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Author SHA1 Message Date
Linus Torvalds
65989db7f8 New ext4 features: 
* Add support so tune2fs can modify/update the superblock using an
     ioctl, without needing write access to the block device.
   * Add support for 32-bit reserved uid's and gid's.
 
 Bug fixes:
 
   * Fix potential warnings and other failures caused by corrupted / fuzzed
     file systems.
   * Fail unaligned direct I/O write with EINVAL instead of silently
     falling back to buffered I/O
   * Correectly handle fsmap queries for metadata mappings
   * Avoid journal stalls caused by writeback throttling
   * Add some missing GFP_NOFAIL flags to avoid potential deadlocks
     under extremem memory pressure
 
 Cleanups:
 
   * Remove obsolete EXT3 Kconfigs
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Merge tag 'ext4_for_linus-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "New ext4 features:

   - Add support so tune2fs can modify/update the superblock using an
     ioctl, without needing write access to the block device

   - Add support for 32-bit reserved uid's and gid's

  Bug fixes:

   - Fix potential warnings and other failures caused by corrupted /
     fuzzed file systems

   - Fail unaligned direct I/O write with EINVAL instead of silently
     falling back to buffered I/O

   - Correectly handle fsmap queries for metadata mappings

   - Avoid journal stalls caused by writeback throttling

   - Add some missing GFP_NOFAIL flags to avoid potential deadlocks
     under extremem memory pressure

  Cleanups:

   - Remove obsolete EXT3 Kconfigs"

* tag 'ext4_for_linus-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix checks for orphan inodes
  ext4: validate ea_ino and size in check_xattrs
  ext4: guard against EA inode refcount underflow in xattr update
  ext4: implemet new ioctls to set and get superblock parameters
  ext4: add support for 32-bit default reserved uid and gid values
  ext4: avoid potential buffer over-read in parse_apply_sb_mount_options()
  ext4: fix an off-by-one issue during moving extents
  ext4: increase i_disksize to offset + len in ext4_update_disksize_before_punch()
  ext4: verify orphan file size is not too big
  ext4: fail unaligned direct IO write with EINVAL
  ext4: correctly handle queries for metadata mappings
  ext4: increase IO priority of fastcommit
  ext4: remove obsolete EXT3 config options
  jbd2: increase IO priority of checkpoint
  ext4: fix potential null deref in ext4_mb_init()
  ext4: add ext4_sb_bread_nofail() helper function for ext4_free_branches()
  ext4: replace min/max nesting with clamp()
  fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock
 2025-10-03 13:47:10 -07:00
Linus Torvalds
6238729bfc fuse update for 6.18 
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Merge tag 'fuse-update-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

Pull fuse updates from Miklos Szeredi:

 - Extend copy_file_range interface to be fully 64bit capable (Miklos)

 - Add selftest for fusectl (Chen Linxuan)

 - Move fuse docs into a separate directory (Bagas Sanjaya)

 - Allow fuse to enter freezable state in some cases (Sergey
   Senozhatsky)

 - Clean up writeback accounting after removing tmp page copies (Joanne)

 - Optimize virtiofs request handling (Li RongQing)

 - Add synchronous FUSE_INIT support (Miklos)

 - Allow server to request prune of unused inodes (Miklos)

 - Fix deadlock with AIO/sync release (Darrick)

 - Add some prep patches for block/iomap support (Darrick)

 - Misc fixes and cleanups

* tag 'fuse-update-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (26 commits)
  fuse: move CREATE_TRACE_POINTS to a separate file
  fuse: move the backing file idr and code into a new source file
  fuse: enable FUSE_SYNCFS for all fuseblk servers
  fuse: capture the unique id of fuse commands being sent
  fuse: fix livelock in synchronous file put from fuseblk workers
  mm: fix lockdep issues in writeback handling
  fuse: add prune notification
  fuse: remove redundant calls to fuse_copy_finish() in fuse_notify()
  fuse: fix possibly missing fuse_copy_finish() call in fuse_notify()
  fuse: remove FUSE_NOTIFY_CODE_MAX from <uapi/linux/fuse.h>
  fuse: remove fuse_readpages_end() null mapping check
  fuse: fix references to fuse.rst -> fuse/fuse.rst
  fuse: allow synchronous FUSE_INIT
  fuse: zero initialize inode private data
  fuse: remove unused 'inode' parameter in fuse_passthrough_open
  virtio_fs: fix the hash table using in virtio_fs_enqueue_req()
  mm: remove BDI_CAP_WRITEBACK_ACCT
  fuse: use default writeback accounting
  virtio_fs: Remove redundant spinlock in virtio_fs_request_complete()
  fuse: remove unneeded offset assignment when filling write pages
  ...
 2025-10-03 12:48:18 -07:00
Linus Torvalds
e406d57be7 Patch series in this pull request: 
- The 3 patch series "ida: Remove the ida_simple_xxx() API" from
   Christophe Jaillet completes the removal of this legacy IDR API.
 
 - The 9 patch series "panic: introduce panic status function family"
   from Jinchao Wang provides a number of cleanups to the panic code and
   its various helpers, which were rather ad-hoc and scattered all over the
   place.
 
 - The 5 patch series "tools/delaytop: implement real-time keyboard
   interaction support" from Fan Yu adds a few nice user-facing usability
   changes to the delaytop monitoring tool.
 
 - The 3 patch series "efi: Fix EFI boot with kexec handover (KHO)" from
   Evangelos Petrongonas fixes a panic which was happening with the
   combination of EFI and KHO.
 
 - The 2 patch series "Squashfs: performance improvement and a sanity
   check" from Phillip Lougher teaches squashfs's lseek() about
   SEEK_DATA/SEEK_HOLE.  A mere 150x speedup was measured for a well-chosen
   microbenchmark.
 
 - Plus another 50-odd singleton patches all over the place.
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Merge tag 'mm-nonmm-stable-2025-10-02-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "ida: Remove the ida_simple_xxx() API" from Christophe Jaillet
   completes the removal of this legacy IDR API

 - "panic: introduce panic status function family" from Jinchao Wang
   provides a number of cleanups to the panic code and its various
   helpers, which were rather ad-hoc and scattered all over the place

 - "tools/delaytop: implement real-time keyboard interaction support"
   from Fan Yu adds a few nice user-facing usability changes to the
   delaytop monitoring tool

 - "efi: Fix EFI boot with kexec handover (KHO)" from Evangelos
   Petrongonas fixes a panic which was happening with the combination of
   EFI and KHO

 - "Squashfs: performance improvement and a sanity check" from Phillip
   Lougher teaches squashfs's lseek() about SEEK_DATA/SEEK_HOLE. A mere
   150x speedup was measured for a well-chosen microbenchmark

 - plus another 50-odd singleton patches all over the place

* tag 'mm-nonmm-stable-2025-10-02-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (75 commits)
  Squashfs: reject negative file sizes in squashfs_read_inode()
  kallsyms: use kmalloc_array() instead of kmalloc()
  MAINTAINERS: update Sibi Sankar's email address
  Squashfs: add SEEK_DATA/SEEK_HOLE support
  Squashfs: add additional inode sanity checking
  lib/genalloc: fix device leak in of_gen_pool_get()
  panic: remove CONFIG_PANIC_ON_OOPS_VALUE
  ocfs2: fix double free in user_cluster_connect()
  checkpatch: suppress strscpy warnings for userspace tools
  cramfs: fix incorrect physical page address calculation
  kernel: prevent prctl(PR_SET_PDEATHSIG) from racing with parent process exit
  Squashfs: fix uninit-value in squashfs_get_parent
  kho: only fill kimage if KHO is finalized
  ocfs2: avoid extra calls to strlen() after ocfs2_sprintf_system_inode_name()
  kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths
  sched/task.h: fix the wrong comment on task_lock() nesting with tasklist_lock
  coccinelle: platform_no_drv_owner: handle also built-in drivers
  coccinelle: of_table: handle SPI device ID tables
  lib/decompress: use designated initializers for struct compress_format
  efi: support booting with kexec handover (KHO)
  ...
 2025-10-02 18:44:54 -07:00
Linus Torvalds
8804d970fa Summary of significant series in this pull request: 
- The 3 patch series "mm, swap: improve cluster scan strategy" from
   Kairui Song improves performance and reduces the failure rate of swap
   cluster allocation.
 
 - The 4 patch series "support large align and nid in Rust allocators"
   from Vitaly Wool permits Rust allocators to set NUMA node and large
   alignment when perforning slub and vmalloc reallocs.
 
 - The 2 patch series "mm/damon/vaddr: support stat-purpose DAMOS" from
   Yueyang Pan extend DAMOS_STAT's handling of the DAMON operations sets
   for virtual address spaces for ops-level DAMOS filters.
 
 - The 3 patch series "execute PROCMAP_QUERY ioctl under per-vma lock"
   from Suren Baghdasaryan reduces mmap_lock contention during reads of
   /proc/pid/maps.
 
 - The 2 patch series "mm/mincore: minor clean up for swap cache
   checking" from Kairui Song performs some cleanup in the swap code.
 
 - The 11 patch series "mm: vm_normal_page*() improvements" from David
   Hildenbrand provides code cleanup in the pagemap code.
 
 - The 5 patch series "add persistent huge zero folio support" from
   Pankaj Raghav provides a block layer speedup by optionalls making the
   huge_zero_pagepersistent, instead of releasing it when its refcount
   falls to zero.
 
 - The 3 patch series "kho: fixes and cleanups" from Mike Rapoport adds a
   few touchups to the recently added Kexec Handover feature.
 
 - The 10 patch series "mm: make mm->flags a bitmap and 64-bit on all
   arches" from Lorenzo Stoakes turns mm_struct.flags into a bitmap.  To
   end the constant struggle with space shortage on 32-bit conflicting with
   64-bit's needs.
 
 - The 2 patch series "mm/swapfile.c and swap.h cleanup" from Chris Li
   cleans up some swap code.
 
 - The 7 patch series "selftests/mm: Fix false positives and skip
   unsupported tests" from Donet Tom fixes a few things in our selftests
   code.
 
 - The 7 patch series "prctl: extend PR_SET_THP_DISABLE to only provide
   THPs when advised" from David Hildenbrand "allows individual processes
   to opt-out of THP=always into THP=madvise, without affecting other
   workloads on the system".
 
   It's a long story - the [1/N] changelog spells out the considerations.
 
 - The 11 patch series "Add and use memdesc_flags_t" from Matthew Wilcox
   gets us started on the memdesc project.  Please see
   https://kernelnewbies.org/MatthewWilcox/Memdescs and
   https://blogs.oracle.com/linux/post/introducing-memdesc.
 
 - The 3 patch series "Tiny optimization for large read operations" from
   Chi Zhiling improves the efficiency of the pagecache read path.
 
 - The 5 patch series "Better split_huge_page_test result check" from Zi
   Yan improves our folio splitting selftest code.
 
 - The 2 patch series "test that rmap behaves as expected" from Wei Yang
   adds some rmap selftests.
 
 - The 3 patch series "remove write_cache_pages()" from Christoph Hellwig
   removes that function and converts its two remaining callers.
 
 - The 2 patch series "selftests/mm: uffd-stress fixes" from Dev Jain
   fixes some UFFD selftests issues.
 
 - The 3 patch series "introduce kernel file mapped folios" from Boris
   Burkov introduces the concept of "kernel file pages".  Using these
   permits btrfs to account its metadata pages to the root cgroup, rather
   than to the cgroups of random inappropriate tasks.
 
 - The 2 patch series "mm/pageblock: improve readability of some
   pageblock handling" from Wei Yang provides some readability improvements
   to the page allocator code.
 
 - The 11 patch series "mm/damon: support ARM32 with LPAE" from SeongJae
   Park teaches DAMON to understand arm32 highmem.
 
 - The 4 patch series "tools: testing: Use existing atomic.h for
   vma/maple tests" from Brendan Jackman performs some code cleanups and
   deduplication under tools/testing/.
 
 - The 2 patch series "maple_tree: Fix testing for 32bit compiles" from
   Liam Howlett fixes a couple of 32-bit issues in
   tools/testing/radix-tree.c.
 
 - The 2 patch series "kasan: unify kasan_enabled() and remove
   arch-specific implementations" from Sabyrzhan Tasbolatov moves KASAN
   arch-specific initialization code into a common arch-neutral
   implementation.
 
 - The 3 patch series "mm: remove zpool" from Johannes Weiner removes
   zspool - an indirection layer which now only redirects to a single thing
   (zsmalloc).
 
 - The 2 patch series "mm: task_stack: Stack handling cleanups" from
   Pasha Tatashin makes a couple of cleanups in the fork code.
 
 - The 37 patch series "mm: remove nth_page()" from David Hildenbrand
   makes rather a lot of adjustments at various nth_page() callsites,
   eventually permitting the removal of that undesirable helper function.
 
 - The 2 patch series "introduce kasan.write_only option in hw-tags" from
   Yeoreum Yun creates a KASAN read-only mode for ARM, using that
   architecture's memory tagging feature.  It is felt that a read-only mode
   KASAN is suitable for use in production systems rather than debug-only.
 
 - The 3 patch series "mm: hugetlb: cleanup hugetlb folio allocation"
   from Kefeng Wang does some tidying in the hugetlb folio allocation code.
 
 - The 12 patch series "mm: establish const-correctness for pointer
   parameters" from Max Kellermann makes quite a number of the MM API
   functions more accurate about the constness of their arguments.  This
   was getting in the way of subsystems (in this case CEPH) when they
   attempt to improving their own const/non-const accuracy.
 
 - The 7 patch series "Cleanup free_pages() misuse" from Vishal Moola
   fixes a number of code sites which were confused over when to use
   free_pages() vs __free_pages().
 
