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| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
f96718fc1f |
MMC core:
- Reject invalid perdev_minors for the block device before division - Document DT fixed-layout NVMEM provider support for eMMC cards MMC host: - Convert a couple of plain text DT bindings to the yaml format - bcm2835: DMA mapping improvements - cqhci: Fix sparse warnings for endian conversions - dw_mmc: Stop and complete DMA also in busy state - dw_mmc-rockchip: Add support for the RV1106 variant - litex_mmc: Add dynamic bus width support - moxart: Propagate error for DMA completion timeout - pxamci: Remove PXA remnants for the PXA93x support - rtsx_usb_sdmmc: Avoid USB I/O in runtime autosuspend - rtsx_usb_sdmmc: Suppress false CD after init timeout - sdhci_am654: Add Judith Mendez as maintainer - sdhci-esdhc-mcf: Do not use readl()/writel() on ColdFire - sdhci-msm: Extend the DT bindings for ICE - sdhci-tegra: Add support for Tegra264/Tegra238 variants - sunxi: Add support for the Allwinner A733 variant - via-sdmmc: Clean up card detect work at remove and in probe error path -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEugLDXPmKSktSkQsV/iaEJXNYjCkFAmqIRy0QHHVsZmhAa2Vy bmVsLm9yZwAKCRD+JoQlc1iMKVRSD/9d0JSLTRbCQ/XkNvRXfmVXCFJ8XLZCMu1M YCuJfO1+O1R+P3XVjMCIclqNwYzrETp1f96YRJ7AF0lkkPa890Cuq8p2ZGhElT6M o1mes+qaK6T2hg4Yw2H7auKZdlN7Xl3ez4cxrYq17n2RUcrzzdUbmGR87eym3el7 E07INRzGDFZ2n8/JS13yf1BRCvkP1bRnrHCOHAll8d7xvscCaZFUdz2TpfGjrmDV 7SsnN4Yns/2y9Xq5MOmc5kh8hglNclIpA3D7MGsKkfj6JMxmOR5iUytgMxnXZQYz YUEopIJ2nbEGv4umhTHnIEQBB1UNWO+akz5KnCEY+juKS/MhQ7VpBleGfS5WPCNr 954VcUXvjIN+5QIgK1ZlhWyL9056+MEApYSkqSoAfYtDX05LkFbD5Xmir8G/RtpK FJ9K/ps6YOMliGwCls5zfv1HO1jhjDiaToJxSSwXIfJN6uUNP9+64BVtI6no3XvU nQIDFF1rDbCwZTaHRvvbKhogR1Rja/bMUXnDzxH/8Pvk5jAteDmbMpR7q6CZdn6J OZ85gMm1XxTfbfmVk0rW027jUn7s4D7TX3G1W9CsZKB1QZd4FRnZ4snnoYOYNHWO aRBHIUkio+20BEqXjHz5A9+LSw627/PoZIiQUQsl7JTrMvaYIB1AUDWdoJ0wc9vU TLxdIpM/GQ== =RjJ2 -----END PGP SIGNATURE----- Merge tag 'mmc-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC updates from Ulf Hansson: "MMC core: - Reject invalid perdev_minors for the block device before division - Document DT fixed-layout NVMEM provider support for eMMC cards MMC host: - Convert a couple of plain text DT bindings to the yaml format - bcm2835: DMA mapping improvements - cqhci: Fix sparse warnings for endian conversions - dw_mmc: Stop and complete DMA also in busy state - dw_mmc-rockchip: Add support for the RV1106 variant - litex_mmc: Add dynamic bus width support - moxart: Propagate error for DMA completion timeout - pxamci: Remove PXA remnants for the PXA93x support - rtsx_usb_sdmmc: Avoid USB I/O in runtime autosuspend - rtsx_usb_sdmmc: Suppress false CD after init timeout - sdhci_am654: Add Judith Mendez as maintainer - sdhci-esdhc-mcf: Do not use readl()/writel() on ColdFire - sdhci-msm: Extend the DT bindings for ICE - sdhci-tegra: Add support for Tegra264/Tegra238 variants - sunxi: Add support for the Allwinner A733 variant - via-sdmmc: Clean up card detect work at remove and in probe error path" * tag 'mmc-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (35 commits) ARM: PXA: Fix build error for PXA93x dt-bindings: mmc: sunxi: add compatible string for Allwinner A733 MMC0/1/2 dt-bindings: mmc: Document fixed-layout NVMEM provider support mmc: sdhci-tegra: Add Tegra264 SoC data dt-bindings: mmc: tegra: Document Tegra264 SDHCI mmc: sdhci-tegra: Add Tegra238 SoC data dt-bindings: mmc: tegra: Document Tegra238 SDHCI mmc: omap_hsmmc: use platform_get_irq_optional for wake IRQ mmc: via-sdmmc: cancel card-detect work on remove mmc: via-sdmmc: stop card-detect handling on probe failure mmc: moxart: use platform helpers for resource and IRQ mmc: host: Remove redundant dev_err()/dev_err_probe() mmc: bcm2835: DMA mapping improvements mmc: dw_mmc: move declaration of dw_mci_pmops dt-bindings: mmc: rockchip-dw-mshc: Add RV1106 compatible mmc: rtsx_usb_sdmmc: suppress false CD after init timeout misc: rtsx_usb: avoid USB I/O in runtime autosuspend mmc: sdhci-of-dwcmshc: Log eMMC reset calls mmc: block: reject invalid perdev_minors before division mmc: sdhci-of-ma35d1: add missing MODULE_DEVICE_TABLE() ... |
||
|
Linus Torvalds
|
ed3b875bea |
mm.git review status for mm-hotfixes-stable..mm-stable
Everything:
Total patches: 501
Reviews/patch: 1.66
Reviewed rate: 70%
Excluding DAMON:
Total patches: 356
Reviews/patch: 2.26
Reviewed rate: 90%
Excluding DAMON and selftests:
Total patches: 329
Reviews/patch: 2.31
Reviewed rate: 92%
Excluding DAMON, selftests and maple_tree:
Total patches: 328
Reviews/patch: 2.31
Reviewed rate: 92%
Summary of patch series in this merge:
- The 2 patch series "mm: drop "sub" prefix from various places" from
Dev Jain implements some page->folio conversion and a naming cleanup.
- The 2 patch series "mm/kasan: remove redundant initialization for
kasan_flag_write_only" from Igor Putko provides some KASAN cleanup work.
- The 2 patch series "mm/filemap: reduce unnecessary xarray lookups"
from Chi Zhiling provides a small speedup in the pagecaache read code.
- The 4 patch series "mm/percpu: Fix possible NOFS/NOIO reclaim
recursion" from Kaitao Cheng improves a few things in the vmalloc code -
mainly the avoidance of GFP_KERNEL allocations when the caller asked for
GFP_NOFS or GFP_NOIO.
- The 3 patch series "mm/kmemleak: avoid soft lockup when scanning task
stacks" from Breno Leitao avoids a soft lockup watchdog trigger from the
kmemleak scanning code in extreme situations.
- The 6 patch series "mm/page_owner: misc cleanups" from Ye Liu is a
collection of unrelated cleanups to the page_owner code. For some
reason lots of people have been working on the page_owner code this
cycle.
- The 4 patch series "mm: convert to walk_page_range_vma() to eliminate
find_vma()" from Kefeng Wang simplifies and accelerates the page walking
library function.
- The 3 patch series "mm/migrate: preparatory cleanups for batch copy
and offload" from Shivank Garg implements cleanups in the migration
code.
- The 4 patch series "mm/page_owner: add per-fd filter infrastructure
for print_mode and NUMA filtering" from Zhen Ni provides per-fd
filtering to page_owner in order to reduce the sometimes vast amount of
output it can produce.
- The 19 patch series "mm: Refactor bootmem gigantic hugepage
allocation" from Muchun Song is a "set of fixes and preparatory cleanups
around bootmem HugeTLB handling, sparse initialization ordering, and
related vmemmap setup".
- The 4 patch series "mm/zsmalloc: reduce lock contention in zs_free()"
from Wenchao Hao reduces 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.
- The 2 patch series "move alloc_tag.c file under mm/" from Suren
Baghdasaryan does that.
- The 6 patch series "samples/damon: handle damon_{start,stop}()
failures" from SJ Park fixes 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.
- The 11 patch series "mm/damon/sysfs: kobject_del() directories that
users can create/remove" from SJ Park resolves an issue where delayed
sysfs directory removal under CONFIG_DEBUG_KOBJECT_RELEASE causes
creation failures due to duplicate directory names by adding missing
kobject_del() calls before creating new directories.
- The 3 patch series "mm: cleanup clear_not_present_full_ptes()" from
David Hildenbrand cleans up the core pte handling code.
- The 3 patch series "selftests/damon: misc fixes for test bugs" from
Kunwu Chan fixes several bugs in the DAMON selftests.
- The 2 patch series "selftests/damon: fix memcg_path staging handling"
from Cheng Nie fixes a bug in _damon_sysfs.py for damos_filter
memcg_path setup, and adds a test case for it in sysfs.py.
- The 2 patch series "selftests/damon: test kdamond refresh_ms" from
Ruslan Valiyev introduces 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.
- The 5 patch series "mm/damon: five misc fixups" from Akinobu Mita
contains miscellaneous DAMON fixups.
- The 2 patch series "mm/damon/core: detect internal variation above
max_nr_regions/2" from Jiayuan Chen fixes 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 adds corresponding
KUnit test coverage.
- The 6 patch series "mm: preparatory patches for PMD level swap
entries" from Usama Arif refactors and cleans 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.
- The 11 patch series "mm/damon: update, optimize, and clean up doc,
tests, and code" from SJ Park updates DAMON design and ABI
documentation, expands unit and selftest coverage, optimizes
damon_commit_target_regions(), and cleans up recently added sysfs
interface code for better readability.
- The 2 patch series "mm/vmpressure: reduce CPU, memory and code
overhead on cgroup v2" from Usama Arif optimizes vmpressure() by
skipping unnecessary work on cgroup v2 for userspace event notifications
and refactors v1-only eventfd handling into mm/memcontrol-v1.c to reduce
memory overhead and code complexity.
- The 10 patch series "selftests/mm: refactor pkey helpers and fix mmap
error handling" from Hongfu Li refactors pkeys shared tracing and
assertion helpers into a common file, unifies protection key selftests
to use consistent diagnostic logging and assertions, and enforces
standardized MAP_FAILED return checks for mmap() calls across the tests.
- The 18 patch series "mm/damon: optimize out nr_accesses_bp" from SJ
Park replaces the error-prone, continuously updated nr_accesses_bp field
in damon_region with an on-demand moving sum function
(damon_nr_accesses_mvsum()), reducing structure memory overhead and
avoiding state corruption bugs.
- The 6 patch series "Open HugeTLB allocation routine for more generic
use" from Ackerley Tng decouples 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.
- The 3 patch series "mm/damon: provide pseudo moving sum probe_hits"
from SJ Park integrates DAMON's probe_hits attribute counter into the
pseudo moving sum infrastructure, enabling real-time, online monitoring
without waiting for full aggregation intervals.
- The 18 patch series "mm: Some cleanups for page allocator APIs" from
Brendan Jackman simplifies and refactors the page allocator entry points
and flags by unifying allocation paths, adding internal alloc_flags
arguments, and eliminating redundant __ prefixed alloc_pages variants.
- The 5 patch series "Fix incorrect access of hugetlb pte entries" from
Dev Jain enforces 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.
- The 8 patch series "mm/damon: validate all parameters in the core"
from SJ Park consolidates 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.
- The 3 patch series "tools/mm/page_owner_sort: fix filtering and
cleanup issues" from Yichong Chen renames is_need() to filter_record()
for clearer return semantics, fixes per-record allocation memory leaks
and bounds output copies in search_pattern() to address an existing
buffer issue.
- The 4 patch series "memcg: bail out reclaim when memcg is dying" from
Jiayuan Chen mitigates a system-wide stall which occurs when a cgroup is
removed while one of its memory control files is doing synchronous
reclaim.
- The 5 patch series "mm/memory-failure: add panic option for
unrecoverable pages" from Breno Leitao introduces 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.
- The 11 patch series "mm/damon: refactor damon_{start,stop,commit}()
for simple error handling" from SJ Park refactors 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.
- The 5 patch series "Keep tail page private zero at free and folio
split" from Zi Yan adds 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().
- The 4 patch series "mm: drop redundant lru_add_drain in anon folio
reuse paths" from Barry Song eliminates 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.
- The 3 patch series "mm: clean up folio LRU and swap declarations" from
Jianyue Wu reorganizes 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.
- The 15 patch series "userfaultfd: working set tracking for VM guest
memory" from Kiryl Shutsemau adds 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.
- The 10 patch series "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part
2)" from David Hildenbrand removes the remaining pieces of
CONFIG_HAVE_BOOTMEM_INFO_NODE, performing some smaller cleanups around
freeing of reserved vmemmap pages on the way.
- The 7 patch series "mm/damon: update probe hits for runtime parameter
commits" from SJ Park ensures 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.
- The 3 patch series "KSM: performance optimizations for rmap_walk_ksm"
from xu xin resolves 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.
- The 3 patch series "mm: split a couple of headers from internal.h"
from Mike Rapoport splits declarations related to mm_init, memblock,
vmalloc and sparse into new headers.
- The 2 patch series "KSM: use linear_page_index in collect_procs_ksm()"
from xu xin applies 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.
- The 3 patch series "selftests/mm: avoid false failures in hugetlb and
KSM tests" from Sayali Patil fixes issues in the hugetlb and KSM MM
selftest categories that can report failures when the prerequisites for
the tests are not satisfied.
- The 19 patch series "mm/damon: introduce data attributes only
monitoring" from SJ Park introduces 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.
- The 8 patch series "mm/hmm: Add mmap lock-drop support for
userfaultfd-backed mappings" from Stanislav Kinsburskii extends
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.
- The 33 patch series "mm: make VMA page offset handling more
consistent" from Lorenzo Stoakes cleans up and standardizes 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.
- The 3 patch series "mm: handle device-private PMDs in walk callbacks"
from Usama Arif addresses 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.
- The 5 patch series "mm/rmap: Refactor try_to_unmap_one" from Dev Jain
refactors 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.
- The 4 patch series "Docs/ABI/damon: sysfs ABI document fixes and
additions" from Song Hu fixes typos and fills in missing entries in the
DAMON sysfs ABI document.
