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11257
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Linus Torvalds
|
89d2d7bf06 |
Merge tag 'efi-next-for-v7.4' of 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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Linus Torvalds
|
0dfc0090b9 |
Merge tag 'fbdev-for-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev updates from Helge Deller:
"A whole lot of small fixes all over many drivers, but the majority of
changes are related to code cleanups regarding the cursor handling in
vt and fbcon.
Fixes:
- core: initialize modelist in framebuffer_alloc()
- core: bitblit: fix glyph clipping when fbcon pans
- fbcon: restore font geometry if font rotation fails
- sh_mobile_lcdcfb: restore the per-overlay sysfs attributes
- udlfb: don't rebuild the mode list while the framebuffer is in use
- atmel_lcdfb: prevent FIFO work after removal
Cleanups:
- vt, fbcon, vgacon: cursor code rework & cleanups
- MAINTAINERS: name the deller/linux-fbdev for-next branch
- drop unused FB_IOMEM_HELPERS_DEFERRED Kconfig option
- acornfb: remove unused code
- atafb: fix sparse warnings and avoid casts
- sstfb: use managed PCI device enable
- gxt4500, kyro, nvidia: release write-combining handle on probe failure
- various drivers: typo fixes in comments
- various drivers: fix error path on fb_deferred_io_init() failure
- various drivers: use FB blanking constants instead of VESA constants"
* tag 'fbdev-for-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (53 commits)
fbdev: xilinxfb: Use FB blanking constants
fbdev: platinumfb: Use FB blanking constants
fbdev: sa1100fb: Remove comment on VESA DPMS modes
fbdev: i810fb: Use FB blanking constants
fbdev: au1100fb: Use FB blanking constants
fbcon: Retry rotated font allocation after failure
fbcon: Rebuild rotated font buffer on font change
fbcon: Include font geometry in the rotated font cache
fbdev: bitblit: Fix glyph clipping when fbcon pans
fbcon: Replace fbcon_fill_cursor_mask() with fbcon_cursor_glyph()
lib/fonts: Add font_glyph_cursor() helper
vgacon: Use vt_cursor_{start,end}()
vgacon: Remove trailing whitespaces
vt: Add cursor-size helpers
MAINTAINERS: name the deller/linux-fbdev for-next branch
fbdev: atafb: avoid cast when assigning buffer address pointer
fbdev: atafb: fix sparse warnings
fbdev: atyfb_base: fix typos in comments
fbdev: aty128fb: fix typos in comments
fbdev: mach64: fix typos in comments
...
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Linus Torvalds
|
55fbedcec6 |
Merge tag 'bpf-next-7.4' of 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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Linus Torvalds
|
90b754d401 |
Merge tag 'bootconfig-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull bootconfig updates from Masami Hiramatsu:
"Parser robustness and validation improvements:
- Skip printing early params to cmdline from bootconfig
Suppress early_param keys from /proc/cmdline and warn the user,
since bootconfig does not invoke early_param handlers and silently
ignoring them is misleading
- Reject unexpected data after null character
Detect and reject non-null data following an intermediate null
character in the bootconfig buffer, preventing silently ignored
configuration after an early termination
Code cleanups:
- Merge _xbc_exit() into xbc_exit()
Since memblock_free() now handles late freeing and NULL addresses,
the separate _xbc_exit() helper and its early argument are
unnecessary. Inline it into xbc_exit()
- Remove redundant assignment in xbc_parse_array()
The node->child = 0 assignment after the loop duplicates what
xbc_init_node() already did
- Skip internal tree sanity checks in kernel
Move the node index bounds loop from xbc_verify_tree() into a
userspace-only xbc_sanity_check_tree() to reduce boot-time
overhead, since out-of-bounds indices cannot be produced by
malformed input
- Move BOOTCONFIG_FOOTER_SIZE to include/linux/bootconfig.h
Share the footer size constant between kernel and user-space tools,
replacing the hardcoded (BOOTCONFIG_MAGIC_LEN + 8) expression in
init/main.c
Tooling improvements:
- Remove unused PAGE_SIZE macro from the bootconfig tool
- Consolidate xbc_init() to error message wrapper
Use init_xbc_with_error() for all bootconfig initialization paths
in the tool for simpler and more consistent error handling"
* tag 'bootconfig-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
bootconfig: Move BOOTCONFIG_FOOTER_SIZE to include/linux/bootconfig.h
bootconfig: Skip internal tree sanity checks in kernel
tools/bootconfig: Consolidate xbc_init() to error message wrapper
bootconfig: Reject unexpected data after null character
bootconfig: Skip printing early params to cmdline from bootconfig
tools/bootconfig: remove unused PAGE_SIZE macro
bootconfig: remove redundant assignment in xbc_parse_array()
bootconfig: merge _xbc_exit() into xbc_exit()
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Linus Torvalds
|
5b212610d0 |
Merge tag 'printk-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek: - John Ogness became PRINTK co-maintainer - Unregister boot consoles when any proper console is registered at the end of the boot phase. Before they were removed only when the so-called preferred console, usually set via the last 'console=' parameter, got registered - Fix computation for increasing the printk ringbuffer on systems with many CPUs and possibly long backtraces from all CPUs - Cleaned up irq_works handling for deferred printk operations - Use acquire/release semantic for filled_random_ptr_key - Allow to use ':' in console options - More code clean up * tag 'printk-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: MAINTAINERS: Make John PRINTK co-maintainer lib/vsprintf: Use EXPORT_SYMBOL_IF_KUNIT() to export symbols printk: Remove console options before decoding the name printk: increase the ring buffer for more than 16 CPUs by default printk_ringbuffer: Avoid needless read of prb_desc printk: Use two irq_works instead per-CPU lib/vsprintf: Use acquire/release for ptr_key publication printk: Remove remaining boot consoles when a real console exists |
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Linus Torvalds
|
845f394e46 |
Merge tag 'sysctl-7.04-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl updates from Joel Granados: - Disallow partial vector updates Stage sysctl vector writes before updating. Removes the chance of leaving a sysctl vector partially updated due to erroneous input. This is not an atomic write; a concurrent reader can still see a partially updated vector. - Remove redundant sysctl config guards Remove locations where (CONFIG_SYSCTL && CONFIG_PROC_FS) was checked. They are superfluous as CONFIG_SYSCTL now depends directly on CONFIG_PROC_FS. - Rewrite selftests using KTAP helpers Each test now reports its own KTAP result and runs in a subshell. Test suite continues after failure. - Misc Fix a use-after-free in the selftests test_sysctl module. Quiet an unused variable warning in fs/proc/proc_sysctl.c:init_header(). Add tests for partial vector updates and the int jiffies converters. * tag 'sysctl-7.04-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl: selftests: sysctl: Check the sign of a negative jiffies read sysctl: Add jiffies converter entries to the test module sysctl: quiet unused variable warning in fs/proc/proc_sysctl.c:init_header() sysctl: unregister tables before freeing bitmap sysctl: Rewrite selftests on top of KTAP helpers sysctl: remove redundant CONFIG_PROC_FS checks sysctl: consolidate CONFIG_SYSCTL into a single block in kernel/sysctl.c sysctl: collapse redundant CONFIG_SYSCTL nesting in kernel/sysctl.c sysctl: Add 0013 to test partially updated vectors sysctl: Disallow partial updates for erroneous sysctl vectors sysctl: Reject uint arrays before calling the general proc_vec sysctl: Split data conversion and file position handling |
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Linus Torvalds
|
c0e8d30137 |
Merge tag 'modules-7.4-rc1' of 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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Linus Torvalds
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c5fd5e67c7 |
Merge tag 'mm-stable-2026-10-19-21-33' of 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
...
|
||
|
Linus Torvalds
|
734bef548a |
Merge tag 'net-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"This includes a significant number of low-priority fixes - especially
in the NIC drivers area - that we deferred from the last few RCs in
the previous cycle, which can't be easily outlined in the synopsis
below.
