtualized guest IOMMU driver with guest-managed
stage-1 page tables and page-selective IOTLB invalidation
Intel VT-d:
- Enhanced IQE fault handling for batched multiple descriptors,
- Optimization of page-table level calculation in
compute_vasz_lg2_ss(),
- Fixes for several pre-existing issues reported by Sashiko,
- General cleanup and refinement
RISC-V:
- Report cache-coherency capability for coherent devices, enabling
VFIO/iommufd use
Samsung Exynos:
- Support SysMMUs without BLOCK mode, fixing their enable sequence
and TLB invalidation
- Improve v7 fault diagnostics with transaction information"
* tag 'iommu-updates-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (69 commits)
MAINTAINERS: Make Vasant Hegde AMD IOMMU maintainer
iommu/hyperv: Make hv_iommu_device static
iommu/hyperv: Add missing PCI dependency for the guest IOMMU driver
iommu/amd: Don't allocate kdump device table from DMA32
iommu/amd: Program device table when kdump reuse fails
iommu/dma: Clean up redundant MSI cookie check
iommu/dma: Catch scatterlist length overflows
iommu/hyperv: Add page-selective IOTLB flush support
iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
iommu/x86: Add architectural MSI reserved region helper
Drivers: hv: Add logical device ID registry for vPCI devices
hyperv: Introduce new hypercall interfaces used by Hyper-V guest IOMMU
iommu: Make iommu-dma helpers private
iommu/arm-smmu-v3: Don't rb_erase() a never-inserted stream node
iommu/arm-smmu-v3: Add Q_POS() macro
iommu/arm-smmu-v3: Add arm_smmu_attach_release()
iommu/arm-smmu-v3: Disable the impl before disabling the SMMU on shutdown
iommu/arm-smmu-v3: Populate the tlbi at the top of the call chain
iommu/arm-smmu-v3: Precompute the invalidation commands
iommu/arm-smmu-v3: Keep track in arm_smmu_invs if range invalidation is used
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
Pull dma-mapping updates from Marek Szyprowski:
- several SWIOTLB initialization cleanups (Aneesh Kumar K.V, Francesco
Valla)
- exact page allocation for DMA pages (Qingfang Deng)
- tools/dma build fixes (Sasha Levin)
- minor fixes for various corner cases (Marek Szyprowski, Leon
Romanovsky) and code cleanup (John Garry)
* tag 'dma-mapping-7.4-2026-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
dma-debug: Skip cacheline tracking for MMIO mappings
tools/dma: fix building from the top level with O=
tools/dma: fix building with O=
dma: swiotlb: Track whether the pool size was explicitly set
dma: swiotlb: Consolidate slab rounding
dma: swiotlb: Rename swiotlb_size_or_default()
dma: swiotlb: use KiB in restricted pool allocation log
dma-direct: Restore arch_dma_alloc() for the DMA_ATTR_NO_KERNEL_MAPPING case
MAINTAINERS: Add files to the DMA MAPPING HELPERS entry
dma-mapping: use exact allocation for DMA pages
dma-mapping: rename dma_opt_mapping_size()
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Pull vhost,virtio updates from Michael Tsirkin:
"This adds CPR support for vhost.
Plus some fixes, notably for a host of races we had when callback fire
around device reset"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
tools/virtio: add missing device-id/virtio.h wrapper header
vhost/vsock: add VHOST_RESET_OWNER ioctl
vhost: synchronize with RCU readers when freeing workers
vhost/vsock: re-scan TX virtqueue on device start
vhost/vsock: suppress EHOSTUNREACH fast-fail during CPR pause
vhost/vsock: split out vhost_vsock_drop_backends helper
virtio_pci: drop callback sync on reset
virtio_pci_modern: move avq cleanup from reset to del_vqs
virtio: synchronize callbacks after device reset
virtio_vdpa: implement synchronize_cbs()
platform/mellanox: mlxbf-tmfifo: implement synchronize_cbs()
um: virtio_uml: implement synchronize_cbs()
remoteproc: implement synchronize_cbs() for virtio devices
virtio_ccw: always take irq_lock in the classic interrupt handler
virtio_ccw: fix synchronize_cbs() after interrupt fallback
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Commit fbb22ceaaf8f ("powerpc/irq: Make irqstats array based") made
arch_show_interrupts() call irq_proc_emit_counts(). That function lives
in kernel/irq/proc.c, which is only built with CONFIG_PROC_FS, so
kernels without procfs no longer link:
powerpc64-linux-ld: arch/powerpc/kernel/irq.o: in function `arch_show_interrupts':
arch/powerpc/kernel/irq.c:134:(.text+0x4b8c): undefined reference to `irq_proc_emit_counts'
arch_show_interrupts() is only called from irq_seq_show(), which is in
kernel/irq/proc.c as well, so build it only with CONFIG_PROC_FS, as x86
already does.
Fixes: fbb22ceaaf8f ("powerpc/irq: Make irqstats array based")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202609271531.8kf2NTjK-lkp@intel.com/
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull KVM updates from Paolo Bonzini:
"ARM:
- pKVM state isolation: years after pKVM started being enabled
upstream, we finally get the basics in the form of state isolation.