- The 10 patch series "dax/kmem: atomic whole-device hotplug via sysfs"
from Gregory Price introduces 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.
- The 13 patch series "mm: convert more vm_flags_t users to vma_flags_t"
from Lorenzo Stoakes continues 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.
- The 2 patch series "Two small patches to clean up mm/mm_slot.h" from
xu xin refactors 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.
- The 10 patch series "mm/damon/core: hide core-private struct fields"
from SJ Park cleans 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.
- The 6 patch series "mm/damon: unurgent fixes for infinite loop, NULL
de-ref and races" from SJ Park addresses 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.
- The 2 patch series "mm/page_alloc: fixes for free_pages_nolock() on
RT/UP" from Brendan Jackman fixes 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.
- The 4 patch series "mm/page_alloc: couple of followups for recent
cleanups" from Brendan Jackman cleans up and updates 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.
- The 3 patch series "mm/mseal: further cleanups" from Lorenzo Stoakes
refactors and simplifies 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.
- The 4 patch series "mm/vmscan: fix swappiness=max and clean up
per-node proactive reclaim" from Ridong Chen resolves reclaim behavior
bugs and cleans 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().
- The 6 patch series "mm: mincore: misc cleanups" from Kefeng Wang
cleans up and simplifies the mincore code. Most importantly, it removes
the historical special behavior that always reports VM_PFNMAP pages as
non-resident.
- The 2 patch series "mm/huge_memory: drop dead split helper variants"
from Kiryl Shutsemau implements two trivial cleanups in the folio split
API.
- The 7 patch series "mm/damon: fix uninitialized DAMOS field and kunit
exec expectation bugs" from SJ Park resolves 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.
- The 3 patch series "cleanup for stable_page_flags()" from Jinjiang Tu
cleans up and refactors 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.
- The 3 patch series "Batch unmap of uffd-wp file folios" from Dev Jain
extends 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.
- The 3 patch series "mm/early_ioremap: clarify and clean up
early_ioremap_reset()" from Sang-Heon Jeon clarifies and cleans 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.
- The 4 patch series "mm: fix reclaim storms in defrag_mode" from
Johannes Weiner addresses 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.
- The 2 patch series "zram: lockmap tweaks" from Sebastian Siewior
optimizes and fixes lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolating lock classes across multiple instances.
It 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.
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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
...
|
||
Alexander Usyskin
|
b0495bb58a |
mei: pull kvfree out of spinlock
The read buffer allocation was changed from kmalloc() to kvmalloc().
This buffer is part of mei_cl_cb structure that can be queued in
rd_complete queue protected by spinlock.
Releasing the structure leads to errors like below when freeing buffer
that allocated non-contiguous:
BUG: sleeping function called from invalid context at mm/vmalloc.c:3448
Separate mei_cl_cb structure dequeue and release to
perform only dequeue under spinlock and push release out of spinlock.
Cc: stable <stable@kernel.org>
Fixes:
|
||
Eddie Lin
|
2fae94ee14 |
misc: fastrpc: fix memory leak in fastrpc_channel_ctx_free
The 'ctx_idr' is initialized but never destroyed when
the channel context is freed, leading to a memory leak.
Add idr_destroy() to properly clean up the IDR resources.
Fixes:
|
||
Anandu Krishnan E
|
310f786839 |
misc: fastrpc: fix channel ctx ref leak when session alloc fails
fastrpc_channel_ctx_get() is called in fastrpc_device_open() before
fastrpc_session_alloc(). If session alloc fails, the error path
returns -EBUSY without calling fastrpc_channel_ctx_put(), leaking
the reference. Fix by adding the missing put.
Fixes:
|
||
Junrui Luo
|
b85a0e91d7 |
misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke
When an invoke is interrupted by a signal,
wait_for_completion_interruptible() returns -ERESTARTSYS and
fastrpc_internal_invoke() moves every buffer from fl->mmaps onto
cctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk
runs without holding fl->lock, the lock that serialises fl->mmaps in
fastrpc_req_mmap() and fastrpc_req_munmap() everywhere else.
Take fl->lock around the move, matching every other fl->mmaps accessor.
Fixes:
|
||
Ekansh Gupta
|
6102ceb4ea |
misc: fastrpc: Remove buffer from list prior to unmap operation
fastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is
getting removed from the list after it is unmapped from DSP. This can
create potential race conditions if multiple threads invoke unmap
concurrently, where one thread may remove the entry from the list while
another thread's unmap operation is still ongoing.
Fix this by removing the buffer entry from the list before calling the
unmap operation. If the unmap fails, the entry is re-added to the list
so that userspace can retry the unmap, or alternatively, the buffer
will be cleaned up during device release when the DSP process is torn
down and all DSP-side mappings are freed along with remaining buffers
in the list.
Fixes:
|
||
|
Ekansh Gupta
|
ab99eaafb0 |
misc: fastrpc: Fix initial memory allocation for Audio PD memory pool
The initial buffer allocated for the Audio PD memory pool is never added
to the pool because pageslen is set to 0. As a result, the buffer is not
registered with Audio PD and is never used, causing a memory leak. Audio
PD immediately falls back to allocating memory from the remote heap since
the pool starts out empty.
Fix this by setting pageslen to 1 so that the initially allocated buffer
is correctly registered and becomes part of the Audio PD memory pool.
Fixes:
|
||
Brendan Jackman
|
579c6de3de |
sgi-xp: use higher-level allocator API
The difference between __alloc_pages_node() and alloc_pages_node() is that the latter allows you to pass NUMA_NO_NODE. The former is going away and the latter works fine here so switch over. No functional change intended. Link: https://lore.kernel.org/20260703-alloc-trylock-v5-11-c87b714e19d3@google.com Signed-off-by: Brendan Jackman <jackmanb@google.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Steve Wahl <steve.wahl@hpe.com> Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Steve Wahl <steve.wahl@hpe.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Assisted-by: Gemini:unknown-model Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Xu Rao
|
3b231f1e99 |
misc: nsm: pin the module while the device is open
misc_open() installs a misc driver's file operations with fops_get(),
which pins file_operations::owner before replacing the file's f_op. The
NSM misc device leaves nsm_dev_fops.owner unset, so opening /dev/nsm does
not take a module reference on the nsm driver.
If the driver is built as a module, an open file descriptor can therefore
survive rmmod of the module that provides its ioctl callbacks. A later
ioctl through that descriptor can call into unloaded module text.
Set nsm_dev_fops.owner to THIS_MODULE so the misc core holds the module
while any /dev/nsm file descriptor is open, matching the lifetime
expectation for the installed file operations.
Fixes:
|
||
|
Alexander Usyskin
|
f112ea910e |
mei: bus: access mei_device under device_lock on cleanup
Fix couple of problems in mei_cl_bus_dev_release():
mei_cl_flush_queues() is running without lock.
bus->file_list access after mei_dev_bus_put(bus) can become a
use-after-free if this was the last reference to bus.
Protect queues cleanup and WARN traversal by device lock there
to avoid the concurrent access problems.
Move WARN traversal before mei_dev_bus_put(bus).
This file uses bus variable name for mei_device, adjust
code of mei_cl_bus_dev_release() to use bus variable too.
Cc: stable <stable@kernel.org>
Fixes:
|
||
Runyu Xiao
|
ce1fed11d1 |
misc: nsm: only unlock nsm_dev on post-lock error paths
nsm_dev_ioctl() jumps to the common out label even when the initial
copy_from_user() fails before nsm->lock has been taken. The error path
then blindly unlocks a mutex that was never acquired.
This issue was found by our static analysis tool and then manually
reviewed against the current tree.
The grounded PoC kept the miscdevice ioctl entry and the pre-lock
copy_from_user(&raw, argp, _IOC_SIZE(cmd)) failure path by issuing
NSM_IOCTL_RAW with an invalid user pointer. That failure reaches the
shared out label before mutex_lock(&nsm->lock). Lockdep reported:
WARNING: bad unlock balance detected!
exploit/193 is trying to release lock (&global_nsm.lock) at:
nsm_dev_ioctl+0x5f/0xcf [vuln_msv]
but there are no more locks to release!
no locks held by exploit/193.
Return immediately on the pre-lock copy_from_user() failure and keep the
common unlock label for the post-lock paths only.
Fixes:
|
||
Sean Rhodes
|
483c948324 |
misc: rtsx_usb: avoid USB I/O in runtime autosuspend
The runtime autosuspend callback currently queries card status and
clears OCP by issuing USB register accesses. This can run from the
USB runtime-PM path itself, which is the wrong place to start more
device I/O.
Keep a cached copy of the card-status bits from normal status reads
instead. During runtime autosuspend, use that cached value only to
preserve the existing Memory Stick autosuspend deferral.
Do not treat raw SD_CD as an autosuspend blocker, because tray-based
SD readers can assert SD_CD with an empty tray. A real SD card is
protected by the SD/MMC child runtime-PM usage once powered.
Also stop clearing OCP from the runtime autosuspend callback, so the
callback does not issue USB commands.
Fixes:
|
||
Uwe Kleine-König (The Capable Hub)
|
995832b2ce |
Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files)
Replace the #include of <linux/mod_devicetable.h> by the more specific <linux/device-id/*.h> where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> |
||
|
Linus Torvalds
|
26ae421f7f |
pci-v7.2-changes
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Merge tag 'pci-v7.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Remove MPS/MRRS Kconfig settings (CONFIG_PCIE_BUS_*) that worked
around a WiFi device defect; use a quirk or boot-time
"pci=pcie_bus_tune_*" kernel parameter instead (Bjorn Helgaas)
- Always lift 2.5GT/s restriction in PCIe failed link retraining to
avoid clamping a link to 2.5GT/s after hot-plug changes the device
(Maciej W. Rozycki)
- Request bus reassignment when not probe-only to fix an enumeration
regression on Marvell CN106XX and possibly other DT-based systems
(Ratheesh Kannoth)
- Fix procfs race between pci_proc_init() and pci_bus_add_device()
that resulted in 'proc_dir_entry ... already registered' warnings
and pointer corruption (Krzysztof Wilczyński)
- Fix sysfs race that causes 'duplicate filename' warnings and boot
panics by converting PCI resource files to static attributes
(Krzysztof Wilczyński)
- Expose sysfs 'resourceN_resize' attributes only on platforms with
PCI mmap (Krzysztof Wilczyński)
- Require CAP_SYS_ADMIN to write to sysfs 'resourceN_resize'
attributes (Krzysztof Wilczyński)
- Add security_locked_down(LOCKDOWN_PCI_ACCESS) to alpha PCI resource
mmap path to match the generic path (Krzysztof Wilczyński)
- Use kstrtobool() to parse the 'rom' attribute input to avoid the
unexpected behavior of enabling the ROM when writing '0' with no
trailing newline (Krzysztof Wilczyński)
Resource management:
- Improve resource claim logging for debuggability (Ilpo Järvinen)
- Clean up several uses of const parameters (Ilpo Järvinen)
- Check option ROM header signatures and lengths before accessing to
avoid page faults and alignment faults (Guixin Liu)
ASPM:
- Don't reconfigure ASPM when entering low-power D-state; only do it
when returning back to D0 (Carlos Bilbao)
Power management:
- During suspend, set power state to 'unknown' for all devices, not
just those with drivers (Lukas Wunner)
- Skip restoring Resizable BARs and VF Resizable BARs if device
doesn't respond to config reads, to avoid invalid array accesses
(Marco Nenciarini)
- Add pci_suspend_retains_context() so drivers can tell whether
devices retain internal state across suspend/resume, since some
platforms reset devices on suspend; use this in nvme to avoid
issues on Qcom RCs (Manivannan Sadhasivam)
Power control:
- Only to power on/off devices that actually support power control to
avoid poking at incompatible devices mentioned in DT (Manivannan
Sadhasivam)
Virtualization and resets:
- Log device readiness timeouts as errors, not warnings, because the
device is likely unusable in this case (Bjorn Helgaas)
- Wait for device readiness after soft reset (D3hot ->
D0uninitialized transition), when the device may respond with
Request Retry Status (RRS) if it needs more time to initialize
(Bjorn Helgaas)
- Drop unnecessary retries when restoring BARs because resets should
now already include all required delays (Lukas Wunner)
- Avoid FLR for MediaTek MT7925 WiFi, where FLR fails after a VM
terminates uncleanly (Jose Ignacio Tornos Martinez)
- Avoid SBR for Qualcomm WCN6855/WCN7850 WiFi, SDX62/SDX65 modems,
which seem not to support it correctly (Jose Ignacio Tornos
Martinez)
Peer-to-peer DMA:
- Prevent P2PDMA as well as CPU access to non-mappable BARs, e.g.,
s390 ISM BARs (Matt Evans)
- Add Intel QAT, DSA, IAA devices to whitelist (Lukas Wunner)
Endpoint framework:
- Add endpoint controller APIs for use by function drivers to
discover auxiliary blocks like DMA engines (Koichiro Den)
- Remember DesignWare eDMA engine base/size and expose them via the
EPC aux-resource API (Koichiro Den)
- Add endpoint embedded doorbell fallback, used if MSI allocation
fails (Koichiro Den)
- Validate BAR index and remove dead BAR read in endpoint doorbell
test (Carlos Bilbao)
- Unwind MSI/MSI-X vectors if NTB initialization fails part-way
through (Koichiro Den)
- Cache sleepable pci_irq_vector() value at ISR setup to avoid
calling it from hardirq context (Koichiro Den)
- Call sleepable pci_epc_raise_irq() from a work item instead of
atomic context, e.g., when setting bits in NTB peer doorbells in
the ntb_peer_db_set() path (Koichiro Den)
- Report 0-based vNTB doorbell vector to account for link event 0 and
historically skipped slot 1 (Koichiro Den)
- Prevent configfs writes to vNTB db_count and other values that are
already in use after EPC attach (Koichiro Den)
- Account for vNTB db_valid reserved slots (link event 0 and
historically skipped slot 1) so they don't appear as valid
doorbells (Koichiro Den)
- Implement vNTB .db_vector_count()/mask() for doorbells so clients
can use multiple vectors and avoid thundering herds (Koichiro Den)
- Report 0-based NTB doorbell vector to account for link event 0 and
historically skipped slot 1 (Koichiro Den)
- Fix doorbell bitmask and IRQ vector handling to clear only
specified bits, use the correct vector for non-contiguous Linux IRQ
numbers, and validate incoming vectors (Koichiro Den)
- Implement NTB .db_vector_count()/mask() for doorbells so clients
can use multiple vectors (Koichiro Den)
Native PCIe controller infrastructure:
- Add pci_host_common_link_train_delay() for the mandatory delay
after > 5GT/s Link training completes and use it for cadence HPA,
j721e, LGA; dwc; aardvark, mediatek-gen3, rzg3s (Hans Zhang)
- Protect root bus removal with rescan lock in altera, brcmstb,
cadence, dwc, iproc, mediatek, plda, rockchip to prevent
use-after-free or crashes when racing with sysfs rescan or hotplug
(Hans Zhang)
- Add pci_host_common_parse_ports() for use by any native driver to
parse Root Port properties (per-Link features like width, speed,