Core & protocols:
- Continue the work on removing rtnl_lock dependencies:
- per-netns ARP and ND neighbour tables, with the default settings
now configurable per netns (inheritance from init_net is
controlled by the new net.core.neigh_inherit_init_net sysctl)
- RCU-protected configuration and rtnl_lock-less fill_info() for
hsr, netkit, sit, vlan and vxlan devices
- per-netns device unregistration for ip tunnel and gre devices
- use the netdev instance lock instead of rtnl_lock when reading
speed and duplex via sysfs
- batch the flushing of uncached routes at device unregistration
time, relieving rtnl_lock contention on netns dismantle.
- Add hardware pacing offload support, admin-controlled via a new
rtnetlink attribute, with sch_fq integration (implemented in idpf).
- Re-segment BIG TCP GSO packets into GSO packets fitting the egress
device limits instead of plain MSS-sized segments, improving
throughput for mixed BIG TCP / non-BIG TCP paths by up to 70%.
- Generate RSS keys that spread flows over all the RX queues; the
previous random keys could leave some queues unused.
- Optimize the bridge VLAN forwarding paths: cache the port-VLAN in
fdb entries and consider only VLAN members when flooding, for ~10%
more Mpps in the fdb forwarding path.
- A few TCP/IP performance improvements aimed at efficient cache
usage and reducing contention.
- Add the TCP ROCCET congestion control, a CUBIC variant aimed at
avoiding bufferbloat in cellular networks.
- Continue the conversion of getsockopt callbacks to sockopt_t.
- Add an ethtool command to list the front-facing ports of an
interface, including SFP cages and modules, using the phy_port
representation.
- Enable BIG TCP support for bareudp tunnels.
- Remove the IPV6_ADDRFORM socket option and disallow buggy TCP state
transitions (listen() + shutdown() + connect() and connect() +
connect(AF_UNSPEC) + listen()).
- Remove most BUG_ON()s from core packet processing, replacing them
with error paths.
Wireless:
- Latency improvements, including lockless station get/dump and
beacon updates, plus RTNL reduction and locking cleanups.
- Infrastructure for non-station TX/RX with MLO.
- NAN (Wi-Fi Aware) Instant Communication support and other NAN
improvements.
- Control frame Integrity Protocol (CIP) and protected TWT support.
- Improvements for AP regulatory checks.
Netfilter:
- Disable br_netfilter in user namespaces and schedule it for removal
in 2027.
- Restrict the raw table in nft_compat to the specific family, hook
and priority.
- Prepare the flowtable for mixed IPv4-over-IPv6 tunneling (and vice
versa).
- Use GFP_KERNEL_ACCOUNT for most netfilter allocations, for better
integration with memcg.
- Allow discovering conntrack zone filtering support in ctnetlink
dumps, and fix nfnetlink_hook handling of large dumps.
Deletions:
- Move the LLC type 2 sockets out of tree. There are no known users
and the code attracts a never-ending stream of LLM-driven fixes.
Device drivers:
- New drivers:
- Meta Platforms NIC (mpnic), the second-generation NIC from Meta
- initial skeleton of the Nebula-matrix NICs driver (nbl)
- X-Powers AC200/AC300 Fast Ethernet PHYs
- Ethernet high-speed NICs:
- Intel:
- i40e: XDP metadata support for RX hash and VLAN tag
- ice: expose the E825 TSPLL state via the DPLL subsystem
- nVidia/Mellanox:
- move the data direct infrastructure from IB to core, in
preparation for netdev support.
- reduce the memory used per offloaded TC rule
- Meta (fbnic):
- support large io_uring zero-copy RX buffers
- Microsoft vNIC (mana):
- add BQL support
- Ethernet NICs consumer, and embedded:
- Airoha:
- LRO offload support
- Cadence (macb):
- context swapping for ringparam and MTU changes, avoiding
buffer loss under memory pressure
- Mucse (rnpgbe):
- TX/RX and link status support
- NXP (enetc):
- SR-IOV improvements and VF support for ENETC v4
- Qualcomm (ppe):
- IPQ5424 support
- Realtek PCI (r8169):
- phylink support
- RSS support for RTL8127
- Renesas (ravb):
- gPTP support for R-Car Gen4
- Synopsys (stmmac):
- XDP multi-buffer support on the TX side
- tc mqprio hw queue priority offload
- support for RK3568 SGMII, Allwinner H616 EMAC1, UltraRISC
DP1000 and Qualcomm sa8255p
- Ethernet switches:
- Mediatek (mt7530):
- fast age and change conduit support
- Microchip (ksz):
- support for KSZ8995XA/KS8995XA
- Microchip (lan966x):
- PCIe FDMA support, ~20x throughput increase in PCIe endpoint
- Microchip (sparx5):
- Time Aware Shaper (taprio) offload
- Motorcomm (yt921x):
- LED and SerDes PCS support
- Realtek (rtl8365mb):
- EEE support
- Ethernet PHYs:
- Broadcom:
- enable jumbo frames on BCM54xx
- Realtek:
- support for RTL8261CE_CG and RTL8261D_VM
- MDIO support for RTL838x and RTL839x
- WiFi drivers:
- Broadcom (brcmfmac):
- FT/OKC roaming offload
- Intel (iwlwifi):
- UHR sniffer support
- support for newer UEFI/BIOS tables
- MediaTek (mt76):
- mt7925 NAN improvements
- offchannel/scan improvements and MLO fixes
- Morse Micro (mm81x):
- monitor mode support
- Qualcomm (ath12k):
- IPQ5332 platform infrastructure
- Realtek (rtw88):
- RTL8723BS support
- SDIO TX performance improvements
- Realtek (rtw89):
- P2P_DEVICE support
- BT-coex updates for RTL8922D
- Bluetooth:
- move H:4 reassembly into the Bluetooth core
- add generic support for vendor packets
- MGMT: add security level changed event
- Bluetooth drivers:
- btusb: support Bulk Serialization Mode
- Intel: support Draco and Titan Lake, allow unsigned firmware
- Mediatek: MT7928 support
- Qualcomm: QCC2072 support
- Broadcom: Synaptics 4384 support"
* tag 'net-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2126 commits)
Bluetooth: btusb: disable by default Qualcomm multi-subsystem
tipc: fix broadcast sender hang on last acker departure
tipc: fix use-after-free of broadcast reception link at node release
r8169: clear TX LPI on RTL8168h at link up after phylink conversion
tun: Require CAP_NET_ADMIN to attach to an ownerless device
net/sched/sch_cake: drop dead nla_nest_end() error check
net/sched/sch_cake: widen buffer_used to u64
net/sched/sch_cake: reduce parent backlog when clearing a tin
net/sched/sch_cake: serialize reconfiguration with the datapath
tg3: Add Datto SIRIS 5 1U Server to restart AER quirk table
net/mlx5e: Stop asserting for RTNL when closing channels
net: shrink the payload-only part of skb dataref to one bit
net: wwan: iosm: validate msg_head before indexing msg_ring
net: bgmac: rate limit RX error messages
selftests: net: veth: test XDP_TX to a peer with GRO enabled
veth: schedule the peer's NAPI after XDP_TX when only GRO is enabled
pppoe: delete session hash entries by pointer match
net: lan969x: don't disable hardirqs in fdma tx clear
net: sparx5/lan969x: do not clobber the PSFP cycle timer update period
net: lan969x: fix DSM calendar for empty taxis
...
