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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Linus Torvalds
|
93e4b3076b |
Merge tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc/IIO/etc driver updates from Greg KH:
"Here is the big set of char, misc, iio, counter, fpga, and other small
driver subsystems for 7.3-rc1.
Overall, due to some driver removals we only added a bit more code
than removed, which was a nice change. Highlights in this merge
request are:
- Loads of IIO driver updates and additions
- binder driver updates (more on that below...)
- Removal of the SGI XP and GRU drivers as they are not used anymore
and turn out to be pretty insecure overall
- Removal of the obsolete ibmasm driver as it's not being used
anymore
- Coresight driver updates and additions
- Mei driver udpates
- Counter driver updates
- FPGA driver updates
- ICC driver updates
- lots and lots of other tiny driver updates to resolve reported
issues
All of these have been in linux-next for a while"
* tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits)
iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
iio: adc: pac1921: fix wrong channel used in trigger handler read
iio: light: gp2ap002: re-enable irq if runtime suspend fails
iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
iio: light: apds9306: fix PM reference leak in apds9306_read_data()
iio: gyro: mpu3050: fix sign of raw angular velocity readings
iio: srf04: fix pm_runtime handling on probe error path
iio: adc: ad4080: configure backend data size
iio: adc: adi-axi-adc: add data size support for AD408X backend
iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable
iio: dac: ad5446: fix OF module device table
iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask
iio: light: opt4001: Reject integration times with a non-zero seconds part
iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()
iio: light: opt4001: Fix power down clearing bits of the wrong register
iio: light: opt4060: Fix incorrect register name in threshold read error message
iio: light: opt4060: Fix pointer type passed to div_u64_rem()
iio: light: opt4060: Reject integration times with a non-zero seconds part
iio: light: ltrf216a: fix runtime PM reference leak in error path
iio: pressure: dps310: fix NULL pointer dereference on ACPI probe
...
|
||
|
Linus Torvalds
|
e5f9260615 |
Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton: - "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam Vargas) Validate and bound all input lengths and count fields in the o2dlm migration and recovery receive handlers to prevent memory corruption and kernel panics from malformed cluster messages - "ocfs2: validate xattr entry bounds" (Cen Zhang) Validate OCFS2 extended attribute entry name and value bounds during metadata reads to prevent out-of-range memory accesses during retrieval or listing operations. - "taskstats: fix cgroupstats invalid fd handling and add selftests" (Yiyang Chen) Return -EBADF when cgroupstats receives an invalid file descriptor to prevent caller hangs and misleading success ACKs. Add a kselftest to validate valid cgroup v1 queries and verify proper error handling across different Netlink flag combinations. - "misc lib/raid/ improvements v2" (Christoph Hellwig) Improve benchmark-based algorithm selection for the XOR and RAID6 libraries, add KUnit benchmark tests, and cleanup minor implementation details. - "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi) Fix sleeping-in-atomic, lock order inversion and error-path cleanup bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping configfs_depend_item() calls and using unlocked variants from callback context. Ensure failed pin attempts properly decrement user counts and unpin partially initialized heartbeat regions to prevent memory leaks and unprotected states. - "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()" (Vincent Mailhol) Fix an off-by-one which could cause an out-of-bounds read. - "ocfs2: harden heartbeat teardown races" (Cen Zhang) Fix two OCFS2 heartbeat/o2net teardown races found by KASAN. - "taskstats: tidy up the cpumask command path" *Bradley Morgan) make two small cleanups in kernel/taskstats.c. - "ocfs2: validate active orphan slots during inode read" (ZhengYuan Huang) Validate active ordinary and append-DIO orphan slots read from OCFS2 dinodes at the metadata boundary to prevent corrupted slot indices from causing out-of-bounds array accesses. - "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng) Enforce strict boundary checks on directory entry record lengths and offset calculations during OCFS2 directory re-scans to prevent out-of-bounds memory reads and directory position corruption. * tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (95 commits) mailmap: fix bouncing address for Taniya Das ocfs2: bound-check dir entries in the inline-data re-validation scan ocfs2: bound-check dir entries in the readdir re-validation scan squashfs: avoid thundering-herd cache wakeups prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator mailmap: update email address for Linfeng Sun lib/interval_tree: fix allocation warning messages checkpatch: add NOKPROBE_SYMBOL to the whitelist of lines that can occur immediately after functions Squashfs: check block offset is not negative signal: factor out the kernel reserved si_code check ocfs2: fix readdir position truncation on 32-bit kernels ocfs2: fix cached cluster count after suballocator reclaim ocfs2: fix circular locking dependency in ocfs2_init_acl() ocfs2: validate DIO orphan slot during inode read ocfs2: validate orphan slot during inode read selftests/prctl: fix non-anonymous VMA mapping in set-anon-vma-name test MAINTAINERS: add IRC and patchwork for LTP include/linux/list.h: mark list_add and __list_add as __always_inline tools/mm: prevent page_owner_sort from truncating input hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help ... |
||
|
Linus Torvalds
|
2f0f6b0773 |
Merge tag 'modules-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull module updates from Petr Pavlu: - Remove unnecessary module::args. Nowadays, no parameter-handling code points into the module::args buffer. The last user of module::args in xtensa/simdisk is updated and the data is then removed - Add Rust support for boolean parameters. This will initially be used by the Rust null block driver - Fix clearing the current charp parameter value when setting a new one fails due to an allocation failure - Improve the debugging code for kmod (request_module()) duplicates. Fix a potential use-after-free when waiting on a duplicate request and make several general improvements to the code - Fix the symbol size returned when looking up a data symbol through kallsyms - Smaller fixes and cleanups * tag 'modules-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: params: fix charp corruption on allocation failure module: validate string table section types module/dups: Clean up includes module/dups: Use strcmp() to compare module names module/dups: Use scope-based cleanup helpers module/dups: Avoid unnecessary kmod_dup_req allocations module/dups: Fix use-after-free in kmod_dup_req lifetime handling module/dups: Inform duplicate requests about the result directly rust: module_param: support bool parameters rust: module_param: return value by copy from `value` module: Remove unnecessary module::args xtensa/simdisk: Avoid referring to module::args module: Remove unused DISCARD_EH_FRAME definition from module.lds.S module: procfs: use matching type for accumulator in module_total_size() module: use strscpy() to copy module names in stats and dup tracking params: fix path of /sys/module/XYZ/parameters/ in comment module/kallsyms: fix nextval for data symbol lookup |
||
|
Linus Torvalds
|
ed3b875bea |
Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "mm: drop "sub" prefix from various places" (Dev Jain)
page->folio conversion and a naming cleanup
- "mm/kasan: remove redundant initialization for kasan_flag_write_only"
(Igor Putko)
KASAN cleanup work
- "mm/filemap: reduce unnecessary xarray lookups" (Chi Zhiling)
Small speedup in the pagecaache read code
- "mm/percpu: Fix possible NOFS/NOIO reclaim recursion" (Kaitao Cheng)
Improve the vmalloc code - mainly the avoidance of GFP_KERNEL
allocations when the caller asked for GFP_NOFS or GFP_NOIO
- "mm/kmemleak: avoid soft lockup when scanning task stacks" (Breno
Leitao)
Avoid a soft lockup watchdog trigger from the kmemleak scanning code
in extreme situations
- "mm/page_owner: misc cleanups" (Ye Liu)
Cleanups to the page_owner code. For some reason lots of people have
been working on the page_owner code this cycle.
- "mm: convert to walk_page_range_vma() to eliminate find_vma()"
(Kefeng Wang)
Simplify and accelerate the page walking library function
- "mm/migrate: preparatory cleanups for batch copy and offload"
(Shivank Garg)
Cleanups in the migration code
- "mm/page_owner: add per-fd filter infrastructure for print_mode and
NUMA filtering" (Zhen Ni)
Per-fd filtering to page_owner in order to reduce the sometimes vast
amount of output it can produce
- "mm: Refactor bootmem gigantic hugepage allocation" (Muchun Song)
Fixes and preparatory cleanups around bootmem HugeTLB handling,
sparse initialization ordering, and related vmemmap setup
- "mm/zsmalloc: reduce lock contention in zs_free()" (Wenchao Hao)
Reduce lock contention in zs_free(), which dominates the unmap path
under memory pressure on Android (LMK kills) and on x86 servers
running zswap-heavy workloads.
Up to 1.83x improvement in microbenchmarking.
- "move alloc_tag.c file under mm/" (Suren Baghdasaryan)
- "samples/damon: handle damon_{start,stop}() failures" (SJ Park)
Fix improper handling of damon_start(), damon_stop(), and
damon_call() failures across DAMON sample modules to prevent
potential memory leaks, operation disruptions and use-after-free
bugs
- "mm/damon/sysfs: kobject_del() directories that users can
create/remove" (SJ Park)
Fix delayed sysfs directory removal under DEBUG_KOBJECT_RELEASE
causeing creation failures due to duplicate directory names by adding
missing kobject_del() calls before creating new directories
- "mm: cleanup clear_not_present_full_ptes()" (David Hildenbrand)
Clean up the core pte handling code
- "selftests/damon: misc fixes for test bugs" (Kunwu Chan)
Fix several bugs in the DAMON selftests
- "selftests/damon: fix memcg_path staging handling" (Cheng Nie)
Fix a bug in _damon_sysfs.py for damos_filter memcg_path setup, and
add a test case for it in sysfs.py.