PHY, power and reset control, etc should be described in Root Port
stanzas, not the host bridge; currently only reset GPIOs
implemented) (Sherry Sun)
New native PCIe controller drivers:
- Add DT binding and driver for UltraRISC DP1000 PCIe controller
(Xincheng Zhang, Jia Wang)
Altera PCIe controller driver:
- Do not dispose of the parent IRQ mapping, which belongs to the
parent interrupt controller (Mahesh Vaidya)
- Fix chained IRQ handler ordering issue and resource leaks on probe
failure (Mahesh Vaidya)
AMD MDB PCIe controller driver:
- Assert PERST# on shutdown so any connected Endpoints are held in
reset during shutdown (Sai Krishna Musham)
Amlogic Meson PCIe controller driver:
- Propagate devm_add_action_or_reset() failure to fix probe error
path (Shuvam Pandey)
- Add .remove() callback to deinitialize the host bridge and power
off the PHY (Shuvam Pandey)
Broadcom iProc PCIe controller driver:
- Restore .map_irq() assignment; its removal broke INTx on the iproc
platform bus driver (Mark Tomlinson)
Broadcom STB PCIe controller driver:
- No change, but products using certain WiFi devices may be affected
by removal of CONFIG_PCIE_BUS_* (see above)
Freescale i.MX6 PCIe controller driver:
- Move IMX6SX_GPR12_PCIE_TEST_POWERDOWN handling into the core reset
functions (Richard Zhu)
- Assert PERST# before enabling regulators to ensure that even if
power is enabled, endpoint stays inactive until REFCLK is stable
(Sherry Sun)
- Parse reset properties in Root Port nodes (falling back to host
bridge) to help support Key E connectors and the pwrctrl framework
(Sherry Sun)
- Configure i.MX95 REF_USE_PAD before PHY reset (Richard Zhu)
- Assert i.MX95 ref_clk_en after reference clock stabilizes (Richard
Zhu)
- Integrate new pwrctrl API for DTs with Root Port-level power
supplies (Sherry Sun)
Intel Gateway PCIe controller driver:
- Enable clock before PHY init for correct ordering (Florian Eckert)
- Add .start_link() callback so the driver works again (Florian
Eckert)
- Stop overwriting the ATU base address discovered by
dw_pcie_get_resources() (Florian Eckert)
- Add DT 'atu' region since this is hardware-specific, and fall back
to driver default if lacking (Florian Eckert)
Loongson PCIe controller driver:
- Ignore downstream devices only on internal bridges to avoid
Loongson hardware issue (Rong Zhang)
- Quirk old Loongson-3C6000 bridges that advertise incorrect
supported link speeds (Ziyao Li)
Marvell MVEBU PCIe controller driver:
- Use fixed-width interrupt masks to avoid truncation in 64-bit
builds (Rosen Penev)
MediaTek PCIe controller driver:
- Use FIELD_PREP() to fix incorrect operator precedence in
PCIE_FTS_NUM_L0 (Li RongQing)
- Fix IRQ domain leak when port fails to enable (Manivannan
Sadhasivam)
- Use actual physical address for MSI message address instead of
virt_to_phys() (Manivannan Sadhasivam)
- Add EcoNet EN7528 to DT binding (Caleb James DeLisle)
MediaTek PCIe Gen3 controller driver:
- Deassert PCIE_PHY_RSTB so REFCLK is stable for at least 100ms
(PCIE_T_PVPERL_MS) before deasserting PERST# (Jian Yang)
- Add .shutdown() to assert PERST# before powering down device (Jian
Yang)
- Do full device power down on removal, including asserting PERST#,
when removing driver (Chen-Yu Tsai)
- Fix a 'failed to create pwrctrl devices' error message that was
inadvertently skipped (Chen-Yu Tsai)
NVIDIA Tegra194 PCIe controller driver:
- Program the DesignWare PORT_AFR L1 entrance latency based on the
'aspm-l1-entry-delay-ns' DT property (Manikanta Maddireddy)
Qualcomm PCIe controller driver:
- Add Eliza SoC compatible in DT binding (Krishna Chaitanya Chundru)
- Set max OPP during resume so DBI register accesses don't fail with
NoC errors (Qiang Yu)
- Add pci_host_common_d3cold_possible() to determine whether
downstream devices are already in D3hot and wakeup-enabled devices
are capable of generating PME from D3cold (Krishna Chaitanya
Chundru)
- Add .get_ltssm() callback to get the LTSSM status without DBI,
since DBI may be inaccessible after PME_Turn_Off (Krishna Chaitanya
Chundru)
- Power down PHY via PARF_PHY_CTRL before disabling rails/clocks to
avoid power leakage (Krishna Chaitanya Chundru)
- Decide whether suspend should put the link in L2 and power down
using pci_host_common_d3cold_possible() instead of checking whether
ASPM L1 is enabled (Krishna Chaitanya Chundru)
- Add qcom D3cold support to tear down interconnect bandwidth and OPP
votes (Krishna Chaitanya Chundru)
- Handle unsupported mixed PERST#/PHY DT configurations, e.g., PHY in
RP node while PERST# is in the RC node, but warn about the DT issue
(Qiang Yu)
- Program T_POWER_ON based on DT 't-power-on-us' property in case
hardware advertises incorrect values (Krishna Chaitanya Chundru)
- Disable ASPM L0s for SA8775P (Shawn Guo)
- Initialize DWC MSI lock for firmware-managed ECAM hosts, which
don't use the dw_pcie_host_init() path that initializes the lock
(Yadu M G)
Renesas RZ/G3S PCIe controller driver:
- Add RZ/V2N DT support (Lad Prabhakar)
SOPHGO PCIe controller driver:
- Add 'dma-coherent' DT property for sg2042-pcie driver (Han Gao)
Synopsys DesignWare PCIe controller driver:
- Apply ECRC TLP Digest workaround for all DesignWare cores prior to
5.10a, not just 4.90a and 5.00a (Manikanta Maddireddy)
- Use common struct dw_pcie 'mode' rather than duplicating it in
artpec6, dra7xx, dwc-pcie, and keembay driver structs (Hans Zhang)
- Use DEFINE_SHOW_ATTRIBUTE for ltssm_status debugfs to reduce
boilerplate and fix a seq_file memory leak by including a
.release() callback (Hans Zhang)
- Fix a signedness bug in fault injection test code (Dan Carpenter)
- Avoid NULL pointer dereference when tearing down debugfs for
controller that lacks RAS DES capability (Shuvam Pandey)
MicroSemi Switchtec management driver:
- Add Gen6 Device IDs (Ben Reed)
Miscellaneous:
- Remove unused gpio.h include from amd-mdb, designware-plat, fu740,
visconti drivers (Andy Shevchenko)
- Fix typos in documentation (josh ziegler)
- Use FIELD_MODIFY() instead of open-coding it (Hans Zhang)"
* tag 'pci-v7.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (168 commits)
PCI/sysfs: Use kstrtobool() to parse the ROM attribute input
PCI/sysfs: Limit BAR resize attribute scope to platforms with PCI mmap
PCI/sysfs: Remove pci_create_legacy_files() and pci_sysfs_init()
PCI/sysfs: Convert legacy I/O and memory attributes to static definitions
PCI/sysfs: Add __weak pci_legacy_has_sparse() helper
alpha/PCI: Compute legacy size in pci_mmap_legacy_page_range()
PCI: Add macros for legacy I/O and memory address space sizes
PCI/sysfs: Remove pci_{create,remove}_sysfs_dev_files()
alpha/PCI: Convert resource files to static attributes
alpha/PCI: Add static PCI resource attribute macros
alpha/PCI: Remove WARN from __pci_mmap_fits() and __legacy_mmap_fits()
alpha/PCI: Fix __pci_mmap_fits() overflow for zero-length BARs
alpha/PCI: Use PCI resource accessor macros
alpha/PCI: Use BAR index in sysfs attr->private instead of resource pointer
alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
PCI/sysfs: Limit pci_sysfs_init() late_initcall compile scope
PCI/sysfs: Add stubs for pci_{create,remove}_sysfs_dev_files()
PCI/sysfs: Warn about BAR resize failure in __resource_resize_store()
PCI/sysfs: Convert PCI resource files to static attributes
PCI/proc: Fix race between pci_proc_init() and pci_bus_add_device()
...
|
||
Carlos Bilbao
|
7b6e7e9757 |
misc: pci_endpoint_test: Remove dead BAR read before doorbell trigger
The assignment before the writel sequence is dead code (bar is unconditionally overwritten by the re-read immediately after) so remove the assignment entirely. Note that the DB_BAR register is a plain value written by the endpoint firmware; reading it carries no side effect. Signed-off-by: Carlos Bilbao (Lambda) <carlos.bilbao@kernel.org> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Koichiro Den <den@valinux.co.jp> Link: https://patch.msgid.link/20260410230300.135631-3-carlos.bilbao@kernel.org |
||
|
Carlos Bilbao
|
854bd081c7 |
misc: pci_endpoint_test: Validate BAR index in doorbell test
pci_endpoint_test_doorbell() reads the BAR number directly from an endpoint test register and uses it as an index into test->bar[]. Add a defensive bounds check before the dereference: positive values >= PCI_STD_NUM_BARS are out of range, and NO_BAR (-1) as a negative signed value would slip past an upper-bound-only check. Signed-off-by: Carlos Bilbao (Lambda) <carlos.bilbao@kernel.org> [mani: changed errno to -ERANGE] Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260410230300.135631-2-carlos.bilbao@kernel.org |
||
|
Linus Torvalds
|
0000d9ccbc |
Char/Misc/IIO/FPGA/GPIB/etc driver updates for 7.2-rc1
Here is the big set of char, misc, iio, fpga, and other small driver subsystems changes for 7.2-rc1. Lots of little stuff in here, the majority being of course the IIO driver updates, as a list they are: - IIO driver updates and additions - GPIB driver bugfixes and cleanups - Android binder driver updates (rust and C version) - counter driver updates - MHI driver updates - mei driver updates - w1 driver updates - interconnect driver updates - Comedi driver fixes and updates - some obsolete char drivers removed (applicom and dtlk) - hwtracing driver updates - other tiny driver updates All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCajk4Gg8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yl89wCdG1WBLsvKHZ3zaFWd4POE8G/gS1YAnRf0GcRB 0F1/iBXSZLaRF/p9dsGq =fg13 -----END PGP SIGNATURE----- Merge tag 'char-misc-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull misc driver updates from Greg KH: "Here is the big set of char, misc, iio, fpga, and other small driver subsystems changes for 7.2-rc1. Lots of little stuff in here, the majority being of course the IIO driver updates, as a list they are: - IIO driver updates and additions - GPIB driver bugfixes and cleanups - Android binder driver updates (rust and C version) - counter driver updates - MHI driver updates - mei driver updates - w1 driver updates - interconnect driver updates - Comedi driver fixes and updates - some obsolete char drivers removed (applicom and dtlk) - hwtracing driver updates - other tiny driver updates All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits) w1: ds2482: Use named initializers for arrays of i2c_device_data firmware: stratix10-svc: Add support to query Arm Trusted Firmware (ATF) version firmware: stratix10-rsu: avoid blocking reboot_image sysfs when busy coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer() iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure iio: chemical: scd30: Replace manual locking with RAII locking iio: light: tsl2591: remove unneeded tsl2591_compatible_als_persist_cycle() iio: dac: ad5686: create bus ops struct iio: dac: ad5686: cleanup doc header of local structs iio: dac: ad5686: add control_sync() for single-channel devices iio: dac: ad5686: add helpers to handle powerdown masks iio: dac: ad5686: add of_match table to the spi driver iio: dac: ad5686: drop enum id iio: dac: ad5686: remove redundant register definition iio: dac: ad5686: refactor include headers iio: adc: ad4080: fix AD4880 chip ID iio: light: veml3328: add support for new device dt-bindings: iio: light: veml6030: add veml3328 fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header() fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() ... |
||
Kees Cook
|
079a028d63 |
string: Remove strncpy() from the kernel
strncpy() has been a persistent source of bugs due to its ambiguous intended usage and frequently counter-intuitive semantics: it may not NUL-terminate the destination, and it unconditionally zero-pads to the full length, which isn't always needed. All former callers have been migrated[1] to: - strscpy() for NUL-terminated destinations - strscpy_pad() for NUL-terminated destinations needing zero-padding - strtomem_pad() for non-NUL-terminated fixed-width fields - memcpy_and_pad() for bounded copies with explicit padding - memcpy() for known-length copies Remove the generic implementation, its declaration, the FORTIFY_SOURCE wrapper, and associated tests. Link: https://github.com/KSPP/linux/issues/90 [1] Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Linus Torvalds
|
481329ec5b |
hardening updates for v7.2-rc1
- lkdtm: Add case to provoke a crash in EFI runtime services (Ard Biesheuvel)
- lkdtm: add PPC_RADIX_TLBIEL test and missed isync (Sayali Patil)
- stddef: Document designated initializer semantics for __TRAILING_OVERLAP()
(Gustavo A. R. Silva)
- strarray: drop redundant allocation, add __counted_by_ptr (Thorsten Blum)
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Merge tag 'hardening-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
- lkdtm:
- Add case to provoke a crash in EFI runtime services (Ard Biesheuvel)
- add PPC_RADIX_TLBIEL test and missed isync (Sayali Patil)
- stddef: Document designated initializer semantics for
__TRAILING_OVERLAP() (Gustavo A. R. Silva)
- strarray: drop redundant allocation, add __counted_by_ptr (Thorsten
Blum)
* tag 'hardening-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation
lkdtm/powerpc: add isync after slbmte to enforce SLB update ordering
lkdtm: Add case to provoke a crash in EFI runtime services
lib/string_helpers: annotate struct strarray with __counted_by_ptr
lib/string_helpers: drop redundant allocation in kasprintf_strarray
MAINTAINERS: add kernel hardening keyword __counted_by_ptr
stddef: Document designated initializer semantics for __TRAILING_OVERLAP()
|
||
|
Linus Torvalds
|
464e2f089e |
MMC core:
- Validate host's max_segs to fail gracefully
MMC host:
- davinci: Avoid potential NULL dereference in the IRQ handler
- davinci: Call mmc_add_host() in the correct order during probe
- dw_mmc-exynos: Increase DMA threshold for exynos7870
- renesas_sdhi: Add support for RZ/G2E, RZ/G2N and R-Car M3Le variants
- sdhci-msm: Add support for Hawi, Eliza and Shikra variants
- sdhci-of-k1: Add support for SD UHS-I modes
- sdhci-of-k1: Add support for tuning for eMMC HS200 and SD UHS-I
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Merge tag 'mmc-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Validate host's max_segs to fail gracefully
MMC host:
- davinci:
- Avoid potential NULL dereference in the IRQ handler
- Call mmc_add_host() in the correct order during probe
- dw_mmc-exynos:
- Increase DMA threshold for exynos7870
- renesas_sdhi:
- Add support for RZ/G2E, RZ/G2N and R-Car M3Le variants
- sdhci-msm:
- Add support for Hawi, Eliza and Shikra variants
- sdhci-of-k1:
- Add support for SD UHS-I modes
- Add support for tuning for eMMC HS200 and SD UHS-I"
* tag 'mmc-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (24 commits)
mmc: dw_mmc: Add desc_num field for clarity
dt-bindings: mmc: sdhci-msm: Rename the binding to include 'qcom' prefix
mmc: sdhci-of-dwcmshc: use dev_err_probe() to simplify error paths
mmc: sdhci-of-dwcmshc: remove redundant IS_ERR() check
dt-bindings: mmc: sdhci-msm: qcom: Add Hawi compatible
mmc: renesas_sdhi: Add OF entry for RZ/G2E SoC
mmc: renesas_sdhi: Add OF entry for RZ/G2N SoC
dt-bindings: mmc: sdhci-msm: Add Eliza compatible
mmc: davinci: fix mmc_add_host order in probe
dt-bindings: mmc: sdhci-msm: Document the Shikra compatible
mmc: sdhci-of-k1: add comprehensive SDR tuning support
mmc: sdhci-of-k1: add regulator and pinctrl voltage switching support
mmc: sdhci-of-k1: enable essential clock infrastructure for SD operation
dt-bindings: mmc: spacemit,sdhci: add pinctrl support for voltage switching
mmc: via-sdmmc: Simplify initialisation of pci_device_id array
mmc: davinci: avoid NULL deref of host->data in IRQ handler
memstick: Constify the driver id_table
mmc: host: Move MODULE_DEVICE_TABLE next to the table itself
mmc: renesas_sdhi: add R-Car M3Le compatibility string
dt-bindings: mmc: renesas,sdhi: Document R-Car M3Le support
...