The vcpu state is now off-limit for the host for protected VMs
- pKVM also grows a hypervisor-private memory allocator, allowing it
to deal with sub-page allocation, much like everywhere else
- pKVM also lands a trace_printk() equivalent, which hopefully will
make debugging a bit easier
- First shot at annotating portions of the KVM/arm64 code to be
extracted and built on s390. The real fun is yet to come
- Allow pre-faulting of stage-2 canonical mappings from userspace,
joining x86 and s390 in implementing this feature
- Add a reverse mapping infrastructure for shadow stage-2,
significantly improving performance when MMU notifiers kick in, and
avoiding full unmap of all shadow tables for this VM
- Next step of GICv5 enablement, adding support for the IRS block,
and providing both SPI and LPI support. This is the first point
where KVM/arm64 can support an SMP GICv5 guest
- As a preliminary to eventually enabling CCA, add a bunch of
infrastructure to KVM/arm64, splitting some of the basic operations
into individual backends (normal VM, normal pKVM VM, protected pKVM
VM). This allows CCA to later slot in without polluting the rest of
KVM with its firmware-driven nonsense
- Make ID registers immutable from the point where a vcpu is able to
run, even if it fails to run. This prevents KVM from sampling
untrusted values
- Restore some type checking to the EL2 object. KVM/arm64 originally
had some strong type checking between the kernel and the EL2
object, but lost it along the way when the private hypercall
interface was (somewhat pointlessly) converted to SMCCC. Type
checking is back, syscall style, and with added sparse goodies
- Expand the FFA support to FFA_NOTIFICATION_*, and add some
sanitisation of the protocol that pKVM relays to the "trusted"
runtime
- Make GICv3 RD assignment more robust to userspace nonsense
- Convert the remaining MMU fault handler backends to
kvm_s2_fault_vma_info and co., fixing a number of bugs in the
process
- Fix the SError/SEA selftests to be both more robust and less
braindead
- Fix a smattering of documentation bugs, some of them as a result of
our AI friends spitting out credible assertions based on
non-existing symbols
- The usual collection of low impact bug fixes (SMCCC, timers, PMU)
Loongarch:
- Add separate vmid support
- Simplify MSI interrupt injection
- Add crash hypercall support
- Allow to set pv_feature until vCPU run
- Enable HW page table walk automatically in selftests
s390:
- rework page allocation for secure guest variable storage
- Selftests and documentation improvements
- Replace get_zeroed_page with kzalloc
- Fix corner cases of floating interrupt injection
- Initial arm64 on s390 support
x86:
- Clean up the handling of vcpu->arch.xen.long_mode to be consistent
and correctly handle 32-bit/64-bit alignment, and various other bug
fixes have accumulated over the months since v1
- Grab KVM's SRCU "lock" in kvm_zap_gfn_range() to fix a recurring
bug where callers fail to do so
- Fix a variety of issues in the pre-fault code that are mostly
benign in the current code base, but will show up in big ways
if/when the pre-faulting logic is used to implementing
prefetch-on-fault for the TDP MMU
- For PREEMPT_RT=y kernels, drop the rmaps' individual bit-spinlock
and just walk the rmaps' with mmu_lock taken. On the write side
(which always uses mmu_lock), the bit-spinlock was assuming that
preemption was disabled, but that is *not* true when rwlocks become
sleepable
- Prepare a memory_fault exit (paired with -EFAULT) when KVM hits an
error PFN, e.g. so that userspace can resolve transient issues
instead of killing the guest. Convert a variety of WARN()+EFAULT
paths into KVM_BUG_ON()+EIO so that KVM can hard commit to filling
memory_fault on -EFAULTs that occur in the page fault path
- Fix a NX hugepage un-accounting bug where KVM would always uncharge
the shadow MMU, even when handling TDP MMU pages
- Mask off the address space ID when checking for illegal usage of
kvm_set_internal_memslot() to prevent false negatives on the sanity
check
- Explicitly zero reserved flags when delivering a SynIC message to
avoid leaking a byte of stack information to the guest
- Rework TDX's handling of the canonical MMU root level to not rely
on userspace to fill CPUID correctly, as doing so lets userspace
trivially trigger a KVM_BUG_ON()
- Reject KVM_SET_NESTED_STATE if userspace "restores" L1 with
EFER.LMA=1 && EFER.LME=0, which confuses KVM into trying to
configure an 64-bit MMU without PAE
- Ignore EFER.LMA (clear it from KVM's cached save state) if
EFER.LME=0 when preparing L2 state, to fix another way to confuse
KVM's MMU (and because real hardware also ignores EFER.LMA)
- Improve KVM's sanity checks for a misconfigured MMU to (hopefully)
detect all of the ways KVM can botch EFER.LMA vs. CR4.PAE
- Remove the "full" out-param from kvm_x86_ops.flush_tlb_gva() as the
param is only used to avoid what effectively amounts to a single
memory write
- Fix a mostly-benign bug where KVM can write through a guest's
read-only mapping due to not checking the error code when
expediting emulated MMIO page faults
- Honor the guest's view of the "EFER.LMSLE must be zero" defeature
so that userspace can provide migration compatibility between Rome
and Milan+
- Pend a KVM_REQ_EVENT request when an exception is morphed into a
nested VM-Exit, otherwise KVM can fail to actually deliver the
nested VM-Exit, e.g. when injecting a page fault
- Add support for PML on SVM
- Add support for virtualizing Bus Lock Detect on SVM, and fix a
number of DR6 bugs and warts along the way
- Fix a variety of warts in KVM's handling of guest TSC, kvmclock,
and timekeeping in general, as a (big) first step towards
addressing several longstanding problems with the kvmclock
implementation. Most notably, fix a precision issue where
get_kvmclock_ns() computed the clock from the *host* TSC without
applying guest TSC scaling, causing systemic drift from the values
the guest computes from its own TSC
- Rip out KVM's shadow timekeeping structures, now that ktime
snapshots are powerful enough to replace it
- Misc fixes and cleanups
x86 (AMD):
- Fix a benign-in-practice bug where KVM unintentionally sets a
non-zero error code when delivering exceptions to SEV-ES+ guests
- Force a new ASID in both VMCBs on pCPU migration to fix a bug where
KVM can run a VMCB with a stale ASID due to the tracking being
per-CPU, not per-VMCB
- Return INVALID_INPUT to the guest instead of exiting to userspace
with -EIO if KVM can't access "guest request" buffer, i.e. try to
keep the guest alive if the guest or userspace goofs
x86 (Intel):
- Enable Notify VM-Exits (now called Instruction Timeout in the SDM)
and Bus Lock VM-Exits for TDX guests when they're enabled by
userspace (KVM forgot to wire up the TDX Module knobs)
- Move all common (between VMX and TDX) APIs/helpers to
common.h/main.c, and change all namespace prefixes from "vmx" to
"vt"
- Fix a thankfully benign bug (due to other areas of KVM being
hardened) where userspace can bypass INIT_MEM_REGION's address wrap
check by providing a nr_pages that will overflow a u64 when
converted to bytes, and fix an also- benign off-by-one bug in the
check (inclusive vs. exclusive)
- Set the vmcs.GUEST_ACTIVITY_STATE back to ACTIVE when userspace
sets KVM's mp_state to anything other than HALTED, e.g. so that a
vCPU doesn't get stuck in HLT if userspace emulates RESET
guest_memfd:
- Take the invalidate lock when unbinding a dying file to fix a race
with kvm_gmem_invalidate_end() that results in KVM leaving the MMU
invalidation count elevated. Not taking the lock in the first place
was pure misguided paranoid
- When binding a memslot, purge the bindings if storing the new
memslot fails, as Xarray's "store range" API can subtly fail
partway through
- Establish memslot<=>guest_memfd bindings *after* the memslot is
ready, as the memslot becomes reachable the instant the binding is
installed
- Don't grab a page refcount when reloading an SNP VMSA and stop
returning a "struct page" from guest_memfd's PFN lookup altogether,
to ensure that KVM doesn't hold any unnecessary refcounts (the
lifetime of the page is ensured by MMU notifiers and similar
hooks). Preventing unnecessary refcounts greatly simplifies
supporting in-place SHARED=>PRIVATE conversions
- Add support for in-place PRIVATE<=>SHARED conversion, i.e. allow a
single guest_memfd instance to be used for both PRIVATE and SHARED
variations of CoCo guests' memory (though not at the same time).