 - The 3 patch series "Add Rust abstraction for Maple Trees" from Alice
   Ryhl makes the mapletree code accessible to Rust.  Required by nouveau
   and by its forthcoming successor: the new Rust Nova driver.
 
 - The 2 patch series "selftests/mm: split_huge_page_test:
   split_pte_mapped_thp improvements" from David Hildenbrand adds a fix and
   some cleanups to the thp selftesting code.
 
 - The 14 patch series "mm, swap: introduce swap table as swap cache
   (phase I)" from Chris Li and Kairui Song is the first step along the
   path to implementing "swap tables" - a new approach to swap allocation
   and state tracking which is expected to yield speed and space
   improvements.  This patchset itself yields a 5-20% performance benefit
   in some situations.
 
 - The 3 patch series "Some ptdesc cleanups" from Matthew Wilcox utilizes
   the new memdesc layer to clean up the ptdesc code a little.
 
 - The 3 patch series "Fix va_high_addr_switch.sh test failure" from
   Chunyu Hu fixes some issues in our 5-level pagetable selftesting code.
 
 - The 2 patch series "Minor fixes for memory allocation profiling" from
   Suren Baghdasaryan addresses a couple of minor issues in relatively new
   memory allocation profiling feature.
 
 - The 3 patch series "Small cleanups" from Matthew Wilcox has a few
   cleanups in preparation for more memdesc work.
 
 - The 2 patch series "mm/damon: add addr_unit for DAMON_LRU_SORT and
   DAMON_RECLAIM" from Quanmin Yan makes some changes to DAMON in
   furtherance of supporting arm highmem.
 
 - The 2 patch series "selftests/mm: Add -Wunreachable-code and fix
   warnings" from Muhammad Anjum adds that compiler check to selftests code
   and fixes the fallout, by removing dead code.
 
 - The 10 patch series "Improvements to Victim Process Thawing and OOM
   Reaper Traversal Order" from zhongjinji makes a number of improvements
   in the OOM killer: mainly thawing a more appropriate group of victim
   threads so they can release resources.
 
 - The 5 patch series "mm/damon: misc fixups and improvements for 6.18"
   from SeongJae Park is a bunch of small and unrelated fixups for DAMON.
 
 - The 7 patch series "mm/damon: define and use DAMON initialization
   check function" from SeongJae Park implement reliability and
   maintainability improvements to a recently-added bug fix.
 
 - The 2 patch series "mm/damon/stat: expose auto-tuned intervals and
   non-idle ages" from SeongJae Park provides additional transparency to
   userspace clients of the DAMON_STAT information.
 
 - The 2 patch series "Expand scope of khugepaged anonymous collapse"
   from Dev Jain removes some constraints on khubepaged's collapsing of
   anon VMAs.  It also increases the success rate of MADV_COLLAPSE against
   an anon vma.
 
 - The 2 patch series "mm: do not assume file == vma->vm_file in
   compat_vma_mmap_prepare()" from Lorenzo Stoakes moves us further towards
   removal of file_operations.mmap().  This patchset concentrates upon
   clearing up the treatment of stacked filesystems.
 
 - The 6 patch series "mm: Improve mlock tracking for large folios" from
   Kiryl Shutsemau provides some fixes and improvements to mlock's tracking
   of large folios.  /proc/meminfo's "Mlocked" field became more accurate.
 
 - The 2 patch series "mm/ksm: Fix incorrect accounting of KSM counters
   during fork" from Donet Tom fixes several user-visible KSM stats
   inaccuracies across forks and adds selftest code to verify these
   counters.
 
 - The 2 patch series "mm_slot: fix the usage of mm_slot_entry" from Wei
   Yang addresses some potential but presently benign issues in KSM's
   mm_slot handling.
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Merge tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - "mm, swap: improve cluster scan strategy" from Kairui Song improves
   performance and reduces the failure rate of swap cluster allocation

 - "support large align and nid in Rust allocators" from Vitaly Wool
   permits Rust allocators to set NUMA node and large alignment when
   perforning slub and vmalloc reallocs

 - "mm/damon/vaddr: support stat-purpose DAMOS" from Yueyang Pan extend
   DAMOS_STAT's handling of the DAMON operations sets for virtual
   address spaces for ops-level DAMOS filters

 - "execute PROCMAP_QUERY ioctl under per-vma lock" from Suren
   Baghdasaryan reduces mmap_lock contention during reads of
   /proc/pid/maps

 - "mm/mincore: minor clean up for swap cache checking" from Kairui Song
   performs some cleanup in the swap code

 - "mm: vm_normal_page*() improvements" from David Hildenbrand provides
   code cleanup in the pagemap code

 - "add persistent huge zero folio support" from Pankaj Raghav provides
   a block layer speedup by optionalls making the
   huge_zero_pagepersistent, instead of releasing it when its refcount
   falls to zero

 - "kho: fixes and cleanups" from Mike Rapoport adds a few touchups to
   the recently added Kexec Handover feature

 - "mm: make mm->flags a bitmap and 64-bit on all arches" from Lorenzo
   Stoakes turns mm_struct.flags into a bitmap. To end the constant
   struggle with space shortage on 32-bit conflicting with 64-bit's
   needs

 - "mm/swapfile.c and swap.h cleanup" from Chris Li cleans up some swap
   code

 - "selftests/mm: Fix false positives and skip unsupported tests" from
   Donet Tom fixes a few things in our selftests code

 - "prctl: extend PR_SET_THP_DISABLE to only provide THPs when advised"
   from David Hildenbrand "allows individual processes to opt-out of
   THP=always into THP=madvise, without affecting other workloads on the
   system".

   It's a long story - the [1/N] changelog spells out the considerations

 - "Add and use memdesc_flags_t" from Matthew Wilcox gets us started on
   the memdesc project. Please see

      https://kernelnewbies.org/MatthewWilcox/Memdescs and
      https://blogs.oracle.com/linux/post/introducing-memdesc

 - "Tiny optimization for large read operations" from Chi Zhiling
   improves the efficiency of the pagecache read path

 - "Better split_huge_page_test result check" from Zi Yan improves our
   folio splitting selftest code

 - "test that rmap behaves as expected" from Wei Yang adds some rmap
   selftests

 - "remove write_cache_pages()" from Christoph Hellwig removes that
   function and converts its two remaining callers

 - "selftests/mm: uffd-stress fixes" from Dev Jain fixes some UFFD
   selftests issues

 - "introduce kernel file mapped folios" from Boris Burkov introduces
   the concept of "kernel file pages". Using these permits btrfs to
   account its metadata pages to the root cgroup, rather than to the
   cgroups of random inappropriate tasks

 - "mm/pageblock: improve readability of some pageblock handling" from
   Wei Yang provides some readability improvements to the page allocator
   code

 - "mm/damon: support ARM32 with LPAE" from SeongJae Park teaches DAMON
   to understand arm32 highmem

 - "tools: testing: Use existing atomic.h for vma/maple tests" from
   Brendan Jackman performs some code cleanups and deduplication under
   tools/testing/

 - "maple_tree: Fix testing for 32bit compiles" from Liam Howlett fixes
   a couple of 32-bit issues in tools/testing/radix-tree.c

 - "kasan: unify kasan_enabled() and remove arch-specific
   implementations" from Sabyrzhan Tasbolatov moves KASAN arch-specific
   initialization code into a common arch-neutral implementation

 - "mm: remove zpool" from Johannes Weiner removes zspool - an
   indirection layer which now only redirects to a single thing
   (zsmalloc)

 - "mm: task_stack: Stack handling cleanups" from Pasha Tatashin makes a
   couple of cleanups in the fork code

 - "mm: remove nth_page()" from David Hildenbrand makes rather a lot of
   adjustments at various nth_page() callsites, eventually permitting
   the removal of that undesirable helper function

 - "introduce kasan.write_only option in hw-tags" from Yeoreum Yun
   creates a KASAN read-only mode for ARM, using that architecture's
   memory tagging feature. It is felt that a read-only mode KASAN is
   suitable for use in production systems rather than debug-only

 - "mm: hugetlb: cleanup hugetlb folio allocation" from Kefeng Wang does
   some tidying in the hugetlb folio allocation code

 - "mm: establish const-correctness for pointer parameters" from Max
   Kellermann makes quite a number of the MM API functions more accurate
   about the constness of their arguments. This was getting in the way
   of subsystems (in this case CEPH) when they attempt to improving
   their own const/non-const accuracy

 - "Cleanup free_pages() misuse" from Vishal Moola fixes a number of
   code sites which were confused over when to use free_pages() vs
   __free_pages()

 - "Add Rust abstraction for Maple Trees" from Alice Ryhl makes the
   mapletree code accessible to Rust. Required by nouveau and by its
   forthcoming successor: the new Rust Nova driver

 - "selftests/mm: split_huge_page_test: split_pte_mapped_thp
   improvements" from David Hildenbrand adds a fix and some cleanups to
   the thp selftesting code

 - "mm, swap: introduce swap table as swap cache (phase I)" from Chris
   Li and Kairui Song is the first step along the path to implementing
   "swap tables" - a new approach to swap allocation and state tracking
   which is expected to yield speed and space improvements. This
   patchset itself yields a 5-20% performance benefit in some situations

 - "Some ptdesc cleanups" from Matthew Wilcox utilizes the new memdesc
   layer to clean up the ptdesc code a little

 - "Fix va_high_addr_switch.sh test failure" from Chunyu Hu fixes some
   issues in our 5-level pagetable selftesting code

 - "Minor fixes for memory allocation profiling" from Suren Baghdasaryan
   addresses a couple of minor issues in relatively new memory
   allocation profiling feature

 - "Small cleanups" from Matthew Wilcox has a few cleanups in
   preparation for more memdesc work

 - "mm/damon: add addr_unit for DAMON_LRU_SORT and DAMON_RECLAIM" from
   Quanmin Yan makes some changes to DAMON in furtherance of supporting
   arm highmem

 - "selftests/mm: Add -Wunreachable-code and fix warnings" from Muhammad
   Anjum adds that compiler check to selftests code and fixes the
   fallout, by removing dead code

 - "Improvements to Victim Process Thawing and OOM Reaper Traversal
   Order" from zhongjinji makes a number of improvements in the OOM
   killer: mainly thawing a more appropriate group of victim threads so
   they can release resources

 - "mm/damon: misc fixups and improvements for 6.18" from SeongJae Park
   is a bunch of small and unrelated fixups for DAMON

 - "mm/damon: define and use DAMON initialization check function" from
   SeongJae Park implement reliability and maintainability improvements
   to a recently-added bug fix

 - "mm/damon/stat: expose auto-tuned intervals and non-idle ages" from
   SeongJae Park provides additional transparency to userspace clients
   of the DAMON_STAT information

 - "Expand scope of khugepaged anonymous collapse" from Dev Jain removes
   some constraints on khubepaged's collapsing of anon VMAs. It also
   increases the success rate of MADV_COLLAPSE against an anon vma

 - "mm: do not assume file == vma->vm_file in compat_vma_mmap_prepare()"
   from Lorenzo Stoakes moves us further towards removal of
   file_operations.mmap(). This patchset concentrates upon clearing up
   the treatment of stacked filesystems

 - "mm: Improve mlock tracking for large folios" from Kiryl Shutsemau
   provides some fixes and improvements to mlock's tracking of large
   folios. /proc/meminfo's "Mlocked" field became more accurate

 - "mm/ksm: Fix incorrect accounting of KSM counters during fork" from
   Donet Tom fixes several user-visible KSM stats inaccuracies across
   forks and adds selftest code to verify these counters

 - "mm_slot: fix the usage of mm_slot_entry" from Wei Yang addresses
   some potential but presently benign issues in KSM's mm_slot handling

* tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (372 commits)
  mm: swap: check for stable address space before operating on the VMA
  mm: convert folio_page() back to a macro
  mm/khugepaged: use start_addr/addr for improved readability
  hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list
  alloc_tag: fix boot failure due to NULL pointer dereference
  mm: silence data-race in update_hiwater_rss
  mm/memory-failure: don't select MEMORY_ISOLATION
  mm/khugepaged: remove definition of struct khugepaged_mm_slot
  mm/ksm: get mm_slot by mm_slot_entry() when slot is !NULL
  hugetlb: increase number of reserving hugepages via cmdline
  selftests/mm: add fork inheritance test for ksm_merging_pages counter
  mm/ksm: fix incorrect KSM counter handling in mm_struct during fork
  drivers/base/node: fix double free in register_one_node()
  mm: remove PMD alignment constraint in execmem_vmalloc()
  mm/memory_hotplug: fix typo 'esecially' -> 'especially'
  mm/rmap: improve mlock tracking for large folios
  mm/filemap: map entire large folio faultaround
  mm/fault: try to map the entire file folio in finish_fault()
  mm/rmap: mlock large folios in try_to_unmap_one()
  mm/rmap: fix a mlock race condition in folio_referenced_one()
  ...
 2025-10-02 18:18:33 -07:00
Linus Torvalds
07fdad3a93 Networking changes for 6.18. 
Core & protocols
 ----------------
 
  - Improve drop account scalability on NUMA hosts for RAW and UDP sockets
    and the backlog, almost doubling the Pps capacity under DoS.
 
  - Optimize the UDP RX performance under stress, reducing contention,
    revisiting the binary layout of the involved data structs and
    implementing NUMA-aware locking. This improves UDP RX performance by
    an additional 50%, even more under extreme conditions.
 
  - Add support for PSP encryption of TCP connections; this mechanism has
    some similarities with IPsec and TLS, but offers superior HW offloads
    capabilities.
 