|
||
|
Linus Torvalds
|
864c07de0c |
Merge tag 'hardening-v7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook: - Provide kmalloc_obj*-style API for devm_kmalloc() - Improve seq_buf API for saner C String handling with several bug fixes along the way (Kees Cook, Bill Wendling) - Overflow helper readability improvements (Bill Wendling) - Unexport native_write_cr4() (Dennis Chen) - um: fix CONFIG_GCOV for built-in code (Johannes Berg) - Improve stackinit test coverage (Justin Stitt) - KMSAN: fix memset() when using fortify-source, again (Arnd Bergmann) - lkdtm: use kmalloc() instead of __get_free_page (Mahad Ibrahim) - signalfd: don't dequeue the forced fatal signals (Oleg Nesterov) - Fix randstruct to recognize new container_of() behavior - coccinelle: kmalloc_obj: Convert multi-byte integral allocations too - Fix a couple remaining allocation return type mismatches * tag 'hardening-v7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (29 commits) overflow: Match arithmetic in both parts of __builtin_choose_expr lkdtm: Make UNSET_SMEP built-in-only and unexport native_write_cr4() extcon: realtek: Remove const from type_c_cfg allocation type coresight: cti: Add const to con_groups allocation type docs: core-api: Document the seq_buf API nvdimm: ndtest: Return the string length from flags_show() powerpc/papr_scm: Return the string length from the sysfs show functions seq_buf: Add seq_buf_init_append() bpf: Remove dead newline stripping from format_disasm_line() seq_buf: Add seq_buf_terminate() seq_buf: Add seq_buf_strlen() seq_buf: Clear what a writer did not claim when a seq_buf overflows seq_buf: Copy what fits when seq_buf_puts() and seq_buf_putmem() overflow scsi: lpfc: Print rx monitor records straight into the seq_buf seq_buf: Do not pop from an overflowed seq_buf seq_buf: Do not print an empty line from an overflowed seq_buf_do_printk() .get_maintainer.ignore: Add Kees Cook devres: Provide kmalloc_obj*-style API for devm_kmalloc mm: Move default_gfp() into gfp_types.h kunit/stackinit: Clean up XFAIL under instrumentation ... |
||
|
Linus Torvalds
|
bf23250845 |
Merge tag 'v7.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Fix algif_skcipher source SG overrun
- Allow hmac(sha512) for non-root users
Algorithms:
- Add wrapper for zeroing AES key context
- Avoid redundant stream initialisations in zstd
Drivers:
- Remove hisilicon/sec.
- Handle digest-only authenc requests in atmel
- Handle zero-length skcipher requests in mxs-dcp
- Lower the default priority of caam/qi2
Others:
- Optimise key comparison in rhashtable lookup that uses constant
parameters"
* tag 'v7.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (146 commits)
crypto: atmel-tdes - consolidate error paths in atmel_tdes_dma_init()
crypto: atmel-tdes - reuse fast in atmel_tdes_crypt_start()
crypto: atmel-tdes - use separate DMA scatterlists
MAINTAINERS: delete entry for John Allen
hwrng: amd - use PMBASE_OFFSET consistently
hwrng: cctrng - simplify cctrng_probe()
hwrng: intel - simplify intel_rng_mod_init()
crypto: qat - fix use of destroyed vf2pf_lock on VF restart
crypto: qat - initialise state_lock on every path in adf_devmgr_add_dev()
hwrng: imx-rngc - Use optional clock
crypto: talitos - init tasklets before requesting IRQs
crypto: algif_skcipher - rewind rounded output bytes
crypto: algif_hash - Allow hmac(sha512) for unpriviledged users
crypto: sa2ul - Remove unused fields
hwrng: stm32 - use devm_platform_ioremap_resource() in stm32_rng_probe()
hwrng: stm32 - drop redundant initializations
hwrng: amd - simplify control flow in amd_rng_mod_init()
hwrng: stm32 - reuse clock rate in stm32_rng_clock_freq_restrain()
hwrng: stm32 - use swap() in stm32_rng_probe()
hwrng: cctrng - drop redundant initializations
...
|
||
|
Linus Torvalds
|
2a08195e4d |
Merge tag 'linux_kselftest-kunit-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit update from Shuah Khan: "A single fix to kunit_run_all_tests() to return void since callers don't check the return value and the integer return type is a remnant from when the function was executed as initcall which is no longer the case" * tag 'linux_kselftest-kunit-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: Return void from kunit_run_all_tests() |
||
|
Linus Torvalds
|
7cd80b8168 |
Merge tag 'uml-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Johannes Berg: - NOMMU support, mostly for mm/ testing The only bigger change, we added support for building with !CONFIG_MMU, mostly for testing, e.g. via kunit. Some new selftests targetted to NOMMU are moving elsewhere, but are runnable on ARCH=um without MMU. - Tighter page permissions Tighten page permissions to catch more bugs (ARCH=um is, after all, often used for testing), and also mark __init memory inaccessible for the same reason. - Various maintenance/cleanups Fix build on really old hosts, fix leaks, make the code a bit more robust, header cleanups, typo fixes, the usual. * tag 'uml-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (38 commits) um: place large BSS inputs in an output section um: fix shutdown __inittext access um: time-travel: fix sched_yield() behaviour um: require MMU for UML PCI support um: vector: avoid NULL queue dereference in legacy RX mode um: use %pB to print functions in stack traces um: mprotect() __init memory um: move init text between __init_begin/end um: improve checking for --no-warn-rwx-segments um: make stub compilation more robust um: link .lbss/.ldata/.lrodata correctly um: add perf-event support x86/um: remove unused <asm/required-features.h> header um: fix typo "hander" in comment um: Add definition of __NR_close_range for older host OSs um: virtio_uml: switch to dynamic root device um: Tighten exec permissions on page mappings Documentation: um: document nommu UML um: allow deselecting CONFIG_MMU um: nommu: add userspace runner processes ... |
||
|
Linus Torvalds
|
2e51c645fe |
Merge tag 'soc-drivers-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"There are lots of minor updates for driver subsystems managed through
the soc tree (turris-omnia platform, cache driver, tee drivers,
arm-cci, bus, memory) as well as soc vendor specific drivers
(starfive, xilinx, microchip, nxp, amlogic, imx, renesas, samsung, ti,
nvidia).
The more notable changes are:
- Larger updates for Qualcomm SoCs including support for SM8950
(Maili) SM8975 (Hawi), Glymur, Shikra, and IPQ5424
- Added SoC support for Exynos5515, Tegra264, Tegra410, R8A774A3, and
MT8167 in existing drivers
- Arm SCMI firmware driver support for ACPI PCC transport and module
autoloading of protocol specific drivers
- Apple crash log support for CrgA embedded controller"
* tag 'soc-drivers-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (176 commits)
platform: cznic: turris-omnia-mcu: stop button emulation producers
cache: Make cpu_cache_invalidate_memregion() error out if there are no handlers
soc: mpfs: use kref cleanup on probe failure
arm64: enable HAVE_SHARED_GPIOS for all ARM64 platforms
bus: arm-cci: Drop cci-control-port node reference in __cci_ace_get_port()
bus: arm-cci: Drop CPU node reference in cci_ace_init_ports()
soc: fsl: dpio: Free the IRQ before releasing the I/O object
soc: fsl: dpio: Fix cleanup on IRQ registration failure
bus: fsl-mc: Annotate fsl_mc_io.portal_virt_addr with __counted_by_ptr
bus: fsl-mc: drop the fwnode links of the dpmacs nodes
soc: fsl: cpm1: tsa: Fix clock leak in tsa_of_parse_tdms()
soc: qcom: geni-se: Drop unused icc_ddr parameter from geni_icc_get()
firmware: qcom: scm: Allow QSEECOM on ThinkPad T14s Gen 7
dt-bindings: mailbox: qcom: Document Maili CPUCP mailbox controller
dt-bindings: spmi: glymur-spmi-pmic-arb: Add compatible for Qualcomm Maili SoC
soc: qcom: pmic_pdcharger_ulog: prevent work requeue during remove
ASoC: dt-bindings: qcom,apr: Add modem_apps GLINK channel for shikra
firmware: qcom: tzmem: disable SHM bridge for SM7125 platform
soc: qcom: ubwc: Add Kalambo UBWC config
firmware: qcom: scm: Allow QSEECOM on Kalambo CRD
...