This eliminates the need to double allocate guest memory for TDX
and SNP, and is basically a hard requirement for pKVM, which relies
on being able to preserve memory contents on conversions
- Hack-a-fix a deadlock bug in ->error_remove_folio() by returning
-EBUSY if the filemap invalidate lock is contended. Punt on a
proper fix for the moment, as a proper fix likely involves
reworking truncate_error_folio()
- Add a pile of selftests for in-place conversions
- Misc guest_memfd cleanups
Generic:
- Move some configuration items to preprocessor symbols, to help with
arm-on-s390's need to compile the same code twice with different
values
- Allow KVM implementations to choose alternative device names, also
for s390's support of ARM virtualmachines
- Switch the KVM-VFIO interface and external consumers over to
standard file-based reference counting, eliminating all external
KVM symbol exports
Selftests:
- Rework KVM selftest's handling of memory regions all so that PPC
can force its page table allocations to be naturally aligned
- PPC support
- Fix emulation of VMPTRST and VMPTRLD when eVMCS is in-use to match
real Hyper-V's behavior
- Saturate L2's TSC frequency if stacking L1 and L2 scaling
multipliers exceeds what hardware supports, as attempting to run L2
with an illegal multiplier will either cause VM-Entry to fail (VMX)
or trigger a #GP when writing MSR_AMD64_TSC_RATIO (SVM). The #GP is
thankfully benign in the grand scheme as even "unsafe" WRMSRs have
exception fixup
- Rework KVM selftest's handling of memory regions so that PPC can
force its page table allocations to be naturally aligned
- Clean up selftest's VMX instruction helpers, and drop an absurd
number of completely useless return values, e.g. functions that
unconditionally return %true and then have every caller assert
success
- Add selftests support for Zhaoxin CPUs
- Overhaul the TSC scaling test to add a regression test for the
saturation behavior, and to increase its coverage in general
- Fix selftests usage various NUMA syscalls to account for an
undocumented, but known since 2007, off-by-one kernel bug. Add
helpers to try and avoid re-introducing the same flaws in the
future
- Automatically run xAPIC IPI migration test (between NUMA nodes)
when possible, as the entire point of the test is verify KVM's
handling of page migration of the APIC backing page
- Misc cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (506 commits)
KVM: always make in-place conversion a compile-time constant when possible
KVM: x86: leave the legacy private attribute in for TDX and SEV
KVM: split CONFIG_KVM_PRIVATE_MEMATTR_VM out of KVM_VM_MEMORY_ATTRIBUTES
selftests: kvm: remove useless comma operator
arm64: Use proper include variant
MAINTAINERS: Add entry for ARM on s390 KVM
KVM: s390: arm64: Integrate arm on s390
KVM: s390: arm64: Implement basic page fault handler
KVM: s390: arm64: Implement vCPU IOCTLs
KVM: s390: arm64: Implement vm/vcpu create destroy
KVM: s390: arm64: Implement required functions
KVM: s390: Add basic arm64 kvm module
s390/hwcaps: Report SAE support as hwcap
KVM: s390: arm64: Introduce host definitions
s390: Introduce Start Arm Execution instruction
KVM: s390: Use arm64 code
s390/tools: Use arm64 headers
KVM: s390: Use dedicated function for migration mode
s390/Kconfig: remove PCI dependency from HAS_IOMEM
KVM: s390: Kick PV cpus at the right time for service irqs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
"Major changes:
- Introduce scalar evolution (SCEV) analysis in the verifier.
It infers how registers and stack slots change in a loop and lets
the verifier check bounded loops with induction variables as ranges
instead of walking every iteration. The number of processed insns
drops ten fold in programs with loops (Eduard Zingerman)
- Add 'callx' instruction: indirect call of a static BPF subprogram.
The address is taken with ld_imm64 or loaded from read-only data.
Supported by x86-64, arm64 and riscv64 JITs (Alexei Starovoitov, Pu
Lehui)
- Add unwind_goto and unwind_exit instructions, so that Rust panic or
C++ exception can run destructors of every frame it passes through.
The normal path is free of unwind code. Supported by x86-64 and
arm64 JITs (Alexei Starovoitov)
- Support programs compiled by rust-bpf: treat load and store through
a number as arena access with BPF_F_ARENA_SCALAR, accept rust names
in BTF (Alexei Starovoitov)
- Raise BPF program stack size from 512 bytes to 2 KiB on x86-64 and
arm64 (Kumar Kartikeya Dwivedi)
- Support struct, union and __int128 up to 16 bytes passed and
returned by value in BPF subprograms and kfuncs, and fix x86-64 and
arm64 trampolines for such arguments (Yonghong Song)
- Introduce a common way to attach struct_ops to a cgroup via
bpf_link. bpf_tcp_ops is the first user and mirrors TCP sock_ops
callbacks (Martin KaFai Lau, Amery Hung)
- Describe inlined functions in BTF. New kinds tell where the inline
sites are and how to fetch the arguments there.