  - Ongoing work to support Accurate ECN for TCP. AccECN allows more than
    one congestion notification signal per RTT and is a building block for
    Low Latency, Low Loss, and Scalable Throughput (L4S).
 
  - Reorganize the TCP socket binary layout for data locality, reducing
    the number of touched cachelines in the fastpath.
 
  - Refactor skb deferral free to better scale on large multi-NUMA hosts,
    this improves TCP and UDP RX performances significantly on such HW.
 
  - Increase the default socket memory buffer limits from 256K to 4M to
    better fit modern link speeds.
 
  - Improve handling of setups with a large number of nexthop, making dump
    operating scaling linearly and avoiding unneeded synchronize_rcu() on
    delete.
 
  - Improve bridge handling of VLAN FDB, storing a single entry per bridge
    instead of one entry per port; this makes the dump order of magnitude
    faster on large switches.
 
  - Restore IP ID correctly for encapsulated packets at GSO segmentation
    time, allowing GRO to merge packets in more scenarios.
 
  - Improve netfilter matching performance on large sets.
 
  - Improve MPTCP receive path performance by leveraging recently
    introduced core infrastructure (skb deferral free) and adopting recent
    TCP autotuning changes.
 
  - Allow bridges to redirect to a backup port when the bridge port is
    administratively down.
 
  - Introduce MPTCP 'laminar' endpoint that con be used only once per
    connection and simplify common MPTCP setups.
 
  - Add RCU safety to dst->dev, closing a lot of possible races.
 
  - A significant crypto library API for SCTP, MPTCP and IPv6 SR, reducing
    code duplication.
 
  - Supports pulling data from an skb frag into the linear area of an XDP
    buffer.
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Generate netlink documentation from YAML using an integrated
    YAML parser.
 
 Driver API
 ----------
 
  - Support using IPv6 Flow Label in Rx hash computation and RSS queue
    selection.
 
  - Introduce API for fetching the DMA device for a given queue, allowing
    TCP zerocopy RX on more H/W setups.
 
  - Make XDP helpers compatible with unreadable memory, allowing more
    easily building DevMem-enabled drivers with a unified XDP/skbs
    datapath.
 
  - Add a new dedicated ethtool callback enabling drivers to provide the
    number of RX rings directly, improving efficiency and clarity in RX
    ring queries and RSS configuration.
 
  - Introduce a burst period for the health reporter, allowing better
    handling of multiple errors due to the same root cause.
 
  - Support for DPLL phase offset exponential moving average, controlling
    the average smoothing factor.
 
 Device drivers
 --------------
 
  - Add a new Huawei driver for 3rd gen NIC (hinic3).
 
  - Add a new SpacemiT driver for K1 ethernet MAC.
 
  - Add a generic abstraction for shared memory communication devices
    (dibps)
 
  - Ethernet high-speed NICs:
    - nVidia/Mellanox:
      - Use multiple per-queue doorbell, to avoid MMIO contention issues
      - support adjacent functions, allowing them to delegate their
        SR-IOV VFs to sibling PFs
      - support RSS for IPSec offload
      - support exposing raw cycle counters in PTP and mlx5
      - support for disabling host PFs.
    - Intel (100G, ice, idpf):
      - ice: support for SRIOV VFs over an Active-Active link aggregate
      - ice: support for firmware logging via debugfs
      - ice: support for Earliest TxTime First (ETF) hardware offload
      - idpf: support basic XDP functionalities and XSk
    - Broadcom (bnxt):
      - support Hyper-V VF ID
      - dynamic SRIOV resource allocations for RoCE
    - Meta (fbnic):
      - support queue API, zero-copy Rx and Tx
      - support basic XDP functionalities
      - devlink health support for FW crashes and OTP mem corruptions
      - expand hardware stats coverage to FEC, PHY, and Pause
    - Wangxun:
      - support ethtool coalesce options
      - support for multiple RSS contexts
 
  - Ethernet virtual:
    - Macsec:
      - replace custom netlink attribute checks with policy-level checks
    - Bonding:
      - support aggregator selection based on port priority
    - Microsoft vNIC:
      - use page pool fragments for RX buffers instead of full pages to
        improve memory efficiency
 
  - Ethernet NICs consumer, and embedded:
    - Qualcomm: support Ethernet function for IPQ9574 SoC
    - Airoha: implement wlan offloading via NPU
    - Freescale
      - enetc: add NETC timer PTP driver and add PTP support
      - fec: enable the Jumbo frame support for i.MX8QM
    - Renesas (R-Car S4): support HW offloading for layer 2 switching
      - support for RZ/{T2H, N2H} SoCs
    - Cadence (macb): support TAPRIO traffic scheduling
    - TI:
      - support for Gigabit ICSS ethernet SoC (icssm-prueth)
    - Synopsys (stmmac): a lot of cleanups
 
  - Ethernet PHYs:
    - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
      driver
    - Support bcm63268 GPHY power control
    - Support for Micrel lan8842 PHY and PTP
    - Support for Aquantia AQR412 and AQR115
 
  - CAN:
    - a large CAN-XL preparation work
    - reorganize raw_sock and uniqframe struct to minimize memory usage
    - rcar_canfd: update the CAN-FD handling
 
  - WiFi:
    - extended Neighbor Awareness Networking (NAN) support
    - S1G channel representation cleanup
    - improve S1G support
 
  - WiFi drivers:
    - Intel (iwlwifi):
      - major refactor and cleanup
    - Broadcom (brcm80211):
      - support for AP isolation
    - RealTek (rtw88/89) rtw88/89:
      - preparation work for RTL8922DE support
    - MediaTek (mt76):
      - HW restart improvements
      - MLO support
    - Qualcomm/Atheros (ath10k_
      - GTK rekey fixes
 
  - Bluetooth drivers:
    - btusb: support for several new IDs for MT7925
    - btintel: support for BlazarIW core
    - btintel_pcie: support for _suspend() / _resume()
    - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core & protocols:

   - Improve drop account scalability on NUMA hosts for RAW and UDP
     sockets and the backlog, almost doubling the Pps capacity under DoS

   - Optimize the UDP RX performance under stress, reducing contention,
     revisiting the binary layout of the involved data structs and
     implementing NUMA-aware locking. This improves UDP RX performance
     by an additional 50%, even more under extreme conditions

   - Add support for PSP encryption of TCP connections; this mechanism
     has some similarities with IPsec and TLS, but offers superior HW
     offloads capabilities

   - Ongoing work to support Accurate ECN for TCP. AccECN allows more
     than one congestion notification signal per RTT and is a building
     block for Low Latency, Low Loss, and Scalable Throughput (L4S)

   - Reorganize the TCP socket binary layout for data locality, reducing
     the number of touched cachelines in the fastpath

   - Refactor skb deferral free to better scale on large multi-NUMA
     hosts, this improves TCP and UDP RX performances significantly on
     such HW

   - Increase the default socket memory buffer limits from 256K to 4M to
     better fit modern link speeds

   - Improve handling of setups with a large number of nexthop, making
     dump operating scaling linearly and avoiding unneeded
     synchronize_rcu() on delete

   - Improve bridge handling of VLAN FDB, storing a single entry per
     bridge instead of one entry per port; this makes the dump order of
     magnitude faster on large switches

   - Restore IP ID correctly for encapsulated packets at GSO
     segmentation time, allowing GRO to merge packets in more scenarios

   - Improve netfilter matching performance on large sets

   - Improve MPTCP receive path performance by leveraging recently
     introduced core infrastructure (skb deferral free) and adopting
     recent TCP autotuning changes

   - Allow bridges to redirect to a backup port when the bridge port is
     administratively down

   - Introduce MPTCP 'laminar' endpoint that con be used only once per
     connection and simplify common MPTCP setups

   - Add RCU safety to dst->dev, closing a lot of possible races

   - A significant crypto library API for SCTP, MPTCP and IPv6 SR,
     reducing code duplication

   - Supports pulling data from an skb frag into the linear area of an
     XDP buffer

  Things we sprinkled into general kernel code:

   - Generate netlink documentation from YAML using an integrated YAML
     parser

  Driver API:

   - Support using IPv6 Flow Label in Rx hash computation and RSS queue
     selection

   - Introduce API for fetching the DMA device for a given queue,
     allowing TCP zerocopy RX on more H/W setups

   - Make XDP helpers compatible with unreadable memory, allowing more
     easily building DevMem-enabled drivers with a unified XDP/skbs
     datapath

   - Add a new dedicated ethtool callback enabling drivers to provide
     the number of RX rings directly, improving efficiency and clarity
     in RX ring queries and RSS configuration

   - Introduce a burst period for the health reporter, allowing better
     handling of multiple errors due to the same root cause

   - Support for DPLL phase offset exponential moving average,
     controlling the average smoothing factor

  Device drivers:

   - Add a new Huawei driver for 3rd gen NIC (hinic3)

   - Add a new SpacemiT driver for K1 ethernet MAC

   - Add a generic abstraction for shared memory communication
     devices (dibps)

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - Use multiple per-queue doorbell, to avoid MMIO contention
           issues
         - support adjacent functions, allowing them to delegate their
           SR-IOV VFs to sibling PFs
         - support RSS for IPSec offload
         - support exposing raw cycle counters in PTP and mlx5
         - support for disabling host PFs.
      - Intel (100G, ice, idpf):
         - ice: support for SRIOV VFs over an Active-Active link
           aggregate
         - ice: support for firmware logging via debugfs
         - ice: support for Earliest TxTime First (ETF) hardware offload
         - idpf: support basic XDP functionalities and XSk
      - Broadcom (bnxt):
         - support Hyper-V VF ID
         - dynamic SRIOV resource allocations for RoCE
      - Meta (fbnic):
         - support queue API, zero-copy Rx and Tx
         - support basic XDP functionalities
         - devlink health support for FW crashes and OTP mem corruptions
         - expand hardware stats coverage to FEC, PHY, and Pause
      - Wangxun:
         - support ethtool coalesce options
         - support for multiple RSS contexts

   - Ethernet virtual:
      - Macsec:
         - replace custom netlink attribute checks with policy-level
           checks
      - Bonding:
         - support aggregator selection based on port priority
      - Microsoft vNIC:
         - use page pool fragments for RX buffers instead of full pages
           to improve memory efficiency

   - Ethernet NICs consumer, and embedded:
      - Qualcomm: support Ethernet function for IPQ9574 SoC
      - Airoha: implement wlan offloading via NPU
      - Freescale
         - enetc: add NETC timer PTP driver and add PTP support
         - fec: enable the Jumbo frame support for i.MX8QM
      - Renesas (R-Car S4):
         - support HW offloading for layer 2 switching
         - support for RZ/{T2H, N2H} SoCs
      - Cadence (macb): support TAPRIO traffic scheduling
      - TI:
         - support for Gigabit ICSS ethernet SoC (icssm-prueth)
      - Synopsys (stmmac): a lot of cleanups

   - Ethernet PHYs:
      - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
        driver
      - Support bcm63268 GPHY power control
      - Support for Micrel lan8842 PHY and PTP
      - Support for Aquantia AQR412 and AQR115

   - CAN:
      - a large CAN-XL preparation work
      - reorganize raw_sock and uniqframe struct to minimize memory
        usage
      - rcar_canfd: update the CAN-FD handling

   - WiFi:
      - extended Neighbor Awareness Networking (NAN) support
      - S1G channel representation cleanup
      - improve S1G support

   - WiFi drivers:
      - Intel (iwlwifi):
         - major refactor and cleanup
      - Broadcom (brcm80211):
         - support for AP isolation
      - RealTek (rtw88/89) rtw88/89:
         - preparation work for RTL8922DE support
      - MediaTek (mt76):
         - HW restart improvements
         - MLO support
      - Qualcomm/Atheros (ath10k):
         - GTK rekey fixes

   - Bluetooth drivers:
      - btusb: support for several new IDs for MT7925
      - btintel: support for BlazarIW core
      - btintel_pcie: support for _suspend() / _resume()
      - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs"

* tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1536 commits)
  net: stmmac: Add support for Allwinner A523 GMAC200
  dt-bindings: net: sun8i-emac: Add A523 GMAC200 compatible
  Revert "Documentation: net: add flow control guide and document ethtool API"
  octeontx2-pf: fix bitmap leak
  octeontx2-vf: fix bitmap leak
  net/mlx5e: Use extack in set rxfh callback
  net/mlx5e: Introduce mlx5e_rss_params for RSS configuration
  net/mlx5e: Introduce mlx5e_rss_init_params
  net/mlx5e: Remove unused mdev param from RSS indir init
  net/mlx5: Improve QoS error messages with actual depth values
  net/mlx5e: Prevent entering switchdev mode with inconsistent netns
  net/mlx5: HWS, Generalize complex matchers
  net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
  selftests/net: add tcp_port_share to .gitignore
  Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set"
  net: add NUMA awareness to skb_attempt_defer_free()
  net: use llist for sd->defer_list
  net: make softnet_data.defer_count an atomic
  selftests: drv-net: psp: add tests for destroying devices
  selftests: drv-net: psp: add test for auto-adjusting TCP MSS
  ...
 2025-10-02 15:17:01 -07:00
Linus Torvalds
f79e772258 [GIT PULL for v6.18] media updates 
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Merge tag 'media/v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - Added a new V4L2 clock helper

 - New camera sensor drivers

 - iris: Enable H.264/H.265 encoder support and fixes in iris driver
   common code

 - camss: add support for new SoC flavors

 - venus: add new SoC support

 - tc358743: support more infoframe types

 - Various fixes, driver improvements and cleanups

* tag 'media/v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (439 commits)
  media: venus: pm_helpers: add fallback for the opp-table
  media: qcom: camss: vfe: Fix BPL alignment for QCM2290
  media: tuner: xc5000: Fix use-after-free in xc5000_release
  media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe
  media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove
  media: vsp1: Export missing vsp1_isp_free_buffer symbol
  media: renesas: vsp1: Convert to SYSTEM_SLEEP/RUNTIME_PM_OPS()
  media: renesas: ceu: Convert to RUNTIME_PM_OPS()
  media: renesas: fdp1: Convert to RUNTIME_PM_OPS()
  media: renesas: rcar-vin: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
  media: renesas: rcar_drif: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
  media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID
  media: uvcvideo: Support UVC_CROSXU_CONTROL_IQ_PROFILE
  media: uvcvideo: Run uvc_ctrl_init_ctrl for all controls
  media: uvcvideo: Shorten the transfer size non compliance message
  media: uvcvideo: Do not re-reference dev->udev
  media: uvcvideo: Use intf instead of udev for printks
  media: uvcvideo: Move video_device under video_queue
  media: uvcvideo: Drop stream->mutex
  media: uvcvideo: Move MSXU_CONTROL_METADATA definition to header
  ...
 2025-10-02 13:13:26 -07:00
Linus Torvalds
5832d26433 for-6.18/io_uring-20250929 
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Merge tag 'for-6.18/io_uring-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull io_uring updates from Jens Axboe:

 - Store ring provided buffers locally for the users, rather than stuff
   them into struct io_kiocb.