- "selftests/damon: test kdamond refresh_ms" (Ruslan Valiyev)
Selftest coverage for DAMON's refresh_ms sysfs feature by updating
the test control module and verifying that scheme stats update
automatically without manual intervention
- "mm/damon: five misc fixups" (Akinobu Mita)
Miscellaneous DAMON fixups.
- "mm/damon/core: detect internal variation above max_nr_regions/2"
(Jiayuan Chen)
Fix DAMON's region splitting behavior when region counts exceed half
the maximum budget by dynamically scaling down the split fraction as
the limit approaches, preventing large regions from staying un-split,
and add corresponding KUnit test coverage
- "mm: preparatory patches for PMD level swap entries" (Usama Arif)
Refactor and clean up PMD softleaf helpers, call sites, and
architecture flags to lay the groundwork for a follow-up series that
introduces PMD page table swap entries
- "mm/damon: update, optimize, and clean up doc, tests, and code" (SJ
Park)
Update DAMON design and ABI documentation, expands unit and selftest
coverage, optimize damon_commit_target_regions(), and clean up
recently added sysfs interface code for better readability
- "mm/vmpressure: reduce CPU, memory and code overhead on cgroup v2"
(Usama Arif)
Optimize vmpressure() by skipping unnecessary work on cgroup v2 for
userspace event notifications and refactor v1-only eventfd handling
into mm/memcontrol-v1.c to reduce memory overhead and code complexity
- "selftests/mm: refactor pkey helpers and fix mmap error handling"
(Hongfu Li)
Refactor pkeys shared tracing and assertion helpers into a common
file, unify protection key selftests to use consistent diagnostic
logging and assertions, and enforce standardized MAP_FAILED return
checks for mmap() calls across the tests
- "mm/damon: optimize out nr_accesses_bp" (SJ Park)
Replace the error-prone, continuously updated nr_accesses_bp field in
damon_region with an on-demand moving sum function, reducing
structure memory overhead and avoiding state corruption bugs
- "Open HugeTLB allocation routine for more generic use" (Ackerley Tng)
Decouple HugeTLB folio allocation from VMA dependencies by
introducing hugetlb_alloc_folio(), enabling subsystems like
guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs
- "mm/damon: provide pseudo moving sum probe_hits" (SJ Park)
Integrate DAMON's probe_hits attribute counter into the pseudo moving
sum infrastructure, enabling real-time, online monitoring without
waiting for full aggregation intervals
- "mm: Some cleanups for page allocator APIs" (Brendan Jackman)
Simplify and refactor the page allocator entry points and flags by
unifying allocation paths, adding internal alloc_flags arguments, and
eliminating redundant __ prefixed alloc_pages variants.
- "Fix incorrect access of hugetlb pte entries" (Dev Jain)
Enforce the consistent use of huge_ptep_get() instead of ptep_get()
for HugeTLB entries and fixes an unaligned address issue in arm64's
huge_ptep_get() implementation
- "mm/damon: validate all parameters in the core" (SJ Park)
Consolidate parameter validation into the DAMON core specifically
within damon_start() and damon_commit_ctx() to centralize error
checking, eliminate caller-side redundant checks and to improve
maintenance efficiency
- "tools/mm/page_owner_sort: fix filtering and cleanup issues" (Yichong
Chen)
Rename is_need() to filter_record() for clearer return semantics, fix
per-record allocation memory leaks and bound output copies in
search_pattern() to address an existing buffer issue
- "memcg: bail out reclaim when memcg is dying" (Jiayuan Chen)
Mitigate a system-wide stall which occurs when a cgroup is removed
while one of its memory control files is doing synchronous reclaim
- "mm/memory-failure: add panic option for unrecoverable pages" (Breno
Leitao)
Introduce an opt-in vm.panic_on_unrecoverable_memory_failure sysctl
that immediately panics the kernel on unrecoverable memory errors in
kernel-owned pages to preserve error context and prevent delayed,
silent data corruption
- "mm/damon: refactor damon_{start,stop,commit}() for simple error
handling" (SJ Park)
Refactor the DAMON core API functions to guarantee that all contexts
are fully stopped when damon_start(), damon_stop(), or damon_commit()
fail, eliminating the need for complex and error-prone caller-side
cleanup code
- "Keep tail page private zero at free and folio split" (Zi Yan)
Add checks to ensure tail_page->private is zero when freeing compound
or high-order pages and when promoting tail pages during large folio
splits. By validating these fields at free and split time, it allows
the removal of redundant private field clearing inside
prep_compound_tail()
- "mm: drop redundant lru_add_drain in anon folio reuse paths" (Barry
Song)
Eliminate redundant lru_add_drain() calls in
wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads
- "mm: clean up folio LRU and swap declarations" (Jianyue Wu)
Reorganize folio LRU and swap code by relocating page-cluster state
to mm/swap_state.c, renaming mm/swap.c to mm/folio.c, and moving
MM-internal reclaim declarations into mm/internal.h.
- "userfaultfd: working set tracking for VM guest memory" (Kiryl
Shutsemau)
Add userfaultfd support for tracking the working set of VM guest
memory, so a VMM can identify hot pages and reclaim cold ones to
tiered or remote storage
- "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 2)" (David
Hildenbrand)
Remove the remaining pieces of CONFIG_HAVE_BOOTMEM_INFO_NODE,
performing some smaller cleanups around freeing of reserved vmemmap
pages on the way.
- "mm/damon: update probe hits for runtime parameter commits" (SJ Park)
Ensure that DAMON's probe_hits attribute counter is properly updated
when monitoring intervals are changed at runtime, matching the
behavior of nr_accesses. To achieve this, it refactors and renames
existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- "KSM: performance optimizations for rmap_walk_ksm" (xu xin)
Resolve a severe KSM reverse-mapping performance bottleneck where
thousands of split VMAs sharing a single anon_vma cause extended lock
contention.
By adding an interval-filtering check during the rmap walk, it
reduces worst-case anon_vma lock hold times from over 500ms down to
under 2ms, preventing application freezes and latency spikes under
memory pressure.
- "mm: split a couple of headers from internal.h" (Mike Rapoport)
Split declarations related to mm_init, memblock, vmalloc and sparse
into new headers
- "KSM: use linear_page_index in collect_procs_ksm()" (xu xin)
Apply the interval tree optimization from rmap_walk_ksm() to
collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling.
It hoists loop-invariant address initialization and restricts the
anon_vma_interval_tree_foreach walk to a targeted page offset range,
reducing redundant checks and improving lookup efficiency.
- "selftests/mm: avoid false failures in hugetlb and KSM tests" (Sayali
Patil)
Fix issues in the hugetlb and KSM MM selftest categories that can
report failures when the prerequisites for the tests are not
satisfied
- "mm/damon: introduce data attributes only monitoring" (SJ Park)
Introduce attribute-weighted region management in DAMON, allowing
users to prioritize specific data attributes (such as page sizes or
cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely
disable access tracking and adjust monitoring regions based on
weighted probe-hit counters to optimize monitoring quality for
attribute-focused workloads.
- "mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings"
(Stanislav Kinsburskii)
Extend hmm_range_fault() to support userfaultfd-backed regions by
allowing the mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd
regions while preserving backward compatibility for existing callers.
- "mm: make VMA page offset handling more consistent" (Lorenzo Stoakes)
Clean up and standardize how vma->vm_pgoff is accessed and
manipulated across file-backed and anonymous mappings in the kernel
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while
renaming rmap interval tree helpers to better reflect their
functionality.
These changes establish a cleaner foundation for future work that
will unify virtual page offset indexing for all anonymous and CoW'd
folios.
- "mm: handle device-private PMDs in walk callbacks" (Usama Arif)
Address kernel panics and state corruption caused by MM walk
callbacks reaching non-present device-private PMD swap entries
created during HMM migrations
It ensures that functions which acquire pmd_trans_huge_lock()
properly recognize device-private PMDs instead of assuming a present
THP or a standard migration entry.
- "mm/rmap: Refactor try_to_unmap_one" (Dev Jain)
Refactor try_to_unmap_one by modularizing Hugetlb,
anonymous-lazyfree, and anonymous-swapbacked logic into dedicated
functions, laying the structural groundwork for batched anonymous
large folio unmapping.
- "Docs/ABI/damon: sysfs ABI document fixes and additions" (Song Hu)
Fix typos and fills in missing entries in the DAMON sysfs ABI
document
- "dax/kmem: atomic whole-device hotplug via sysfs" (Gregory Price)
Introduce an atomic sysfs state attribute and supporting DAX/MM
infrastructure to prevent userland races when offlining and removing
entire memory regions
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- "mm: convert more vm_flags_t users to vma_flags_t" (Lorenzo Stoakes)
Continue transitioning the kernel from the deprecated vm_flags_t type
to vma_flags_t across core memory management infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- "Two small patches to clean up mm/mm_slot.h" (xu xin)
Refactor mm_slot.h by introducing mm_slot_remove() to unify duplicate
slot deletion sequences in khugepaged and KSM. It also adds code
documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- "mm/damon/core: hide core-private struct fields" (SJ Park)
Clean up DAMON core structures by consistently marking internal-only
fields with private: comment tags to prevent improper direct access
from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- "mm/damon: unurgent fixes for infinite loop, NULL de-ref and races"
(SJ Park)
Address potential infinite loops, NULL dereferences, and race
conditions identified in DAMON
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- "mm/page_alloc: fixes for free_pages_nolock() on RT/UP" (Brendan
Jackman)
Fix an NMI safety flaw in __free_frozen_pages() where freeing pages
on non-SMP or PREEMPT_RT kernels can bypass can_spin_trylock() checks
via non-PCP or isolated migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- "mm/page_alloc: couple of followups for recent cleanups" (Brendan
Jackman)
Clean up and update page allocator nomenclature, documentation, and
debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete
VM_BUG_ON() assertions in allocation paths.