CONFIG_DEBUG_INFO_BTF_INLINE keeps it apart from the main BTF in
.BTF.inline section or in btf_vmlinux_inline.ko (Alan Maguire)
- Fix many memory safety, lifetime and locking bugs in BPF core,
verifier, iterators, local storage, dynptr, devmap, cpumap and
seg6local (Josef Bacik, Alexei Starovoitov)
- Diff stat is dominated by selftests and by removal of
lib/test_bpf.c. Its 16k lines of instruction tests were converted
to BPF selftests that BPF CI runs on every architecture it covers
(Daniel Borkmann)
Other features and fixes:
- Add KASAN checks to memory accesses of JITed programs on x86-64
(Alexis Lothoré)
- Complete unification of helper, kfunc and subprog argument checks
in the verifier (Amery Hung)
- Add bpf_copy_from_user_mm[_str]() kfuncs (Anastasios Papagiannis)
- Various features and fixes (Daniel Borkmann):
- Add .bpf keyring for program signature verification, modelled
after dm-verity keyring, and support ML-DSA in signing tools
- Emit shorter and faster code in x86-64 JIT for patterns that
LLVM generates
- Fix various issues in gotox handling
- Let BPF LSM set xattrs at inode creation with bpf_inode_init_xattr()
(David Windsor, Daniel Borkmann)
- Use sleepable page allocation in sleepable arena paths. Fix races
between arena free, allocation and user page fault (Emil Tsalapatis)
- Switch BPF crypto from lskcipher to AES-CBC and AES-ECB libraries
(Eric Biggers)
- Add bpf_proactive_reclaim() kfunc (Hui Zhu)
- Render decl_tags in libbpf btf_dump and add tests for bpftool C
dump (Ihor Solodrai)
- Speed up tracing_multi attach on x86 (Jiri Olsa)
- Various features and fixes (Kumar Kartikeya Dwivedi):
- Add BPF_PROG_STREAM_OPEN command to read BPF streams through a
file descriptor with poll support
- Let kernel structs publish arena pointers with __arena type tag
- Fix __uninit kfunc output buffers and fastcall rewrite with
indirect stack accesses
- Refuse CO-RE relocations for signed programs
- Add enqueue_rcvq and dequeue_rcvq hooks to bpf_tcp_ops to adjust
sk_rcvlowat and avoid unnecessary wakeups (Kuniyuki Iwashima)
- Add bpf_ksock_sendto() kfunc and allow ksock connect and send from
bpf_wq (Mahe Tardy)
- Fix racy plt target update in arm64 bpf_arch_text_poke()
(Matthew Wood)
- Restructure BPF selftests Makefile as a layered build
(Mykola Lysenko)
- Speed up hash map lookups for u32 and u64 keys (Mykyta Yatsenko)
- Add signed div/mod, movsx, bswap and gotol to MIPS JITs, signed
div/mod to parisc JITs (Nicholas Dudar, Johan Almbladh)
- Fix stack overflow in build ID parser on 32-bit (Nickolai
Zeldovich)
- Add stack arguments, signed arena loads and gotox to riscv64 JIT.
Pu Lehui is now co-maintainer of riscv BPF JITs (Pu Lehui, Chen
Pei, Feng Jiang)
- Add bpf_call_rcu() and bpf_call_rcu_tasks_trace() kfuncs. Support
fetching and/or/xor atomics in arena on x86-64 (Puranjay Mohan)
- Fix flaky selftests, selftests with clang 23 and bpf-gcc
(Qiliang Yuan, KaFai Wan, Vineet Gupta)
- Fix builds broken by fatal resolve_btfids warnings, BTF generation
on ARC, and define arch_cmpxchg_local() on arc, hexagon and
openrisc (Sasha Levin)
- Reduce memory use of hash maps by up to 50% per element
(T.J. Mercier)
- Mark pointer fields of sched_ext ops arguments as trusted (Tejun
Heo)
- Remove legacy bpf_asm, bpf_dbg and bpf_jit_disasm tools (Xia Yan)
- Fix index overflow in queue and stack maps, arena range tree after
allocation failure, tail call loop after freplace detach, lost
signal in bpf_send_signal() (Yuan Chen)
- Many more fixes and cleanups"
* tag 'bpf-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (660 commits)
selftests/bpf: Time tc_edt from its first packet with data
selftests/bpf: Test unwind_exit of an exception callback
selftests/bpf: Tests for 32-bit scalar evolution bounds computation
bpf: Reject unwind_goto and unwind_exit in offloaded progs
bpf: Support 32-bit linear scalar evolution
bpf: Make unwind_exit of an exception callback exit in JITs
selftests/bpf: Test forbidden bpf_ksock_sendto() LSM attach
selftests/bpf: Test ksock sendto()
bpf: Add bpf_ksock_sendto() kfunc
selftests/bpf: Test unwinding from R0: R2 subprog
selftests/bpf: Add a C++ prog with exceptions
selftests/bpf: Add tests for unwind_goto and unwind_exit
bpf, arm64: Support unwind_goto and unwind_exit
bpf, x86: Support unwind_goto and unwind_exit
bpf: Add unwind_goto and unwind_exit insns
tools/bpf: Remove legacy BPF tools
bpf: Annotate data races on bpf_lru_node type
selftests/bpf: Add arena allocation race tests
bpf: Fix arena race between page free and alloc leading to incoherency
bpf: Revalidate faulted arena pages before installing user mappings
...
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git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull module updates from Petr Pavlu:
- Ignore local labels and mapping symbols during module load
These symbols were already ignored during kallsyms address-to-symbol
lookups. Filter them out earlier during module loading to reduce
lookup overhead and prevent them from appearing in /proc/kallsyms.