|
||
|
Linus Torvalds
|
2779759c09 |
i2c for v7.2
Two major cleanup across drivers and core code:
- use named initializers in device ID tables
- replace dev_err() with dev_err_probe()
Drivers:
- at24: use named initializers for arrays of i2c_device_data
- at91: add MCHP_LAN966X_PCI dependency
- cadence: add shutdown callback
- k1: enable by default on SpacemiT
- mxs: improve documentation
- qcom-geni: use pm_runtime_force_suspend/resume for system sleep
- tegra:
- disable fair arbitration on non-MCTP buses
- allocate DMA buffers from the correct DMA device
- designware:
- handle active target shutdown cleanly
- add shutdown callbacks for platform and PCI drivers
- adopt the new PM_RUNTIME_ACQUIRE() helpers
DT bindings:
- convert davinci bindings to DT schema
Core and muxes:
- acpi: report missing I2C resources as -ENOENT
- gpiolib: add gpiod_is_single_ended() helper for I2C GPIO users
- i2c-mux-reg: add generic firmware node support
- a set of 10 patches from Johan Hovold fixing adapter
registration races, cleanup paths and resource management
issues
New support:
- DesignWare LECA0003 (ACPI ID)
- Loongson LS2K0300 I2C controller (new driver)
- Qualcomm CCI Glymur and Shikra compatibles
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Merge tag 'i2c-7.2-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux
Pull i2c updates from Andi Shyti:
"This pull request is mostly made of cleanups and small infrastructure
improvements across the I2C core, drivers and bindings. It also adds
support for three drivers and a few new compatibles.
Two major cleanup across drivers and core code:
- use named initializers in device ID tables
- replace dev_err() with dev_err_probe()
Drivers:
- at24: use named initializers for arrays of i2c_device_data
- at91: add MCHP_LAN966X_PCI dependency
- cadence: add shutdown callback
- k1: enable by default on SpacemiT
- mxs: improve documentation
- qcom-geni: use pm_runtime_force_suspend/resume for system sleep
- tegra:
- disable fair arbitration on non-MCTP buses
- allocate DMA buffers from the correct DMA device
- designware:
- handle active target shutdown cleanly
- add shutdown callbacks for platform and PCI drivers
- adopt the new PM_RUNTIME_ACQUIRE() helpers
DT bindings:
- convert davinci bindings to DT schema
Core and muxes:
- acpi: report missing I2C resources as -ENOENT
- gpiolib: add gpiod_is_single_ended() helper for I2C GPIO users
- i2c-mux-reg: add generic firmware node support
- a set of 10 patches from Johan Hovold fixing adapter registration
races, cleanup paths and resource management issues
New support:
- DesignWare LECA0003 (ACPI ID)
- Loongson LS2K0300 I2C controller (new driver)
- Qualcomm CCI Glymur and Shikra compatibles"
* tag 'i2c-7.2-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux: (46 commits)
i2c: mxs: add missing kernel-doc for struct mxs_i2c_dev members
i2c: qcom-geni: Use pm_runtime_force_{suspend,resume} helpers
dt-bindings: i2c: qcom-cci: Document Glymur compatible
dt-bindings: i2c: qcom-cci: Document Shikra compatible
i2c: mux: reg: use device property accessors
i2c: acpi: Return -ENOENT when no resources found in i2c_acpi_client_count()
i2c: at91: Add MCHP_LAN966X_PCI dependency
i2c: eg20t: Consistently define pci_device_ids using named initializers
i2c: designware-pcidrv: Consistently define pci_device_ids using named initializers
i2c: bcm-kona: fix spelling mistake in timeout-check comment
i2c: cadence: Add shutdown handler
i2c: tegra: Disable fair arbitration for non-MCTP buses
i2c: tegra: use dmaengine_get_dma_device() for DMA buffer allocation
i2c: busses: make K1 driver default for SpacemiT platforms
i2c: Use named initializers for arrays of i2c_device_data
i2c: core: clean up adapter registration error label
i2c: core: clean up bus id allocation
i2c: core: fix adapter deregistration race
i2c: core: fix adapter registration race
i2c: core: disable runtime PM on adapter registration failure
...
|
||
|
Linus Torvalds
|
a60ce761d9 |
Updates for the time/timer core subsystem:
- Harden the user space controllable hrtimer interfaces further to
protect against unpriviledged DoS attempts by arming timers in the past.
- Add per-capacity hierarchies to the timer migration code to prevent
timer migration accross different capacity domains. This code has been
disabled last minute as there is a pathological problem with SoCs which
advertise a larger number of capacity domains. The problem is under
investigation and the code won't be active before v7.3, but that turned
out to be less intrusive than a full revert as it preserves the
preparatory steps and allows people to work on the final resolution
- Export time namespace functionality as a recent user can be built as a
module.
- Initialize the jiffies clocksource before using it. The recent
hardening against time moving backward requires that the related
members of struct clocksource have been initialized, otherwise it
clamps the readout to 0, which makes time stand sill and causes boot
delays.
- Fix a more than twenty year old PID reference count leak in an error
path of the POSIX CPU timer code.
- The usual small fixes, improvements and cleanups all over the place.
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Merge tag 'timers-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner:
"Updates for the time/timer core subsystem:
- Harden the user space controllable hrtimer interfaces further to
protect against unpriviledged DoS attempts by arming timers in the
past.
- Add per-capacity hierarchies to the timer migration code to prevent
timer migration accross different capacity domains. This code has
been disabled last minute as there is a pathological problem with
SoCs which advertise a larger number of capacity domains. The
problem is under investigation and the code won't be active before
v7.3, but that turned out to be less intrusive than a full revert
as it preserves the preparatory steps and allows people to work on
the final resolution
- Export time namespace functionality as a recent user can be built
as a module.
- Initialize the jiffies clocksource before using it. The recent
hardening against time moving backward requires that the related
members of struct clocksource have been initialized, otherwise it
clamps the readout to 0, which makes time stand sill and causes
boot delays.
- Fix a more than twenty year old PID reference count leak in an
error path of the POSIX CPU timer code.
- The usual small fixes, improvements and cleanups all over the
place"
* tag 'timers-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (31 commits)
posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
time/jiffies: Register jiffies clocksource before usage
timers/migration: Temporarily disable per capacity hierarchies
timers/migration: Turn tmigr_hierarchy level_list into a flexible array
timers/migration: Deactivate per-capacity hierarchies under nohz_full
timers/migration: Fix hotplug migrator selection target on asymetric capacity machines
ntsync: Honour caller's time namespace for absolute MONOTONIC timeouts
time/namespace: Export init_time_ns and do_timens_ktime_to_host()
timers/migration: Update stale @online doc to @available
timers: Fix flseep() typo in kernel-doc comment
hrtimer: Fix the bogus return type of __hrtimer_start_range_ns()
hrtimer: Return ktime_t from hrtimer_get_next_event()/hrtimer_next_event_without()
clocksource: Clean up clocksource_update_freq() functions
alarmtimer: Remove stale return description from alarm_handle_timer()
selftests/posix_timers: Use CLOCK_THREAD_CPUTIME_ID for ITIMER_PROF measurements
scripts/timers: Add timer_migration_tree.py
timers/migration: Handle capacity in connect tracepoints
timers/migration: Split per-capacity hierarchies
timers/migration: Track CPUs in a hierarchy
timers/migration: Abstract out hierarchy to prepare for CPU capacity awareness
...
|
||
Greg Kroah-Hartman
|
47b56cc367 |
IIO: New device support, features and cleanup for the 7.2 cycle.