- "mm/mseal: further cleanups" (Lorenzo Stoakes)
Refactor and simplify the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO,
eliminates mm_struct parameters to enforce that sealing applies only
to current->mm, and streamlines overall logic and comments with no
functional changes intended.
- "mm/vmscan: fix swappiness=max and clean up per-node proactive
reclaim" (Ridong Chen)
Resolve reclaim behavior bugs and clean up function parameters across
memory reclaim paths
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead
of collapsing all failures into -EAGAIN, and removes the obsolete
gfp_mask parameter from __node_reclaim().
- "mm: mincore: misc cleanups" (Kefeng Wang)
Clean up and simplifies the mincore code. Most importantly, it
removes the historical special behavior that always reports VM_PFNMAP
pages as non-resident.
- "mm/huge_memory: drop dead split helper variants" (Kiryl Shutsemau)
Two trivial cleanups in the folio split API
- "mm/damon: fix uninitialized DAMOS field and kunit exec expectation
bugs" (SJ Park)
Resolve minor operational and testing bugs in DAMON identified by
Sashiko. It initializes the damos->last_applied field to prevent
occasional efficiency degradation and fixes invalid memory accesses
in DAMON KUnit tests during test failure handling.
- "cleanup for stable_page_flags()" (Jinjiang Tu)
Clean up and refactor stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- "Batch unmap of uffd-wp file folios" (Dev Jain)
Extend batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching
capabilities to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- "mm/early_ioremap: clarify and clean up early_ioremap_reset()"
(Sang-Heon Jeon)
Clarify and clean up the architecture-specific usage of
__late_set_fixmap() and __late_clear_fixmap() after
early_ioremap_reset()
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset
calls in the RISC-V and ARM64 architectures.
- "mm: fix reclaim storms in defrag_mode" (Johannes Weiner)
Address severe performance regressions, swap storms, and spurious
OOMs caused by vm.defrag_mode=1 under high memory pressure in Meta
production
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- "zram: lockmap tweaks" (Sebastian Siewior)
Optimize and fix lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolate lock classes across multiple instances
This reduces memory overhead by replacing per-entry lockdep_map
instances with a single map per struct zram, and assigns a dynamic
lock_class_key to each instance to prevent false deadlock reports
when different zram devices are backed by distinct filesystems.
* tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (501 commits)
selftests/mm: thuge-gen: fix test_shmget() for PAGE_SIZE check
selftests/mm: unpoison pages in memory-failure teardown
mm/shmem: downgrade final i_blocks check in shmem_evict_inode() to pr_warn()
mm/khugepaged: replace mutex_lock/mutex_unlock usage with guard macro
mm/zsmalloc: fix release order of locks in zs_page_migrate()
Documentation: zram: remove sections numbering
ksm: stop iterating VMAs when ksm_test_exit returns true
mm: fold userfaultfd_rwp() to false without CONFIG_ARCH_HAS_PTE_PROTNONE
mm/migrate: report RCU-tasks quiescent states in migrate_pages_batch()
zram: use a custom key for each zram object
zram: move lockmap to be per-zram instead per table
selftests/mm: fix gup_longterm EINVAL error message
mm: page_alloc: fix non-movable reclaim storm in defrag_mode
mm: page_alloc: move capture_control to the page allocator
mm: compaction: support non-movable compaction for pageblock requests
mm: page_alloc: __GFP_FS lockdep annotation for direct compaction
hugetlb: evaluate subpool free state while locked
mm/damon: remove trailing semicolons after function definitions
mm/damon/ops-common: prevent migration fallback to non-target nodes
mm/damon: update outdated comment about DAMOS filter handling
...
|
||
|
Linus Torvalds
|
72fdff1416 |
Merge tag 'docs-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux
Pull documentation updates from Jonathan Corbet:
"It has been a not-too-busy cycle for docs; here's the highlights:
- A (hopefully) consensus change to our LLM-attribution requirements,
removing the specific model name from the Assisted-by tag
- A couple of new realtime documents
- Various docs-build-system fixes
- Ongoing work with the Chinese, Portuguese, and Japanese
translations
...and lots of typo fixes, grammar tweaks, etc"
* tag 'docs-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (85 commits)
Doc: admin-guide: pm: Remove unnecessary backticks and fix a spell
Documentation: Extend the real-time hardware bits with some firmware bits
docs: pt_BR: Reorganize process/index.rst to follow english structure
docs: conf.py: fix the 'utf-8' typo
doc tools: fix 'path' typos
Documentation: real-time: Add kernel configuration guide
docs: python: abi_regex: convert adjacent index placeholders
docs: python: abi_regex: catch the right exception for a bad regex
docs: sphinx-build-wrapper: include localversion in kernel version string
Documentation: html: adjust sidebar section titles styling
Documentation: html: show sections in the sidebar
checkpatch.pl: adapt to new Assisted-by: format
MAINTAINERS: update Traditional Chinese documentation maintainers
docs: pt_BR: process: Translate CVE documentation
docs: pt_BR: translate the management-style.rst to Brazilian Portuguese
docs: xforms_lists: support DEFINE_IDTENTRY_IRQ()
coding-assistants: simplify attribution
docs: translations: pt_BR: translate email-clients.rst
docs: pt_BR: process: Translate the security-bugs.rst
doc:it_IT: align doc-guide translation
...
|
||
|
Linus Torvalds
|
5a8cd539ac |
Merge tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Daniel Borkmann:
"Major changes:
- Redesign the verifier error reporting: failures now carry source
and instruction annotations along with the causal event history
that led to them, making program rejections far easier to debug and
repair (Kumar Kartikeya Dwivedi)
- Add arena argument support to kfuncs and struct_ops through the new
__arena and __arena__nullable suffixes (Tejun Heo, Puranjay Mohan,
Kumar Kartikeya Dwivedi, Ihor Solodrai)
- Signed BPF program loader rework to accommodate both BPF and
security community needs where the kernel runs the signature
verification at BPF_PROG_LOAD time before the LSM admission hook
(Daniel Borkmann)
- Add a set of ksock kfuncs which let BPF LSM and syscall programs
create, connect and send on UDP sockets in order to emit telemetry
data (Mahe Tardy)
- Unify helper and kfunc call argument verification and classify
kfunc arguments purely from BTF into a generated bpf_func_proto
which is computed once at add-call time (Amery Hung)
Other features and fixes:
- Enable EXECMEM_ROX_CACHE for BPF allocations on x86 (Mike Rapoport)
- Add bidirectional VLAN support to bpf_fib_lookup() through the new
BPF_FIB_LOOKUP_VLAN and BPF_FIB_LOOKUP_VLAN_INPUT flags (Avinash
Duduskar)
- Infer zext_dst from static register liveness analysis to fix 32-bit
zero-extension semantics, and remove the artificial limitations on
pointer types eligible for spilling (Eduard Zingerman)
- Inline the numeric open-coded iterator kfuncs so that bpf_for()
loops no longer pay a kfunc call on every iteration (Puranjay
Mohan)
- Add an arena-based bitmap data structure to libarena along with
serial and parallel selftests (Emil Tsalapatis)
- Teach resolve_btfids to discover kfuncs from the kernel's BTF ID
sets and to emit kfunc BTF decl tags, reducing the kernel build's
dependency on pahole features (Ihor Solodrai)
- Add BPF_F_ADJ_ROOM_DECAP_* flags to bpf_skb_adjust_room() so that
tunnel decapsulation can update the GSO and encapsulation state of
the skb (Nick Hudson)
- Fix the ring buffer pending_pos walk and the available-data
accounting on 32-bit position wrap (Israel Téllez García)
- Add memory usage accounting for arena maps and fix an mmap_lock
deadlock on arena lock failure (Jiayuan Chen)
- Add tracing_multi link info support to the kernel UAPI and bpftool,
and refactor the stack map code to run with preemption disabled
(Jiri Olsa)
- Support BPF_F_EGRESS in bpf_redirect_peer() to emit the skb in the
egress direction of the target's peer device (Jordan Rife)
- Add a KF_SPINLOCK_SAFE kfunc flag so that providers, in particular
modules, can declare kfuncs safe to call under bpf_spin_lock
instead of relying on the verifier's hard-coded allowlist (Kaitao
Cheng)
- Introduce global percpu data for BPF programs with libbpf probing
and bpftool skeleton support, and stop exposing uninitialized
kernel heap memory when copying per-CPU map values (Leon Hwang)
- Add s390 JIT support for load-acquire and store-release
instructions (Maxim Khmelevskii)
- Fix a CFI mismatch in the task work callback and an arm64 KASAN
false positive after bpf_throw() (Mykyta Yatsenko)
- Reject writes through untrusted BTF pointers and bound the
rdonly/rdwr_buf_size kfunc arguments (Nicholas Dudar)
- Invalidate RCU pointers only after the final spin unlock and
account for preempt and IRQ disabled regions as overlapping RCU
protection (Ning Ding)
- Support mixing bpf2bpf calls and tail calls on RV64, add signed
operations and 32-bit atomics to the RV32 JIT, and add timed
may_goto support (Pu Lehui, Kuan-Wei Chiu, Feng Jiang)
- Fix a use-after-free on mm_struct in bpf_find_vma() for foreign
tasks and an mmap_lock leak in the irq_work path (Sanghyun Park)
- Populate mmap-able BPF array map memory lazily which makes mmap()
O(1) instead of proportional to the map size (Song Liu)
- Introduce a jit_required flag and reject programs with inlined
helpers when no JIT is available, where the interpreter would
otherwise jump into an invalid address (Tiezhu Yang)
- Fix the x86 JIT per-CPU address resolution into an extended
register where the REX prefix dropped the high destination register
bit (Vineet Gupta)
- Reject MEM_ALLOC BTF accesses past object bounds, arena frees below
the arena base, and mixed arena and ordinary atomic paths (Yiyang
Chen)
- Fix the trampoline handling of 128-bit arguments and of return
values larger than 8 bytes (Yonghong Song)
- Ensure that any fault prone load is rewritten with exception table
handling, and fix the arena load-acquire and atomic fetch handling
in the x86, arm64, riscv and s390 JITs (Daniel Borkmann)
- Many more fixes and cleanups across the verifier, arena,
trampolines, sockmap, cgroup, ring buffer, x86/arm64/riscv/s390
JITs, libbpf, bpftool, resolve_btfids and selftests"
* tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (373 commits)
selftests/bpf: Add tests for a store on a fault prone qdisc pointer
selftests/bpf: Add tests for fault prone loads out of RCU pointers
selftests/bpf: Add tests for pointer type merge at a shared load
selftests/bpf: Remove duplicate copies of the arena spinlock qnodes
selftests/bpf: Retry stat generation in cgroup_iter_memcg
selftests/bpf: Test pseudo-function policy diagnostics
bpf: Distinguish function references in policy diagnostics
bpf: Preserve source attribution without source text
selftests/bpf: Test kfunc argument diagnostics
bpf: Correct kfunc argument diagnostics
bpf: Use canonical stack argument names in diagnostics
bpf: Preserve R0 lineage across helper calls
selftests/bpf: Exercise negative optlen in cgroup getsockopt hook
bpf: Reject negative optlen in cgroup getsockopt hook
selftests/bpf: tc_tunnel - validate decap GSO and encapsulation state
bpf: Clear decap state on skb_adjust_room shrink path
bpf: Allow new DECAP flags and add guard rails
bpf: Add BPF_F_ADJ_ROOM_DECAP_* flags for tunnel decapsulation
bpf: Refactor masks for ADJ_ROOM flags and encap validation
bpf: Name the enum for BPF_FUNC_skb_adjust_room flags
...