- Fix potentially incorrect access of SetOnce<T> when setting Rust
module parameters.
- Fix a potential read of an uninitialized count when printing taint
information for unloaded modules.
- Allocate the kmod argument array using kmalloc_array() in preparation
for conversion to type-aware allocators.
- Clean up includes in linux/kmod.h
Add explicit includes of linux/umh.h to files that use usermode
helpers. Then clean up the #include list in linux/kmod.h, notably
removing the compatibility linux/umh.h include.
- Remove the error-injection.h include from linux/module.h
Add explicit includes of linux/error-injection.h to files that use
the ALLOW_ERROR_INJECTION() macro and currently rely on it being
provided indirectly via linux/module.h. Then remove the unnecessary
linux/error-injection.h include from linux/module.h.
- Replace __MODULE_STRING() with __stringify() in various drivers in
preparation for removing the former macro.
* tag 'modules-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
drivers: Replace __MODULE_STRING() with __stringify()
module: Fix uninitialized count read of unloaded taint tracking record
rust: module_param: Fix potentially incorrect access of `SetOnce<T>`
module: Remove the error-injection.h include from linux/module.h
drm/xe: Include error-injection.h for ALLOW_ERROR_INJECTION()
drm/i915: Include error-injection.h for ALLOW_ERROR_INJECTION()
syscalls: Include error-injection.h for ALLOW_ERROR_INJECTION()
net: Include error-injection.h for ALLOW_ERROR_INJECTION()
block: Include error-injection.h for ALLOW_ERROR_INJECTION()
module: Bring includes in linux/kmod.h up to date
time/jiffies: Include linux/sysctl.h for proc_int_u2k_conv_uop(), ...
umh, treewide: Explicitly include linux/umh.h where needed
modules/kmod: Allocate argv with kmalloc_array()
module/kallsyms: Ignore local labels and mapping symbols during module load
module/kallsyms: Refactor current symbol filtering into is_core_symbol()
module/kallsyms: Rename is_mapping_symbol() to is_ignored_kernel_symbol()
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "selftests/mm: improve khugepaged coverage" (Kiryl Shutsemau):
Give khugepaged a proper workout. Extend the tests to all supported
mTHP orders, check exactly which windows collapsed, and make scan
completion deterministic. Race collapse against faults, pinning, fork
and remap; verify that the contents survive.
Add coverage for whole-page-table zaps and memory pressure too.
- "selftests/mm: separate GUP microbenchmarking from functional testing"
(Sarthak Sharma):
Untangle GUP benchmarking from correctness testing. Move the
benchmark into tools/mm, add a standalone harness-based GUP selftest,
and move shared helpers into tools/lib/mm. Give each tool one job
instead of mixing timing measurements with correctness checks.
Cover the mapping, pinning and batch-size combinations explicitly.
- "mm: Switch device DAX to section-based vmemmap optimization" (Muchun
Song):
Apply section-based vmemmap optimization to device DAX. Rework the
backing metadata layout to save memory while preserving the handling
of device memory hotplug and its different alignment and lifetime
requirements.
- "mm: Introduce section-based vmemmap optimization for HugeTLB"
(Muchun Song):
Cut the memory consumed by HugeTLB's struct page array with
section-based vmemmap optimization. Arrange the metadata so large
huge pages need fewer backing pages, while keeping initialization,
teardown and the various hugepage configurations straight.
- "mm/huge_memory: clean up and decouple the anon and file split
helpers" (Kairui Song):
Separate anonymous and file-backed folio splitting, which have rather
different locking and bookkeeping requirements. Move the work into
separate helpers, drop dead checks and tidy swap-cache handling. Fix
error paths, including one that could leave a folio frozen.
Keep the swap cache cases separate from file-cache splitting.
- "mm: Unconditional per-VMA locks and cleanups" (Dave Hansen):
Make per-VMA locking unconditional and clean up the old conditional
code around it. This removes configuration-dependent plumbing and
lets callers depend on one locking model rather than carrying both
cases along.
- "memcg: remove the v1 soft limit" (Shakeel Butt):
Remove the old cgroup v1 memory soft-limit machinery. This has long
since been superseded by the newer memory-control interfaces; hauling
around a separate reclaim scheme for it no longer buys us much.
- "read proc/pid/smaps_rollup under per-vma lock" (Suren Baghdasaryan):
Read /proc/PID/smaps_rollup using per-VMA locks where possible,
rather than holding mmap_lock across the entire walk. Retain the
contention fallback and add tearing tests. This considerably reduces
latency when another thread is busy changing its mappings.
- "mm/damon: introduce data access-as-a-data attribute" (SJ Park):
Teach DAMON to expose memory access observations as data attributes,
making them available to the probe and filtering machinery. Extend
the interfaces, documentation and tests so the new information can be
used rather than merely collected.
- "Remove PG_private by using page/folio->private checks instead" (Zi
Yan):
Get rid of PG_private and use the folio's private pointer to say
whether private data is attached. Convert the filesystem users,
including erofs, f2fs and md, and clean up the old accessors and
flags. There are a few special cases, notably swapcache and hugetlb,
which need explicit care.
- "mm: make userland page table freeing RCU-safe" (Lorenzo Stoakes):
Make freeing userspace page tables safe against RCU readers. Sort out
the page-table lifetime and locking rules so walkers cannot stumble
over freed tables while mappings are being torn down.
- "make unused huge shrinker memcg aware" (Qi Zheng):
Make shmem's unused-huge-folio shrinker aware of memory cgroups, so
reclaim can find those folios under the right memcg. Wire up the
per-memcg tracking and its lifetime rules, and give the shrinklist
its own lockdep class to avoid spurious dependency reports.
- "mm: Drop pxd_ERROR()" (Anshuman Khandual):
Remove the old pxd_ERROR() page-table checks and their
architecture-specific baggage. Simplify the common page-table
interfaces and callers now that these checks no longer serve a
useful purpose.