Like many areas of the kernel IIO has seen a lot of new contributors though in this case that is not all AI driven, but also reflects and annual surge of student contributions from usp.br. We also have several new regular reviewers who are helping with the surge (thanks to all our active reviewers!) Given there was a lot of cases of similar improvements applied to different drivers, I have grouped those into a special section (various drivers) to avoid mass duplication. New device support ------------------ adi,ad4130 - Add support for AD4129-4, AD4129-8, AD4130-4, AD4131-4 and AD4131-8 after reworking the driver to be suitable for multiple device support. adi,ad4080 - Support the AD4880 and AD4884 dual-channel parts. Interesting parts as have two separate data pipelines (including SPI buses interfaces), but the only current backend IP combines the two so they cannot be treated as independent devices. adi,ad5706r - New driver for this 4 channel current output DAC. adi,ad4691 - New driver supporting this family of ADCs. Support for AD4691, AD4692, AD4693 and AD4694 which support either 8 or 16 channels with different max sampling rates. Feature rich driver including SPI offload support. adi,ltc2983 - Add support for the ADT7604 in which the same sensor die as the LTC2984 is used for leak detection (liquid coverage of a sense area). allwinner,adc - Support for A523 SoCs. Similar to existing parts but with an additional clock. Includes adding support for non contiguous channel lookup for in kernel use (fwnode_xlate callback). broadcomm,apds9999 - New driver for the APDS9999 Ambient Light, RGB and proximity sensor. memsic,mmc5983 - New driver for this 3-axis magnetometer. taos,tsl2772 - Add support for the AVAGO APDS9900 and APDS9901 Ambient Light and Proximity sensors. which are very similar to existing part with slightly different integration time choices. Includes removal of driver for these parts from drivers/misc. vishay,veml3328 - New driver for this RGB+IR light sensor. Features -------- IIO Core - Support for IEEE 754 floating point values in buffer scan elements. - Support quaternion axis representation (missing the scaler part) microchip,mcp4821 - Add configurable gain control qcom,pm8xxx-xoadc - Add per channel labels. st,lsm6dsx - Support for rotation sensing on the LSM6DSV and LSM6DSV16X using both floating point and new quaterionaxis rotation modifier. MAINTAINERS update ------------------ IIO top level entry - Include Documentation/driver-api/iio/ adi,* - Top level ADI entry maintainer switch from Lars-Peter Clausen to Nuno Sá reflecting what has been the reality for some time. Thanks to Lars-Peter who was very active for many years, but has moved on to other things. Also add the linux@analog.com email list to ensure we don't get a gap in future. - Maintainer updates to reflect Cosmin Tanislav having moved on - thanks to Marcelo Schmitt for taking these over. sensiron,scd30 - Replace maintainer (Tomasz Duszynski) with Maxwell Doose. Cleanups, minor fixes and hardening. ------------------------------------ Documentation - Add missing powerdown modes to ABI docs. - Use modern helpers for buffer definition in the examples. core - Rework of the handling of timestamps so that the offset is cached at buffer resize time (during enabling) rather than based on assumption that relied in the timestamp being last and the largest element and so always 8 bytes before end of the scan. Underlying problem was triggered by scans with repeated type elements such as quaternions with each element more than 2 bytes - Giving a 16 byte+ aligned channel with result that a following timestamp may be 16 bytes from end of scan, rather than 8. Note that for the bosch,bno55 a compatibility hack means that it will duplicate the timestamp putting a second copy at previously incorrect location. - Tidy up use of kernel types in buffer code to not use int64_t given all calls use s64. various drivers - Drop unused driver_data in device id tables - includes cleanup of various drivers that had only one choice where it can be hard coded elsewhere. - Move to named initializers for many i2c_device_id and platform_device_id tables (I have no idea how we go into habit of using named initializers for only a subset of the table types - e.g. of_device_id). - Make IIO_CHAN_SOFT_TIMESTAMP() macro a compound literal allowing simple use in various drivers that do dynamic channel definitions. Use it in all such cases. - Use dev_err_probe() and local dev variables to tidy up older drivers. - Switch more drivers to devm_mutex_init() to provide minor debug benefits. - Reorder code to put MODULE_DEVICE_TABLE() next to the tables. - Lots of use of cleanup.h magic to improve code flow, often including related refactors such as introducing helpers. - Replacement of usleep_range() with fsleep() - Reduce logging noise where functions either provide their own extensive reports on error, or where a clear error code is returned to userspace. - Minor spelling and style fixes (improving bracket usage, not using __packed etc) hid-sensors-* - Drop helpers for setting channel bit masks in favor of a compound literal at the call site. Also general cleanup of surrounding code. hid-sensors-magn - Use u32 rather than bare unsigned for types. hid-sensors-rotation - Make sue of ext_scan_type handling for static case rather than duplicate chan_info structures. adi,ad3552r - Use field_get() to replace open coded equivalent. adi,ad4170 - Switch from switch to table lookup for GPIO modes. adi,ad5686 - Apply IWYU principal to included a consistent set of headers. - Deduplicate regmaps for AD5684 and AD5693 as identical. - Switch from an enum value in driver data and array look up to pointers to separate structures, improving readabilty and avoiding issues with 0 value when using helpers to deal with different firmware types. - Add of_match_id table to SPI driver rather than relying on fallback to spi_device_id table. - Introduce some helpers for powerdown mask control. - Add helpers for control sync simplifying a couple of corner cases. - Docs fixes. - Add an ops structure to simplify future addition of operations beyond read and write. adi,ad7191 - Switch to best practice of using device_property_present() to detect if an optional property is there rather than error values on querying the property. adi,ad7280a - Use local variables to improve readability of breaking up chan-address. adi,ad7825 - Cleanup a type mismatch in clamp() call. adi,ad799x - Include improvements - Local dev variable to shorten code lines. - Cache regulator voltage at probe (these never change in practice) - Convert to devm for all unwind handling. adi,ad9832 - Improve include relevance including replacing kernel.h with more specific headers. - Simplify some maths. adi,ad9834 - Improve include relevance including replacing kernel.h with more specific headers. adi,adt7316 - Add a comment to avoid future 'fixes' for error handling during the odd sequence used to flip from I2C mode to SPI mode. adi,adxl* - Documentation consistency improvements. asahi-kasei,ak8975 - Fix missing runtime pm calls for buffered capture. - Fix missing pm_runtime_put_autosuspend() in an error path that would leave the device stuck on. - Close a potential uninitialized kernel stack leak. - Extensive driver modernization including: header relevance, fsleep() various minor bugs, dropping duplicate error messages and avoiding magic lengths for buffers. - Replace opencoded polling with iopoll(). - Add error checking to gpio reads. avia,hx711 - Move scale computation from global data to per device avoiding problems if multiple devices present. - General binding text cleanup. bosch,bmg160 - Add missing mount-matrix entry to binding. bosch,bno55 - Terminate error strings with newlines. devantech,srf08 - Replace sprintf() with sysfs_emit() and sysfs_emit_at() to make intent clearer. freescale,mma8452 - Add missing return value check. - Fix potential probe ordering issue by switching to non devm irq request. linear,ltc2309 - Add chip specific read delays. - Improve chip_info structure, adding __counted_by_ptr marking and reorganizing to improve packing. linear,ltc2983 - Fix a firmware combination where default n_wires of 2 bypasses exclusion of adi,current-rotate whereas explicitly setting it to 2 does not. - Fix potential race with completion reinit. - Improve error message wording consistency. - Use fwnode_property_present() to detect optional properties rather than fragile return value checking. microchip,mcp3422 - Use of GENMASK(), FIELD_GET(), FIELD_PREP() to improve readability and generally modernize driver. microchip,mcp47feb02 - Fix binding example to use a possible I2C address. - Fix binding bounds on channel number. - Standardize binding example indentation nxp,saradc - Increase chances of recovering from a failure in the interrupt handler by notifying the trigger that it can reenable even when the read failed. - Use field_get() to replace opencoded equivalent. qualcomm,* - Standardize on Qualcomm company naming in Kconfig. richtek,rtq6056 - Add i2c_device_id table for legacy instantiation. samsung,ssp - Replace custom timestamp channel macro with main one. sciosense,ens210 - Now scoped_guard() has been reworked, no need for a return that can never be reached. sensiron,scd30 - Constify command lookup table. - Sanity check for NULL buffer of non zero size being provided to sc30_i2c_command() sensortek,stk3310 - Include more appropriate headers. - Ensure interrupt in appropriate mode after resume. - Structure definition improvements. - Use size_of() to replace opencoded sizes. siliconimage,si1133 - Resolve counter related issues on timeout error paths. - Unused macro removal, improved macro definitions,. - Include relevance improvements. st,lsm6dsx - Fix an issue with applying invalid data check to wrong type of sample. taos,tcs3472 - Try to powerdown chip on probe failure. - Devm usage and dropping of remove() callback. - Various other minor cleanup. taos,tsl2591 - Dead code removal. - Simplify tsl2591_persist functions using a look up table. ti,ads1298 - Fix wrong comment on timeout (and minor code improvement) - Drop unnecessary CONFIG2 write during init. ti,ads7950 - Check ret rather that ret < 0 for spi_setup() call. - Use fully devm managed resources including moving to devm_regulator_get_enable_read_voltage() at probe time rather than querying evey time. - Using spi_optimize_message() to reduce CPU usage. ti,ads8688 - User read_avail() callback rather than open coding handling of available attributes. ti,opt3001 - Header relevance improvements - Use GENMASK for field definitions to improve readability. vishay,vcnl4000 - Switch from enum in device_data to individual names structures impmroving code readabililty. - Move to devm handling for remainder of probe. vishay,veml6030 - Drop pointless read of current Iteration Time index as it is not used. xilinx,ams - Fix potential out of bound channel lookup. - Replace some large switch statements with table lookups. yamaha,yas530 - Put label in chip info structure to avoid look up in i2c_device_id table. Drop ---- iio-trig-interrupt. - Not used for some time and no support for modern firmware bindings or in kernel users. 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Like many areas of the kernel IIO has seen a lot of new contributors though in this case that is not all AI driven, but also reflects and annual surge of student contributions from usp.br. We also have several new regular reviewers who are helping with the surge (thanks to all our active reviewers!) Given there was a lot of cases of similar improvements applied to different drivers, I have grouped those into a special section (various drivers) to avoid mass duplication. New device support ------------------ adi,ad4130 - Add support for AD4129-4, AD4129-8, AD4130-4, AD4131-4 and AD4131-8 after reworking the driver to be suitable for multiple device support. adi,ad4080 - Support the AD4880 and AD4884 dual-channel parts. Interesting parts as have two separate data pipelines (including SPI buses interfaces), but the only current backend IP combines the two so they cannot be treated as independent devices. adi,ad5706r - New driver for this 4 channel current output DAC. adi,ad4691 - New driver supporting this family of ADCs. Support for AD4691, AD4692, AD4693 and AD4694 which support either 8 or 16 channels with different max sampling rates. Feature rich driver including SPI offload support. adi,ltc2983 - Add support for the ADT7604 in which the same sensor die as the LTC2984 is used for leak detection (liquid coverage of a sense area). allwinner,adc - Support for A523 SoCs. Similar to existing parts but with an additional clock. Includes adding support for non contiguous channel lookup for in kernel use (fwnode_xlate callback). broadcomm,apds9999 - New driver for the APDS9999 Ambient Light, RGB and proximity sensor. memsic,mmc5983 - New driver for this 3-axis magnetometer. taos,tsl2772 - Add support for the AVAGO APDS9900 and APDS9901 Ambient Light and Proximity sensors. which are very similar to existing part with slightly different integration time choices. Includes removal of driver for these parts from drivers/misc. vishay,veml3328 - New driver for this RGB+IR light sensor. Features -------- IIO Core - Support for IEEE 754 floating point values in buffer scan elements. - Support quaternion axis representation (missing the scaler part) microchip,mcp4821 - Add configurable gain control qcom,pm8xxx-xoadc - Add per channel labels. st,lsm6dsx - Support for rotation sensing on the LSM6DSV and LSM6DSV16X using both floating point and new quaterionaxis rotation modifier. MAINTAINERS update ------------------ IIO top level entry - Include Documentation/driver-api/iio/ adi,* - Top level ADI entry maintainer switch from Lars-Peter Clausen to Nuno Sá reflecting what has been the reality for some time. Thanks to Lars-Peter who was very active for many years, but has moved on to other things. Also add the linux@analog.com email list to ensure we don't get a gap in future. - Maintainer updates to reflect Cosmin Tanislav having moved on - thanks to Marcelo Schmitt for taking these over. sensiron,scd30 - Replace maintainer (Tomasz Duszynski) with Maxwell Doose. Cleanups, minor fixes and hardening. ------------------------------------ Documentation - Add missing powerdown modes to ABI docs. - Use modern helpers for buffer definition in the examples. core - Rework of the handling of timestamps so that the offset is cached at buffer resize time (during enabling) rather than based on assumption that relied in the timestamp being last and the largest element and so always 8 bytes before end of the scan. Underlying problem was triggered by scans with repeated type elements such as quaternions with each element more than 2 bytes - Giving a 16 byte+ aligned channel with result that a following timestamp may be 16 bytes from end of scan, rather than 8. Note that for the bosch,bno55 a compatibility hack means that it will duplicate the timestamp putting a second copy at previously incorrect location. - Tidy up use of kernel types in buffer code to not use int64_t given all calls use s64. various drivers - Drop unused driver_data in device id tables - includes cleanup of various drivers that had only one choice where it can be hard coded elsewhere. - Move to named initializers for many i2c_device_id and platform_device_id tables (I have no idea how we go into habit of using named initializers for only a subset of the table types - e.g. of_device_id). - Make IIO_CHAN_SOFT_TIMESTAMP() macro a compound literal allowing simple use in various drivers that do dynamic channel definitions. Use it in all such cases. - Use dev_err_probe() and local dev variables to tidy up older drivers. - Switch more drivers to devm_mutex_init() to provide minor debug benefits. - Reorder code to put MODULE_DEVICE_TABLE() next to the tables. - Lots of use of cleanup.h magic to improve code flow, often including related refactors such as introducing helpers. - Replacement of usleep_range() with fsleep() - Reduce logging noise where functions either provide their own extensive reports on error, or where a clear error code is returned to userspace. - Minor spelling and style fixes (improving bracket usage, not using __packed etc) hid-sensors-* - Drop helpers for setting channel bit masks in favor of a compound literal at the call site. Also general cleanup of surrounding code. hid-sensors-magn - Use u32 rather than bare unsigned for types. hid-sensors-rotation - Make sue of ext_scan_type handling for static case rather than duplicate chan_info structures. adi,ad3552r - Use field_get() to replace open coded equivalent. adi,ad4170 - Switch from switch to table lookup for GPIO modes. adi,ad5686 - Apply IWYU principal to included a consistent set of headers. - Deduplicate regmaps for AD5684 and AD5693 as identical. - Switch from an enum value in driver data and array look up to pointers to separate structures, improving readabilty and avoiding issues with 0 value when using helpers to deal with different firmware types. - Add of_match_id table to SPI driver rather than relying on fallback to spi_device_id table. - Introduce some helpers for powerdown mask control. - Add helpers for control sync simplifying a couple of corner cases. - Docs fixes. - Add an ops structure to simplify future addition of operations beyond read and write. adi,ad7191 - Switch to best practice of using device_property_present() to detect if an optional property is there rather than error values on querying the property. adi,ad7280a - Use local variables to improve readability of breaking up chan-address. adi,ad7825 - Cleanup a type mismatch in clamp() call. adi,ad799x - Include improvements - Local dev variable to shorten code lines. - Cache regulator voltage at probe (these never change in practice) - Convert to devm for all unwind handling. adi,ad9832 - Improve include relevance including replacing kernel.h with more specific headers. - Simplify some maths. adi,ad9834 - Improve include relevance including replacing kernel.h with more specific headers. adi,adt7316 - Add a comment to avoid future 'fixes' for error handling during the odd sequence used to flip from I2C mode to SPI mode. adi,adxl* - Documentation consistency improvements. asahi-kasei,ak8975 - Fix missing runtime pm calls for buffered capture. - Fix missing pm_runtime_put_autosuspend() in an error path that would leave the device stuck on. - Close a potential uninitialized kernel stack leak. - Extensive driver modernization including: header relevance, fsleep() various minor bugs, dropping duplicate error messages and avoiding magic lengths for buffers. - Replace opencoded polling with iopoll(). - Add error checking to gpio reads. avia,hx711 - Move scale computation from global data to per device avoiding problems if multiple devices present. - General binding text cleanup. bosch,bmg160 - Add missing mount-matrix entry to binding. bosch,bno55 - Terminate error strings with newlines. devantech,srf08 - Replace sprintf() with sysfs_emit() and sysfs_emit_at() to make intent clearer. freescale,mma8452 - Add missing return value check. - Fix potential probe ordering issue by switching to non devm irq request. linear,ltc2309 - Add chip specific read delays. - Improve chip_info structure, adding __counted_by_ptr marking and reorganizing to improve packing. linear,ltc2983 - Fix a firmware combination where default n_wires of 2 bypasses exclusion of adi,current-rotate whereas explicitly setting it to 2 does not. - Fix potential race with completion reinit. - Improve error message wording consistency. - Use fwnode_property_present() to detect optional properties rather than fragile return value checking. microchip,mcp3422 - Use of GENMASK(), FIELD_GET(), FIELD_PREP() to improve readability and generally modernize driver. microchip,mcp47feb02 - Fix binding example to use a possible I2C address. - Fix binding bounds on channel number. - Standardize binding example indentation nxp,saradc - Increase chances of recovering from a failure in the interrupt handler by notifying the trigger that it can reenable even when the read failed. - Use field_get() to replace opencoded equivalent. qualcomm,* - Standardize on Qualcomm company naming in Kconfig. richtek,rtq6056 - Add i2c_device_id table for legacy instantiation. samsung,ssp - Replace custom timestamp channel macro with main one. sciosense,ens210 - Now scoped_guard() has been reworked, no need for a return that can never be reached. sensiron,scd30 - Constify command lookup table. - Sanity check for NULL buffer of non zero size being provided to sc30_i2c_command() sensortek,stk3310 - Include more appropriate headers. - Ensure interrupt in appropriate mode after resume. - Structure definition improvements. - Use size_of() to replace opencoded sizes. siliconimage,si1133 - Resolve counter related issues on timeout error paths. - Unused macro removal, improved macro definitions,. - Include relevance improvements. st,lsm6dsx - Fix an issue with applying invalid data check to wrong type of sample. taos,tcs3472 - Try to powerdown chip on probe failure. - Devm usage and dropping of remove() callback. - Various other minor cleanup. taos,tsl2591 - Dead code removal. - Simplify tsl2591_persist functions using a look up table. ti,ads1298 - Fix wrong comment on timeout (and minor code improvement) - Drop unnecessary CONFIG2 write during init. ti,ads7950 - Check ret rather that ret < 0 for spi_setup() call. - Use fully devm managed resources including moving to devm_regulator_get_enable_read_voltage() at probe time rather than querying evey time. - Using spi_optimize_message() to reduce CPU usage. ti,ads8688 - User read_avail() callback rather than open coding handling of available attributes. ti,opt3001 - Header relevance improvements - Use GENMASK for field definitions to improve readability. vishay,vcnl4000 - Switch from enum in device_data to individual names structures impmroving code readabililty. - Move to devm handling for remainder of probe. vishay,veml6030 - Drop pointless read of current Iteration Time index as it is not used. xilinx,ams - Fix potential out of bound channel lookup. - Replace some large switch statements with table lookups. yamaha,yas530 - Put label in chip info structure to avoid look up in i2c_device_id table. Drop ---- iio-trig-interrupt. - Not used for some time and no support for modern firmware bindings or in kernel users. So drop it. * tag 'iio-for-7.2a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (266 commits) iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure iio: chemical: scd30: Replace manual locking with RAII locking iio: light: tsl2591: remove unneeded tsl2591_compatible_als_persist_cycle() iio: dac: ad5686: create bus ops struct iio: dac: ad5686: cleanup doc header of local structs iio: dac: ad5686: add control_sync() for single-channel devices iio: dac: ad5686: add helpers to handle powerdown masks iio: dac: ad5686: add of_match table to the spi driver iio: dac: ad5686: drop enum id iio: dac: ad5686: remove redundant register definition iio: dac: ad5686: refactor include headers iio: adc: ad4080: fix AD4880 chip ID iio: light: veml3328: add support for new device dt-bindings: iio: light: veml6030: add veml3328 docs: iio: adc: ad4691: add driver documentation iio: adc: ad4691: add oversampling support iio: adc: ad4691: add SPI offload support iio: adc: ad4691: add triggered buffer support iio: adc: ad4691: add initial driver for AD4691 family dt-bindings: iio: adc: add AD4691 family ... |
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Zhenghang Xiao
|
07ebe87915 |
misc: fastrpc: fix use-after-free race in fastrpc_map_create
fastrpc_map_lookup returns a raw pointer after releasing fl->lock. The
caller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero)
on this unprotected pointer. A concurrent MEM_UNMAP can free the map
between the lock release and the kref operation, resulting in a
use-after-free on the freed slab object.