|
||
|
Linus Torvalds
|
c6cf4441a3 |
Merge tag 'devicetree-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring: - Add a DT maintainer profile document - Various dt-check-style improvements - Add a devres managed reserved memory region init function - Print node name on any skipped reserved memory regions - Correctly handle optional argument in of_parse_phandle_with_args_map() - Convert ti,keystone-reset, ti,da850-vpif, TI L4 interconnect, TI SmartReflex, microchip,pic32mzda-dmt, microchip,pic32mzda-wdt, TI DA8XX MSTPRI bus, and Xen VM bindings to DT schema format - Add bindings for StarFive JHB100 plic, Allwinner A733 NMI controller, MediaTek MT8173 GPU, QCom Shikra, Eliza, and Maili cpu-bwmon, and QCom Shikra SCM firmware - A couple of syntax fixes found using PoC Rust implementation of dtschema tools - Clean-ups for typos, brackets, incorrect "::" usages, and white-space style * tag 'devicetree-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (40 commits) dt-bindings: interconnect: qcom-bwmon: Add Maili cpu-bwmon compatible dtc: dt-check-style: Simplify setting depth of DtsLine dtc: dt-check-style: Add missing /dts-v1/ to few test cases dt-bindings: power: reset: ti,keystone-reset: Convert to DT schema media: dt-bindings: ti,da850-vpif: Convert to dt-schema dt-bindings: devfreq: samsung,exynos-ppmu: Use standard regex syntax dt-bindings: interrupt-controller: mediatek,mt6577-sysirq: Drop invalid JSON pointer dt-bindings: arm: omap: Convert L4 interconnect to DT schema dt-bindings: power: Convert TI SmartReflex to DT schema of: reserved_mem: Introduce devres-managed initialization function dt-bindings: interrupt-controller: Add StarFive JHB100 plic dt-bindings: irq: sun7i-nmi: Document the Allwinner A733 NMI controller dt-bindings: Correct white-space style dt-bindings: fix typos and brackets docs: dt: submitting-patches: Mention expectation about dt-check-style docs: dt: maintainer: Add Devicetree and OF maintainer profile document docs: dt: writing-schema: Extend expectations about example part of binding dt-bindings: gpu: powervr-rogue: Add MediaTek MT8173 GPU of: base: Handle optional argument in of_parse_phandle_with_args_map() dt-bindings: update Sudeep Holla's email address ... |
||
|
Linus Torvalds
|
a93f3bf4e1 |
Merge tag 'hid-for-linus-2026081901' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:
"Core:
- fix long-standing force-feedback initialization race across the
subsystem (Dmitry Torokhov)
- switch to system_dfl_wq (Marco Crivellari)
AMD-SFH:
- support for tablet-mode switch for AMD SFH-based systems (Basavaraj
Natikar)
HyperX:
- support for HyperX QuadCast 2 (Benjamin Blume)
I2C-HID:
- support for devices that provide HID descriptor solely through
the ACPI _DSM method (XIE Zhibang)
Intel-THC-HID:
- support for full I2C bus config parameters (Even Xu)
Logitech:
- HID++ 2.0 repogrammable button support (Elliot Douglas)
- Bolt receiver support for HID++ devices (Erik Håkansson)
MSI:
- support for MSI Claw (Derek J. Clark)
Steam:
- initial support for 2026 Steam Controller (Vicki Pfau)
- support for sensor events on the 2025 Steam Controller (Vicki Pfau)
And many, many other fixes for various long standing issues that were
found by new modern tools, and quite a few device ID additions"
* tag 'hid-for-linus-2026081901' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (146 commits)
HID: tmff: Use 64-bit arithmetic for force feedback scaling
HID: multitouch: reclassify HTIX5288 to WIN_8_FORCE_MULTI_INPUT_NSMU
HID: sensor: custom: Fix field sysfs group cleanup on failure
HID: sensor: custom: Fix use-after-free in enable_sensor
HID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer
HID: haptic: don't write an uninitialized value to unhandled usages
HID: intel-thc-hid: intel-quickspi: fix autosuspend cleanup during teardown
HID: intel-thc-hid: intel-quicki2c: fix autosuspend cleanup during teardown
HID: steam: Zero out inputs when disabling gamepad mode
HID: steam: Clean up locking
HID: steam: Don't set feature reports when disconnecting
HID: steam: Fix wording of connect/disconnect logs
HID: steam: Initial 2026 Steam Controller support
HID: steam: Refactor registration
HID: logitech: add Bolt receiver support for Logitech HID++ devices
HID: sensor-hub: Fix out-of-bounds write in sensor_hub_get_feature
HID: universal-pidff: stop the device when force-feedback init fails
HID: haptic: move FF initialization into .input_configured()
HID: logitech-hidpp: move FF initialization to .input_configured()
HID: megaworld: move FF initialization to .input_configured()
...