   These types of buffers must always be fully consumed or recycled in
   the current context, and leaving them in struct io_kiocb is hence not
   a good ideas as that struct has a vastly different life time.

   Basically just an architecture cleanup that can help prevent issues
   with ring provided buffers in the future.

 - Support for mixed CQE sizes in the same ring.

   Before this change, a CQ ring either used the default 16b CQEs, or it
   was setup with 32b CQE using IORING_SETUP_CQE32. For use cases where
   a few 32b CQEs were needed, this caused everything else to use big
   CQEs. This is wasteful both in terms of memory usage, but also memory
   bandwidth for the posted CQEs.

   With IORING_SETUP_CQE_MIXED, applications may use request types that
   post both normal 16b and big 32b CQEs on the same ring.

 - Add helpers for async data management, to make it harder for opcode
   handlers to mess it up.

 - Add support for multishot for uring_cmd, which ublk can use. This
   helps improve efficiency, by providing a persistent request type that
   can trigger multiple CQEs.

 - Add initial support for ring feature querying.

   We had basic support for probe operations, but the API isn't great.
   Rather than expand that, add support for QUERY which is easily
   expandable and can cover a lot more cases than the existing probe
   support. This will help applications get a better idea of what
   operations are supported on a given host.

 - zcrx improvements from Pavel:
        - Improve refill entry alignment for better caching
        - Various cleanups, especially around deduplicating normal
          memory vs dmabuf setup.
        - Generalisation of the niov size (Patch 12). It's still hard
          coded to PAGE_SIZE on init, but will let the user to specify
          the rx buffer length on setup.
        - Syscall / synchronous bufer return. It'll be used as a slow
          fallback path for returning buffers when the refill queue is
          full. Useful for tolerating slight queue size misconfiguration
          or with inconsistent load.
        - Accounting more memory to cgroups.
        - Additional independent cleanups that will also be useful for
          mutli-area support.

 - Various fixes and cleanups

* tag 'for-6.18/io_uring-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (68 commits)
  io_uring/cmd: drop unused res2 param from io_uring_cmd_done()
  io_uring: fix nvme's 32b cqes on mixed cq
  io_uring/query: cap number of queries
  io_uring/query: prevent infinite loops
  io_uring/zcrx: account niov arrays to cgroup
  io_uring/zcrx: allow synchronous buffer return
  io_uring/zcrx: introduce io_parse_rqe()
  io_uring/zcrx: don't adjust free cache space
  io_uring/zcrx: use guards for the refill lock
  io_uring/zcrx: reduce netmem scope in refill
  io_uring/zcrx: protect netdev with pp_lock
  io_uring/zcrx: rename dma lock
  io_uring/zcrx: make niov size variable
  io_uring/zcrx: set sgt for umem area
  io_uring/zcrx: remove dmabuf_offset
  io_uring/zcrx: deduplicate area mapping
  io_uring/zcrx: pass ifq to io_zcrx_alloc_fallback()
  io_uring/zcrx: check all niovs filled with dma addresses
  io_uring/zcrx: move area reg checks into io_import_area
  io_uring/zcrx: don't pass slot to io_zcrx_create_area
  ...
 2025-10-02 09:56:23 -07:00
Linus Torvalds
38057e3236 soc: driver updates for 6.18 
Lots of platform specific updates for Qualcomm SoCs, including a
 new TEE subsystem driver for the Qualcomm QTEE firmware interface.
 
 Added support for the Apple A11 SoC in drivers that are shared with the
 M1/M2 series, among more updates for those.
 
 Smaller platform specific driver updates for Renesas, ASpeed, Broadcom,
 Nvidia, Mediatek, Amlogic, TI, Allwinner, and Freescale SoCs.
 
 Driver updates in the cache controller, memory controller and reset
 controller subsystems.
 
 SCMI firmware updates to add more features and improve robustness.
 This includes support for having multiple SCMI providers in a single
 system.
 
 TEE subsystem support for protected DMA-bufs, allowing hardware to
 access memory areas that managed by the kernel but remain inaccessible
 from the CPU in EL1/EL0.
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Merge tag 'soc-drivers-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC driver updates from Arnd Bergmann:
 "Lots of platform specific updates for Qualcomm SoCs, including a new
  TEE subsystem driver for the Qualcomm QTEE firmware interface.

  Added support for the Apple A11 SoC in drivers that are shared with
  the M1/M2 series, among more updates for those.

  Smaller platform specific driver updates for Renesas, ASpeed,
  Broadcom, Nvidia, Mediatek, Amlogic, TI, Allwinner, and Freescale
  SoCs.

  Driver updates in the cache controller, memory controller and reset
  controller subsystems.

  SCMI firmware updates to add more features and improve robustness.
  This includes support for having multiple SCMI providers in a single
  system.

  TEE subsystem support for protected DMA-bufs, allowing hardware to
  access memory areas that managed by the kernel but remain inaccessible
  from the CPU in EL1/EL0"

* tag 'soc-drivers-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (139 commits)
  soc/fsl/qbman: Use for_each_online_cpu() instead of for_each_cpu()
  soc: fsl: qe: Drop legacy-of-mm-gpiochip.h header from GPIO driver
  soc: fsl: qe: Change GPIO driver to a proper platform driver
  tee: fix register_shm_helper()
  pmdomain: apple: Add "apple,t8103-pmgr-pwrstate"
  dt-bindings: spmi: Add Apple A11 and T2 compatible
  serial: qcom-geni: Load UART qup Firmware from linux side
  spi: geni-qcom: Load spi qup Firmware from linux side
  i2c: qcom-geni: Load i2c qup Firmware from linux side
  soc: qcom: geni-se: Add support to load QUP SE Firmware via Linux subsystem
  soc: qcom: geni-se: Cleanup register defines and update copyright
  dt-bindings: qcom: se-common: Add QUP Peripheral-specific properties for I2C, SPI, and SERIAL bus
  Documentation: tee: Add Qualcomm TEE driver
  tee: qcom: enable TEE_IOC_SHM_ALLOC ioctl
  tee: qcom: add primordial object
  tee: add Qualcomm TEE driver
  tee: increase TEE_MAX_ARG_SIZE to 4096
  tee: add TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF
  tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF
  tee: add close_context to TEE driver operation
  ...
 2025-10-01 17:32:51 -07:00
Linus Torvalds
ea1c6c5925 spi: Updates for v6.18 
There's one big core change in this release, Jonas Gorski has addressed
 the issues with multiple chip selects which makes things more robust and
 stable.  Otherwise there's quite a bit of driver work, as well as some
 new drivers several existing drivers have had quite a bit of work done
 on them.
 
 Possibly the most interesting thing is the VirtIO driver, this is
 apparently useful for some automotive applications which want to keep as
 small and robust a host system as they can, moving less critical
 functionality into guests.
 
  - James Clark has done some substantial updates on the Freescale DSPI
    driver, porting in code from the BSP and building onm top of that to
    fix some bugs and increase performance.
  - Jonas Gorski has fixed the issues with handling multple chip selects,
    making things more robust and scalable.
  - Support for higher performance modes in the NXP FSPI driver from
    Haibo Chen.
  - Removal of the obsolete S3C2443 driver, the underlying SoC support
    has been removed from the kernel.
  - Support for Amlogic AL113L2, Atmel SAMA7D65 and SAM9x7 and for VirtIO
    controllers.
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Merge tag 'spi-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "There's one big core change in this release, Jonas Gorski has
  addressed the issues with multiple chip selects which makes things
  more robust and stable. Otherwise there's quite a bit of driver work,
  as well as some new drivers several existing drivers have had quite a
  bit of work done on them.

  Possibly the most interesting thing is the VirtIO driver, this is
  apparently useful for some automotive applications which want to keep
  as small and robust a host system as they can, moving less critical
  functionality into guests.

   - James Clark has done some substantial updates on the Freescale DSPI
     driver, porting in code from the BSP and building onm top of that
     to fix some bugs and increase performance

   - Jonas Gorski has fixed the issues with handling multple chip
     selects, making things more robust and scalable

   - Support for higher performance modes in the NXP FSPI driver from
     Haibo Chen

   - Removal of the obsolete S3C2443 driver, the underlying SoC support
     has been removed from the kernel

   - Support for Amlogic AL113L2, Atmel SAMA7D65 and SAM9x7 and for
     VirtIO controllers"

* tag 'spi-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (74 commits)
  spi: ljca: Remove Wentong's e-mail address
  spi: rename SPI_CS_CNT_MAX => SPI_DEVICE_CS_CNT_MAX
  spi: reduce device chip select limit again
  spi: don't check spi_controller::num_chipselect when parsing a dt device
  spi: drop check for validity of device chip selects
  spi: move unused device CS initialization to __spi_add_device()
  spi: keep track of number of chipselects in spi_device
  spi: fix return code when spi device has too many chipselects
  SPI: Add virtio SPI driver
  virtio-spi: Add virtio-spi.h
  virtio: Add ID for virtio SPI
  spi: rpc-if: Add resume support for RZ/G3E
  spi: rpc-if: Drop deprecated SIMPLE_DEV_PM_OPS
  spi: spi-qpic-snand: simplify clock handling by using devm_clk_get_enabled()
  spi: spi-nxp-fspi: Add OCT-DTR mode support
  spi: spi-nxp-fspi: add the support for sample data from DQS pad
  spi: spi-nxp-fspi: Add the DDR LUT command support
  spi: spi-nxp-fspi: set back to dll override mode when clock rate < 100MHz
  spi: spi-nxp-fspi: extract function nxp_fspi_dll_override()
  spi: atmel-quadspi: Add support for sama7d65 QSPI
  ...
 2025-10-01 11:46:31 -07:00
Linus Torvalds
989253cc46 hwmon updates for v6.18-rc1 
* New drivers
 
   - Driver for Kontron SMARC-sAM67
 
   - Driver for GPD device sensors
 
   - Driver for MP29502
 
   - Driver for MP2869, MP29608, MP29612 and MP29816 series
 
 * Added chip support to existing drivers
 
   - asus-ec-sensors:
 	Add B650E-I
 	Add PRIME Z270-A
 	Add Pro WS WRX90E-SAGE SE
 	Add ROG STRIX X670E-E GAMING WIFI
 	Add ROG STRIX X870-I GAMING WIFI
 	Add ROG STRIX X870E-E GAMING WIFI
 	Add ROG STRIX Z690-E GAMING WIFI
 	Add ROG STRIX Z790E GAMING WIFI II
 	Add STRIX B850-I GAMING WIFI
 	Add TUF GAMING X670E PLUS WIFI
 	Add X670E-I GAMING WIFI
 	Add Z790-I GAMING WIFI
 
   - dell-smm: Add support for Dell OptiPlex 7040
 
   - ina238: Major cleanup, and
   	Add support for INA700
 	Add support for INA780
 
   - k10temp:
   	Add device ID for Strix Halo
 	Add support for AMD Family 1Ah-based models
 
   - lenovo-ec-sensors: Update P8 supprt
 
   - lm75: Add NXP P3T1750 support
 
   - pmbus/adm1275: Add sq24905c support
 
   - pmbus/isl68137: Add support for Renesas RAA228244 and RAA228246
 
   - pmbus/mp5990: Add support for MP5998
 
   - sht21: Add support for SHT20, SHT25
 
   - sl28cpld: Add sa67mcu compatible
 
 * Other notable changes
 
   - core:
 	Handle locking internally
 	Introduce 64-bit energy attribute support
 
   - cros_ec: Register into thermal framework, improve PWM control
 
   - lm75: allow interrupt for ti,tmp75
 
   - mlxreg-fan: Add support for new flavour of capability register
 
   - sbtsi_temp: AMD CPU extended temperature range support
 
   - sht21: Add devicetree support
 
 * Various other minor improvements and fixes
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Merge tag 'hwmon-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New drivers:

   - Kontron SMARC-sAM67

   - GPD device sensors

   - MP29502

   - MP2869, MP29608, MP29612 and MP29816 series

  Added chip support to existing drivers:

   - asus-ec-sensors:
	Add B650E-I
	Add PRIME Z270-A
	Add Pro WS WRX90E-SAGE SE
	Add ROG STRIX X670E-E GAMING WIFI
	Add ROG STRIX X870-I GAMING WIFI
	Add ROG STRIX X870E-E GAMING WIFI
	Add ROG STRIX Z690-E GAMING WIFI
	Add ROG STRIX Z790E GAMING WIFI II
	Add STRIX B850-I GAMING WIFI
	Add TUF GAMING X670E PLUS WIFI
	Add X670E-I GAMING WIFI
	Add Z790-I GAMING WIFI