Restore the take_ref parameter to fastrpc_map_lookup so the reference
is acquired atomically under fl->lock before the pointer is exposed to
the caller.
Fixes:
|
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Mukesh Ojha
|
5401fb4fe1 |
misc: fastrpc: Fix NULL pointer dereference in rpmsg callback
A NULL pointer dereference was observed on Hawi at boot when the DSP
sends a glink message before fastrpc_rpmsg_probe() has completed
initialization:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000178
pc : _raw_spin_lock_irqsave+0x34/0x8c
lr : fastrpc_rpmsg_callback+0x3c/0xcc [fastrpc]
...
Call trace:
_raw_spin_lock_irqsave+0x34/0x8c (P)
fastrpc_rpmsg_callback+0x3c/0xcc [fastrpc]
qcom_glink_native_rx+0x538/0x6a4
qcom_glink_smem_intr+0x14/0x24 [qcom_glink_smem]
The faulting address 0x178 corresponds to the lock variable inside
struct fastrpc_channel_ctx, confirming that cctx is NULL when
fastrpc_rpmsg_callback() attempts to take the spinlock.
There are two issues here. First, dev_set_drvdata() is called before
spin_lock_init() and idr_init(), leaving a window where the callback
can retrieve a valid cctx pointer but operate on an uninitialized
spinlock. Second, the rpmsg channel becomes live as soon as the driver
is bound, so fastrpc_rpmsg_callback() can fire before dev_set_drvdata()
is called at all, resulting in dev_get_drvdata() returning NULL.
Fix both issues by moving all cctx initialization ahead of
dev_set_drvdata() so the structure is fully initialized before it
becomes visible to the callback, and add a NULL check in
fastrpc_rpmsg_callback() as a guard against any remaining window.
Fixes:
|
||
|
Junrui Luo
|
464c6ad2aa |
misc: fastrpc: fix DMA address corruption due to find_vma misuse
fastrpc_get_args() uses find_vma() to look up the VMA for a user-provided
pointer and compute a DMA address offset. When the address falls in a gap
before the returned VMA, (ptr & PAGE_MASK) - vma->vm_start underflows,
corrupting the DMA address sent to the DSP.
Replace find_vma() with vma_lookup(), which returns NULL when the address
is not contained within any VMA.
Cc: stable@vger.kernel.org
Fixes:
|
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|
Anandu Krishnan E
|
e85eb5feca |
misc: fastrpc: fix use-after-free of fastrpc_user in workqueue context
There is a race between fastrpc_device_release() and the workqueue
that processes DSP responses. When the user closes the file descriptor,
fastrpc_device_release() frees the fastrpc_user structure. Concurrently,
an in-flight DSP invocation can complete and fastrpc_rpmsg_callback()
schedules context cleanup via schedule_work(&ctx->put_work). If the
workqueue runs fastrpc_context_free() in parallel with or after
fastrpc_device_release() has freed the user structure, it dereferences
the freed fastrpc_user. Depending on the state of the context at the
time of the race, any one of the following accesses can be hit:
1. fastrpc_buf_free() calls fastrpc_ipa_to_dma_addr(buf->fl->cctx, ...)
to strip the SID bits from the stored IOVA before passing the
physical address to dma_free_coherent().
2. fastrpc_free_map() reads map->fl->cctx->vmperms[0].vmid to
reconstruct the source permission bitmask needed for the
qcom_scm_assign_mem() call that returns memory from the DSP VM
back to HLOS.
3. fastrpc_free_map() acquires map->fl->lock to safely remove the
map node from the fl->maps list.
The resulting use-after-free manifests as:
pc : fastrpc_buf_free+0x38/0x80 [fastrpc]
lr : fastrpc_context_free+0xa8/0x1b0 [fastrpc]
fastrpc_context_free+0xa8/0x1b0 [fastrpc]
fastrpc_context_put_wq+0x78/0xa0 [fastrpc]
process_one_work+0x180/0x450
worker_thread+0x26c/0x388
Add kref-based reference counting to fastrpc_user. Have each invoke
context take a reference on the user at allocation time and release it
when the context is freed. Release the initial reference in
fastrpc_device_release() at file close. Move the teardown of the user
structure — freeing pending contexts, maps, mmaps, and the channel
context reference — into the kref release callback fastrpc_user_free(),
so that it runs only when the last reference is dropped, regardless of
whether that happens at device close or after the final in-flight
context completes.
Fixes:
|
||
Maoyi Xie
|
180a232ea7 |
ntsync: Honour caller's time namespace for absolute MONOTONIC timeouts
ntsync_schedule() takes the absolute timeout from userspace and hands it to
schedule_hrtimeout_range_clock() with HRTIMER_MODE_ABS. For the default
CLOCK_MONOTONIC path, it does not call timens_ktime_to_host() first.
A process inside a CLOCK_MONOTONIC time namespace computes the absolute
timeout in its own clock view. The kernel reads the same value against the
host clock. The two differ by the namespace offset. The timeout then fires
too early or too late.
Other users of absolute timeouts run the ktime through
timens_ktime_to_host() before starting the hrtimer. ntsync was added later
and missed that step.
/dev/ntsync is mode 0666. Any user inside a time namespace that can
open it is affected. The visible effect is wrong timeout behaviour
for Wine in a container that sets a CLOCK_MONOTONIC offset.
Reproducer: unshare --user --time, set the monotonic offset to -10s,
issue NTSYNC_IOC_WAIT_ANY with a 100 ms absolute MONOTONIC timeout.
The baseline run elapses about 100 ms. The run inside the namespace
elapses about 0 ms.
Apply timens_ktime_to_host() to the parsed timeout when the caller
did not set NTSYNC_WAIT_REALTIME. The helper does nothing in the
initial time namespace, so the fast path is unchanged.
Fixes:
|
||
Jonathan Cameron
|
c82228f76a |
Linux 7.1-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmocssAeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGsvMIAIYkDW1HujnkP3/G SzQuQozH30O8Fpxdo+axRG6DweP2DTW1lD35YPJJsVto0G2BJZVjzsrx8RSgV6uz DDY+Y0x0/VknMZ4JDrDoWRIyHaVV6p3+NcSHhwrxctQsa8UdEf4aXGaTf91nIBSB GCX5R2YxxuQSTMZ19F/e+UShnRC5OO0FbCB5xhSnUJX3+eoRe0mcGAQB4DBUKxsx BZ5DMOmoiEyPFJbdmy11X0epgJ32qgL7HPYLEo44Vcfy/Ot9lrL9b4vKbG+b3N1P YAZccYH/dlpUuk7piR37H87Ntgz/SZcYbJlx2iAWoNk4tMmfRUO16igar8yFHjSt FLN2Zx4= =ufVr -----END PGP SIGNATURE----- Merge tag 'v7.1-rc6' into work Linux 7.1-rc6 |
||
|
Greg Kroah-Hartman
|
da61573f78 |
Linux 7.1-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmocssAeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGsvMIAIYkDW1HujnkP3/G SzQuQozH30O8Fpxdo+axRG6DweP2DTW1lD35YPJJsVto0G2BJZVjzsrx8RSgV6uz DDY+Y0x0/VknMZ4JDrDoWRIyHaVV6p3+NcSHhwrxctQsa8UdEf4aXGaTf91nIBSB GCX5R2YxxuQSTMZ19F/e+UShnRC5OO0FbCB5xhSnUJX3+eoRe0mcGAQB4DBUKxsx BZ5DMOmoiEyPFJbdmy11X0epgJ32qgL7HPYLEo44Vcfy/Ot9lrL9b4vKbG+b3N1P YAZccYH/dlpUuk7piR37H87Ntgz/SZcYbJlx2iAWoNk4tMmfRUO16igar8yFHjSt FLN2Zx4= =ufVr -----END PGP SIGNATURE----- Merge tag 'v7.1-rc6' into char-misc-next We need the char/misc/iio fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Uwe Kleine-König (The Capable Hub)
|
7b1d4ad96e |
misc: pch_phub: Introduce an enum for device indentification
Instead of using magic constants give them names that make the code more idiomatic. While touching the pci_device_id array, use named initializers to assign .driver_data. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/62223b743982616b1085c03f67ff88a2412d3da1.1779360001.git.u.kleine-koenig@baylibre.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Uwe Kleine-König (The Capable Hub)
|
d14b649fd9 |
misc: pch_phub: Drop two unused functions
The two functions are unused since commit
|
||
|
Uwe Kleine-König (The Capable Hub)
|
adb2d73d42 |
misc: tifm: Use PCI_VDEVICE to initialize pci_device_id array
The PCI_VDEVICE macro allows to assign the first four members of pci_device_id more idiomatic and compact. Also drop trailing zeros in the list initializer that the compiler takes care of then. The driver doesn't use neither .class, .class_mask nor .driver_data, so it's fine to not assign these explicitly. There are no changes to the compiled data; confirmed using an x86 and an arm64 build. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20260507080402.2672527-2-u.kleine-koenig@baylibre.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
Abhishikth J
|
4c4c83e9ee |
drivers: misc: vmw_vmci: fix typo in comment
Correct spelling of "Intializes" to "Initializes" in comment. Signed-off-by: Abhishikth J <abhishikthj7@gmail.com> Link: https://patch.msgid.link/20260504184144.33665-1-abhishikthj7@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Uwe Kleine-König (The Capable Hub)
|
048a96b73f |
misc: rtsx: Use named initializers for struct pci_device_id
Initializing structures using list initializers is harder to read than using named initializers. Seeing the member name is more ideomatic and easier to understand. Use named initializers for the driver's pci_device_id array. While at it also drop an explicit zero in the terminating array entry. There are no changes to the compiled result of the array; verified with builds for x86 and arm64. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20260504155715.2163032-2-u.kleine-koenig@baylibre.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Alexander Usyskin
|
314e01d7f6 |
mei: me: remove comma from mei_cfg_idx sentinel
Adhere to termnator line rule and remove comma from sentinel in enum mei_cfg_idx. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Link: https://patch.msgid.link/20260409125524.111530-4-alexander.usyskin@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Alexander Usyskin
|
25b18b8591 |
mei: expose device kind for ioe device
Detect IO extender device and set appropriate kind. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Co-developed-by: Reuven Abliyev <reuvenab@gmail.com> Signed-off-by: Reuven Abliyev <reuvenab@gmail.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Link: https://patch.msgid.link/20260409125524.111530-3-alexander.usyskin@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Alexander Usyskin
|
00d56ac077 |
mei: store kind as enum
Simplify flows and prepare for future flexibility by storing kind as enum and converting to string only in sysfs. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Co-developed-by: Reuven Abliyev <reuvenab@gmail.com> Signed-off-by: Reuven Abliyev <reuvenab@gmail.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Link: https://patch.msgid.link/20260409125524.111530-2-alexander.usyskin@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Xiaolei Wang
|
3677041715 |
misc: rp1: Send IACK on IRQ activate to fix kdump/kexec
After a kexec/kdump reboot, the macb Ethernet controller fails to
receive any packets, causing DHCP to hang indefinitely and the network
interface to be unusable despite link being up.
The root cause is that RP1's level-triggered MSI-X interrupt sources
(such as macb on hwirq 6) may have their internal state machines stuck
in the "waiting for IACK" state. This happens because the previous
kernel crashed before sending the acknowledgment for a pending level
interrupt.
In this stuck state, RP1 will not generate new MSI-X writes even though
the interrupt source remains asserted. Since no new MSI-X is sent, the
GIC never sees a new edge, the chained IRQ handler is never invoked,
and the interrupt is permanently lost.
Fix this by sending MSIX_CFG_IACK in rp1_irq_activate(). This
unconditionally resets the MSI-X state machine back to idle when a
child device requests its interrupt. If the interrupt source is still
asserted, RP1 will immediately issue a new MSI-X with the freshly
configured msg_addr/msg_data, and normal interrupt delivery resumes.