- "memcg: group struct fields by access pattern" (Shakeel Butt):
Rearrange memcg's hot and cold fields according to how they're
actually accessed. Keep frequently updated counters and their
neighboring state from fighting over cachelines and reduce needless
cacheline traffic.
- "mm/damon/core: fix the size charged for a filter-trimmed region"
(Donggeun Yoo):
Fix DAMOS quota accounting when a filter trims a monitoring region.
Charge only the part left after filtering, not the original region,
and add KUnit coverage. Previously the excluded memory could eat into
the quota and make schemes run more slowly than requested.
- "mm/damon: add kunit and selftests for probes and probe weights" (SJ
Park):
Add more tests for DAMON probes and their weights, including
validation and the results reported to userspace. This is mostly
about catching regressions in the newer probe infrastructure before
they become harder to diagnose.
- "mm: memcontrol: constify the read side of the read side of the memcg
API" (Tal Zussman):
Mark the read-only parts of the memcg interface const, from folio and
lruvec accessors to counters and swap helpers. Most of this is
mechanical, but it makes the contracts clearer and lets the compiler
catch accidental writes.
- "mm/damon/vaddr: support {prep,apply}_probes" (SJ Park):
Support the new prepare/apply probe operations in DAMON's
virtual-address backend. This brings vaddr monitoring into line with
the probe infrastructure and makes the added probe types useful there
too.
- "mm/mglru: clean up folio counters and flag usage" (Kairui Song):
Simplify MGLRU's folio counters and flag handling. Remove redundant
accounting paths and make the state transitions easier to follow
without changing the intended reclaim policy.
- "arch, mm/execmem: resolve confusion about set_direct_map_valid_noflush()"
(Mike Rapoport (Microsoft)):
Clarify and straighten out the set_direct_map_valid_noflush()
interface across architectures and execmem. Make the requested
mapping changes and the callers' expectations agree, rather than
relying on subtly different architecture behavior.
- "mm: zswap: free cold writeback folios promptly" (Alexandre Ghiti):
Free zswap writeback folios as soon as their disk write completes.
They are cold temporary buffers, so putting them on the LRU only
makes reclaim rediscover them later. Extend swap-cache dropbehind and
let zswap keep these folios off the LRU altogether.
- "mm: gup: cleanup gup_fast call chain" (Aristeu Rozanski):
Clean up the GUP-fast call chain and simplify how the fast-path
helpers pass their arguments and results around. Keep the page-pin
behavior the same while making the call sequence easier to maintain.
- "mm: optimize zone-device memmap initialization" (Li Zhe):
Speed up initialization of zone-device struct pages. Avoid redundant
work when setting up large device-memory ranges, where touching every
descriptor can get expensive.
- "mm/zswap: shrink zswap_entry via a pool id" (Jianyue Wu):
Reduce the size of zswap_entry by storing a compact pool identifier
instead of a full pointer. Keep the pool lookup and lifetime handling
correct while saving per-entry metadata.
- "mm/damon: support access monitoring of hugetlb-backed memory"
(Krishna Iyer):
Let DAMON monitor hugetlb-backed memory too. Extend the relevant
access checks and add coverage so those mappings no longer fall
through a hole in the monitoring machinery.
- "mm/execmem: fixes and cleanups for the ROX cache" (Mike Rapoport):
Tidy execmem's read-only-executable cache and fix its handling of the
awkward allocation and release cases. The aim is to make the cache's
ownership and permission transitions more predictable.
- "zsmallc: remove old object read API" (Sergey Senozhatsky):
Drop zsmalloc's old object-read API and move its remaining users to
the supported access mechanism. This removes a duplicate interface
which we no longer need.
- "mm/mempolicy: stop copying state in the interleave paths" (Gregory
Price):
Stop copying mempolicy state in the interleave paths when a reference
to the existing policy will do. This avoids extra work and makes the
ownership rules less obscure.
- "mm/mglru: speed up inc_min_seq() and fix cold/hot inversions" (Barry
Song):
Make MGLRU's generation advancement cheaper and fix cases where cold
and hot folios end up in the wrong order. Adjust the counter and list
handling so reclaim doesn't keep passing over the better eviction
candidates.
- "mm: Fix MF_DELAYED handling on memory failure" (Lisa Wang):
Treat MF_DELAYED as a partially completed memory-failure operation,
not an outright failure. Propagate that result correctly through
shmem and the generic handler, fix the extra-reference accounting,
and add tests for the resulting SIGBUS behavior.
- "tools/mm/page_owner_sort: fix --sort, add module filter, improve
usage" (Ye Liu):
Fix page_owner_sort's --sort handling, add module-based filtering and
make the usage output more helpful. This makes the tool less
frustrating when tracking down who is holding on to pages.
- "mm/damon: move damos filter range arguments validation to core" (SJ
Park):
Move DAMOS filter range validation into the core, where all callers
can share it. Also close the sysfs read-twice races which could pass
inconsistent ranges, and add tests for invalid input.
- "mm/damon: misc cleanups" (Zenghui Yu):
Clean up a collection of small DAMON rough edges in the core,
interfaces and tests. No large behavior change here, just simpler
code and fewer opportunities for confusion.
- "mm/damon: cleanup code, add test cases, and update guidances in
docs" (SJ Park):
Clean up DAMON's core and interfaces, add missing test cases and
bring the documentation into line with the code. These changes should
make the newer facilities easier to understand and maintain.
- "mm/damon: introduce hugepage_size probe filter" (SJ Park):
Add a DAMON probe filter for hugepage size. Let users select a range
of folio sizes through sysfs, validate the range and document the new
interface, so monitoring can concentrate on memory backed by the
desired hugepage sizes.
- "selftests/mm: pagemap_ioctl test fixes and cleanups" (Zenghui Yu):
Fix some pagemap ioctl test assumptions and clean up their setup and
reporting. Make failures point to the operation that went wrong
rather than to test harness bookkeeping.
- "mm: avoid large folio splits when swap is unavailable" (Johannes
Weiner):
Avoid splitting large folios merely to attempt swap when no swap
space is available. There is little point paying for an expensive
split when reclaim cannot actually swap the resulting pages out.