|
||
 Jiri Kosina
|
d89f04ac41 |
Merge branch 'for-7.3/core' into for-linus
- fix long-standing force-feedback initialization race across the subsystem (Dmitry Torokhov) - switch to system_dfl_wq (Marco Crivellari) |
||
|
Linus Torvalds
|
104a813376 |
Merge tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO updates from Thomas Gleixner: - Consolidate the VDSO datastore further and provide support for mlock_all() and prefaulting. - Provide 32-bit legacy time related functionality only if CONFIG_COMPAT_32BIT_TIME is enabled. The config switch exists, but architecture code still exposes the legacy functionality even disabled. Clean this up by adding the missing guards and validating at build time that the VDSO is legacy free if disabled. - Consolidate the VDSO related config options in core and drivers, which removes some non-sensical dependencies and quite an amount of #ifdeffery. - Clean up the PAGE_SIZE definition maze * tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) random: vDSO: Drop custom PAGE_SIZE definitions LoongArch: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/timer-riscv: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/arm_arch_timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/mips-gic-timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery MIPS: csrc-r4k: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery vDSO: Make clockmode constants available without CONFIG_GENERIC_GETTIMEOFDAY kbuild: Support generated asm-headers in subdirectories vdso: Rename HAVE_GENERIC_VDSO to VDSO_DATASTORE vdso: Drop HAVE_GENERIC_VDSO from architecture kconfig files vdso: Automatically select HAVE_GENERIC_VDSO if necessary MIPS: vdso: Stop using CONFIG_HAVE_GENERIC_VDSO vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATA futex: Remove dependency on HAVE_GENERIC_VDSO from FUTEX_ROBUST_UNLOCK vdso/gettimeofday: Verify COMPAT_32BIT_TIME interactions sparc: vdso: Respect COMPAT_32BIT_TIME MIPS: VDSO: Respect COMPAT_32BIT_TIME powerpc/vdso: Respect COMPAT_32BIT_TIME ARM: VDSO: Respect COMPAT_32BIT_TIME arm64: vdso32: Respect COMPAT_32BIT_TIME ... |
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Linus Torvalds
|
a0acd94e38 |
Merge tag 'objtool-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar: - Fix various klp-build bugs reported by Joe Lawrence (Josh Poimboeuf, Joe Lawrence) - Misc fixes and cleanups (Puranjay Mohan, Thomas Huth and Ingo Molnar) * tag 'objtool-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool/klp: Fix vmlinux klp relocations for EXPORT_SYMBOL_FOR_MODULES() objtool/klp: Fix .kcfi_traps special section extraction objtool/klp: Fix vmlinux .klp.symid link error for .exitcall.exit symbols objtool/klp: Fix line numbers in Module.symvers parse errors objtool/klp: Fix relocations for EXPORT_SYMBOL_FOR_MODULES() symbols objtool/klp: Allow new references to module exports objtool/klp: Don't match local symbols against exports objtool/klp: Fix cross-module klp relocation section naming objtool/klp: Explicitly disallow patching or referencing init code/data objtool/klp: Ignore replacement offset of empty x86 alternatives objtool/klp: Fix size of empty special section entries objtool/klp: Fix vmlinux .klp.symid link error for .no_trim_symbol symbols objtool/headers: Sync tools/include/linux/objtool_types.h with include/linux/objtool_types.h objtool: Replace __ASSEMBLY__ with __ASSEMBLER__ in header files objtool/klp: Fix symbol resolution for duplicate data symbols objtool/klp: Add .klp.symid for sympos disambiguation objtool/klp: Skip hidden directories when finding objects objtool/klp: Fix false module dependencies caused by dead relocs objtool/klp: Normalize Module.symvers paths to module names objtool/klp: Fix module name normalization for paths with dots |
||
|
Linus Torvalds
|
1200d84f4c |
Merge tag 'powerpc-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan: - Enable Rust for ppc64le - ppc4xx gpio driver updates - Add power12 base enablement support - Validate arch_compat against host compatibility mode - Simplify bootx_scan_dt_build_struct() in powermac platform - Implement get_direction() in cpm2 - Use cpu_relax() in ps3_create_spu() - Add NULL guard for cause_ipi in smp_muxed_ipi_message_pass - Fixes to handle pseries watchdogs in kdump path - Fix missing r2 clobber in PCREL inline assembly - Set GPIO chip parent on ppc44x - KVM: Introduce KVM_CAP_PPC_COMPAT_CAPS and wire up ioctl - KVM: Use generic xfer to guest work function - Enable to run posix cpu timers in task context - Misc fixes and cleanups Thanks to Aditya Gupta, Alice Ryhl, Amit Machhiwal, Andrew Morton, Anushree Mathur, Athira Rajeev, Bartosz Golaszewski, Cédric Le Goater, Christian König, Christophe Leroy (CS GROUP), Gary Guo, Gaurav Batra, Gautam Menghani, Gou Hao, Hari Bathini, Harsh Prateek Bora, jiazhenyuan, Jinjie Ruan, Link Mauve, Linus Walleij, Mahesh Kumar G Mahesh Salgaonkar, Michael Walle, Michal Suchánek, Mukesh Kumar Chaurasiya (IBM), Nicholas Piggin, Nikhil Kumar Singh, Praveen K Pandey, Ritesh Harjani (IBM), Rosen Penev, Saket Kumar Bhaskar, Shrikanth Hegde, Sourabh Jain, Thorsten Blum, Vaibhav Jain, Venkat Rao Bagalkote, Vishal Chourasia, Wentao Guan, and Yanfei Xu. * tag 'powerpc-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (62 commits) powerpc/pseries/iommu: switch to Default DMA window during kdump powerpc/configs: enable CONFIG_RAS to fix EDAC support KVM: PPC: Document KVM_PPC_GET_COMPAT_CAPS ioctl KVM: PPC: Book3S HV: Add support for compat CPU capabilities for KVM on PowerNV KVM: PPC: Book3S HV: Implement compat CPU capability retrieval for KVM on PowerVM KVM: PPC: Introduce KVM_CAP_PPC_COMPAT_CAPS and wire up ioctl gpio: ppc44x: use dev_name() for chip label gpio: ppc44x: fix undefined behavior in GPIO_MASK2 macro gpio: ppc44x: drop PPC-specific IO helpers gpio: ppc44x: Convert GPIO to generic MMIO gpio: ppc44x: Use platform resource helper for GPIO MMIO gpio: ppc44x: Use module platform driver helper for GPIO gpio: ppc44x: update all 4xx to 44x gpio: move ppc4xx gpio driver from arch/powerpc to drivers/gpio KVM: PPC: Use min() in kvm_vm_ioctl_check_extension() KVM: PPC: booke: Use min() in watchdog_next_timeout() powerpc/perf: Add power12 Base Performance Monitoring support powerpc: Add Power12 architected mode powerpc: Add Power12 raw mode powerpc/pseries: Limit PVR list to 16 entries for CAS negotiation ... |
||
|
Linus Torvalds
|
d24f5cdbef |
Merge tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Warn when using 'bindgen' < 0.72.1 with 'libclang' >= 22, since
that combination may fail to build. It includes a probe for the bug
in case 'bindgen' happens to be patched, and tests
In parallel, Nathan updated the instructions for the kernel.org
LLVM+Rust toolchains so that the latest version of 'bindgen' is
installed, which should avoid some of these situations
- Support testing 'rust_is_available.sh' with 'bash' as '/bin/sh'
- Fix an objtool warning by adding one more 'noreturn' function for
Rust 1.99.0 (expected 2026-10-01)
- Fix build error in the 'rusttest' target due to ambiguity when the
'rustc-dev' component is installed, which was uncovered by the work
to support Rust's GCC backend ('rustc_codegen_gcc')
- Fix future Clang warnings in the upcoming powerpc support due to
macro redefinitions in the UAPI helper header by including the
arch-aware 'ioctl.h' header
'kernel' crate:
- Rework module ownership support:
- Move the module-related types into a new 'module' module and
make the 'THIS_MODULE' pointer a constant of 'ModuleMetadata'
so that modules can provide the pointer in const contexts, and
add a 'this_module' 'const fn' to retrieve it
This was enabled by upstream Rust's work on the 'const_mut_refs'
and 'const_refs_to_static' features which were stabilized back
in Rust 1.83.0
- Teach '#[vtable]' to associate implementations with their
owning module, defaulting to the local one, including fallbacks
for doctests, uses within the 'kernel' crate (like upcoming
KUnit '#[test]'s for DRM) and 'rusttest'
- Set 'fops.owner' from the module pointer for DRM and
miscdevice
- Migrate Rust Binder and configfs away from the old
'THIS_MODULE' 'static' and finally remove it from the 'module!'
macro
- 'num' module:
- Add the new 'casts' module for lossless integer conversions
Rust's 'core' library's 'From' implementations do not cover
conversions that are not portable or future-proof. However, the
kernel supports a narrower set of architectures, which makes it
helpful to provide more infallible conversions, instead of
having developers use 'as' casts, which carry the risk of
silently losing data
This goes along with previous work we did to avoid casts in
Rust kernel code since they are more powerful than needed
Thus, provide safe 'const' conversion functions (e.g.
'usize_as_u64' and 'u64_into_u8'), as well as the
'FromSafeCast' and 'IntoSafeCast' extension traits that provide
conversions that are known to be lossless in the kernel, and an
'arch' submodule defining conversions that are known to be
lossless on particular architectures (e.g. 64-bit platforms).
For instance:
// Conversion in const context.
const USIZED_CONST: usize = u8_as_usize(255u8);
// Non-const conversions.
let a = u64::from_safe_cast(4096usize);
let b: u64 = 4096usize.into_safe_cast();
- Add 'Bounded::shr_exact' method in the vein of 'try_shrink'
which shifts a bounded right only if it loses no set bits
- Fix unsoundness issue in the 'Bounded::shr' method by
rejecting, at compile-time, shifts of at least the type's bit
width
- 'fmt' module:
- Route '{:p}' raw pointer formatting through the kernel's hashed
'%p' format to prevent address leaks, including support for
width and padding. Include tests for both 'no_hash_pointers'
case and the default (hashed) one
- Fix the '{:p}' forwarding implementation, which could print the
address of a temporary stack variable
- 'time' module:
- Make 'Delta' generic over its time unit, with a default unit of
nanoseconds ('Nsec'), preserving the existing behavior. Then,
add a 'Jiffy' time unit
- Add the 'Delta::as_millis_ceil()' method
- Fix 'as_micros_ceil()' rounding near 'i64::MAX', which could
yield a result one microsecond too small
- 'sync' module:
- Implement 'ForeignOwnable' for 'ARef<T>', allowing C code to
own an 'ARef<T>'
- Add a safe abstraction for 'rcu_barrier()'
- 'error' module: add all of the remaining error codes, except the
deprecated compatibility aliases
- 'bug' module:
- Fix build error on UML in 'warn_on!' for callers from within
the 'kernel' crate
- Fix future 'dead_code' warning on arm and loongarch64 and under
'CONFIG_BUG=n' in 'warn_on!', which would trigger with the
upcoming SRCU abstractions
- Fix future build error in 'rusttest' on cross-compilation
cases, which would trigger when 'warn_on!' has callers inside
the 'kernel' crate
- 'bitfield' module: fix build error for the upcoming support for
Rust's GCC backend ('rustc_codegen_gcc') by always inlining a
couple conversions used in tests
'pin-init' crate:
- User-visible changes:
- Merge the '__pinned_init' and '__init' methods and make 'Init'
a marker trait
- Introduce public APIs 'raw_init' and 'raw_try_init' to prevent
users from needing to invoke the internal '__pinned_init' and
'__init' methods
- Emit errors for duplicate '#[pin]' attributes
- Link 'Zeroable::zeroed' and 'pin_init::zeroed' in documentation
- Other changes:
- Fix unwind safety issues
- Clean up lint 'allow' and 'expect's
- Overhaul '#[cfg]' handling to pave the way for tuple structs
and self-referential structs
- Mark many functions as '#[inline]' for better codegen with '-C
opt-level=s' ('CC_OPTIMIZE_FOR_SIZE')
'MAINTAINERS':
- Update 'MODULE SUPPORT' to cover the new 'module' module
And some other fixes, cleanups and improvements"
* tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (54 commits)
rust: add functions and traits for lossless integer conversions
rust: kernel: add `LocalModule` fallback for `#[vtable]` `impl`s
rust: fmt: route {:p} through HashedPtr to prevent address leaks
rust: fmt: fix {:p} printing stack addresses
rust: module: update MAINTAINERS to cover module.rs
rust: macros: remove `THIS_MODULE` static from `module!`
rust_binder: use `LocalModule` for `THIS_MODULE`
rust: configfs: use `LocalModule` for `THIS_MODULE`
rust: miscdevice: set fops.owner from driver module pointer
rust: drm: set fops.owner from driver module pointer
rust: macros: auto-insert OwnerModule in #[vtable]
rust: doctest: add LocalModule fallback for #[vtable] ThisModule
rust: module: add `THIS_MODULE` const to `ModuleMetadata` trait
rust: module: move module types into `module.rs`
rust: num: add Bounded::shr_exact
rust: num: reject Bounded::shr overshifts at build time
rust: num: use const_assert! in Bounded
rust: uapi: replace direct asm-generic/ioctl.h include with linux/ioctl.h
rust: time: add Delta::as_millis_ceil()
rust: time: add jiffies time unit for Delta
...