Writing IACK when the state machine is already idle (i.e., on a normal
cold boot) is harmless — it has no effect.
Fixes:
|
||
Sayali Patil
|
122b52f0ba |
lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation
Add a new LKDTM trigger (PPC_RADIX_TLBIEL) that executes a process-scoped radix TLBIEL instruction to exercise the radix MMU behaviour and associated machine check exception (MCE) handling paths. This provides a way to validate MCE handling in radix mode. Currently, there is no dedicated LKDTM test that exercises this path or allows triggering radix-specific machine check behaviour for validation. The test is only enabled on ppc64 systems with radix MMU support and If radix is not active, the trigger is skipped and reported as XFAIL. Co-developed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Reviewed-by: Michael Ellerman <mpe@kernel.org> Link: https://patch.msgid.link/85c9b59217bcecb3c7af52e9d5b175266771d7de.1778975974.git.sayalip@linux.ibm.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Sayali Patil
|
3f21a4426e |
lkdtm/powerpc: add isync after slbmte to enforce SLB update ordering
The slbmte instruction modifies the Segment Lookaside Buffer, but without a context synchronizing operation the CPU is not guaranteed to observe the updated SLB state for subsequent instructions. This can result in use of stale translation state when memory is accessed immediately after SLB modifications. Add isync after each slbmte in the PPC_SLB_MULTIHIT test to ensure proper ordering of SLB updates before subsequent memory accesses. This aligns with Power ISA context synchronization requirements for changes in address translation state and improves the reliability of SLB multihit injection tests in hash MMU mode. Suggested-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Reviewed-by: Michael Ellerman <mpe@kernel.org> Link: https://patch.msgid.link/2f8d430962a96a7498903b994f081deee4a4d97a.1778975974.git.sayalip@linux.ibm.com Signed-off-by: Kees Cook <kees@kernel.org> |
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Ard Biesheuvel
|
a34039981e |
lkdtm: Add case to provoke a crash in EFI runtime services
Add a lkdtm test case that triggers a fault during the execution of a EFI runtime service by passing a read-only variable as a by-ref argument that the firmware is supposed to update. This is useful for testing the graceful handling of faults/exception in EFI platform firmware, which is implemented on x86 and arm64. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260501170156.2833364-2-ardb+git@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Uwe Kleine-König (The Capable Hub)
|
b4c0149768 |
eeprom: at24: Use named initializers for arrays of i2c_device_data
While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. This patch doesn't modify the compiled array, only its representation in source form benefits. The former was confirmed with x86 and arm64 builds. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20260519093806.1567914-2-u.kleine-koenig@baylibre.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> |
||
Krzysztof Kozlowski
|
5808ef063b |
memstick: Constify the driver id_table
Just like all other driver structures, the id_table should never be modified by core subsystem parts. Constify this member and actual data structures for increased code safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
||
Svyatoslav Ryhel
|
9c48294623 |
misc: Remove old APDS990x driver
The APDS990x driver in misc lacks DeviceTree support, and no mainline pre-DT board files configured this device using apds990x_platform_data. This driver belongs to a legacy group of ambient light sensor drivers in drivers/misc/ that predates the migration to DT and the standard IIO ABI. Since the Avago APDS9900/9901 ALS/Proximity sensor is now supported by the tsl2772 IIO driver and there are no active users in the kernel tree, remove this old implementation. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> |
||
|
Linus Torvalds
|
cb4eb6771c |
Char/Misc/IIO/and others driver updates for 7.1-rc1
Here is the char/misc/iio and other smaller driver subsystem updates for
7.1-rc1. Lots of stuff in here, all tiny, but relevant for the
different drivers they touch. Major points in here is:
- the usual large set of new IIO drivers and updates for that
subsystem (the large majority of this diffstat)
- lots of comedi driver updates and bugfixes
- coresight driver updates
- interconnect driver updates and additions
- mei driver updates
- binder (both rust and C versions) updates and fixes
- lots of other smaller driver subsystem updates and additions
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc / IIO / and others driver updates from Greg KH:
"Here is the char/misc/iio and other smaller driver subsystem updates
for 7.1-rc1. Lots of stuff in here, all tiny, but relevant for the
different drivers they touch. Major points in here is:
- the usual large set of new IIO drivers and updates for that
subsystem (the large majority of this diffstat)
- lots of comedi driver updates and bugfixes
- coresight driver updates
- interconnect driver updates and additions
- mei driver updates
- binder (both rust and C versions) updates and fixes
- lots of other smaller driver subsystem updates and additions
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (405 commits)
coresight: tpdm: fix invalid MMIO access issue
mei: me: add nova lake point H DID
mei: lb: add late binding version 2
mei: bus: add mei_cldev_uuid
w1: ds2490: drop redundant device reference
bus: mhi: host: pci_generic: Add Telit FE912C04 modem support
mei: csc: wake device while reading firmware status
mei: csc: support controller with separate PCI device
mei: convert PCI error to common errno
mei: trace: print return value of pci_cfg_read
mei: me: move trace into firmware status read
mei: fix idle print specifiers
mei: me: use PCI_DEVICE_DATA macro
sonypi: Convert ACPI driver to a platform one
misc: apds990x: fix all kernel-doc warnings
most: usb: Use kzalloc_objs for endpoint address array
hpet: Convert ACPI driver to a platform one
misc: vmw_vmci: Fix spelling mistakes in comments
parport: Remove completed item from to-do list
char: remove unnecessary module_init/exit functions
...
|
||
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Linus Torvalds
|
40286d6379 |
pci-v7.1-changes
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Merge tag 'pci-v7.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Allow TLP Processing Hints to be enabled for RCiEPs (George Abraham
P)
- Enable AtomicOps only if we know the Root Port supports them (Gerd
Bayer)
- Don't enable AtomicOps for RCiEPs since none of them need Atomic
Ops and we can't tell whether the Root Complex would support them
(Gerd Bayer)
- Leave Precision Time Measurement disabled until a driver enables it
to avoid PCIe errors (Mika Westerberg)
- Make pci_set_vga_state() fail if bridge doesn't support VGA
routing, i.e., PCI_BRIDGE_CTL_VGA is not writable, and return
errors to vga_get() callers including userspace via
/dev/vga_arbiter (Simon Richter)
- Validate max-link-speed from DT in j721e, brcmstb, mediatek-gen3,
rzg3s drivers (where the actual controller constraints are known),
and remove validation from the generic OF DT accessor (Hans Zhang)
- Remove pc110pad driver (no longer useful after 486 CPU support
removed) and no_pci_devices() (pc110pad was the last user) (Dmitry
Torokhov, Heiner Kallweit)
Resource management:
- Prevent assigning space to unimplemented bridge windows; previously
we mistakenly assumed prefetchable window existed and assigned
space and put a BAR there (Ahmed Naseef)
- Avoid shrinking bridge windows to fit in the initial Root Port
window; fixes one problem with devices with large BARs connected
via switches, e.g., Thunderbolt (Ilpo Järvinen)
- Pass full extent of empty space, not just the aligned space, to
resource_alignf callback so free space before the requested
alignment can be used (Ilpo Järvinen)
- Place small resources before larger ones for better utilization of
address space (Ilpo Järvinen)
- Fix alignment calculation for resource size larger than align,
e.g., bridge windows larger than the 1MB required alignment (Ilpo
Järvinen)
Reset:
- Update slot handling so all ARI functions are treated as being in
the same slot. They're all reset by Secondary Bus Reset, but
previously drivers of ARI functions that appeared to be on a
non-zero device weren't notified and fatal hardware errors could
result (Keith Busch)
- Make sysfs reset_subordinate hotplug safe to avoid spurious hotplug
events (Keith Busch)
- Hide Secondary Bus Reset ('bus') from sysfs reset_methods if masked
by CXL because it has no effect (Vidya Sagar)
- Avoid FLR for AMD NPU device, where it causes the device to hang
(Lizhi Hou)
Error handling:
- Clear only error bits in PCIe Device Status to avoid accidentally
clearing Emergency Power Reduction Detected (Shuai Xue)
- Check for AER errors even in devices without drivers (Lukas Wunner)
- Initialize ratelimit info so DPC and EDR paths log AER error
information (Kuppuswamy Sathyanarayanan)
Power control:
- Add UPD720201/UPD720202 USB 3.0 xHCI Host Controller .compatible so
generic pwrctrl driver can control it (Neil Armstrong)
Hotplug:
- Set LED_HW_PLUGGABLE for NPEM hotplug-capable ports so LED core
doesn't complain when setting brightness fails because the endpoint
is gone (Richard Cheng)
Peer-to-peer DMA:
- Allow wildcards in list of host bridges that support peer-to-peer
DMA between hierarchy domains and add all Google SoCs (Jacob
Moroni)
Endpoint framework:
- Advertise dynamic inbound mapping support in pci-epf-test and
update host pci_endpoint_test to skip doorbell testing if not
advertised by endpoint (Koichiro Den)
- Return 0, not remaining timeout, when MHI eDMA ops complete so
mhi_ep_ring_add_element() doesn't interpret non-zero as failure
(Daniel Hodges)
- Remove vntb and ntb duplicate resource teardown that leads to oops
when .allow_link() fails or .drop_link() is called (Koichiro Den)
- Disable vntb delayed work before clearing BAR mappings and
doorbells to avoid oops caused by doing the work after resources
have been torn down (Koichiro Den)
- Add a way to describe reserved subregions within BARs, e.g.,
platform-owned fixed register windows, and use it for the RK3588
BAR4 DMA ctrl window (Koichiro Den)
- Add BAR_DISABLED for BARs that will never be available to an EPF
driver, and change some BAR_RESERVED annotations to BAR_DISABLED
(Niklas Cassel)
- Add NTB .get_dma_dev() callback for cases where DMA API requires a
different device, e.g., vNTB devices (Koichiro Den)
- Add reserved region types for MSI-X Table and PBA so Endpoint
controllers can them as describe hardware-owned regions in a
BAR_RESERVED BAR (Manikanta Maddireddy)
- Make Tegra194/234 BAR0 programmable and remove 1MB size limit
(Manikanta Maddireddy)
- Expose Tegra BAR2 (MSI-X) and BAR4 (DMA) as 64-bit BAR_RESERVED
(Manikanta Maddireddy)
- Add Tegra194 and Tegra234 device table entries to pci_endpoint_test
(Manikanta Maddireddy)
- Skip the BAR subrange selftest if there are not enough inbound
window resources to run the test (Christian Bruel)
New native PCIe controller drivers:
- Add DT binding and driver for Andes QiLai SoC PCIe host controller
(Randolph Lin)
- Add DT binding and driver for ESWIN PCIe Root Complex (Senchuan
Zhang)
Baikal T-1 PCIe controller driver:
- Remove driver since it never quite became usable (Andy Shevchenko)
Cadence PCIe controller driver:
- Implement byte/word config reads with dword (32-bit) reads because
some Cadence controllers don't support sub-dword accesses (Aksh
Garg)
CIX Sky1 PCIe controller driver:
- Add 'power-domains' to DT binding for SCMI power domain (Gary Yang)
Freescale i.MX6 PCIe controller driver:
- Add i.MX94 and i.MX943 to fsl,imx6q-pcie-ep DT binding (Richard
Zhu)
- Delay instead of polling for L2/L3 Ready after PME_Turn_off when
suspending i.MX6SX because LTSSM registers are inaccessible
(Richard Zhu)
- Separate PERST# assertion (for resetting endpoints) from core reset
(for resetting the RC itself) to prepare for new DTs with PERST#
GPIO in per-Root Port nodes (Sherry Sun)
- Retain Root Port MSI capability on i.MX7D, i.MX8MM, and i.MX8MQ so
MSI from downstream devices will work (Richard Zhu)
- Fix i.MX95 reference clock source selection when internal refclk is
used (Franz Schnyder)
Freescale Layerscape PCIe controller driver:
- Allow building as a removable module (Sascha Hauer)
MediaTek PCIe Gen3 controller driver:
- Use dev_err_probe() to simplify error paths and make deferred probe
messages visible in /sys/kernel/debug/devices_deferred (Chen-Yu
Tsai)
- Power off device if setup fails (Chen-Yu Tsai)
- Integrate new pwrctrl API to enable power control for WiFi/BT
adapters on mainboard or in PCIe or M.2 slots (Chen-Yu Tsai)
NVIDIA Tegra194 PCIe controller driver:
- Poll less aggressively and non-atomically for PME_TO_Ack during
transition to L2 (Vidya Sagar)
- Disable LTSSM after transition to Detect on surprise link down to
stop toggling between Polling and Detect (Manikanta Maddireddy)
- Don't force the device into the D0 state before L2 when suspending
or shutting down the controller (Vidya Sagar)
- Disable PERST# IRQ only in Endpoint mode because it's not
registered in Root Port mode (Manikanta Maddireddy)
- Handle 'nvidia,refclk-select' as optional (Vidya Sagar)
- Disable direct speed change in Endpoint mode so link speed change
is controlled by the host (Vidya Sagar)
- Set LTR values before link up to avoid bogus LTR messages with 0
latency (Vidya Sagar)
- Allow system suspend when the Endpoint link is down (Vidya Sagar)
- Use DWC IP core version, not Tegra custom values, to avoid DWC core
version check warnings (Manikanta Maddireddy)
- Apply ECRC workaround to devices based on DesignWare 5.00a as well
as 4.90a (Manikanta Maddireddy)
- Disable PM Substate L1.2 in Endpoint mode to work around Tegra234
erratum (Vidya Sagar)
- Delay post-PERST# cleanup until core is powered on to avoid CBB
timeout (Manikanta Maddireddy)
- Assert CLKREQ# so switches that forward it to their downstream side
can bring up those links successfully (Vidya Sagar)
- Calibrate pipe to UPHY for Endpoint mode to reset stale PLL state
from any previous bad link state (Vidya Sagar)
- Remove IRQF_ONESHOT flag from Endpoint interrupt registration so
DMA driver and Endpoint controller driver can share the interrupt
line (Vidya Sagar)
- Enable DMA interrupt to support DMA in both Root Port and Endpoint
modes (Vidya Sagar)
- Enable hardware link retraining after link goes down in Endpoint
mode (Vidya Sagar)
- Add DT binding and driver support for core clock monitoring (Vidya
Sagar)
Qualcomm PCIe controller driver:
- Advertise 'Hot-Plug Capable' and set 'No Command Completed Support'
since Qcom Root Ports support hotplug events like DL_Up/Down and
can accept writes to Slot Control without delays between writes
(Krishna Chaitanya Chundru)
Renesas R-Car PCIe controller driver:
- Mark Endpoint BAR0 and BAR2 as Resizable (Koichiro Den)
- Reduce EPC BAR alignment requirement to 4K (Koichiro Den)
Renesas RZ/G3S PCIe controller driver:
- Add RZ/G3E to DT binding and to driver (John Madieu)
- Assert (not deassert) resets in probe error path (John Madieu)
- Assert resets in suspend path in reverse order they were deasserted
during probe (John Madieu)
- Rework inbound window algorithm to prevent mapping more than
intended region and enforce alignment on size, to prepare for
RZ/G3E support (John Madieu)
Rockchip DesignWare PCIe controller driver:
- Add tracepoints for PCIe controller LTSSM transitions and link rate
changes (Shawn Lin)
- Trace LTSSM events collected by the dw-rockchip debug FIFO (Shawn
Lin)
SOPHGO PCIe controller driver:
- Disable ASPM L0s and L1 on Sophgo 2042 PCIe Root Ports that
advertise support for them (Yao Zi)
Synopsys DesignWare PCIe controller driver:
- Continue with system suspend even if an Endpoint doesn't respond
with PME_TO_Ack message (Manivannan Sadhasivam)
- Set Endpoint MSI-X Table Size in the correct function of a
multi-function device when configuring MSI-X, not in Function 0
(Aksh Garg)
- Set Max Link Width and Max Link Speed for all functions of a
multi-function device, not just Function 0 (Aksh Garg)
- Expose PCIe event counters in groups 5-7 in debugfs (Hans Zhang)
Miscellaneous:
- Warn only once about invalid ACS kernel parameter format (Richard
Cheng)
- Suppress FW_BUG warning when writing sysfs 'numa_node' with the
current value (Li RongQing)
- Drop redundant 'depends on PCI' from Kconfig (Julian Braha)"
* tag 'pci-v7.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (165 commits)
PCI/P2PDMA: Add Google SoCs to the P2P DMA host bridge list
PCI/P2PDMA: Allow wildcard Device IDs in host bridge list
PCI: sg2042: Avoid L0s and L1 on Sophgo 2042 PCIe Root Ports
PCI: cadence: Add flags for disabling ASPM capability for broken Root Ports
PCI: tegra194: Add core monitor clock support
dt-bindings: PCI: tegra194: Add monitor clock support
PCI: tegra194: Enable hardware hot reset mode in Endpoint mode
PCI: tegra194: Enable DMA interrupt
PCI: tegra194: Remove IRQF_ONESHOT flag during Endpoint interrupt registration
PCI: tegra194: Calibrate pipe to UPHY for Endpoint mode
PCI: tegra194: Assert CLKREQ# explicitly by default
PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on
PCI: tegra194: Disable L1.2 capability of Tegra234 EP
PCI: dwc: Apply ECRC workaround to DesignWare 5.00a as well
PCI: tegra194: Use DWC IP core version
PCI: tegra194: Free up Endpoint resources during remove()
PCI: tegra194: Allow system suspend when the Endpoint link is not up
PCI: tegra194: Set LTR message request before PCIe link up in Endpoint mode
PCI: tegra194: Disable direct speed change for Endpoint mode
PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select"
...