|
||
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Petr Mladek
|
046d687e58 | Merge branch 'for-7.4' into for-linus | ||
|
Linus Torvalds
|
7be4bc52fd |
Merge tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Core:
- Add TAINT_FORCED_BIND to taint the kernel and driver module before
manual sysfs bind/unbind operations; make add_taint_module()
available to driver core and update taint decoding tools and
documentation
- Constify device_show/store_*() attribute parameters and adapt x86
MCE and perf users to prepare for const dev_ext_attribute instances
- Fix UAF in NUMA access node registration failure handling by
dropping the device reference with put_device() instead of directly
freeing the node
debugfs:
- Make debugfs_create_str() read-only to eliminate double-free races
between concurrent writers; reject writable modes; convert
interconnect and SoundWire users to local file operations with
mutex-protected strings
kobject:
- Fix out-of-bounds access in kobject_action_type() when parsing
action strings containing embedded NUL bytes
- Fix the kobject_set_name() reference in kset_register() kernel-doc
Rust:
- DMA:
- Tie Coherent, CoherentBox and CoherentHandle to the device's
bound lifetime to prevent retaining DMA allocations beyond
driver unbind; propagate the lifetime through nova-core and the
DMA sample driver
- I/O:
- Require explicit base types for registers and replace relative
registers with typed subregion projections; reimplement
register!() as a proc macro, support registers using existing
types without inline bitfields, and convert nova-core, Tyr and
the PCI sample; add AsRepr/AsReprMut and transmute helpers with
deferred size checks for representation conversions
- Wrap ResourceSize in a transparent newtype with explicit
conversions, including checked conversion to usize
- PCI:
- Add typed PCIe extended capability lookup and SR-IOV accessors
for the First VF Offset and decoded VF BAR addresses and widths,
keeping raw SR-IOV registers private to preserve PCI core
ownership of their state
- scatterlist:
- Honor the device's maximum segment size as well as the DMA
mapping limit when constructing SG tables
- Return u32 from SGEntry::dma_len() to match the C segment length
type
- misc:
- Validate auxiliary DeviceId name length explicitly to improve
compile-time diagnostics for oversized device ID table entries
- Drop unnecessary 'static bounds from debugfs ScopedDir file
creation methods to support data containing non-'static
references, including DMA buffers
Misc:
- Add Johan Hovold as driver core maintainer
- Simplify platform_device_alloc() by returning early on allocation
failure
- Fix typos in driver core and kernfs comments"
* tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (41 commits)
rust: pci: add extended capability and SR-IOV support
kobject: Fix the kobj_set_name reference in kset_register() kernel-doc
rust: io: convert ResourceSize into a transparent newtype
rust: scatterlist: return u32 from SGEntry::dma_len()
MAINTAINERS: add myself as driver core maintainer
debugfs: make debugfs_create_str() read-only
soundwire: debugfs: replace writable string helper
interconnect: debugfs: replace writable string helper
docs: admin-guide: Handle TAINT_FORCED_BIND when parsing /proc/sys/kernel/tainted
driver core: platform: Simplify platform_device_alloc()
kobject: fix out-of-bounds access in kobject_action_type()
rust: scatterlist: honor the device's maximum segment size
driver core: add TAINT_FORCED_BIND for when userspace manually messes with devices and drivers
module: fix up documentation for add_taint() and add_taint_module()
module: pull out add_taint_module() to be public
driver core: Constify the signature of device_show/store_*()
drivers: perf: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
x86/mce: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
rust: auxiliary: validate DeviceId name length
driver core: fix typos in comments
...
|
||
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Linus Torvalds
|
ccc4d9f891 |
Merge tag 'timers-vdso-2026-10-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO updates from Thomas Gleixner:
"Updates for the VDSO subsystem:
- Ensure that the CLOCK_AUX base calculations are properly scaled
against the base timekeeper. The update function failed to take the
fractional nanosecond part into account, which results in a
rounding error.
- Cleanup and consolidate the vsyscall headers to get rid of
pointless copies all over the architectures.
- Replace a runtime conditional in the time getter function for
namespaced clocks by simple pointer arithmetic which speeds up the
read function"
* tag 'timers-vdso-2026-10-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
vdso/vsyscall: Keep the CLOCK_AUX base scaled
vdso/math64: Add and use __iter_div64_u64_rem()
vdso/math64: Use OPTIMIZER_HIDE_VAR() in __iter_div_u64_rem()
vdso/gettimeofday: Avoid runtime conditional in do_hres_timens()
vdso: Remove __ASSEMBLER__ guards from vsyscall.h
vdso: Add asm-generic/vdso/vsyscall.h
vdso: Remove unnecessary vdso/vsyscall.h includes
riscv/hwprobe: Include vdso/datapage.h
arm64/vdso: Delete asm/vdso/vsyscall.h inclusions
x86/vdso: Delete asm/vdso/vsyscall.h inclusions
sparc/vdso: Delete asm/vdso/vsyscall.h inclusion
s390/vdso: Delete asm/vdso/vsyscall.h inclusions
sparc/vdso: Move __VDSO_PAGES to asm/vdso.h
x86/vdso: Move vDSO page definitions to asm/vdso.h
vdso: Delete asm-generic/vdso/vsyscall.h
vdso/vsyscall: Define fallback time synchronization functions in vsyscall.c
vdso/getrandom: Define fallback __arch_get_vdso_u_rng_data() in getrandom.c
vdso/gettimeofday: Define fallback __arch_get_vdso_u_time_data() in gettimeofday.c
vdso: Move the kernel-side time update helpers to a new header
|
||
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Linus Torvalds
|
a56a18c14a |
Merge tag 'csd-lock.2026.10.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull CSD lock updates from Paul McKenney: "Report CSD-lock stall recovery time: - Refactor to simplify csd_lock_wait_toolong() function prototype - Report time required to recover from a CSD-lock stall - Add a test of this reporting" * tag 'csd-lock.2026.10.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: lib/test_csd_lock: Add a module to stall a CPU on a CSD lock locking/csd-lock: Report how long a stuck CSD lock took to recover locking/csd-lock: Pack csd_lock_wait_toolong() state into a struct |
||
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Linus Torvalds
|
9ba46df344 |
Merge tag 'bitmap-for-v7.4-rc1' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov: "This includes __MAKE_OP() macro removal from me with the follow-up from Mark, cleanups for bitmaps parser from Shashank and a couple Rust docs fixes from Georgios" * tag 'bitmap-for-v7.4-rc1' of https://github.com/norov/linux: rust: bitmap: document panics in `next_bit` and `next_zero_bit` rust: id_pool: document panics in `find_unused_id` and `release_id` bitmap: test bitmap_parselist() with a group size close to UINT_MAX bitmap: bitmap_parselist(): don't wrap around on a huge group size bitmap: test bitmap_parselist() with text after the group size bitmap: bitmap_parselist(): reject trailing characters after group size bitmap: test bitmap_parse() with an illegal character before 8 hex digits bitmap: bitmap_parse(): reject non-hex character before 8 digits bitfield: Restore be16_replace_bits() bitfield: get rid of __MAKE_OP machinery |
||
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Linus Torvalds