|
||
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Linus Torvalds
|
3abe3d0223 |
Merge tag 'kbuild-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild/Kconfig updates from Nicolas Schier:
"Kbuild updates:
- Use --force-group-allocation when linking modules
Have the linker resolve the COMDAT groups and place their members
as regular sections instead of possibly leaving multiple copies in
the resulting modules and unnecessary group metadata.
- UAPI header files: Canonicalize __ASSEMBLER__ / __ASSEMBLY__ mixed
use to __ASSEMBLER__
There is an ongoing effort to change __ASSEMBLY__ to __ASSEMBLER__
treewide. For consistency, UAPI headers are normalised to use
__ASSEMBLER__ only. Normalisation is done in two subsequent patches
to simplify a revert in the unexpected case of a regression report.
- link-vmlinux.sh: Improve detection of third pass requirement
- modpost: Canonicalize format of warnings and errors
- Minor changes:
- Remove srctree path from CHECK output
- Set the initial value of subdir-rustflags-y
- Remove broken and unused modules.builtin(.modinfo) targets from
the top-level Makefile
- Add symbol size for kallsyms symbols that can change size
- modpost: Prevent leak when early return no suffix .o in
read_symbols()
- scripts/config: Update usage of POSIX sed
- 'make tags': Add support for rust source files and prevent
binary files from being analysed
- Several spelling mistakes and rephrasing
Kconfig updates:
- Add Julian Braha as Kconfig reviewer
- Fix submenu rendering of negative dependencies
- Minor changes:
- merge_config.sh: Keep temp file in the output dir
- Abort rather than loop for ever on EOF"
* tag 'kbuild-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (23 commits)
modpost: use mod_warn() and mod_error(), clean up logging
modpost: add module as parameter to modpost_log()
kconfig: fix submenu rendering of negative dependencies
kbuild: link-vmlinux.sh: improve detection of third pass requirement
kallsyms: add symbol size for kallsyms symbols that can change size
kbuild: fix modules.builtin(.modinfo) targets in the top-level Makefile
kbuild: set the initial value of subdir-rustflags-y
scripts/config: Use in-place editing (-i) in sed portably
scripts/config: Use POSIX standard ERE (-E) in sed
modpost: prevent leak when early return no suffix .o in read_symbols()
usr: Correct a spelling by changing a letter
fixdep: make gendered language gender-neutral
kconfig: fix minor typos in comments
scripts: fix spelling mistakes
kconfig: abort rather than loop for ever on EOF
scripts/tags.sh: Add support for rust source files
scripts/tags.sh: Prevent binary files appearing in cscope.files
MAINTAINERS: add Julian Braha as Kconfig reviewer
scripts: headers_install.sh: Normalize __ASSEMBLY__ to __ASSEMBLER__
scripts: headers_install.sh: Normalize __ASSEMBLER__ to __ASSEMBLY__
...
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||
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Linus Torvalds
|
fc8c78bce3 |
Merge tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library test updates from Eric Biggers: - Add comprehensive KUnit test suites for the new AES-GCM and AES-CCM library APIs - Add FIPS self-tests for all the AES encryption modes. This is needed for parity with the traditional crypto API - Fix a couple more issues in the IRQ test helper * tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crypto: aes-cmac: Use __cleanup() instead of memzero_explicit() kunit: irq: Unregister on-stack timer and work from debugobjects kunit: irq: Continue increasing hrtimer interval for longer lib/crypto: tests: Add KUnit test suite for AES-GCM lib/crypto: tests: Add KUnit test suite for AES-CCM lib/crypto: tests: Add aead-test-template.h lib/crypto: tests: Use per-test-case buffers in hash tests lib/crypto: tests: Create test-utils.h lib/crypto: aes: Add FIPS self-tests for GCM and CCM lib/crypto: aes: Add FIPS self-tests for unauthenticated modes lib/crypto: fips: Split fips.h into fips-aes.h and fips-sha.h |
||
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Linus Torvalds
|
cd051cfe1e |
Merge tag 'vfs-7.3-rc1.failfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull failfs filesystem from Christian Brauner: "Add failfs and expose a FD_FAILFS_ROOT sentinel. This allows userspace to shed their filesystem state completely. A process with its root or working directory in failfs must anchor every path lookup at an explicit file descriptor. Absolute paths, absolute symlinks and AT_FDCWD-relative lookups simply fail. Failfs is the counterpart to nullfs. nullfs says adds a permanently empty, immutable directory whose lookups fail with ENOENT but which can be opened, read, stat'd and mounted upon. Failfs on the other hand fails every operation. The root cannot be opened at all. A single instance is mounted during early boot via kern_mount(), which makes it logically distinct from every mount namespace. This is accompanied by a new fchroot() system call which makes chrooting via a file descriptor a first class concept. It's possible to chroot into failfs as an unprivileged user provided the task has no new privileges set" * tag 'vfs-7.3-rc1.failfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: Documentation: add failfs documentation selftests/filesystems: add failfs selftests arch: hookup fchroot() system call fs: support FD_FAILFS_ROOT in fchroot() fs: add fchroot() fs: support FD_FAILFS_ROOT in fchdir() fs: add failfs |
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 Jani Nikula
|
d900723d78 |
modpost: use mod_warn() and mod_error(), clean up logging
Convert all module name logging to use the mod_warn() and mod_error() helpers, and pass the module to modpost_log() where used directly, to always have the module name prefixed in the log message, with .ko suffix for modules. Pass struct module *mod around in a few places instead of just mod->name. Further unify the logging while at it. Use single quotes instead of double quotes for symbols, sections, and namespaces. Explicitly state it's a "symbol" when referencing symbols. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patch.msgid.link/17ed1bce5d54fb32533ba83bc83c429cb71adcb0.1786120005.git.jani.nikula@intel.com Reviewed-by: Nicolas Schier <nsc@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Nicolas Schier <nsc@kernel.org> |
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 Krzysztof Kozlowski
|
d863ae623a |
dtc: dt-check-style: Simplify setting depth of DtsLine
When creating new DtsLine object, pass expected indentation depth as constructor, instead of assigning it immediately after, so the code will be easier to read and explicit (depth is not supposed to change during DtsLine lifetime). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260803-n-dts-style-checker-continued-v3-2-6c9776928cea@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
||
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Krzysztof Kozlowski
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2d51fa6004 |
dtc: dt-check-style: Add missing /dts-v1/ to few test cases
The selftest DTS should still look like a real DTS, so it needs '/dts-v1/' marking. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260803-n-dts-style-checker-continued-v3-1-6c9776928cea@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
||
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Jani Nikula
|
a765d3c6cd |
modpost: add module as parameter to modpost_log()
modpost has a lot of error logging with module name, but the module name is logged in a plethora of ways. Add struct module * parameter to modpost_log(), and wrappers mod_warn() and mod_error(), to allow logging with a unified module name, if provided. If the module is provided, the messages will be of the format: (ERROR|WARNING): modpost: (modname.ko|vmlinux): message Actual conversion is done separately. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patch.msgid.link/f27bd8810f0ef12fb86068f0190e4e0afa81e0fa.1786120005.git.jani.nikula@intel.com Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Signed-off-by: Nicolas Schier <nsc@kernel.org> |
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 Julian Braha
|
35e4b60792 |
kconfig: fix submenu rendering of negative dependencies
The Kconfig frontend should render options that depend on a previous option in the submenu of that previous option. But currently, this breaks for negative dependencies. For example, option FOO may be rendered in the submenu of option BAR, despite FOO actually depending on !BAR. Let's fix this ironic rendering by modifying Kconfig to explicitly check negative dependencies. I've only tested locally on x86, but as far as I can tell, this only changes how 2 options are rendered in the menu: 1. NTFS3_FS, no longer in the NTFS_FS submenu, and 2. MTD_BLOCK_RO, no longer in the MTD_BLOCK submenu. Tested-by: Nathan Chancellor <nathan@kernel.org> Reported-by: Xi Ruoyao <xry111@xry111.site> Closes: https://lore.kernel.org/all/cbe95c15d2760f6fce8eaf207c969ce8fd3703aa.camel@xry111.site/ Assisted-by: Claude:claude-4.8-opus Signed-off-by: Julian Braha <julianbraha@gmail.com> Link: https://patch.msgid.link/20260801145238.2140291-1-julianbraha@gmail.com Reviewed-by: Nicolas Schier <nsc@kernel.org> Tested-by: Nicolas Schier <nsc@kernel.org> Signed-off-by: Nicolas Schier <nsc@kernel.org> |
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 Dmitry Torokhov
|
225c308128 |
HID: add documentation and Coccinelle script for FF registration race
HID drivers that rely on the HID core to register input devices must ensure that all private data and capabilities (like force-feedback) are fully initialized before registration. When hid_hw_start() is called with HID_CONNECT_HIDINPUT, the input device is registered immediately. This is racy if the driver attempts to augment the input device in probe() after starting the hardware. The correct way to handle this is to use the .input_configured() callback. Add documentation and a Coccinelle script to detect and prevent this anti-pattern. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.com> |