- "mm: workingset: fix the shadow node budget under MGLRU" (Hui Zhu):
Fix the workingset shadow-node budget with MGLRU enabled. Keep the
shadow entries within the intended limits so refault tracking does
not quietly consume more metadata than it should.
- "selftests/mm: TAP output and global-state fixes" (Song Hu):
Fix selftests which produce misleading TAP output or fail to restore
global settings after a run. A test ought to leave the system as it
found it, particularly when a whole suite follows behind.
- "mm: remove page_swap_entry()" (Tal Zussman):
Remove page_swap_entry() and convert its remaining users to the folio
and swap-entry helpers. Lose an old page-level interface and make the
swap paths a little more consistent.
- "mm: refactor zonelist constructors and iterators" (Gregory Price):
Refactor the zonelist construction and walk helpers to reduce
duplicated logic. Keep the allocation ordering rules intact while
making it clearer how zones are selected.
- "mm: kmemleak: batch the struct page scan" (Breno Leitao):
Scan adjacent struct pages in batches instead of taking kmemleak_lock
once for every single page. This preserves scan coverage and the
lock-hold bound, while cutting overhead substantially on debug
kernels.
- "mm/damon: misc improvements in tests and documents" (Zenghui Yu):
Fix some DAMON selftests which leave kdamond running or fail under
Python safe-path mode, and improve the KUnit coverage and
documentation. Nothing especially glamorous, but these are worth
doing.
- "mm/damon: introduce probe_hits_wsum DAMOS core filter" (SJ Park):
Add a DAMOS core filter using weighted probe-hit counts. This gives
schemes another way to select regions based on what the monitoring
probes observed.
- "mm/mglru: fix ineffective memory protection for non-kswapd reclaim"
(Ridong Chen):
Fix MGLRU's memory protection handling for reclaim outside kswapd.
The protection settings weren't having the intended effect in these
paths, leaving protected memory more exposed than requested.
- "mm/damon: improve readability, clarity and test coverage" (SJ Park):
Simplify a handful of DAMON core helpers, clarify their behavior and
expand test coverage. There are no intended userspace-visible changes
in this batch.
- "mm: replace PF_KCOMPACTD/PF_KSWAPD with kthread_func()" (Kefeng
Wang):
Stop identifying reclaim and compaction workers through the PF_KSWAPD
and PF_KCOMPACTD task flags. Use their kthread functions instead and
remove the redundant flag plumbing.
- "mm/hugetlb: fix surplus accounting and availability checks during
demotion" (Longlong Xia):
Fix HugeTLB surplus accounting and availability checks when demoting
huge pages. Keep the counters and reservation decisions consistent as
one huge page turns into several smaller ones.
- "mm/damon: add kunit tests for probe_hits handling and probe params
validation" (Jason Angelov):
Add KUnit tests for DAMON probe-hit handling and invalid probe
parameters. These cover edge cases that were too easy to miss in
ordinary monitoring tests.
- "mm/damon: fix misc bugs in kunit, quota goals and sysfs refresh_ms"
(SJ Park):
Fix a few DAMON bugs in KUnit tests, quota-goal handling and the
sysfs refresh interval. Small fixes, but the incorrect results and
control behavior were real.
- "mm: zswap: optimize zswap invalidate and store" (Kefeng Wang):
Simplify zswap's invalidate and store paths to avoid avoidable
lookups and work. Keep the entry lifetime rules intact while making
those frequent operations cheaper.
- "mm: replace custom ratelimiting logic" (Pedro Falcato):
Replace hand-rolled MM rate limiting with the common kernel helpers.
There is no need to maintain another local version of the same
mechanism.
- "mm/vmalloc: minor cleanups" (Ye Liu):
Tidy some vmalloc initialization and reporting code, and pull
duplicated vmap-area insertion work into a helper. No functional
changes are intended.
- "mm/mglru: clean up isolate_folios for readability and clarity"
(Ridong Chen):
Clean up MGLRU's isolate_folios() so the decisions are easier to read
and verify. Keep reclaim behavior unchanged while removing
unnecessary twists in the control flow.
- "Catch automatic storage in IDA and Maple Tree definitions" (Yury
Norov):
Catch IDA and maple-tree definitions placed in automatic storage
where the lifetime rules are wrong or easy to get wrong. Add checks
so such mistakes are harder to slip through unnoticed.
- "mm, swap: some random fixes and cleanups" (Kemeng Shi):
Fix and simplify a few unrelated swap paths, removing redundant work
and tidying up error handling. A small collection of things which
were better fixed than left lying around.
- "mm/page_io: folio conversion cleanups" (Tal Zussman):
Finish some page-to-folio conversions in swap I/O, removing obsolete
wrappers and using folio operations consistently. The I/O behavior is
intended to remain the same.
- "mm/swap: skip empty clusters in the swapoff scan" (Youngjun Park):
Skip empty swap clusters during swapoff instead of walking slots
which have nothing to release. This avoids pointless work on sparsely
used swap devices.
- "mm: trace: decode architecture-specific VMA flags" (Meijing Zhao):
Teach the VMA trace output to decode architecture-specific flags,
rather than leaving them as unexplained bits. That should make
tracing a good deal more useful when debugging unusual mappings.
- "mm, swap: don't spin on a bad swap entry" (Breno Leitao):
Stop repeatedly retrying a swap entry which is already known to be
bad. Make the error path terminate cleanly instead of wasting CPU
chasing an entry that cannot be used.
- "mm/page_isolation: fix UBSAN shift-out-of-bounds in
isolate_single_pageblock" (Qi Xi):
Fix an out-of-range shift in isolate_single_pageblock() and tighten
its associated boundary handling. UBSAN found the issue; the result
should be more robust pageblock isolation.
- "mm: khugepaged: fix tracepoint UAF" (Vernon Yang):
Fix a use-after-free in khugepaged tracepoint handling. Make sure the
information recorded by tracing stays valid for as long as the trace
event needs it.
- "mm/damon: fix DAMOS bugs in core, paddr and vaddr" (SJ Park):
Fix several DAMOS problems across the core and physical- and
virtual-address backends. The changes close error cases and bring the
implementations back into agreement.