   - dell-smm: Add support for Dell OptiPlex 7040

   - ina238: Major cleanup, and
  	Add support for INA700
	Add support for INA780

   - k10temp:
  	Add device ID for Strix Halo
	Add support for AMD Family 1Ah-based models

   - lenovo-ec-sensors: Update P8 supprt

   - lm75: Add NXP P3T1750 support

   - pmbus/adm1275: Add sq24905c support

   - pmbus/isl68137: Add support for Renesas RAA228244 and RAA228246

   - pmbus/mp5990: Add support for MP5998

   - sht21: Add support for SHT20, SHT25

   - sl28cpld: Add sa67mcu compatible

  Other notable changes:

   - core:
	Handle locking internally
	Introduce 64-bit energy attribute support

   - cros_ec: Register into thermal framework, improve PWM control

   - lm75: allow interrupt for ti,tmp75

   - mlxreg-fan: Add support for new flavour of capability register

   - sbtsi_temp: AMD CPU extended temperature range support

   - sht21: Add devicetree support

  Various other minor improvements and fixes"

* tag 'hwmon-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (86 commits)
  dt-bindings: hwmon: (lm75) allow interrupt for ti,tmp75
  hwmon: (mlxreg-fan) Add support for new flavour of capability register
  hwmon: (mlxreg-fan) Separate methods of fan setting coming from different subsystems
  hwmon: (cros_ec) register fans into thermal framework cooling devices
  hwmon: (cros_ec) add PWM control over fans
  platform/chrome: update pwm fan control host commands
  hwmon: add SMARC-sAM67 support
  dt-bindings: hwmon: sl28cpld: add sa67mcu compatible
  hwmon: (asus-ec-sensors) add TUF GAMING X670E PLUS WIFI
  hwmon: (dell-smm) Add support for Dell OptiPlex 7040
  hwmon: (dell-smm) Add support for automatic fan mode
  hwmon: (gpd-fan) complete Kconfig dependencies
  hwmon: (asus-ec-sensors) increase timeout for locking ACPI mutex
  hwmon: (asus-ec-sensors) add ROG STRIX X870E-E GAMING WIFI
  hwmon: (dell-smm) Move clamping of fan speed out of i8k_set_fan()
  hwmon: (dell-smm) Remove Dell Precision 490 custom config data
  hwmon: (asus-ec-sensors) add ROG STRIX X670E-E GAMING WIFI
  hwmon: (gpd-fan) Fix range check for pwm input
  hwmon: (pmbus/mp5990) add support for MP5998
  dt-bindings: trivial-devices: add mps,mp5998
  ...
 2025-10-01 09:42:51 -07:00
Paolo Abeni
1a98f5699b Revert "Documentation: net: add flow control guide and document ethtool API" 
This reverts commit 7bd80ed89d72285515db673803b021469ba71ee8.

I should not have merged it to begin with due to pending review and
changes to be addressed.

Link: https://patch.msgid.link/c6f3af12df9b7998920a02027fc8893ce82afc4c.1759239721.git.pabeni@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2025-10-01 09:48:21 +02:00
Linus Torvalds
ae28ed4578 bpf-next-6.18 
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Merge tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

 - Support pulling non-linear xdp data with bpf_xdp_pull_data() kfunc
   (Amery Hung)

   Applied as a stable branch in bpf-next and net-next trees.

 - Support reading skb metadata via bpf_dynptr (Jakub Sitnicki)

   Also a stable branch in bpf-next and net-next trees.

 - Enforce expected_attach_type for tailcall compatibility (Daniel
   Borkmann)

 - Replace path-sensitive with path-insensitive live stack analysis in
   the verifier (Eduard Zingerman)

   This is a significant change in the verification logic. More details,
   motivation, long term plans are in the cover letter/merge commit.

 - Support signed BPF programs (KP Singh)

   This is another major feature that took years to materialize.

   Algorithm details are in the cover letter/marge commit

 - Add support for may_goto instruction to s390 JIT (Ilya Leoshkevich)

 - Add support for may_goto instruction to arm64 JIT (Puranjay Mohan)

 - Fix USDT SIB argument handling in libbpf (Jiawei Zhao)

 - Allow uprobe-bpf program to change context registers (Jiri Olsa)

 - Support signed loads from BPF arena (Kumar Kartikeya Dwivedi and
   Puranjay Mohan)

 - Allow access to union arguments in tracing programs (Leon Hwang)

 - Optimize rcu_read_lock() + migrate_disable() combination where it's
   used in BPF subsystem (Menglong Dong)

 - Introduce bpf_task_work_schedule*() kfuncs to schedule deferred
   execution of BPF callback in the context of a specific task using the
   kernel’s task_work infrastructure (Mykyta Yatsenko)

 - Enforce RCU protection for KF_RCU_PROTECTED kfuncs (Kumar Kartikeya
   Dwivedi)

 - Add stress test for rqspinlock in NMI (Kumar Kartikeya Dwivedi)

 - Improve the precision of tnum multiplier verifier operation
   (Nandakumar Edamana)

 - Use tnums to improve is_branch_taken() logic (Paul Chaignon)

 - Add support for atomic operations in arena in riscv JIT (Pu Lehui)

 - Report arena faults to BPF error stream (Puranjay Mohan)

 - Search for tracefs at /sys/kernel/tracing first in bpftool (Quentin
   Monnet)

 - Add bpf_strcasecmp() kfunc (Rong Tao)

 - Support lookup_and_delete_elem command in BPF_MAP_STACK_TRACE (Tao
   Chen)

* tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (197 commits)
  libbpf: Replace AF_ALG with open coded SHA-256
  selftests/bpf: Add stress test for rqspinlock in NMI
  selftests/bpf: Add test case for different expected_attach_type
  bpf: Enforce expected_attach_type for tailcall compatibility
  bpftool: Remove duplicate string.h header
  bpf: Remove duplicate crypto/sha2.h header
  libbpf: Fix error when st-prefix_ops and ops from differ btf
  selftests/bpf: Test changing packet data from kfunc
  selftests/bpf: Add stacktrace map lookup_and_delete_elem test case
  selftests/bpf: Refactor stacktrace_map case with skeleton
  bpf: Add lookup_and_delete_elem for BPF_MAP_STACK_TRACE
  selftests/bpf: Fix flaky bpf_cookie selftest
  selftests/bpf: Test changing packet data from global functions with a kfunc
  bpf: Emit struct bpf_xdp_sock type in vmlinux BTF
  selftests/bpf: Task_work selftest cleanup fixes
  MAINTAINERS: Delete inactive maintainers from AF_XDP
  bpf: Mark kfuncs as __noclone
  selftests/bpf: Add kprobe multi write ctx attach test
  selftests/bpf: Add kprobe write ctx attach test
  selftests/bpf: Add uprobe context ip register change test
  ...
 2025-09-30 17:58:11 -07:00
Linus Torvalds
22bdd6e68b - Add functionality to provide runtime firmware updates for the non-x86 parts 
of an AMD platform like the security processor (ASP) firmware, modules
   etc, for example. The intent being that these updates are interim,
   live fixups before a proper BIOS update can be attempted
 
 - Add guest support for AMD's Secure AVIC feature which gives encrypted
   guests the needed protection against a malicious hypervisor generating
   unexpected interrupts and injecting them into such guest, thus
   interfering with its operation in an unexpected and negative manner.
   The advantage of this scheme is that the guest determines which
   interrupts and when to accept them vs leaving that to the benevolence
   (or not) of the hypervisor
 
 - Strictly separate the startup code from the rest of the kernel where
   former is executed from the initial 1:1 mapping of memory. The problem
   was that the toolchain-generated version of the code was being
   executed from a different mapping of memory than what was "assumed"
   during code generation, needing an ever-growing pile of fixups for
   absolute memory references which are invalid in the early, 1:1 memory
   mapping during boot.
 
   The major advantage of this is that there's no need to check the 1:1
   mapping portion of the code for absolute relocations anymore and get
   rid of the RIP_REL_REF() macro sprinkling all over the place.
 
   For more info, see Ard's very detailed writeup on this:
   https://lore.kernel.org/r/CAMj1kXEzKEuePEiHB%2BHxvfQbFz0sTiHdn4B%2B%2BzVBJ2mhkPkQ4Q@mail.gmail.com
 
 - The usual cleanups and fixes
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Merge tag 'x86_apic_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 SEV and apic updates from Borislav Petkov:

 - Add functionality to provide runtime firmware updates for the non-x86
   parts of an AMD platform like the security processor (ASP) firmware,
   modules etc, for example. The intent being that these updates are
   interim, live fixups before a proper BIOS update can be attempted

 - Add guest support for AMD's Secure AVIC feature which gives encrypted
   guests the needed protection against a malicious hypervisor
   generating unexpected interrupts and injecting them into such guest,
   thus interfering with its operation in an unexpected and negative
   manner.

   The advantage of this scheme is that the guest determines which
   interrupts and when to accept them vs leaving that to the benevolence
   (or not) of the hypervisor

 - Strictly separate the startup code from the rest of the kernel where
   former is executed from the initial 1:1 mapping of memory.

   The problem was that the toolchain-generated version of the code was
   being executed from a different mapping of memory than what was
   "assumed" during code generation, needing an ever-growing pile of
   fixups for absolute memory references which are invalid in the early,
   1:1 memory mapping during boot.

   The major advantage of this is that there's no need to check the 1:1
   mapping portion of the code for absolute relocations anymore and get
   rid of the RIP_REL_REF() macro sprinkling all over the place.

   For more info, see Ard's very detailed writeup on this [1]

 - The usual cleanups and fixes

Link: https://lore.kernel.org/r/CAMj1kXEzKEuePEiHB%2BHxvfQbFz0sTiHdn4B%2B%2BzVBJ2mhkPkQ4Q@mail.gmail.com [1]

* tag 'x86_apic_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (49 commits)
  x86/boot: Drop erroneous __init annotation from early_set_pages_state()
  crypto: ccp - Add AMD Seamless Firmware Servicing (SFS) driver
  crypto: ccp - Add new HV-Fixed page allocation/free API
  x86/sev: Add new dump_rmp parameter to snp_leak_pages() API
  x86/startup/sev: Document the CPUID flow in the boot #VC handler
  objtool: Ignore __pi___cfi_ prefixed symbols
  x86/sev: Zap snp_abort()
  x86/apic/savic: Do not use snp_abort()
  x86/boot: Get rid of the .head.text section
  x86/boot: Move startup code out of __head section
  efistub/x86: Remap inittext read-execute when needed
  x86/boot: Create a confined code area for startup code
  x86/kbuild: Incorporate boot/startup/ via Kbuild makefile
  x86/boot: Revert "Reject absolute references in .head.text"
  x86/boot: Check startup code for absence of absolute relocations
  objtool: Add action to check for absence of absolute relocations
  x86/sev: Export startup routines for later use
  x86/sev: Move __sev_[get|put]_ghcb() into separate noinstr object
  x86/sev: Provide PIC aliases for SEV related data objects
  x86/boot: Provide PIC aliases for 5-level paging related constants
  ...
 2025-09-30 13:40:35 -07:00
Linus Torvalds
56a0810d8c audit/stable-6.18 PR 20250926 
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Merge tag 'audit-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit updates from Paul Moore:

 - Proper audit support for multiple LSMs

   As the audit subsystem predated the work to enable multiple LSMs,
   some additional work was needed to support logging the different LSM
   labels for the subjects/tasks and objects on the system. Casey's
   patches add new auxillary records for subjects and objects that
   convey the additional labels.

 - Ensure fanotify audit events are always generated

   Generally speaking security relevant subsystems always generate audit
   events, unless explicitly ignored. However, up to this point fanotify
   events had been ignored by default, but starting with this pull
   request fanotify follows convention and generates audit events by
   default.

 - Replace an instance of strcpy() with strscpy()

 - Minor indentation, style, and comment fixes

* tag 'audit-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: fix skb leak when audit rate limit is exceeded
  audit: init ab->skb_list earlier in audit_buffer_alloc()
  audit: add record for multiple object contexts
  audit: add record for multiple task security contexts
  lsm: security_lsmblob_to_secctx module selection
  audit: create audit_stamp structure
  audit: add a missing tab
  audit: record fanotify event regardless of presence of rules
  audit: fix typo in auditfilter.c comment
  audit: Replace deprecated strcpy() with strscpy()
  audit: fix indentation in audit_log_exit()
 2025-09-30 08:22:16 -07:00
Oleksij Rempel
7bd80ed89d Documentation: net: add flow control guide and document ethtool API 
Introduce a new document, flow_control.rst, to provide a comprehensive
guide on Ethernet Flow Control in Linux. The guide explains how flow
control works, how autonegotiation resolves pause capabilities, and how
to configure it using ethtool and Netlink.

In parallel, document the pause and pause-stat attributes in the
ethtool.yaml netlink spec. This enables the ynl tool to generate
kernel-doc comments for the corresponding enums in the UAPI header,
making the C interface self-documenting.

Finally, replace the legacy flow control section in phy.rst with a
reference to the new document and add pointers in the relevant C source
files.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20250924120241.724850-1-o.rempel@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2025-09-30 09:48:31 +02:00
Ivan Vecera
a680581f6a dpll: add phase-offset-avg-factor device attribute to netlink spec 
Add dpll device level attribute DPLL_A_PHASE_OFFSET_AVG_FACTOR to allow
control over a calculation of reported phase offset value. Attribute is
present, if the driver provides such capability, otherwise attribute
shall not be present.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250927084912.2343597-2-ivecera@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-29 18:57:41 -07:00
Linus Torvalds
18b19abc37 namespace-6.18-rc1 
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Merge tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull namespace updates from Christian Brauner:
 "This contains a larger set of changes around the generic namespace
  infrastructure of the kernel.