|
95615dd9ff |
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers: - Migrate the x86 and riscv optimized implementations of various AES modes (ECB, CBC, CBC-CTS, CTR, XCTR, XTS) into lib/crypto/. This makes the library APIs be properly accelerated on these architectures, while still accelerating crypto_skcipher as well. It removes a lot of redundant glue code, since the crypto API boilerplate no longer needs to be duplicated for these architectures. It also fixes the longstanding issue where optimizations for these AES modes were disabled by default on these architectures. - Optimize AES-XTS on SPARC64 using the SPARC crypto opcodes - Move the SipHash code into lib/crypto/ - Update the ChaCha and Poly1305 functions to take size_t lengths, resolving issues where lengths over INT_MAX were mishandled - Make frame pointer unwinding work properly in some of the x86 assembly functions, by following the standard %rbp convention - Add helper functions for zeroizing structs - Make a few documentation improvements * tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (49 commits) lib/crypto: md5: remove unused header lib/crypto: mips/chacha: Handle lengths of 2 GiB or more lib/crypto: arm/chacha: Handle lengths of 2 GiB or more in scalar code lib/crypto: chacha: Use size_t length lib/crypto: poly1305: Use size_t length lib/crypto: x86/sha512: Follow the normal %rbp convention lib/crypto: x86/sha256: Follow the normal %rbp convention lib/crypto: x86/sha1: Follow the normal %rbp convention lib/crypto: chacha20poly1305: zeroize state in __chacha20poly1305_decrypt lib/crypto: sparc/aes-xts: Add optimization using the AES opcodes lib: Move SipHash into lib/crypto/ lib/crypto: x86/aes-ctr: Remove some unreachable code crypto: x86/aesni-intel - Add transitional selections crypto: aes - Boost priority of encryption modes further lib/crypto: x86/aes: Set RNDKEY in aes_cbc_encrypt_aesni() lib/crypto: riscv/aes-xts: Migrate optimized code into library lib/crypto: riscv/aes-ctr: Migrate optimized code into library lib/crypto: riscv/aes-cbc: Migrate optimized code into library lib/crypto: riscv/aes-ecb: Migrate optimized code into library lib/crypto: riscv/aes: Pass key struct to assembly code ... |
||
|
Linus Torvalds
|
6303381334 |
Merge tag 'cmpxchg-emu.2026.10.12b' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull two-byte cmpxchg emulation from Paul McKenney: "These commits add a cmpxchg_emu_u16() function that emulates two-byte cmpxchg() in terms of four-byte cmpxchg() for architectures not having native instructions for this purpose. They also make use of this cmpxchg_emu_u16() function in those architectures, namely sh, arc, csky, and xtensa. This permits use of two-byte cmpxchg() in common code. However, it sadly does not permit easy implementation of all algorithms needing on two-byte atomic operations because there are some systems still supported by Linux that do not have native two-byte store instructions. There is reason to believe that these systems will soon no longer be supported by Linux [1]" Link: https://lore.kernel.org/all/20260908152808.3928630-4-arnd@kernel.org/ [1] * tag 'cmpxchg-emu.2026.10.12b' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: xtensa: Emulate two-byte cmpxchg csky: Emulate two-byte cmpxchg ARC: Emulate two-byte cmpxchg sh: Emulate two-byte cmpxchg lib: Add two-byte cmpxchg emulation function |
||
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Linus Torvalds
|
776bb6df3f |
Merge tag 'locking-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- In the refcount checking code, BUG() on UAF related errors if
CONFIG_BUG_ON_DATA_CORRUPTION=y (Jann Horn)
- Add {over,under}flow detection for local_interrupt_{enable,disable}()
(Boqun Feng)
- Add kunit test case for max local_interrupt_disable() nesting level
(Boqun Feng)
- Clarify comment (Boqun Feng)
* tag 'locking-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irq: Add max local_interrupt_disable() nesting level kunit test case
irq: Explain better on NMI_MASK overflow condition
irq: Add {over,under}flow detection for local_interrupt_{enable,disable}
refcount: Use CONFIG_BUG_ON_DATA_CORRUPTION for UAF-related errors
|
||
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Linus Torvalds
|
cb95904b47 |
Merge tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Kconfig updates:
- Simplify PREEMPT_DYNAMIC (Mark Rutland)
Fair scheduler updates:
- Remove redundant RUN_TO_PARITY check (Elif Topuz)
- Declare augmented callbacks per field, fix
rb_add_augmented_cached() descent (Yiwei Lin, Peter Zijlstra)
- Restart fair hrtick after same-task repicks (Shubhang Kaushik)
- Improve the scheduling latency of short slice tasks (Vincent
Guittot)
Deadline/RT scheduler updates:
- Check start_dl_timer expiry with ktime_before() (Liang Hao)
- irq_work: CPU-hotplug improvements on PREEMPT_RT (Sebastian Andrzej
Siewior)
Energy-aware scheduling updates:
- Implement the steal_governor, introduce preferred CPUs and
steal-driven vCPU backoff (Shrikanth Hegde)
Multi-processor load-balancing updates:
- Enable preferred SMT siblings on NVIDIA Olympus (Andrea Righi)
- Randomize equally shallow idle CPU picks (Christian Loehle)
- Remove redundant core_sched_seq (Hui Su)
Cache-aware scheduling updates:
- Avoid publishing partial LLC utilization (Jemmy Wong)
NUMA-balancing updates:
- Reset NUMA fault locality after scan period update (Eric Kim)
Proxy execution updates:
- Ongoing work to implement sleeping owner handling for proxy
execution (John Stultz, Vasily Gorbik)
- Preparatory steps to make sched_ext compatible with proxy execution
(Andrea Righi)
Scheduler infrastructure updates & fixes:
- Remove the RCU wait from PSI trigger destruction (Shakeel Butt)
- Avoid modifying wait-entry on failed priority registration
(Hui Su)
- Use the new static key API for sched_feat (Hongyan Xia)
- Convert paravirt_steal to new static key APIs (Hongyan Xia)
- cputime: Don't account idle time twice after dyntick-idle
(Stian Halseth)
Scheduler debugging updates:
- Set TIF_NEED_RESCHED before calling __trace_set_need_resched()
(Sechang Lim)
- Fix context analysis errors in non-preferred CPU push (Shrikanth
Hegde)
Misc cleanups and fixes by Christian Loehle, Shubhang Kaushik,
Thomas Huth and Vladimir Zapolskiy"
* tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
sched: Replace nr_iowait_cpu() with a bool accessor
Revert "sched/fair: Remove dead code on enqueue_task_fair()"
sched/cache: Avoid publishing partial LLC utilization
sched/cputime: Don't account idle time twice after dyntick-idle
sched/psi: Remove the RCU wait from trigger destruction
sched/eevdf: Remove redundant RUN_TO_PARITY check
sched/wait: Avoid modifying entry on failed priority registration
rbtree_test: Use rb_add_augmented_cached() for the cached augmented test
rbtree: Update augmented data on the way down in rb_add_augmented_cached()
rbtree: Declare augmented callbacks per field with RB_AUG()
rbtree_test: Use rb_add() and rb_add_cached() for the basic tests
smpboot: Don't park the thread if work is pending
irq_work: Flush lazy work CPU down on PREEMPT_RT
irq_work: Update a comment regarding CPU hotplug invocation
sched/topology: Add asymmetric SMT packing override
sched/fair: Honor asymmetric SMT priority in idle selection
sched: Set TIF_NEED_RESCHED before calling __trace_set_need_resched()
sched/core: Fix context analysis errors in non-preferred CPU push
virt/steal_governor: Enable the driver
virt/steal_governor: Implement steal_governor policy loop
...