- "mm/hugetlb_cgroup: move the per-node usage along with the folio"
(Hongfu Li):
Move HugeTLB per-node usage accounting when folios migrate between
nodes or are reparented to another cgroup. Otherwise numa_stat can
retain stale charges and even underflow when the folio is freed.
- "docs/core-api: memory-allocation: add k[mz]alloc_obj() and clarify
kmalloc" (Mike Rapoport):
Document the typed k[mz]alloc_obj() allocation helpers and clear up
some kmalloc guidance. Make it easier for callers to choose the right
interface.
- "selftests/mm: Validate selections and scope memfd_secret setup"
(Tianyi Chen):
Check selftest selections before running and confine memfd_secret
setup to the cases that actually need it. Avoid confusing failures
caused by the test harness itself.
- "mm/damon: move zero damos quota target_value handling to the core
layer" (SJ Park):
Handle a zero DAMOS quota goal target in the core rather than making
each user of the interface invent its own rule. Keep quota decisions
consistent across callers.
- "mm/damon: Introduce a huge page collapsing mechanism using auto
tuning" (Asier Gutierrez):
Add an auto-tuned DAMON mechanism for collapsing huge pages. Use
monitoring feedback to decide when collapse is worthwhile rather than
forcing one fixed policy onto every workload.
- "kmemleak: fix stale documentation and raise the verbose default"
(Breno Leitao):
Bring the kmemleak documentation up to date and require a third
confirming scan before verbose kernels print a suspected leak. The
extra scan helps suppress transient false positives in noisy debug
builds.
- "mm/memory: improve insert_pages() error handling" (Avi Weiss):
Tighten insert_pages() error handling so partial failures are
reported and cleaned up consistently. The caller should not have to
guess how far the operation got.
- "mm/damon: allow NULL or unstarted damon_ctx parameter for
damon_call()" (SJ Park):
Make damon_call() handle NULL and not-yet-started contexts safely.
Simplify the rules for callers and avoid an indefinite wait on an
invalid state.
- "mm/damon: introduce pgidle_set probe filter type" (SJ Park):
Add a pgidle_set DAMON probe filter, giving monitoring users another
way to select pages by their idle-tracking state. Wire it through the
filter interfaces and tests.
- "mm/damon/core: remove unused helper functions" (Cheng-Han Wu):
Remove DAMON core helpers which no longer have callers. Keep the API
surface smaller rather than retaining dead code just in case.
- "mm: stop calling pmd_folio() on special PMDs" (Gregory Price):
Avoid calling pmd_folio() on special PMD mappings that have no struct
page. The old assumption could fault in procfs walkers; use the
normal-folio checks and handle those mappings properly.
- "mm: remove three unused helpers from mm.h" (Tal Zussman):
Remove three unused helpers from mm.h. Fewer obsolete interfaces for
the next person to stumble over.
- "mm/damon: improvements in efficiency, error handling, documents"
(Liew Rui Yan):
Skip needless DAMOS quota work once the quota is full, propagate a
missing sysfs error and tidy a couple of comments. The ignored error
could make a monitoring-start request appear successful when it
wasn't.
- "docs/mm/damon/design: add explanation of nr_snapshots" (Liew Rui
Yan):
Explain DAMON's nr_snapshots accounting in the design documentation
and straighten out the associated terminology. Make it clearer what
users should expect from that counter.
- "selftests/cgroup: fixes for test_zswap on single core VM" (Wilson
Felipe Pereira):
Fix two test_zswap failures on single-CPU VMs. Wait for the exiting
child's cgroup to become unpopulated before reconfiguring it, and
avoid another test assumption which breaks under constrained
scheduling.
- "docs/ksm: fix advisor documentation and comment" (Jinjiang Tu):
Correct the KSM advisor documentation and a misleading code comment.
Keep the description aligned with how the advisor actually works.
- "Fix bugs in HugeTLB allocation when mem_cgroup_charge_hugetlb()
fails" (Ackerley Tng):
Fix HugeTLB allocation cleanup when the memcg charge fails. Make sure
failure exits undo what was allocated rather than leaving stale
accounting or resources behind.
- "mm, memcg: fix memory.peak reset clobbering other fds' watermark"
(Ridong Chen):
Fix memory.peak reset handling so resetting one file descriptor
doesn't overwrite the watermark kept for another. Keep those per-open
measurements independent as intended.
- "mm: reject zone device folios in more folio walkers" (Gregory
Price):
Reject zone-device folios in page walkers that cannot safely handle
them. Extend the existing checks rather than assuming every folio has
ordinary system-memory backing.
- "percpu: remove code with no effect" (Sang-Heon Jeon):
Remove a few pieces of percpu code which no longer do anything. There
is no reason to keep maintaining dead paths.
* tag 'mm-stable-2026-10-19-21-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (539 commits)
mm: shmem: assign a lock class to the unused huge shrinklist
mm: vmscan: put rotation-missed folios at the LRU tail
mm: kmemleak: scan the struct page array in MAX_SCAN_SIZE batches
mm: kmemleak: move the struct page scan into a helper
mm/damon: document that a zero sample_interval is accepted
mm/damon: fix typos in comments
mm/damon/sysfs: propagate damon_call() error in turn_damon_on
mm/damon/core: skip quota score setup when the quota is full
mm/damon/tests/core-kunit: test the size charged for a filter-trimmed region
mm/damon/core: charge only the part of a region the filter left
mm: disallow raw PFN mappings of huge/shared zeropage
selftests/mm: zap whole PTE tables in the khugepaged race harness
selftests/mm: add memory-pressure threads to the khugepaged race harness
selftests/mm: race the collapse of windows with holes
selftests/mm: add khugepaged race harness
selftests/mm: check that one khugepaged pass collapses one window
selftests/mm: run every supported collapse order by default
selftests/mm: cover a shared-source collapse write race
selftests/mm: parameterize the mixed-source collapse case by source order
selftests/mm: add order-parameterized khugepaged collapse cases
...
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