  Each specific namespace type (net, cgroup, mnt, ...) embedds a struct
  ns_common which carries the reference count of the namespace and so
  on.

  We open-coded and cargo-culted so many quirks for each namespace type
  that it just wasn't scalable anymore. So given there's a bunch of new
  changes coming in that area I've started cleaning all of this up.

  The core change is to make it possible to correctly initialize every
  namespace uniformly and derive the correct initialization settings
  from the type of the namespace such as namespace operations, namespace
  type and so on. This leaves the new ns_common_init() function with a
  single parameter which is the specific namespace type which derives
  the correct parameters statically. This also means the compiler will
  yell as soon as someone does something remotely fishy.

  The ns_common_init() addition also allows us to remove ns_alloc_inum()
  and drops any special-casing of the initial network namespace in the
  network namespace initialization code that Linus complained about.

  Another part is reworking the reference counting. The reference
  counting was open-coded and copy-pasted for each namespace type even
  though they all followed the same rules. This also removes all open
  accesses to the reference count and makes it private and only uses a
  very small set of dedicated helpers to manipulate them just like we do
  for e.g., files.

  In addition this generalizes the mount namespace iteration
  infrastructure introduced a few cycles ago. As reminder, the vfs makes
  it possible to iterate sequentially and bidirectionally through all
  mount namespaces on the system or all mount namespaces that the caller
  holds privilege over. This allow userspace to iterate over all mounts
  in all mount namespaces using the listmount() and statmount() system
  call.

  Each mount namespace has a unique identifier for the lifetime of the
  systems that is exposed to userspace. The network namespace also has a
  unique identifier working exactly the same way. This extends the
  concept to all other namespace types.

  The new nstree type makes it possible to lookup namespaces purely by
  their identifier and to walk the namespace list sequentially and
  bidirectionally for all namespace types, allowing userspace to iterate
  through all namespaces. Looking up namespaces in the namespace tree
  works completely locklessly.

  This also means we can move the mount namespace onto the generic
  infrastructure and remove a bunch of code and members from struct
  mnt_namespace itself.

  There's a bunch of stuff coming on top of this in the future but for
  now this uses the generic namespace tree to extend a concept
  introduced first for pidfs a few cycles ago. For a while now we have
  supported pidfs file handles for pidfds. This has proven to be very
  useful.

  This extends the concept to cover namespaces as well. It is possible
  to encode and decode namespace file handles using the common
  name_to_handle_at() and open_by_handle_at() apis.

  As with pidfs file handles, namespace file handles are exhaustive,
  meaning it is not required to actually hold a reference to nsfs in
  able to decode aka open_by_handle_at() a namespace file handle.
  Instead the FD_NSFS_ROOT constant can be passed which will let the
  kernel grab a reference to the root of nsfs internally and thus decode
  the file handle.

  Namespaces file descriptors can already be derived from pidfds which
  means they aren't subject to overmount protection bugs. IOW, it's
  irrelevant if the caller would not have access to an appropriate
  /proc/<pid>/ns/ directory as they could always just derive the
  namespace based on a pidfd already.

  It has the same advantage as pidfds. It's possible to reliably and for
  the lifetime of the system refer to a namespace without pinning any
  resources and to compare them trivially.

  Permission checking is kept simple. If the caller is located in the
  namespace the file handle refers to they are able to open it otherwise
  they must hold privilege over the owning namespace of the relevant
  namespace.

  The namespace file handle layout is exposed as uapi and has a stable
  and extensible format. For now it simply contains the namespace
  identifier, the namespace type, and the inode number. The stable
  format means that userspace may construct its own namespace file
  handles without going through name_to_handle_at() as they are already
  allowed for pidfs and cgroup file handles"

* tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (65 commits)
  ns: drop assert
  ns: move ns type into struct ns_common
  nstree: make struct ns_tree private
  ns: add ns_debug()
  ns: simplify ns_common_init() further
  cgroup: add missing ns_common include
  ns: use inode initializer for initial namespaces
  selftests/namespaces: verify initial namespace inode numbers
  ns: rename to __ns_ref
  nsfs: port to ns_ref_*() helpers
  net: port to ns_ref_*() helpers
  uts: port to ns_ref_*() helpers
  ipv4: use check_net()
  net: use check_net()
  net-sysfs: use check_net()
  user: port to ns_ref_*() helpers
  time: port to ns_ref_*() helpers
  pid: port to ns_ref_*() helpers
  ipc: port to ns_ref_*() helpers
  cgroup: port to ns_ref_*() helpers
  ...
 2025-09-29 11:20:29 -07:00
Linus Torvalds
b7ce6fa90f vfs-6.18-rc1.misc 
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Merge tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull misc vfs updates from Christian Brauner:
 "This contains the usual selections of misc updates for this cycle.

  Features:

   - Add "initramfs_options" parameter to set initramfs mount options.
     This allows to add specific mount options to the rootfs to e.g.,
     limit the memory size

   - Add RWF_NOSIGNAL flag for pwritev2()

     Add RWF_NOSIGNAL flag for pwritev2. This flag prevents the SIGPIPE
     signal from being raised when writing on disconnected pipes or
     sockets. The flag is handled directly by the pipe filesystem and
     converted to the existing MSG_NOSIGNAL flag for sockets

   - Allow to pass pid namespace as procfs mount option

     Ever since the introduction of pid namespaces, procfs has had very
     implicit behaviour surrounding them (the pidns used by a procfs
     mount is auto-selected based on the mounting process's active
     pidns, and the pidns itself is basically hidden once the mount has
     been constructed)

     This implicit behaviour has historically meant that userspace was
     required to do some special dances in order to configure the pidns
     of a procfs mount as desired. Examples include:

     * In order to bypass the mnt_too_revealing() check, Kubernetes
       creates a procfs mount from an empty pidns so that user
       namespaced containers can be nested (without this, the nested
       containers would fail to mount procfs)

       But this requires forking off a helper process because you cannot
       just one-shot this using mount(2)

     * Container runtimes in general need to fork into a container
       before configuring its mounts, which can lead to security issues
       in the case of shared-pidns containers (a privileged process in
       the pidns can interact with your container runtime process)

       While SUID_DUMP_DISABLE and user namespaces make this less of an
       issue, the strict need for this due to a minor uAPI wart is kind
       of unfortunate

       Things would be much easier if there was a way for userspace to
       just specify the pidns they want. So this pull request contains
       changes to implement a new "pidns" argument which can be set
       using fsconfig(2):

           fsconfig(procfd, FSCONFIG_SET_FD, "pidns", NULL, nsfd);
           fsconfig(procfd, FSCONFIG_SET_STRING, "pidns", "/proc/self/ns/pid", 0);

       or classic mount(2) / mount(8):

           // mount -t proc -o pidns=/proc/self/ns/pid proc /tmp/proc
           mount("proc", "/tmp/proc", "proc", MS_..., "pidns=/proc/self/ns/pid");

  Cleanups:

   - Remove the last references to EXPORT_OP_ASYNC_LOCK

   - Make file_remove_privs_flags() static

   - Remove redundant __GFP_NOWARN when GFP_NOWAIT is used

   - Use try_cmpxchg() in start_dir_add()

   - Use try_cmpxchg() in sb_init_done_wq()

   - Replace offsetof() with struct_size() in ioctl_file_dedupe_range()

   - Remove vfs_ioctl() export

   - Replace rwlock() with spinlock in epoll code as rwlock causes
     priority inversion on preempt rt kernels

   - Make ns_entries in fs/proc/namespaces const

   - Use a switch() statement() in init_special_inode() just like we do
     in may_open()

   - Use struct_size() in dir_add() in the initramfs code

   - Use str_plural() in rd_load_image()

   - Replace strcpy() with strscpy() in find_link()

   - Rename generic_delete_inode() to inode_just_drop() and
     generic_drop_inode() to inode_generic_drop()

   - Remove unused arguments from fcntl_{g,s}et_rw_hint()

  Fixes:

   - Document @name parameter for name_contains_dotdot() helper

   - Fix spelling mistake

   - Always return zero from replace_fd() instead of the file descriptor
     number

   - Limit the size for copy_file_range() in compat mode to prevent a
     signed overflow

   - Fix debugfs mount options not being applied

   - Verify the inode mode when loading it from disk in minixfs

   - Verify the inode mode when loading it from disk in cramfs

   - Don't trigger automounts with RESOLVE_NO_XDEV

     If openat2() was called with RESOLVE_NO_XDEV it didn't traverse
     through automounts, but could still trigger them

   - Add FL_RECLAIM flag to show_fl_flags() macro so it appears in
     tracepoints

   - Fix unused variable warning in rd_load_image() on s390

   - Make INITRAMFS_PRESERVE_MTIME depend on BLK_DEV_INITRD

   - Use ns_capable_noaudit() when determining net sysctl permissions

   - Don't call path_put() under namespace semaphore in listmount() and
     statmount()"

* tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
  fcntl: trim arguments
  listmount: don't call path_put() under namespace semaphore
  statmount: don't call path_put() under namespace semaphore
  pid: use ns_capable_noaudit() when determining net sysctl permissions
  fs: rename generic_delete_inode() and generic_drop_inode()
  init: INITRAMFS_PRESERVE_MTIME should depend on BLK_DEV_INITRD
  initramfs: Replace strcpy() with strscpy() in find_link()
  initrd: Use str_plural() in rd_load_image()
  initramfs: Use struct_size() helper to improve dir_add()
  initrd: Fix unused variable warning in rd_load_image() on s390
  fs: use the switch statement in init_special_inode()
  fs/proc/namespaces: make ns_entries const
  filelock: add FL_RECLAIM to show_fl_flags() macro
  eventpoll: Replace rwlock with spinlock
  selftests/proc: add tests for new pidns APIs
  procfs: add "pidns" mount option
  pidns: move is-ancestor logic to helper
  openat2: don't trigger automounts with RESOLVE_NO_XDEV
  namei: move cross-device check to __traverse_mounts
  namei: remove LOOKUP_NO_XDEV check from handle_mounts
  ...
 2025-09-29 09:03:07 -07:00
Matthieu Baerts (NGI0)
539f6b9de3 mptcp: pm: in-kernel: add laminar endpoints 
Currently, upon the reception of an ADD_ADDR (and when the fullmesh flag
is not used), the in-kernel PM will create new subflows using the local
address the routing configuration will pick.

It would be easier to pick local addresses from a selected list of
endpoints, and use it only once, than relying on routing rules.

Use case: both the client (C) and the server (S) have two addresses (a
and b). The client establishes the connection between C(a) and S(a).
Once established, the server announces its additional address S(b). Once
received, the client connects to it using its second address C(b).
Compared to a situation without the 'laminar' endpoint for C(b), the
client didn't use this address C(b) to establish a subflow to the
server's primary address S(a). So at the end, we have:

   C        S
  C(a) --- S(a)
  C(b) --- S(b)

In case of a 3rd address on each side (C(c) and S(c)), upon the
reception of an ADD_ADDR with S(c), the client should not pick C(b)
because it has already been used. C(c) should then be used.

Note that this situation is currently possible if C doesn't add any
endpoint, but configure the routing in order to pick C(b) for the route
to S(b), and pick C(c) for the route to S(c). That doesn't sound very
practical because it means knowing in advance the IP addresses that
will be used and announced by the server.

'laminar', like the idea of laminar flows: the different subflows don't
mix with each other on an endpoint, unlike the "turbulent" way traffic
is mixed by 'fullmesh'.

In the code, the new endpoint type is added. Similar to the other
subflow types, an MPTCP_INFO counter is added. While at it, hole are now
commented in struct mptcp_info, to remember next time that these holes
can no longer be used.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/503
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-15-ad126cc47c6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 17:44:05 -07:00
Matthieu Baerts (NGI0)
e7757b6d3a mptcp: pm: in-kernel: rename 'local_addr_max' to 'endp_subflow_max' 
A few variables linked to the in-kernel Path-Manager are confusing, and
it would help current and future developers, to clarify them.

One of them is 'local_addr_max', which in fact represents the maximum
number of 'subflow' endpoints that can be used to create new subflows,
and not the number of local addresses that have been used to create
subflows.

While at it, add an additional name for the corresponding variable in
MPTCP INFO: mptcpi_endp_subflow_max. Not to break the current uAPI, the
new name is added as a 'define' pointing to the former name. This will
then also help userspace devs.

Also move the variable and function next to the other 'endp_X_max' ones.

No functional changes intended.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-9-ad126cc47c6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 17:44:05 -07:00
Matthieu Baerts (NGI0)
37712d84df mptcp: pm: in-kernel: rename 'add_addr_accept_max' to 'limit_add_addr_accepted' 
A few variables linked to the in-kernel Path-Manager are confusing, and
it would help current and future developers, to clarify them.

One of them is 'add_addr_accept_max', which in fact represents the limit
of ADD_ADDR that can be accepted:  the limit set via 'ip mptcp limit
add_addr_accepted X' for example. It is not linked to the maximum number
of accepted ADD_ADDR.

While at it, add an additional name for the corresponding variable in
MPTCP INFO: mptcpi_limit_add_addr_accepted. Not to break the current
uAPI, the new name is added as a 'define' pointing to the former name.
This will then also help userspace devs.

No functional changes intended.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-8-ad126cc47c6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 17:44:04 -07:00
Matthieu Baerts (NGI0)
45cae57066 mptcp: pm: in-kernel: rename 'add_addr_signal_max' to 'endp_signal_max' 
A few variables linked to the in-kernel Path-Manager are confusing, and
it would help current and future developers, to clarify them.