|
||
|
Linus Torvalds
|
334fbe734e |
mm.git review status for linus..mm-stable
Everything: Total patches: 368 Reviews/patch: 1.56 Reviewed rate: 74% Excluding DAMON: Total patches: 316 Reviews/patch: 1.77 Reviewed rate: 81% Excluding DAMON and zram: Total patches: 306 Reviews/patch: 1.81 Reviewed rate: 82% Excluding DAMON, zram and maple_tree: Total patches: 276 Reviews/patch: 2.01 Reviewed rate: 91% Significant patch series in this merge: - The 30 patch series "maple_tree: Replace big node with maple copy" from Liam Howlett is mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - The 12 patch series "mm, swap: swap table phase III: remove swap_map" from Kairui Song offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - The 2 patch series "mm: memfd_luo: preserve file seals" from Pratyush Yadav adds file seal preservation to LUO's memfd code. - The 2 patch series "mm: zswap: add per-memcg stat for incompressible pages" from Jiayuan Chen adds additional userspace stats reportng to zswap. - The 4 patch series "arch, mm: consolidate empty_zero_page" from Mike Rapoport implements some cleanups for our handling of ZERO_PAGE() and zero_pfn. - The 2 patch series "mm/kmemleak: Improve scan_should_stop() implementation" from Zhongqiu Han provides an robustness improvement and some cleanups in the kmemleak code. - The 4 patch series "Improve khugepaged scan logic" from Vernon Yang "improves the khugepaged scan logic and reduces CPU consumption by prioritizing scanning tasks that access memory frequently". - The 2 patch series "Make KHO Stateless" from Jason Miu simplifies Kexec Handover by "transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel" - The 3 patch series "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" from Thomas Ballasi and Steven Rostedt enhances vmscan's tracepointing. - The 5 patch series "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" from Catalin Marinas is a cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation. - The 2 patch series "Fix KASAN support for KHO restored vmalloc regions" from Pasha Tatashin fixes a WARN() which can be emitted the KHO restores a vmalloc area. - The 4 patch series "mm: Remove stray references to pagevec" from Tal Zussman provides several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago. - The 17 patch series "mm: Eliminate fake head pages from vmemmap optimization" from Kiryl Shutsemau simplifies the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page. - The 2 patch series "mm/damon/core: improve DAMOS quota efficiency for core layer filters" from SeongJae Park improves two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used. - The 3 patch series "mm/damon: strictly respect min_nr_regions" from SeongJae Park improves DAMON usability by extending the treatment of the min_nr_regions user-settable parameter. - The 3 patch series "mm/page_alloc: pcp locking cleanup" from Vlastimil Babka is a proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ennsed. - The 16 patch series "mm: cleanups around unmapping / zapping" from David Hildenbrand implements "a bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions". - The 6 patch series "support batched checking of the young flag for MGLRU" from Baolin Wang supports batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64. - The 5 patch series "memcg: obj stock and slab stat caching cleanups" from Johannes Weiner provides memcg cleanup and robustness improvements. - The 5 patch series "Allow order zero pages in page reporting" from Yuvraj Sakshith enhances page_reporting's free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - The 6 patch series "mm: vma flag tweaks" from Lorenzo Stoakes is cleanup work following from the recent conversion of the VMA flags to a bitmap. - The 10 patch series "mm/damon: add optional debugging-purpose sanity checks" from SeongJae Park adds some more developer-facing debug checks into DAMON core. - The 2 patch series "mm/damon: test and document power-of-2 min_region_sz requirement" from SeongJae Park adds an additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling. - The 3 patch series "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" from SeongJae Park fixes a hard-to-hit time overflow issue in DAMON core. - The 7 patch series "mm/damon: improve/fixup/update ratio calculation, test and documentation" from SeongJae Park is a "batch of misc/minor improvements and fixups" for DAMON. - The 4 patch series "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" from David Hildenbrand fixes a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - The 6 patch series "zram: recompression cleanups and tweaks" from Sergey Senozhatsky provides "a somewhat random mix of fixups, recompression cleanups and improvements" in the zram code. - The 11 patch series "mm/damon: support multiple goal-based quota tuning algorithms" from SeongJae Park extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select. - The 4 patch series "mm: thp: reduce unnecessary start_stop_khugepaged()" from Breno Leitao fixes the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged. - The 3 patch series "mm: improve map count checks" from Lorenzo Stoakes provides some cleanups and slight fixes in the mremap, mmap and vma code. - The 5 patch series "mm/damon: support addr_unit on default monitoring targets for modules" from SeongJae Park extends the use of DAMON core's addr_unit tunable. - The 5 patch series "mm: khugepaged cleanups and mTHP prerequisites" from Nico Pache provides cleanups in the khugepaged and is a base for Nico's planned khugepaged mTHP support. - The 15 patch series "mm: memory hot(un)plug and SPARSEMEM cleanups" from David Hildenbrand implements code movement and cleanups in the memhotplug and sparsemem code. - The 2 patch series "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" from David Hildenbrand rationalizes some memhotplug Kconfig support. - The 6 patch series "change young flag check functions to return bool" from Baolin Wang is "a cleanup patchset to change all young flag check functions to return bool". - The 3 patch series "mm/damon/sysfs: fix memory leak and NULL dereference issues" from Josh Law and SeongJae Park fixes a few potential DAMON bugs. - The 25 patch series "mm/vma: convert vm_flags_t to vma_flags_t in vma code" from "converts a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it". Mainly in the vma code. - The 21 patch series "mm: expand mmap_prepare functionality and usage" from Lorenzo Stoakes "expands the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time". Cleanups, documentation, extension of mmap_prepare into filesystem drivers. - The 13 patch series "mm/huge_memory: refactor zap_huge_pmd()" from Lorenzo Stoakes simplifies and cleans up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCad3HDQAKCRDdBJ7gKXxA jrUQAPwNhPk5nPSxnyxjAeQtOBHqgCdnICeEismLajPKd9aYRgEA0s2XAu3tSUYi GrBnWImHG3s4ePQxVcPCegWTsOUrXgQ= =1Q7o -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "maple_tree: Replace big node with maple copy" (Liam Howlett) Mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - "mm, swap: swap table phase III: remove swap_map" (Kairui Song) Offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - "mm: memfd_luo: preserve file seals" (Pratyush Yadav) File seal preservation to LUO's memfd code - "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan Chen) Additional userspace stats reportng to zswap - "arch, mm: consolidate empty_zero_page" (Mike Rapoport) Some cleanups for our handling of ZERO_PAGE() and zero_pfn - "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu Han) A robustness improvement and some cleanups in the kmemleak code - "Improve khugepaged scan logic" (Vernon Yang) Improve khugepaged scan logic and reduce CPU consumption by prioritizing scanning tasks that access memory frequently - "Make KHO Stateless" (Jason Miu) Simplify Kexec Handover by transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel - "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas Ballasi and Steven Rostedt) Enhance vmscan's tracepointing - "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" (Catalin Marinas) Cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation - "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin) Fix a WARN() which can be emitted the KHO restores a vmalloc area - "mm: Remove stray references to pagevec" (Tal Zussman) Several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago - "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl Shutsemau) Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page - "mm/damon/core: improve DAMOS quota efficiency for core layer filters" (SeongJae Park) Improve two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used - "mm/damon: strictly respect min_nr_regions" (SeongJae Park) Improve DAMON usability by extending the treatment of the min_nr_regions user-settable parameter - "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka) The proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ensued - "mm: cleanups around unmapping / zapping" (David Hildenbrand) A bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions - "support batched checking of the young flag for MGLRU" (Baolin Wang) Batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64 - "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner) memcg cleanup and robustness improvements - "Allow order zero pages in page reporting" (Yuvraj Sakshith) Enhance free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - "mm: vma flag tweaks" (Lorenzo Stoakes) Cleanup work following from the recent conversion of the VMA flags to a bitmap - "mm/damon: add optional debugging-purpose sanity checks" (SeongJae Park) Add some more developer-facing debug checks into DAMON core - "mm/damon: test and document power-of-2 min_region_sz requirement" (SeongJae Park) An additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling - "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" (SeongJae Park) Fix a hard-to-hit time overflow issue in DAMON core - "mm/damon: improve/fixup/update ratio calculation, test and documentation" (SeongJae Park) A batch of misc/minor improvements and fixups for DAMON - "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David Hildenbrand) Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - "zram: recompression cleanups and tweaks" (Sergey Senozhatsky) A somewhat random mix of fixups, recompression cleanups and improvements in the zram code - "mm/damon: support multiple goal-based quota tuning algorithms" (SeongJae Park) Extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select - "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao) Fix the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged - "mm: improve map count checks" (Lorenzo Stoakes) Provide some cleanups and slight fixes in the mremap, mmap and vma code - "mm/damon: support addr_unit on default monitoring targets for modules" (SeongJae Park) Extend the use of DAMON core's addr_unit tunable - "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache) Cleanups to khugepaged and is a base for Nico's planned khugepaged mTHP support - "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand) Code movement and cleanups in the memhotplug and sparsemem code - "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" (David Hildenbrand) Rationalize some memhotplug Kconfig support - "change young flag check functions to return bool" (Baolin Wang) Cleanups to change all young flag check functions to return bool - "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh Law and SeongJae Park) Fix a few potential DAMON bugs - "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo Stoakes) Convert a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it. Mainly in the vma code. - "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes) Expand the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time. Cleanups, documentation, extension of mmap_prepare into filesystem drivers - "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes) Simplify and clean up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. * tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits) mm: fix deferred split queue races during migration mm/khugepaged: fix issue with tracking lock mm/huge_memory: add and use has_deposited_pgtable() mm/huge_memory: add and use normal_or_softleaf_folio_pmd() mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio() mm/huge_memory: separate out the folio part of zap_huge_pmd() mm/huge_memory: use mm instead of tlb->mm mm/huge_memory: remove unnecessary sanity checks mm/huge_memory: deduplicate zap deposited table call mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE() mm/huge_memory: add a common exit path to zap_huge_pmd() mm/huge_memory: handle buggy PMD entry in zap_huge_pmd() mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc mm/huge: avoid big else branch in zap_huge_pmd() mm/huge_memory: simplify vma_is_specal_huge() mm: on remap assert that input range within the proposed VMA mm: add mmap_action_map_kernel_pages[_full]() uio: replace deprecated mmap hook with mmap_prepare in uio_info drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare mm: allow handling of stacked mmap_prepare hooks in more drivers ... |
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Linus Torvalds
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hardening updates for v7.1-rc1
- randomize_kstack: Improve implementation across arches (Ryan Roberts) - lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test - refcount: Remove unused __signed_wrap function annotations -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCad16PwAKCRA2KwveOeQk u7crAP4qz8gXCjes76KsZm/YQS8PtOG5JroAVu5Oa4ohw0RfaQD+K/XLow1plcNF 4Bi8zSuv2ifcLysh9qEAbx5+wcHijgo= =woB3 -----END PGP SIGNATURE----- Merge tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: - randomize_kstack: Improve implementation across arches (Ryan Roberts) - lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test - refcount: Remove unused __signed_wrap function annotations * tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test refcount: Remove unused __signed_wrap function annotations randomize_kstack: Unify random source across arches randomize_kstack: Maintain kstack_offset per task |