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||
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Linus Torvalds
|
dd8845db6d |
Merge tag 'x86_fpu_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FPU state updates from Borislav Petkov: - Document and cleanup the signal frame handling with the goal to allow process migration between CPUs with different FPU capabilities but which use only a common set of FPU features, i.e., think checkpoint/restore (Andrei Vagin) - Consolidate how XSTATE features are checked by doing them once during boot with the intent of removing cpu_has_xfeatures(). Latter will happen in the next cycle (Eric Biggers) - Other cleanups * tag 'x86_fpu_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu: Remove additional remnants of math emulation x86/fpu: Remove unnecessary checks for X86_FEATURE_FPU selftests/x86: Add tests for signal frame FPU portability x86/fpu: Pre-fault only required size of xstate buffer x86/fpu: Fix potential underflow in xstate_calculate_size() x86/fpu: Document reasoning of FX-only fallback x86/fpu: Extract restore_from_ia32_fxstate() and clean up fpu__restore_sig() x86/fpu: Clean up and rename variables in signal frame handling x86/fpu: Document signal frame layout and portability xor: Add AVX-512 optimized xor_gen() xor: Remove redundant X86_FEATURE_OSXSAVE check lib/crc: x86: Stop using cpu_has_xfeatures() lib/crypto: x86: Stop using cpu_has_xfeatures() crypto: x86 - Stop using cpu_has_xfeatures() um: Check for missing AVX and AVX-512 xstate bits x86/fpu: Check for missing AVX and AVX-512 xstate bits |
||
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Thomas Zimmermann
|
a88cef9206 |
lib/fonts: Add font_glyph_cursor() helper
The new helper font_glyph_cursor() fills a glyph with a cursor pattern. As with the font_glyph_rotate_*() helpers, the caller has to provide the output memory. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
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Nickolai Zeldovich
|
0007654a7b |
lib/buildid: reject file offsets that do not fit in pgoff_t
On a 32-bit kernel, parsing the build ID of a crafted ELF file can copy
far more than the intended bytes into a 64-byte on-stack buffer in
__build_id_parse(), corrupting the stack of whatever context fetches the
build ID. This might be reachable without privilege: perf records a build ID
for PERF_RECORD_MMAP2 on the no-fault path when a process mmaps its own file
(build_id_parse_nofault() from perf_event_mmap()), and BPF build-id stack
maps do the same.
freader_get_folio() turns a 64-bit file offset into a page cache index
with file_off >> PAGE_SHIFT and passes it to filemap_get_folio().
pgoff_t is unsigned long, 32-bit on a 32-bit kernel, so an ELF64 e_phoff
of 2^44 + k * PAGE_SIZE truncates to index k. filemap_get_folio()
returns the cached folio at index k, whose folio_pos() is far below the
requested file_off. In freader_fetch() the folio does not contain
file_off, so the "crossing folio boundaries" path computes
part_sz = folio_off + folio_sz - file_off as a large u64 (file_off is
much larger), and the following memcpy() truncates it to size_t and
copies a page into the 64-byte buffer. On a 64-bit kernel the index is
not truncated, the folio is not cached and the fetch returns -EFAULT, so
only 32-bit kernels are affected.
Reject a file offset that cannot be represented as a page cache index
before the lookup, so such a file fails the build ID parse cleanly as it
already does on 64-bit.
Reproduced on i386 under QEMU with CONFIG_STACKPROTECTOR_STRONG: mmapping
a crafted ELF (ELFCLASS64, e_phoff = 2^44) while a perf event with
attr.build_id is open panics with "stack-protector: Kernel stack is
corrupted in: __build_id_parse"; with this patch the parse returns
-EFAULT and the mmap completes cleanly. Built for i386 with W=1, no new
warnings.
Fixes:
|
||
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Arnd Bergmann
|
655e6054ac |
Merge tag 'cache-for-v7.4' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/drivers
standalone cache drivers for v7.4 Three low-priority bugfixes for issues in the hisi hha and sifive ccache drivers as well as the core code. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> * tag 'cache-for-v7.4' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux: cache: Make cpu_cache_invalidate_memregion() error out if there are no handlers cache: sifive_ccache: Remove redundant dev_err_probe() cache: hisi_soc_hha: use named initializers for acpi_device_id Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
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Mohamad Raizudeen
|
20ec6916d8 |
lib/crypto: md5: remove unused header
The `<linux/unaligned.h>` header is included but never actually used. The code handles memory accesses using memcpy() instead of the unaligned helpers. Remove this unused header to avoid false dependencies. Signed-off-by: Mohamad Raizudeen <raizudeen.kerneldev@gmail.com> Link: https://patch.msgid.link/20261016023558.8797-1-raizudeen.kerneldev@gmail.com Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
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Vladimir Kukharenko
|
ff2d72f2bf |
lib/crypto: mips/chacha: Handle lengths of 2 GiB or more
The MIPS ChaCha assembly, which is chacha_crypt_arch() itself, tests the remaining length with signed branches, so for 2 GiB + 64 bytes or more it takes the final partial block path too early and processes less than requested. It is only used on 32-bit kernels, where size_t is 32 bits, so declaring the length as size_t does not avoid this. No in-tree caller passes such lengths. The partial block code also keeps the remaining length as a negative value, so instead of changing the assembly, rename it to chacha_crypt_mips() and add a C chacha_crypt_arch() that passes it at most 1 GiB per call. Tested in QEMU user mode: with a length of 0xfffff045 the assembly processed about 4 KiB and advanced the block counter by 64; with the same 1 GiB loop in C, a 1.25 GiB + 4101 byte buffer matches a C reference. An LLM review of this code found the bug. Assisted-by: LLM Signed-off-by: Vladimir Kukharenko <vladimir@genproof.com> Link: https://patch.msgid.link/20261014-libcrypto-chacha-32bit-2gib-v1-2-e0719ca0be89@genproof.com Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
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Vladimir Kukharenko
|
f92159895b |
lib/crypto: arm/chacha: Handle lengths of 2 GiB or more in scalar code
chacha_doarm() compares the remaining length with signed conditions (blt, movle/movgt, bgt), and DIV_ROUND_UP(bytes, CHACHA_BLOCK_SIZE) in chacha_crypt_arch() wraps above 0xffffffc0, so lengths of 2 GiB or more are mishandled. size_t is 32 bits on arm, so declaring the length as size_t does not avoid this. On a Cortex-A7, an in-place chacha20_crypt() of 2 GiB + 4101 bytes changed only one byte. Use unsigned conditions (blo, movls/movhi, bhi) and DIV_ROUND_UP_POW2(). This affects the scalar code, which is used when NEON isn't usable and always on Cortex-A5 and Cortex-A7. No in-tree caller passes such lengths. Tested in QEMU on a Cortex-A7 with CONFIG_VMSPLIT_1G. An LLM review of this code found the bug. Assisted-by: LLM Signed-off-by: Vladimir Kukharenko <vladimir@genproof.com> Link: https://patch.msgid.link/20261014-libcrypto-chacha-32bit-2gib-v1-1-e0719ca0be89@genproof.com Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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e42003dba6 |
lib/crypto: chacha: Use size_t length
Upgrade the ChaCha functions from 32-bit lengths to size_t. 'size_t' is the best practice for buffer lengths, and it's what the rest of the crypto library uses. Moreover, all the 64-bit ChaCha assembly functions actually already treated the length as 64-bit, despite it being declared as 32-bit in C on arm64, ppc64, and x86_64. For arm64 and x86_64, this caused unspecified behavior due to the high 32 bits of the corresponding register having an unspecified value in those architectures' ABIs. However, in practice these bits are always zero and no issue occurred. (ppc64 was fine too, since there the ABI zero-extends 32-bit arguments.) These issues date to the original introduction of the ChaCha code. However, as noted above, they don't have any real-world impact currently; so this is an API robustness improvement only. Reported-by: Vladimir Kukharenko <vladimir@genproof.com> Closes: https://lore.kernel.org/r/20261012-libcrypto-4gib-lengths-v1-0-ea566c129a2e@genproof.com Tested-by: Vladimir Kukharenko <vladimir@genproof.com> Link: https://patch.msgid.link/20261014152604.323310-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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0b58c136c2 |