One of them is 'add_addr_signal_max', which in fact represents the
maximum number of 'signal' endpoints that can be used to announced
addresses, and not the number of ADD_ADDR that can be signalled.

While at it, add an additional name for the corresponding variable in
MPTCP INFO: mptcpi_endp_signal_max. Not to break the current uAPI, the
new name is added as a 'define' pointing to the former name. This will
then also help userspace devs.

No functional changes intended.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-7-ad126cc47c6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 17:44:04 -07:00
Matthieu Baerts (NGI0)
3eb3c9a959 mptcp: pm: in-kernel: rename 'subflows_max' to 'limit_extra_subflows' 
A few variables linked to the in-kernel Path-Manager are confusing, and
it would help current and future developers, to clarify them.

One of them is 'subflows_max', which in fact represents the limit of
extra subflows: the limit set via 'ip mptcp limit subflows X' for
example. It is not linked to the maximum number of created / possible
subflows.

While at it, add an additional name for the corresponding variable in
MPTCP INFO: mptcpi_limit_extra_subflows. Not to break the current uAPI,
the new name is added as a 'define' pointing to the former name. This
will then also help userspace devs.

No functional changes intended.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-6-ad126cc47c6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 17:44:04 -07:00
Matthieu Baerts (NGI0)
c5273f6ca1 mptcp: pm: rename 'subflows' to 'extra_subflows' 
A few variables linked to the Path-Managers are confusing, and it would
help current and future developers, to clarify them.

One of them is 'subflows', which in fact represents the number of extra
subflows: all the additional subflows created after the initial one, and
not the total number of subflows.

While at it, add an additional name for the corresponding variable in
MPTCP INFO: mptcpi_extra_subflows. Not to break the current uAPI, the
new name is added as a 'define' pointing to the former name. This will
then also help userspace devs.

No functional changes intended.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-5-ad126cc47c6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 17:44:04 -07:00
Vadim Fedorenko
cc2f081299 ethtool: add FEC bins histogram report 
IEEE 802.3ck-2022 defines counters for FEC bins and 802.3df-2024
clarifies it a bit further. Implement reporting interface through as
addition to FEC stats available in ethtool. Drivers can leave bin
counter uninitialized if per-lane values are provided. In this case the
core will recalculate summ for the bin.

Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Link: https://patch.msgid.link/20250924124037.1508846-2-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 16:49:18 -07:00
Jakub Kicinski
bb9a242ce5 linux-can-next-for-6.18-20250924 
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Merge tag 'linux-can-next-for-6.18-20250924' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2025-09-25

this is a pull request of 48 patches for net-next/main, which
supersedes tags/linux-can-next-for-6.18-20250923.

The 1st patch is by Xichao Zhao and converts ns_to_ktime() to
us_to_ktime() in the m_can driver.

Vincent Mailhol contributes 2 patches: Updating the MAINTAINERS and
mailmap files to Vincent's new email address and sorting the includes
in the CAN helper library alphabeticaly.

Stéphane Grosjean's patch modifies all peak CAN drivers and the
mailmap to reflect Stéphane's new email address.

4 patches by Biju Das update the CAN-FD handling in the rcar_canfd
driver.

Followed by 11 patches by Geert Uytterhoeven updating and improving
the rcar_can driver.

Stefan Mätje contributes 2 patches for the esd_usb driver updating the
error messages.

The next 3 patch series are all by Vincent Mailhol: 3 patches to
optimize the size of struct raw_sock and struct uniqframe. 4 patches
which rework the CAN MTU logic as preparation for CAN-XL interfaces.
And finally 20 patches that prepare and refactor the CAN netlink code
for the upcoming CAN-XL support.

* tag 'linux-can-next-for-6.18-20250924' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next: (48 commits)
  can: netlink: add userland error messages
  can: dev: add can_get_ctrlmode_str()
  can: calc_bittiming: make can_calc_tdco() FD agnostic
  can: netlink: make can_tdc_fill_info() FD agnostic
  can: netlink: add can_bitrate_const_fill_info()
  can: netlink: add can_bittiming_const_fill_info()
  can: netlink: add can_bittiming_fill_info()
  can: netlink: add can_data_bittiming_get_size()
  can: netlink: make can_tdc_get_size() FD agnostic
  can: netlink: add can_ctrlmode_changelink()
  can: netlink: add can_dtb_changelink()
  can: netlink: make can_tdc_changelink() FD agnostic
  can: netlink: remove useless check in can_tdc_changelink()
  can: netlink: refactor CAN_CTRLMODE_TDC_{AUTO,MANUAL} flag reset logic
  can: netlink: add can_validate_databittiming()
  can: netlink: add can_validate_tdc()
  can: netlink: refactor can_validate_bittiming()
  can: netlink: document which symbols are FD specific
  can: dev: make can_get_relative_tdco() FD agnostic and move it to bittiming.h
  can: dev: move struct data_bittiming_params to linux/can/bittiming.h
  ...
====================

Link: https://patch.msgid.link/20250925121332.848157-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 14:46:59 -07:00
Jakub Kicinski
94aced6ed9 Quite a bit more things, including pull requests from drivers: 
- mt76: MLO support, HW restart improvements
  - rtw88/89: small features, prep for RTL8922DE support
  - ath10k: GTK rekey fixes
  - cfg80211/mac80211:
    - additions for more NAN support
    - S1G channel representation cleanup
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Merge tag 'wireless-next-2025-09-25' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
Quite a bit more things, including pull requests from drivers:

 - mt76: MLO support, HW restart improvements
 - rtw88/89: small features, prep for RTL8922DE support
 - ath10k: GTK rekey fixes
 - cfg80211/mac80211:
   - additions for more NAN support
   - S1G channel representation cleanup

* tag 'wireless-next-2025-09-25' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (167 commits)
  wifi: libertas: add WQ_UNBOUND to alloc_workqueue users
  Revert "wifi: libertas: WQ_PERCPU added to alloc_workqueue users"
  wifi: libertas: WQ_PERCPU added to alloc_workqueue users
  wifi: cfg80211: fix width unit in cfg80211_radio_chandef_valid()
  wifi: ath11k: HAL SRNG: don't deinitialize and re-initialize again
  wifi: ath12k: enforce CPU endian format for all QMI data
  wifi: ath12k: Use 1KB Cache Flush Command for QoS TID Descriptors
  wifi: ath12k: Fix flush cache failure during RX queue update
  wifi: ath12k: Add Retry Mechanism for REO RX Queue Update Failures
  wifi: ath12k: Refactor REO command to use ath12k_dp_rx_tid_rxq
  wifi: ath12k: Refactor RX TID buffer cleanup into helper function
  wifi: ath12k: Refactor RX TID deletion handling into helper function
  wifi: ath12k: Increase DP_REO_CMD_RING_SIZE to 256
  wifi: cfg80211: remove IEEE80211_CHAN_{1,2,4,8,16}MHZ flags
  wifi: rtw89: avoid circular locking dependency in ser_state_run()
  wifi: rtw89: fix leak in rtw89_core_send_nullfunc()
  wifi: rtw89: avoid possible TX wait initialization race
  wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()
  wifi: ath12k: Fix peer lookup in ath12k_dp_mon_rx_deliver_msdu()
  wifi: mac80211: fix Rx packet handling when pubsta information is not available
  ...
====================

Link: https://patch.msgid.link/20250925232341.4544-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-26 14:27:28 -07:00
Theodore Ts'o
04a91570ac ext4: implemet new ioctls to set and get superblock parameters 
Implement the EXT4_IOC_GET_TUNE_SB_PARAM and
EXT4_IOC_SET_TUNE_SB_PARAM ioctls, which allow certains superblock
parameters to be set while the file system is mounted, without needing
write access to the block device.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Message-ID: <20250916-tune2fs-v2-3-d594dc7486f0@mit.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
 2025-09-26 08:36:08 -04:00
Jakub Kicinski
203e3beb73 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR (net-6.17-rc8).

Conflicts:

drivers/net/can/spi/hi311x.c
  6b6968084721 ("can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled")
  27ce71e1ce81 ("net: WQ_PERCPU added to alloc_workqueue users")
https://lore.kernel.org/72ce7599-1b5b-464a-a5de-228ff9724701@kernel.org

net/smc/smc_loopback.c
drivers/dibs/dibs_loopback.c
  a35c04de2565 ("net/smc: fix warning in smc_rx_splice() when calling get_page()")
  cc21191b584c ("dibs: Move data path to dibs layer")
https://lore.kernel.org/74368a5c-48ac-4f8e-a198-40ec1ed3cf5f@kernel.org

Adjacent changes:

drivers/net/dsa/lantiq/lantiq_gswip.c
  c0054b25e2f1 ("net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()")
  7a1eaef0a791 ("net: dsa: lantiq_gswip: support model-specific mac_select_pcs()")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-25 11:00:59 -07:00
Linus Torvalds
4ff71af020 Including fixes from Bluetooth, IPsec and CAN. 
No known regressions at this point.
 
 Current release - regressions:
 
   - xfrm: xfrm_alloc_spi shouldn't use 0 as SPI
 
 Previous releases - regressions:
 
   - xfrm: fix offloading of cross-family tunnels
 
   - bluetooth: fix several races leading to UaFs
 
   - dsa: lantiq_gswip: fix FDB entries creation for the CPU port
 
   - eth: tun: update napi->skb after XDP process
 
   - eth: mlx: fix UAF in flow counter release
 
 Previous releases - always broken:
 
   - core: forbid FDB status change while nexthop is in a group
 
   - smc: fix warning in smc_rx_splice() when calling get_page()
 
   - can: provide missing ndo_change_mtu(), to prevent buffer overflow.
 
   - eth: i40e: fix VF config validation
 
   - eth: broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from Bluetooth, IPsec and CAN.

  No known regressions at this point.

  Current release - regressions:

   - xfrm: xfrm_alloc_spi shouldn't use 0 as SPI

  Previous releases - regressions:

   - xfrm: fix offloading of cross-family tunnels

   - bluetooth: fix several races leading to UaFs

   - dsa: lantiq_gswip: fix FDB entries creation for the CPU port

   - eth:
       - tun: update napi->skb after XDP process
       - mlx: fix UAF in flow counter release

  Previous releases - always broken:

   - core: forbid FDB status change while nexthop is in a group

   - smc: fix warning in smc_rx_splice() when calling get_page()

   - can: provide missing ndo_change_mtu(), to prevent buffer overflow.

   - eth:
       - i40e: fix VF config validation
       - broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl"

* tag 'net-6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits)
  octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()
  net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port
  net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()
  libie: fix string names for AQ error codes
  net/mlx5e: Fix missing FEC RS stats for RS_544_514_INTERLEAVED_QUAD
  net/mlx5: HWS, ignore flow level for multi-dest table
  net/mlx5: fs, fix UAF in flow counter release
  selftests: fib_nexthops: Add test cases for FDB status change
  selftests: fib_nexthops: Fix creation of non-FDB nexthops
  nexthop: Forbid FDB status change while nexthop is in a group
  net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS
  bnxt_en: correct offset handling for IPv6 destination address
  ptp: document behavior of PTP_STRICT_FLAGS
  broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl
  broadcom: fix support for PTP_PEROUT_DUTY_CYCLE
  Bluetooth: MGMT: Fix possible UAFs
  Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync
  Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue
  Bluetooth: hci_sync: Fix hci_resume_advertising_sync
  Bluetooth: Fix build after header cleanup
  ...
 2025-09-25 08:23:52 -07:00
Linus Torvalds
93a2744561 virtio,vhost: last minute fixes 
More small fixes. Most notably this fixes crashes and hangs in
 vhost-net.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "virtio,vhost: last minute fixes

  More small fixes. Most notably this fixes crashes and hangs in
  vhost-net"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  MAINTAINERS, mailmap: Update address for Peter Hilber
  virtio_config: clarify output parameters
  uapi: vduse: fix typo in comment
  vhost: Take a reference on the task in struct vhost_task.
  vhost-net: flush batched before enabling notifications
  Revert "vhost/net: Defer TX queue re-enable until after sendmsg"
  vhost-net: unbreak busy polling
  vhost-scsi: fix argument order in tport allocation error message
 2025-09-25 08:06:03 -07:00
Vincent Mailhol
94040a8f48 can: netlink: document which symbols are FD specific 
The CAN XL netlink interface will also have data bitrate and TDC
parameters. The current FD parameters do not have a prefix in their
names to differentiate them.

Because the netlink interface is part of the UAPI, it is unfortunately
not feasible to rename the existing symbols to add an FD_ prefix. The
best alternative is to add a comment for each of the symbols to notify
the reader of which parts are CAN FD specific.

While at it, fix a typo: transiver -> transceiver.

Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250923-canxl-netlink-prep-v4-3-e720d28f66fe@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
 2025-09-24 17:09:44 +02:00
Armin Wolf
1c1658058c hwmon: (dell-smm) Add support for automatic fan mode 
Many machines treat fan state 3 as some sort of automatic mode,
which is superior to the separate SMM calls for switching to
automatic fan mode for two reasons:

- the fan control mode can be controlled for each fan separately
- the current fan control mode can be retrieved from the BIOS

On some machines however, this special fan state does not exist.
Fan state 3 acts like a regular fan state on such machines or
does not exist at all. Such machines usually use separate SMM calls
for enabling/disabling automatic fan control.

Add support for it. If the machine supports separate SMM calls
for changing the fan control mode, then the other interface is
ignored.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20250917181036.10972-4-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2025-09-24 07:50:09 -07:00
Arnd Bergmann
ff0bebab77 Add Qualcomm TEE driver (QTEE) 
This introduces a Trusted Execution Environment (TEE) driver for
 Qualcomm TEE (QTEE).
 