||
 Paul Walmsley
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5779e0f30f |
checkpatch: add NOKPROBE_SYMBOL to the whitelist of lines that can occur immediately after functions
It's customary for NOKPROBE_SYMBOL() macro usage to appear immediately after a function's final closing brace, but checkpatch doesn't know that yet. As a result, checkpatch --strict incorrectly flags this common kernel pattern, e.g., CHECK: Please use a blank line after function/struct/union/enum declarations 33: FILE: arch/riscv/kernel/traps.c:273: } +NOKPROBE_SYMBOL(probe_single_step_handler); Fix by adding NOKPROBE_SYMBOL to the whitelist of patterns that are cleared to appear immediately after functions. Link: https://lore.kernel.org/130be7db-6098-86a4-60fe-0c1a5d9e30ba@kernel.org Signed-off-by: Paul Walmsley <pjw@kernel.org> Acked-by: Joe Perches <joe@perches.com> Cc: Nam Cao <namcao@linutronix.de> Cc: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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 Alvin Sun
|
7d3e99e933 |
rust: macros: auto-insert OwnerModule in #[vtable]
Auto-add `type OwnerModule: ::kernel::ModuleMetadata;` as a required associated type on the trait side if not already defined, and auto-insert `type OwnerModule = crate::LocalModule;` on the impl side if not explicitly provided, eliminating the need to manually declare and implement `OwnerModule` in every vtable trait and impl. Assisted-by: opencode:glm-5.2 Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Suggested-by: Gary Guo <gary@garyguo.net> Link: https://lore.kernel.org/all/DIMMWHUOLPSH.13JFRHDKDQJGO@garyguo.net Reviewed-by: Gary Guo <gary@garyguo.net> Acked-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alvin Sun <alvin.sun@linux.dev> Link: https://patch.msgid.link/20260811-fix-fops-owner-v10-4-7e71776f9dbe@linux.dev [ Fixed `rusttest` by adding a dummy `LocalModule`. Removed interim `#[allow(dead_code)]`. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
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Alvin Sun
|
98f256e272 |
rust: doctest: add LocalModule fallback for #[vtable] ThisModule
Add a `LocalModule` struct with a null-pointer `ModuleMetadata` impl in the doctest harness, so that `crate::LocalModule` (auto-inserted by `#[vtable]`) resolves correctly when there is no `module!` macro. Assisted-by: opencode:glm-5.2 Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Gary Guo <gary@garyguo.net> Acked-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alvin Sun <alvin.sun@linux.dev> Link: https://patch.msgid.link/20260811-fix-fops-owner-v10-3-7e71776f9dbe@linux.dev [ Fixed `clippy::undocumented_unsafe_blocks` lint by wrapping with a block. Added interim `#[allow(dead_code)]`. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
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Alvin Sun
|
409d09194c |
rust: doctest: use vertical import style
Convert `use` imports to vertical layout for better readability and maintainability. Signed-off-by: Alvin Sun <alvin.sun@linux.dev> Acked-by: David Gow <david@davidgow.net> Link: https://patch.msgid.link/20260521-miscdev-use-format-v3-7-56240ca70d0c@linux.dev Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
 Eric Biggers
|
b09bd2d92e |
lib/crypto: tests: Add KUnit test suite for AES-GCM
Add a KUnit test suite for the AES-GCM library API. It consists of: - All the shared test cases from aead-test-template.h. These include extensive consistency tests, a "Monte-Carlo test", and a benchmark. - Tests against hardcoded AES-GCM test vectors from external sources. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260802233005.161467-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
2aeef50eca |
lib/crypto: tests: Add KUnit test suite for AES-CCM
Add a KUnit test suite for the AES-CCM library API. It consists of: - All the shared test cases from aead-test-template.h. These include extensive consistency tests, a "Monte-Carlo test", and a benchmark. - Tests against hardcoded AES-CCM test vectors from external sources. - Tests for CCM-specific message length validation. To generate the expected aes_ccm_monte_carlo_checksum[] value, add a script gen-aead-testvecs.py which computes it using python-cryptography. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260802233005.161467-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
fbdb43c000 |
lib/crypto: aes: Add FIPS self-tests for GCM and CCM
Upcoming changes will wire up architecture-optimized implementations of GCM and CCM. FIPS labs can consider such designs to meet the threshold for separate self-tests to be needed. Therefore, add FIPS self-tests for encryption and decryption in these modes. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260802222408.91757-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
e967fa98f7 |
lib/crypto: aes: Add FIPS self-tests for unauthenticated modes
Upcoming changes will wire up architecture-optimized implementations of ECB, CBC, CBC-CTS, CTR, and XTS. FIPS labs can consider such designs to meet the threshold for separate self-tests to be needed. The inverse direction of the block cipher also needs to be exercised, which the existing CMAC self-test doesn't do. Therefore, add FIPS self-tests for encryption and decryption in these modes as well as the "bare" AES. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260802222408.91757-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
60e9a0f5be |
lib/crypto: fips: Split fips.h into fips-aes.h and fips-sha.h
In preparation for adding FIPS self-tests for AES encryption modes, split fips.h into separate files for the AES and SHA test vectors. They are still generated by the same script, but this keeps things a bit more organized. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260802222408.91757-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
 Thomas Weißschuh
|
2d69b891e6 |
kbuild: Support generated asm-headers in subdirectories
Extend the asm-header stub generation to also handle subdirectories. An upcoming vdso/ header refactoring requires this. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/20260724-vdso-arch-clockmodes-v4-1-ddbe447be860@linutronix.de |
||
 Daniel Borkmann
|
e1d9b82db5 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.2-rc7
Cross-merge BPF and other fixes after downstream PR. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> |
||
 Ihor Solodrai
|
6923931049 |
resolve_btfids: Emit bpf_kfunc and bpf_fastcall decl tags
Emit the bpf_kfunc decl tag for every discovered kfunc, and bpf_fastcall for kfuncs flagged KF_FASTCALL. These were previously produced by pahole under --btf_features=decl_tag_kfuncs. resolve_btfids now discovers kfuncs from the BTF ID sets [1] and becomes the source of truth for their annotations. Drop decl_tag_kfuncs pahole feature flag from scripts/Makefile.btf [1] https://lore.kernel.org/all/20260722233518.778854-1-ihor.solodrai@linux.dev/ Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20260807032029.78092-5-ihor.solodrai@linux.dev Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> |
||
|
Ihor Solodrai
|
27a78c2e7e |
resolve_btfids: Process KF_ARENA_* flags in resolve_btfids
For kfuncs flagged with KF_ARENA_RET, KF_ARENA_ARG1 or KF_ARENA_ARG2, the address_space(1) attribute (a type tag with kflag=1) must be emitted for the corresponding type in BTF. This was previously done by pahole via the "attributes" BTF feature [1]. Implement the emission of the arena attributes in resolve_btfids: for flagged kfuncs create a new function prototype with updated BTF types. The original proto may be shared with sibling FUNCs, so it is not modified in place. Emission is unconditional: kbuild controls the pahole flags, so the input BTF is expected to not have these attributes. Invalid declarations are reported as errors. Drop the "attributes" pahole feature from scripts/Makefile.btf resolve_btfids now emits them for all supported pahole versions. [1] https://lore.kernel.org/dwarves/20250228194654.1022535-1-ihor.solodrai@linux.dev/ Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://patch.msgid.link/20260807032029.78092-3-ihor.solodrai@linux.dev Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> |
||
 Petr Pavlu
|
a347812c2e |
module: Remove unused DISCARD_EH_FRAME definition from module.lds.S
The linker script scripts/module.lds.S contains an unused DISCARD_EH_FRAME definition introduced by commit |
||
 Jeff Layton
|
2a8d68338e |
checkpatch.pl: adapt to new Assisted-by: format
There is a new format for the 'Assisted-by:' tag. Change checkpatch.pl to just check that it has a value rather than testing for a specific format. Assisted-by: LLM Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20260804-checkpatch-v1-1-27f29c79a46f@kernel.org> |
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 André Draszik
|
14b8b4bf2d |
kbuild: link-vmlinux.sh: improve detection of third pass requirement
It can happen that symbol sizes within .tmp_vmlinux1.kallsyms.o and
.tmp_vmlinux2.kallsyms.o differ, without affecting file size on disk
because of section alignment and/or padding emitted by the assembler.
link-vmlinux.sh doesn't detect this case currently and keeps using
.tmp_vmlinux2.kallsyms.o to link the final vmlinux. Due to the
different symbol sizes, other symbols are shifted within the final
image compared to .tmp_vmlinux2, and the final comparison of System.map
against "${kallsyms_sysmap}" fails with the message:
Inconsistent kallsyms data
Try "make KALLSYMS_EXTRA_PASS=1" as a workaround
This can happen in particular if the linker emits additional symbols
that might have different names between our (re-)linking steps, e.g.
because those names depend on the virtual address of the symbol. Linker
stubs for ARM errata work-arounds are one such case.