lib/crypto: poly1305: Use size_t length
Upgrade the Poly1305 functions from 32-bit lengths to size_t. 'size_t' is the best practice for buffer lengths, and it's what the rest of the crypto library uses. Moreover, all the 64-bit Poly1305 assembly functions actually already treated the length as 64-bit, despite it being declared as 32-bit in C on arm64, mips64, ppc64, and riscv64: - On arm64, this caused unspecified behavior due to the high 32 bits having an unspecified value in that architecture's ABI. However, in practice these bits are always zero and no issue occurred. (ppc64 was fine too, since there the ABI zero-extends 32-bit arguments.) - On mips64 and riscv64, this caused incorrect behavior on lengths above S32_MAX, due to the sign extension done by those architectures' ABIs. Note that no current callers pass lengths over S32_MAX. Also, the expression 'desc->buflen + nbytes >= POLY1305_BLOCK_SIZE' in poly1305_update() could overflow if nbytes was in [UINT_MAX - 14, UINT_MAX]. Note that again, no current callers pass lengths this large. These issues date to the original introduction of the Poly1305 code. However, as noted above, they don't have any real-world impact currently; so this is an API robustness improvement only. Reported-by: Vladimir Kukharenko <vladimir@genproof.com> Closes: https://lore.kernel.org/r/20261012-libcrypto-4gib-lengths-v1-0-ea566c129a2e@genproof.com Tested-by: Vladimir Kukharenko <vladimir@genproof.com> Link: https://patch.msgid.link/20261014152604.323310-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Jakub Kicinski
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f5e575a787 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-7.3-rc8). No conflicts. Adjacent changes: drivers/net/ethernet/microchip/lan865x/lan865x.c |
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Thomas Weißschuh
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5062889371 |
vdso/gettimeofday: Avoid runtime conditional in do_hres_timens()
Currently the derivation of the non-namespaced clock from its namespaced sibling uses a runtime conditional. This conditional mirrors the VDSO_RAW check in __cvdso_clock_gettime_common(), in a non-obvious way. Replace the runtime conditional with unconditional pointer arithmetic, which removes the duplication of logic and also is smaller and faster. Also get rid of the weird double use of the 'vc' variable, pointing both to the array of clocks and later to one specific one. This saves 31 bytes of .text on x86_64. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260921-vdso-timens-conditional-v1-1-eac173f8bd92@weissschuh.net |
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Thomas Weißschuh
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d6df494a01 |
vdso: Remove unnecessary vdso/vsyscall.h includes
None of these files uses anything from the header. Remove the inclusion. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260909-vdso-asm-generic-vsyscall-h-v1-13-63ae856cc659@linutronix.de |
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Thomas Weißschuh
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ca0da001d3 |
vdso/getrandom: Define fallback __arch_get_vdso_u_rng_data() in getrandom.c
__arch_get_vdso_u_rng_data() is only used in getrandom.c. vsyscall.h has become a dumping ground for different kinds of fallbacks. Move the fallback function definition into getrandom.c, similar to other fallbacks. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260909-vdso-asm-generic-vsyscall-h-v1-3-63ae856cc659@linutronix.de |
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Thomas Weißschuh
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4fba7bb3e7 |
vdso/gettimeofday: Define fallback __arch_get_vdso_u_time_data() in gettimeofday.c
__arch_get_vdso_u_time_data() is only used in gettimeofday.c. vsyscall.h has become a dumping ground for different kinds of fallbacks. Move the fallback function definition into gettimeofday.c, similar to other fallbacks. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260909-vdso-asm-generic-vsyscall-h-v1-2-63ae856cc659@linutronix.de |
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Daniel Borkmann
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4532e525b2 |
selftests/bpf: Remove the old test_bpf module
The instruction tests of the test_bpf module live in the BPF selftests now, as the jit_insns test of test_progs, which BPF CI runs on every architecture it covers, and its skb_segment tests have a KUnit successor in net/core/net_test.c. Remove the module together with its Kconfig entry, the test_kmod.sh and test_bpf.sh wrappers of the bpf and net selftests, the config fragments and defconfigs that enabled it, as well as all other references to it and symbol exports in core kernel. For archs wanting to support BPF JITs, it's time they move over to the BPF selftests for proper coverage. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20261013171230.523677-19-daniel@iogearbox.net Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> |
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Linus Torvalds
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0fcb05b723 |
Merge tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fixes from Eric Biggers: "Fix two Poly1305 bugs including a lost carry bit, and add a regression test" * tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crypto: tests: Add Poly1305 split-update carry regression test lib/crypto: arm64: Fix lost Poly1305 carry when resuming NEON state lib/crypto: poly1305: Use memzero_explicit() in poly1305_final() |
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Andy Shevchenko
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a75d9cc33d |
lib/vsprintf: Use EXPORT_SYMBOL_IF_KUNIT() to export symbols
Replace EXPORT_SYMBOL_FOR_MODULES() with EXPORT_SYMBOL_IF_KUNIT() to mark the symbols as visible only if CONFIG_KUNIT is enabled. Kunit test should import the namespace EXPORTED_FOR_KUNIT_TESTING to use these marked symbols. This is the standard way for all KUnit tests. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Tamir Duberstein <tamird@kernel.org> Link: https://patch.msgid.link/20260714122143.743227-1-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek <pmladek@suse.com> |
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Bence Csokas
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b2f3a170ae |
cache: Make cpu_cache_invalidate_memregion() error out if there are no handlers
Currently, if there are no registered handlers, cpu_cache_invalidate_memregion() returns 0. Callers are expected to check cpu_cache_has_invalidate_memregion() and return -ENXIO themselves, instead of calling this function. If a caller forgets to do this, they may erroneously think the operation succeeded. This is in contrast to x86, where cpu_cache_invalidate_memregion() itself checks if the operation is supported, and returns -ENXIO if it is not. Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com> Signed-off-by: Bence Csokas <bence.csokas@arm.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> |
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Eric Biggers
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40f47fa10a |
lib/crypto: x86/sha512: Follow the normal %rbp convention
The SHA-512 assembly functions push callee-save GPRs to the stack
*before* they set up the frame pointer (%rbp). (They are leaf
functions, but they need to set up a frame pointer anyway because they
allocate a 32-byte-aligned buffer on the stack.)
As a result, during these functions, 8(%rbp) doesn't contain a return
address like it is supposed to.
This differs from the convention used by C code, and it interferes with
the frame pointer unwinder (CONFIG_UNWINDER_FRAME_POINTER=y).