 QTEE enables Trusted Applications (TAs) and services to run securely. It
 uses an object-based interface, where each service is an object with
 sets of operations.
 
 Kernel and userspace services are also available to QTEE through a
 similar approach. QTEE makes callback requests that are converted into
 object invocations. These objects can represent services within the
 kernel or userspace process.
 
 We extend the TEE subsystem to understand object parameters and an ioctl
 call so client can invoke objects in QTEE:
   - TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF_*
   - TEE_IOC_OBJECT_INVOKE
 
 The existing ioctl calls TEE_IOC_SUPPL_RECV and TEE_IOC_SUPPL_SEND are
 used for invoking services in the userspace process by QTEE.
 
 The TEE backend driver uses the QTEE Transport Message to communicate
 with QTEE. Interactions through the object INVOKE interface are
 translated into QTEE messages. Likewise, object invocations from QTEE
 for userspace objects are converted into SEND/RECV ioctl calls to
 supplicants.
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Merge tag 'tee-qcomtee-for-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee into soc/drivers

Add Qualcomm TEE driver (QTEE)

This introduces a Trusted Execution Environment (TEE) driver for
Qualcomm TEE (QTEE).

QTEE enables Trusted Applications (TAs) and services to run securely. It
uses an object-based interface, where each service is an object with
sets of operations.

Kernel and userspace services are also available to QTEE through a
similar approach. QTEE makes callback requests that are converted into
object invocations. These objects can represent services within the
kernel or userspace process.

We extend the TEE subsystem to understand object parameters and an ioctl
call so client can invoke objects in QTEE:
  - TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF_*
  - TEE_IOC_OBJECT_INVOKE

The existing ioctl calls TEE_IOC_SUPPL_RECV and TEE_IOC_SUPPL_SEND are
used for invoking services in the userspace process by QTEE.

The TEE backend driver uses the QTEE Transport Message to communicate
with QTEE. Interactions through the object INVOKE interface are
translated into QTEE messages. Likewise, object invocations from QTEE
for userspace objects are converted into SEND/RECV ioctl calls to
supplicants.

* tag 'tee-qcomtee-for-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee:
  Documentation: tee: Add Qualcomm TEE driver
  tee: qcom: enable TEE_IOC_SHM_ALLOC ioctl
  tee: qcom: add primordial object
  tee: add Qualcomm TEE driver
  tee: increase TEE_MAX_ARG_SIZE to 4096
  tee: add TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF
  tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF
  tee: add close_context to TEE driver operation
  tee: allow a driver to allocate a tee_device without a pool

Link: https://lore.kernel.org/r/20250915174957.GA2040478@rayden
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2025-09-23 23:08:25 +02:00
Mykyta Yatsenko
5c8fd7e2b5 bpf: bpf task work plumbing 
This patch adds necessary plumbing in verifier, syscall and maps to
support handling new kfunc bpf_task_work_schedule and kernel structure
bpf_task_work. The idea is similar to how we already handle bpf_wq and
bpf_timer.
verifier changes validate calls to bpf_task_work_schedule to make sure
it is safe and expected invariants hold.
btf part is required to detect bpf_task_work structure inside map value
and store its offset, which will be used in the next patch to calculate
key and value addresses.
arraymap and hashtab changes are needed to handle freeing of the
bpf_task_work: run code needed to deinitialize it, for example cancel
task_work callback if possible.
The use of bpf_task_work and proper implementation for kfuncs are
introduced in the next patch.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250923112404.668720-6-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2025-09-23 07:34:38 -07:00
Mark Brown
2bfb20b65d
spi: rpc-if: Add resume support for RZ/G3E 
Merge series from Biju Das <biju.das.jz@bp.renesas.com>:

On RZ/G3E using PSCI, s2ram powers down the SoC. After resume,
reinitialize the hardware for SPI operations.

Also Replace the macro SIMPLE_DEV_PM_OPS->DEFINE_SIMPLE_DEV_PM_OPS macro
and use pm_sleep_ptr(). This lets us drop the check for CONFIG_PM_SLEEP
and __maybe_unused attribute from PM functions.
 2025-09-23 10:57:52 +02:00
KP Singh
3492715683 bpf: Implement signature verification for BPF programs 
This patch extends the BPF_PROG_LOAD command by adding three new fields
to `union bpf_attr` in the user-space API:

  - signature: A pointer to the signature blob.
  - signature_size: The size of the signature blob.
  - keyring_id: The serial number of a loaded kernel keyring (e.g.,
    the user or session keyring) containing the trusted public keys.

When a BPF program is loaded with a signature, the kernel:

1.  Retrieves the trusted keyring using the provided `keyring_id`.
2.  Verifies the supplied signature against the BPF program's
    instruction buffer.
3.  If the signature is valid and was generated by a key in the trusted
    keyring, the program load proceeds.
4.  If no signature is provided, the load proceeds as before, allowing
    for backward compatibility. LSMs can chose to restrict unsigned
    programs and implement a security policy.
5.  If signature verification fails for any reason,
    the program is not loaded.

Tested-by: syzbot@syzkaller.appspotmail.com
Signed-off-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/r/20250921160120.9711-2-kpsingh@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2025-09-22 18:58:03 -07:00
Matthieu Baerts (NGI0)
5c967ebb55 mptcp: use _BITUL() instead of (1 << x) 
Simply to use the proper way to declare bits, and to align with all
other flags declared in this file.

No functional changes intended.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250919-net-next-mptcp-server-side-flag-v1-5-a97a5d561a8b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-22 11:51:25 -07:00
Matthieu Baerts (NGI0)
3d7ae91107 mptcp: pm: netlink: announce server-side flag 
Now that the 'flags' attribute is used, it seems interesting to add one
flag for 'server-side', a boolean value.

This is duplicating the info from the dedicated 'server-side' attribute,
but it will be deprecated in the next commit, and removed in a few
versions.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250919-net-next-mptcp-server-side-flag-v1-2-a97a5d561a8b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-22 11:51:24 -07:00
Matthieu Baerts (NGI0)
c9809f03c1 mptcp: pm: netlink: only add server-side attr when true 
This attribute is a boolean. No need to add it to set it to 'false'.

Indeed, the default value when this attribute is not set is naturally
'false'. A few bytes can then be saved by not adding this attribute if
the connection is not on the server side.

This prepares the future deprecation of its attribute, in favour of a
new flag.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250919-net-next-mptcp-server-side-flag-v1-1-a97a5d561a8b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-22 11:51:24 -07:00
Jacob Keller
cd875625b4 ptp: document behavior of PTP_STRICT_FLAGS 
Commit 6138e687c7b6 ("ptp: Introduce strict checking of external time stamp
options.") added the PTP_STRICT_FLAGS to the set of flags supported for the
external timestamp request ioctl.

It is only supported by PTP_EXTTS_REQUEST2, as it was introduced the
introduction of the new ioctls. Further, the kernel has always set this
flag for PTP_EXTTS_REQUEST2 regardless of whether or not the user requested
the behavior.

This effectively means that the flag is not useful for userspace. If the
user issues a PTP_EXTTS_REQUEST ioctl, the flag is ignored due to not being
supported on the old ioctl. If the user issues a PTP_EXTTS_REQUEST2 ioctl,
the flag will be set by the kernel regardless of whether the user set the
flag in their structure.

Add a comment documenting this behavior in the uAPI header file.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Tested-by: James Clark <jjc@jclark.com>
Link: https://patch.msgid.link/20250918-jk-fix-bcm-phy-supported-flags-v1-3-747b60407c9c@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-22 11:36:30 -07:00
Haixu Cui
6a1f3390fa
virtio-spi: Add virtio-spi.h 
Add virtio-spi.h header for virtio SPI.

Signed-off-by: Haixu Cui <quic_haixcui@quicinc.com>
Link: https://patch.msgid.link/20250908092348.1283552-3-quic_haixcui@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 2025-09-22 09:29:29 +01:00
Haixu Cui
d9a2211dd3
virtio: Add ID for virtio SPI 
Add VIRTIO_ID_SPI definition for virtio SPI.

Signed-off-by: Haixu Cui <quic_haixcui@quicinc.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Link: https://patch.msgid.link/20250908092348.1283552-2-quic_haixcui@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 2025-09-22 09:29:28 +01:00
Ashwini Sahu
d6d673dd1e uapi: vduse: fix typo in comment 
Fix a spelling mistake in vduse.h: "regsion" → "region" in the
documentation for struct vduse_iova_info.

No functional change.
Signed-off-by: Ashwini Sahu <ashwini@wisig.com>
Message-Id: <20250908095645.610336-1-ashwini@wisig.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2025-09-21 17:44:20 -04:00
Alasdair McWilliam
b73b8146d7 rtnetlink: add needed_{head,tail}room attributes 
Various network interface types make use of needed_{head,tail}room values
to efficiently reserve buffer space for additional encapsulation headers,
such as VXLAN, Geneve, IPSec, etc. However, it is not currently possible
to query these values in a generic way.

Introduce ability to query the needed_{head,tail}room values of a network
device via rtnetlink, such that applications that may wish to use these
values can do so.

For example, Cilium agent iterates over present devices based on user config
(direct routing, vxlan, geneve, wireguard etc.) and in future will configure
netkit in order to expose the needed_{head,tail}room into K8s pods. See
b9ed315d3c4c ("netkit: Allow for configuring needed_{head,tail}room").

Suggested-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alasdair McWilliam <alasdair@mcwilliam.dev>
Reviewed-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://patch.msgid.link/20250917095543.14039-1-alasdair@mcwilliam.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-09-19 17:21:55 -07:00
Christian Brauner
cc47f43427
nsfs: add inode number for anon namespace 
Add an inode number anonymous namespaces.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-09-19 14:26:18 +02:00
Christian Brauner
f861225b9e
nsfs: add missing id retrieval support 
The mount namespace has supported id retrieval for a while already.
Add support for the other types as well.

Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-09-19 14:26:16 +02:00
Christian Brauner
e83f0b5d10
nsfs: support exhaustive file handles 
Pidfd file handles are exhaustive meaning they don't require a handle on
another pidfd to pass to open_by_handle_at() so it can derive the
filesystem to decode in. Instead it can be derived from the file
handle itself. The same is possible for namespace file handles.

Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-09-19 14:26:16 +02:00
Christian Brauner
5222470b2f
nsfs: support file handles 
A while ago we added support for file handles to pidfs so pidfds can be
encoded and decoded as file handles. Userspace has adopted this quickly
and it's proven very useful. Implement file handles for namespaces as
well.

A process is not always able to open /proc/self/ns/. That requires
procfs to be mounted and for /proc/self/ or /proc/self/ns/ to not be
overmounted. However, userspace can always derive a namespace fd from
a pidfd. And that always works for a task's own namespace.

There's no need to introduce unnecessary behavioral differences between
/proc/self/ns/ fds, pidfd-derived namespace fds, and file-handle-derived
namespace fds. So namespace file handles are always decodable if the
caller is located in the namespace the file handle refers to.

This also allows a task to e.g., store a set of file handles to its
namespaces in a file on-disk so it can verify when it gets rexeced that
they're still valid and so on. This is akin to the pidfd use-case.

Or just plainly for namespace comparison reasons where a file handle to
the task's own namespace can be easily compared against others.

Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-09-19 14:26:16 +02:00
Lachlan Hodges
d0688dc2b1 wifi: cfg80211: correctly implement and validate S1G chandef 
Currently, the S1G channelisation implementation differs from that of
VHT, which is the PHY that S1G is based on. The major difference between
the clock rate is 1/10th of VHT. However how their channelisation is
represented within cfg80211 and mac80211 vastly differ.

To rectify this, remove the use of IEEE80211_CHAN_1/2/4.. flags that were
previously used to indicate the control channel width, however it should be
implied that the control channels are 1MHz in the case of S1G. Additionally,
introduce the invert - being IEEE80211_CHAN_NO_4/8/16MHz - that imply
the control channel may not be used for a certain bandwidth. With these
new flags, we can perform regulatory and chandef validation just as we would
for VHT.

To deal with the notion that S1G PHYs may contain a 2MHz primary channel,
introduce a new variable, s1g_primary_2mhz, which indicates whether we are
operating on a 2MHz primary channel. In this case, the chandef::chan points to
the 1MHz primary channel pointed to by the primary channel location. Alongside
this, introduce some new helper routines that can extract the sibling 1MHz
channel. The sibling being the alternate 1MHz primary subchannel within the
2MHz primary channel that is not pointed to by chandef::chan.

Furthermore, due to unique restrictions imposed on S1G PHYs, introduce
a new flag, IEEE80211_CHAN_S1G_NO_PRIMARY, which states that the 1MHz channel
cannot be used as a primary channel. This is assumed to be set by vendors
as it is hardware and regdom specific, When we validate a 2MHz primary channel,
we need to ensure both 1MHz subchannels do not contain this flag. If one or
both of the 1MHz subchannels contain this flag then the 2MHz primary is not
permitted for use as a primary channel.

Properly integrate S1G channel validation such that it is implemented
according with other PHY types such as VHT. Additionally, implement a new
S1G-specific regulatory flag to allow cfg80211 to understand specific
vendor requirements for S1G PHYs.

Signed-off-by: Arien Judge <arien.judge@morsemicro.com>
Signed-off-by: Andrew Pope <andrew.pope@morsemicro.com>
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20250918051913.500781-2-lachlan.hodges@morsemicro.com
[remove redundant NL80211_ATTR_S1G_PRIMARY_2MHZ check]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2025-09-19 11:55:56 +02:00