These changed symbol names can cause the output of the token
compression of kallsyms.c to change due to the changed symbol substring
count, which in turn can change the size of the kallsyms_names symbol
itself, causing the potential shift of subsequent symbol addresses in
.tmp_vmlinux2.kallsyms.o and therefore the final image.
Update link-vmlinux.sh to not rely on file size of
.tmp_vmlinux?.kallsyms.o alone but to also consider symbol offsets
within to resolve this, and do a third pass if required.
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Signed-off-by: Nicolas Schier <nsc@kernel.org>
|
||
|
André Draszik
|
d6bf11a7e8 |
kallsyms: add symbol size for kallsyms symbols that can change size
Add symbol size for kallsyms symbols that can change size so that sizes can be determined easily without having to manually calculate them when inspecting the object files (.tmp_vmlinux?.kallsyms.o or .tmp_vmlinux?). Without, the assembler records the symbol size as 0. This is primarily useful as a debugging aid in case of linker errors as part of link-vmlinux.sh, and because symbol size doesn't have to align with the offset to the next symbol due to padding/alignment. Signed-off-by: André Draszik <andre.draszik@linaro.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Signed-off-by: Nicolas Schier <nsc@kernel.org> |
||
 Yuntao Wang
|
f78f3c4c2b |
kbuild: set the initial value of subdir-rustflags-y
Initialize subdir-rustflags-y to an empty value to prevent it from being inadvertently affected by an environment variable of the same name. Signed-off-by: Yuntao Wang <yuntao.wang@linux.dev> Link: https://patch.msgid.link/20260718040146.294700-1-yuntao.wang@linux.dev Signed-off-by: Nicolas Schier <nsc@kernel.org> |
||
 Rong Zhang
|
a75c339a69 |
scripts/config: Use in-place editing (-i) in sed portably
The use of in-place editing was removed by commit
|
||
|
Rong Zhang
|
dc4ab230d6 |
scripts/config: Use POSIX standard ERE (-E) in sed
The use of Extended Regular Expressions was removed by commit
|
||
 Robertus Diawan Chris
|
9a5b76027e |
modpost: prevent leak when early return no suffix .o in read_symbols()
The allocation for elf info symsearch and hdr from parse_elf() haven't
been released when return because of modname didn't have suffix ".o".
And it seems like the suffix ".o" check did not depends on parse_elf()
to succeed first. So, move the suffix ".o" check before checking
parse_elf() result to prevent resource leak when the modname didn't have
suffix ".o" and return early.
This is reported by Coverity Scan as "Resource leak".
Fixes:
|
||
 Elsie Heck
|
325ac6f500 |
fixdep: make gendered language gender-neutral
Fix awkward phrasing and change instances of gendered language to gender-neutral in code comments to improve consistency and clarity. Signed-off-by: Elsie Heck <its@elc.moe> Link: https://patch.msgid.link/20260717195939.25130-1-its@elc.moe Signed-off-by: Nicolas Schier <nsc@kernel.org> |
||
|
Julian Braha
|
1f1b5149cf |
kconfig: fix minor typos in comments
Some typos I noticed: 1. expressoin -> expression 2. A property represent -> A property represents Signed-off-by: Julian Braha <julianbraha@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20260719210536.9577-1-julianbraha@gmail.com Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Nicolas Schier <nsc@kernel.org> |
||
 Martin Weiss
|
5a0eefdd32 |
scripts: fix spelling mistakes
Fix two minor typographical issues in two scripts under scripts/. Signed-off-by: Martin Weiss <Martin.weiss2410@gmail.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20260629082812.551273-1-Martin.weiss2410@gmail.com [nsc: Added minimal commit description] Signed-off-by: Nicolas Schier <nsc@kernel.org> |
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 Simon Glass
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f915149f5c |
kconfig: abort rather than loop for ever on EOF
When a non-interactive 'make oldconfig' or 'syncconfig' meets a new int
or hex symbol whose default cannot be applied, conf_string() reads a
value from stdin. At end of file fgets() returns NULL, no value is set
and the loop asks again. The result is an endless loop which fills the
output until it exhausts memory, rather than a clean failure.
Detect this in conf_string(): if the value cannot be set and stdin is at
end of file, stop with an error that names the symbol.
Note that a symbol with no default doesn't trigger this, since
sym_calc_value() falls back to 0, which is accepted at end of file. The
loop is triggered by a broken Kconfig file, with a default whose text
fails sym_string_valid().
Such mistakes do creep in from time to time and are hard to debug, since
the build fills the log with repeated prompts instead of pointing at the
offending symbol. Some bad defaults draw a parse-time warning, but
menu_validate_number() accepts a reference to any int or hex symbol, so
a cross-type reference loops with no warning at all. For example, "0xff"
is not a valid int value:
config HEXSYM
hex
default 0xff
config VAL
int "Value"
default HEXSYM
Interactive use is unaffected, since feof() only becomes true once a
read actually hits end of file: an invalid answer at a terminal still
re-prompts, while Ctrl-D at such a prompt exits with the error instead
of looping. bool and tristate symbols and choices already accept the
default on an empty line, so they still take their defaults in a
non-interactive build.
Tested with int and hex symbols carrying such defaults: with empty
stdin, the code without this change produces around 190MB of repeated
prompts within two seconds, while with the change it exits 1 naming the
symbol. Piped and interactive (pty) sessions still re-prompt on an
invalid answer and then accept a valid one. A new string symbol with no
default still takes the empty string at end of file, since any text is
valid for a string.
Signed-off-by: Simon Glass <sjg@chromium.org>
Link: https://patch.msgid.link/20260714133545.3294648-1-sjg@chromium.org
Signed-off-by: Nicolas Schier <nsc@kernel.org>
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 Sergei Litvin
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2ca47eed70 |
scripts/tags.sh: Add support for rust source files
When executing the command `make cscope`, the `cscope.files` file generated by it includes only filenames with the extensions *.h, *.c, *.S and not includes filenames with *.rs extensions. To fix this, modify the functions `find_arch_sources()`, `find_arch_include_sources()`, `find_include_sources()`, and `find_other_sources()` so that they can accept an unlimited number of filename patterns as parameters for the search. Add the `setup_name_pattern()` function to convert these filename pattern parameters into a list of parameters that can be passed to the `find` utility via the new `pattern` variable. Signed-off-by: Sergei Litvin <litvindev@gmail.com> Acked-by: Miguel Ojeda <ojeda@kernel.org> Tested-by: Nicolas Schier <n.schier@fritz.com> Reviewed-by: Nicolas Schier <n.schier@fritz.com> Link: https://patch.msgid.link/20260714125259.78824-1-litvindev@gmail.com [nsc: cleaned-up commit message line breaks and removed cc trailers] Signed-off-by: Nicolas Schier <nsc@kernel.org> |
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Sergei Litvin
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a9b93c3462 |
scripts/tags.sh: Prevent binary files appearing in cscope.files
When executing the command `make COMPILED_SOURCE=1 cscope`, the resulting `cscope.files` file contains filenames with the extensions *.rlib, *.rmeta, and *.so. To fix this, modify the regular expression in the `all_compiled_sources()` function so that only files with the extensions *.h, *.c, *.S, and *.rs are accepted. The issue has been introduced by commit |
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 Thomas Huth
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600f5de277 |
scripts: headers_install.sh: Normalize __ASSEMBLY__ to __ASSEMBLER__
A previous patch to headers_install.sh normalized the usage of __ASSEMBLER__ to __ASSEMBLY__ in the UAPI headers due to two reasons: 1) There was the concern that the UAPI headers might be used with non-GCC-compatible compilers, which do not define __ASSEMBLER__ automatically. But other C compilers like PCC (see https://github.com/IanHarvey/pcc/blob/cvs2git/2018.09.20/cc/cc/cc.1#L405) and Tiny-C (see https://repo.or.cz/tinycc.git/commitdiff/a25325e9be13e52a), are defining __ASSEMBLER__ for compiling assembler files, too, so using it in UAPI header files should really be fine. 2) During the migration phase, the UAPI headers will use a mix of *both* __ASSEMBLY__ and __ASSEMBLER__ at the same time, which is ugly and inconsistent. That's true. But since we already shipped a couple of kernel versions that used __ASSEMBLER__ in the UAPI headers for certain architectures, we might now break user space programs that have been developed with these kernel versions if we switch back to __ASSEMBLY__. Thus let's better always use the macro that is defined by the compilers and standardize on __ASSEMBLER__ instead of __ASSEMBLY__ in all of the UAPI header files now. Suggested-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/all/2030a963-33bc-43fe-9a2b-9c626d7d8360@redhat.com/ Reviewed-by: Nicolas Schier <n.schier@fritz.com> Tested-by: Nicolas Schier <n.schier@fritz.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Link: https://patch.msgid.link/20260722072928.24500-1-thuth@redhat.com Signed-off-by: Nicolas Schier <nsc@kernel.org> |