Specifically, if a call trace is dumped in these functions, then all
entries are populated purely from the fallback scan of the entire stack:
RIP: 0010:sha512_transform_rorx+0x673/0xdf0
[...]
Call Trace:
<TASK>
? sha512_blocks_avx2+0x37/0x60
? __sha512_update+0x80/0x230
? sha512+0x31/0x190
? sha512+0x114/0x190
[...]
? do_syscall_64+0x6f/0x3e0
With this fix to follow the normal %rbp convention, the call trace is
generated reliably:
RIP: 0010:sha512_transform_rorx+0x90c/0xdf0
[...]
Call Trace:
<TASK>
sha512_blocks_avx2+0x37/0x60
__sha512_update+0x80/0x230
sha512+0x114/0x190
[...]
do_syscall_64+0x6f/0x3e0
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://patch.msgid.link/20261011134843.166585-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Eric Biggers
|
cc76c9b82b |
lib/crypto: x86/sha256: Follow the normal %rbp convention
Some of the SHA-256 assembly functions push callee-save GPRs to the
stack *before* they set up the frame pointer (%rbp). (They are leaf
functions, but they need to set up a frame pointer anyway because they
allocate a 16- or 32-byte-aligned buffer on the stack.)
As a result, during these functions, 8(%rbp) doesn't contain a return
address like it is supposed to.
This differs from the convention used by C code, and it interferes with
the frame pointer unwinder (CONFIG_UNWINDER_FRAME_POINTER=y).
Specifically, if a call trace is dumped in these functions, then all
entries are populated purely from the fallback scan of the entire stack:
RIP: 0010:sha256_transform_rorx+0xd78/0x1120
[...]
Call Trace:
<TASK>
? sha256_blocks_avx2+0x37/0x70
? __sha256_update+0x77/0x220
? sha256+0x9d/0x110
[...]
? do_syscall_64+0x6f/0x3e0
With this fix to follow the normal %rbp convention, the call trace is
generated reliably:
RIP: 0010:sha256_transform_rorx+0xdae/0x1120
[...]
Call Trace:
<TASK>
sha256_blocks_avx2+0x37/0x70
__sha256_update+0x77/0x220
sha256+0x9d/0x110
[...]
do_syscall_64+0x6f/0x3e0
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://patch.msgid.link/20261011134843.166585-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Eric Biggers
|
0b173877fb |
lib/crypto: x86/sha1: Follow the normal %rbp convention
Some of the SHA-1 assembly functions push callee-save GPRs to the stack
*before* they set up the frame pointer (%rbp). (They are leaf
functions, but they need to set up a frame pointer anyway because they
allocate a 16- or 32-byte-aligned buffer on the stack.)
As a result, during these functions, 8(%rbp) doesn't contain a return
address like it is supposed to.
This differs from the convention used by C code, and it interferes with
the frame pointer unwinder (CONFIG_UNWINDER_FRAME_POINTER=y).
Specifically, if a call trace is dumped in these functions, then all
entries are populated purely from the fallback scan of the entire stack:
RIP: 0010:sha1_transform_avx2+0x1921/0x1ea0
[...]
Call Trace:
<TASK>
? sha1_transform_avx+0x2a9/0xc90
? sha1_blocks_avx2+0x78/0x140
? kernel_fpu_end+0x2d/0x40
? sha1_blocks_avx2+0x52/0x140
? sha1_update+0x77/0x220
[...]
? do_syscall_64+0x6f/0x3e0
With this fix to follow the normal %rbp convention, the call trace is
generated reliably:
RIP: 0010:sha1_transform_avx2+0x66e/0x1ea0
[...]
Call Trace:
<TASK>
sha1_blocks_avx2+0x78/0x140
sha1_update+0x77/0x220
[...]
do_syscall_64+0x6f/0x3e0
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://patch.msgid.link/20261011134843.166585-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
|
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Yiwei Lin
|
cc459ecd93 |
rbtree_test: Use rb_add_augmented_cached() for the cached augmented test
insert_augmented_cached() open-codes the descent that the generic rb_add_augmented_cached() helper provides. Use the helper instead, so that rbtree_test covers it: it is what sched/eevdf relies on and nothing in lib/ exercises it today. Signed-off-by: Yiwei Lin <s921975628@gmail.com> Assisted-by: LLM Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20261005093236.62702-5-s921975628@gmail.com |
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Yiwei Lin
|
9fc91ae685 |
rbtree_test: Use rb_add() and rb_add_cached() for the basic tests
insert() and insert_cached() open-code exactly what the generic rb_add() and rb_add_cached() helpers do. Use the helpers instead. Besides removing duplicated code, this makes rbtree_test cover the helpers themselves, which is what most in-tree rbtree users call nowadays. Signed-off-by: Yiwei Lin <s921975628@gmail.com> Assisted-by: LLM Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20261005093236.62702-2-s921975628@gmail.com |
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Peter Zijlstra
|
840e23085b |
Merge branch 'tip/sched/urgent'
Pickup dependencies; notably the RB-tree fix. Signed-off-by: Peter Zijlstra <peterz@infradead.org> |
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Dan Carpenter
|
b599253012 |
mm/hmm/test: reject overflowing page counts
The number of pages comes directly from userspace. Shifting a value
larger than ULONG_MAX >> PAGE_SHIFT discards its high bits before the
existing end-address check. A request for a huge number of pages can
therefore be accepted and processed as a much smaller request.
Reject page counts that cannot be represented as a byte size before
performing the shift.
So far as ChatGPT and I can tell this doesn't cause an issue in practice
but preventing this integer overflow is the correct thing to do.
Link: https://lore.kernel.org/6f0d39089e938d4f53dc72632eb84aca34de7015.1789457465.git.error27@gmail.com
Fixes:
|
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Kees Cook
|
e3f8dfafd7 |
docs: core-api: Document the seq_buf API
The kernel-doc in include/linux/seq_buf.h and lib/seq_buf.c documents the seq_buf interface, but no .rst file pulls either of them in, so none of it reaches the generated documentation. Add the missing kernel-doc for seq_buf_clear() and seq_buf_init(), and a Sequence Buffers section to the kernel API documentation. The static internal helper seq_buf_can_fit() is left out. Additionally fix seq_buf_hex_dump() indentation to avoid the reported Sphinx error: ERROR: Unexpected indentation. WARNING: Block quote ends without a blank line; unexpected unindent. Verified with "make SPHINXDIRS=core-api htmldocs", which rendered happily into core-api/kernel-api.html. Assisted-by: LLM Co-developed-by: Bill Wendling <morbo@google.com> Signed-off-by: Bill Wendling <morbo@google.com> Tested-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20261005155708.1471260-12-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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Bill Wendling
|
61ef3f1490 |
seq_buf: Add seq_buf_init_append()
Several strlcat() call sites being converted to seq_buf need behavior seq_buf doesn't currently provide. The normal seq_buf_init() always empties the buffer (sets its "len" to 0) via seq_buf_clear(). Code migrating from strlcat(buf, ...), which appends to whatever buf already contains, can't use seq_buf_init() without discarding that existing content. Add seq_buf_init_append(), which preserves the existing contents and positions the seq_buf to append after it. A buffer with no NUL within its size starts out overflowed, as strlcat() treats it as already truncated. Add KUnit tests for behavior coverage. Tests passed under qemu on ARCH=x86_64 with GCC 16.2.0 and CONFIG_KASAN=y, and on big-endian ARCH=s390 with GCC s390x-linux-gnu 16.2.0. Assisted-by: LLM Signed-off-by: Bill Wendling <morbo@google.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Co-developed-by: Kees Cook <kees@kernel.org> Link: https://patch.msgid.link/20261005155708.1471260-9-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |