Pull dcache updates from Al Viro:
- d_alloc_parallel() API change (Neil's with my changes)
- NORCU fixes
- Reorganization and simplification of dentry eviction logic
- Simplifying rcu_read_lock() scopes in fs/dcache.c
- Secondary roots work - getting rid of NFS fake root dentries and
dealing with remaining shrink_dcache_for_umount() and
shrink_dentry_list() races
- making cursors NORCU (surprisingly easy)
* tag 'pull-dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (22 commits)
make cursors NORCU
nfs: get rid of fake root dentries
wind ->s_roots via ->d_sib instead of ->d_hash
shrink_dentry_tree(): unify the calls of shrink_dentry_list()
shrinking rcu_read_lock() scope in d_alloc_parallel()
d_walk(): shrink rcu_read_lock() scope
document dentry_kill()
adjust calling conventions of lock_for_kill(), fold __dentry_kill() into dentry_kill()
Document rcu_read_lock() use in select_collect2()
Shift rcu_read_{,un}lock() inside fast_dput()
simplify safety for lock_for_kill() slowpath
fold lock_for_kill() and __dentry_kill() into common helper
fold lock_for_kill() into shrink_kill()
shrink_dentry_list(): start with removing from shrink list
d_prune_aliases(): make sure to skip NORCU aliases
kill d_dispose_if_unused()
make to_shrink_list() return whether it has moved dentry to list
select_collect(): ignore dentries on shrink lists if they have positive refcounts
find_acceptable_alias(): skip NORCU aliases with zero refcount
fix a race between d_find_any_alias() and final dput() of NORCU dentries
...
Pull procfs updates from Christian Brauner:
- Revamp fs/filesystems.c
The file was a mess with a hand-rolled linked list in desperate need
of a cleanup. The filesystems list is now RCU-ified, /proc files can
be marked permanent from outside fs/proc/, and the string emitted
when reading /proc/filesystems is pre-generated and cached instead of
pointer-chasing and printfing entry by entry on every read.
The file is read frequently because libselinux reads it and is linked
into numerous frequently used programs (even ones you would not
suspect, like sed!). Scalability also improves since reference
maintenance on open/close is bypassed.
open+read+close cycle single-threaded (ops/s):
before: 442732
after: 1063462 (+140%)
open+read+close cycle with 20 processes (ops/s):
before: 606177
after: 3300576 (+444%)
A follow-up patch adds missing unlocks in some corner cases and
tidies things up.
- Relax the mount visibility check for subset=pid mounts
When procfs is mounted with subset=pid, all static files become
unavailable and only the dynamic pid information is accessible. In
that case there is no point in imposing the full mount visibility
restrictions on the mounter - everything that can be hidden in procfs
is already inaccessible. These restrictions prevented procfs from
being mounted inside rootless containers since almost all container
implementations overmount parts of procfs to hide certain
directories.
As part of this /proc/self/net is only shown in subset=pid mounts for
CAP_NET_ADMIN, reconfiguring subset=pid is rejected, the
SB_I_USERNS_VISIBLE superblock flag is replaced with an
FS_USERNS_MOUNT_RESTRICTED filesystem flag, fully visible mounts are
recorded in a list, and the mount restrictions are finally
documented.
- Protect ptrace_may_access() with exec_update_lock in procfs
Most uses of ptrace_may_access() in procfs should hold
exec_update_lock to avoid TOCTOU issues with concurrent privileged
execve() (like setuid binary execution).
This fixes the easy cases - the owner and visibility checks and the
FD link permission checks - with the gnarlier ones to follow later.
* tag 'vfs-7.2-rc1.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs: fix ups and tidy ups to /proc/filesystems caching
proc: protect ptrace_may_access() with exec_update_lock (FD links)
proc: protect ptrace_may_access() with exec_update_lock (part 1)
docs: proc: add documentation about mount restrictions
proc: handle subset=pid separately in userns visibility checks
proc: prevent reconfiguring subset=pid
proc: subset=pid: Show /proc/self/net only for CAP_NET_ADMIN
fs: cache the string generated by reading /proc/filesystems
sysfs: remove trivial sysfs_get_tree() wrapper
fs: RCU-ify filesystems list
fs: move SB_I_USERNS_VISIBLE to FS_USERNS_MOUNT_RESTRICTED
proc: allow to mark /proc files permanent outside of fs/proc/
namespace: record fully visible mounts in list
Pull misc vfs updates from Christian Brauner:
"Features:
- Reduce pipe->mutex contention by pre-allocating pages outside the
lock in anon_pipe_write().
anon_pipe_write() called alloc_page() once per page while holding
pipe->mutex. The allocation can sleep doing direct reclaim and runs
memcg charging, which extends the critical section and stalls any
concurrent reader on the same mutex. Now up to 8 pages are
pre-allocated before the mutex is taken, leftovers are recycled
into the per-pipe tmp_page[] cache before unlock, and any remainder
is released after unlock, keeping the allocator out of the critical
section on both sides. On a writers x readers sweep with 64KB
writes against a 1 MB pipe throughput improves 6-28% and average
write latency drops 5-22%; under memory pressure - when the cost of
holding the mutex across reclaim is highest - throughput improves
21-48% and latency drops 17-33%. The microbenchmark is added to
selftests.
- uaccess/sockptr: fix the ignored_trailing logic in
copy_struct_to_user() to behave as documented and the usize check
in copy_struct_from_sockptr() for user pointers, and add
copy_struct_{from,to}_bounce_buffer() and copy_struct_to_sockptr()
helpers for upcoming users (IPPROTO_SMBDIRECT, IPPROTO_QUIC).
- bpf: add a sleepable bpf_real_inode() kfunc that resolves the real
inode backing a dentry via d_real_inode(). On overlayfs the inode
attached to the dentry doesn't carry the underlying device
information; this is used by the filesystem restriction BPF program
that was merged into systemd.
- docs: add guidelines for submitting new filesystems, motivated by
the maintenance burden abandoned and untestable filesystems impose
on VFS developers, blocking infrastructure work like folio
conversions and iomap migration.
Fixes:
- libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
and drop the now-redundant assignments in callers. This began as a
one-line dma-buf fix for a path_noexec() warning; a pseudo
filesystem has no reason not to set SB_I_NOEXEC. All init_pseudo()
callers were audited: the only visible effect is on dma-buf where
SB_I_NOEXEC silences the warning.
- Handle set_blocksize() failures in legacy filesystems (bfs, hpfs,
qnx4, jfs, befs, affs, isofs, minix, ntfs3, omfs). Mounting a
device with a sector size > PAGE_SIZE crashed roughly half of them;
the rest had the same missing error handling pattern. Plus a
follow-up releasing the superblock buffer_head when setting the
minix v3 block size fails.
- mount: honour SB_NOUSER in the new mount API.
- fs/fcntl: fix a SOFTIRQ-unsafe lock order in fasync signaling by
switching the process-group paths of send_sigio() and send_sigurg()
from read_lock(&tasklist_lock) to RCU, matching the single-PID
path.
- vfs: add an FS_USERNS_DELEGATABLE flag and set it for NFS, fixing
delegated NFS mounts (fsopen() in a container with the mount
performed by a privileged daemon) that broke when non-init
s_user_ns was tied to FS_USERNS_MOUNT.
- selftests/namespaces: fix a hang in nsid_test where an unreaped
grandchild kept the TAP pipe write-end open, a waitpid(-1) race in
listns_efault_test, and a false FAIL on kernels without listns()
where the tests should SKIP.
- filelock: fix the break_lease() stub signature for
CONFIG_FILE_LOCKING=n.
- init/initramfs_test: wait for the async initramfs unpacking before
running; the test and do_populate_rootfs() share the parser state.
- fs/coredump: reduce redundant log noise in
validate_coredump_safety().
- iomap: pass the correct length to fserror_report_io() in
__iomap_write_begin().
- backing-file: fix the backing_file_open() kerneldoc.
Cleanups:
- initramfs: refactor the cpio hex header parsing to use hex2bin()
instead of the hand-rolled simple_strntoul() which is reverted, and
extend the initramfs KUnit tests to cover header fields with 0x
prefixes.
- Replace __get_free_pages() and friends with kmalloc()/kzalloc()
across quota, proc, ocfs2/dlm, nilfs2, nfs, nfsd, libfs, jfs, jbd2,
isofs, fuse, select, namespace, configfs, binfmt_misc, bfs, and the
do_mounts init code - part of the larger work of replacing page
allocator calls with kmalloc().
- Use clear_and_wake_up_bit() in unlock_buffer() and
journal_end_buffer_io_sync() instead of open-coding the sequence.
- Drop unused VFS exports: unexport drop_super_exclusive(), remove
start_removing_user_path_at(), and fold __start_removing_path()
into start_removing_path().
- fs/read_write: narrow the __kernel_write() export with
EXPORT_SYMBOL_FOR_MODULES().
- vfs: uapi: retire octal and hex constants in favor of (1 << n) for
the O_ flags. Finding a free bit for a new flag across the
architectures was needlessly hard with the mixed bases.
- dcache: add extra sanity checks of dead dentries in dentry_free()
via a new DENTRY_WARN_ONCE() that also prints d_flags.
- iov_iter: use kmemdup_array() in dup_iter() to harden the
allocation against multiplication overflow.
- fs/pipe: write to ->poll_usage only once.
- vfs: remove an always-taken if-branch in find_next_fd().
- dcache: use kmalloc_flex() for struct external_name in __d_alloc().
- namei: use QSTR() instead of QSTR_INIT() in path_pts().
- sync_file_range: delete dead S_ISLNK code.
- Comment fixes: retire a stale comment in fget_task_next() and fix
assorted spelling mistakes"
* tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (73 commits)
backing-file: fix backing_file_open() kerneldoc parameter
iomap: pass the correct len to fserror_report_io in __iomap_write_begin
vfs: add FS_USERNS_DELEGATABLE flag and set it for NFS
filelock: fix break_lease() stub signature for CONFIG_FILE_LOCKING=n
vfs: uapi: retire octal and hex numbers in favor of (1 << n) for O_ flags
bpf: add bpf_real_inode() kfunc
fs/read_write: Do not export __kernel_write() to the entire world
libfs: drop redundant SB_I_NOEXEC/SB_I_NODEV in init_pseudo() callers
libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
mount: honour SB_NOUSER in the new mount API
fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling
selftests/pipe: add pipe_bench microbenchmark
fs/pipe: pre-allocate pages outside pipe->mutex in anon_pipe_write
fs: retire stale comment in fget_task_next()
fs: fix spelling mistakes in comment
bfs: replace get_zeroed_page() with kzalloc()
binfmt_misc: replace __get_free_page() with kmalloc()
configfs: replace __get_free_pages() with kzalloc()
fs/namespace: use __getname() to allocate mntpath buffer
fs/select: replace __get_free_page() with kmalloc()
...
Pull simple_xattr updates from Christian Brauner:
"This reworks the simple xattr api to make it more efficient and easier
to use for all consumers.
The simple_xattr hash table moves from the inode into a per-superblock
cache, removing the per-inode overhead for the common case of few or
no xattrs. The interface now passes struct simple_xattrs ** so lazy
allocation is handled internally instead of by every caller, kernfs
xattr operations on kernfs nodes shared between multiple superblocks
are properly serialized, and tmpfs constructs "security.foo" xattr
names with kasprintf() instead of kmalloc() plus two memcpy()s.
A follow-up fix links kernfs nodes to their parent before the LSM init
hook runs: with the per-sb cache kernfs_xattr_set() computes the cache
via kernfs_root(kn), which faulted on a freshly allocated node when
selinux_kernfs_init_security() called into it - reproducible as a NULL
pointer dereference on the first cgroup mkdir on SELinux-enabled
systems.
On top of this bpffs gains support for trusted.* and security.* xattrs
so that user space and BPF LSM programs can attach metadata - for
example a content hash or a security label - to pinned objects and
directories and inspect it uniformly like on other filesystems. The
store is in-memory and non-persistent, living only for the lifetime of
the mount like everything else in bpffs"
* tag 'vfs-7.2-rc1.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
bpf: Add simple xattr support to bpffs
kernfs: link kn to its parent before the LSM init hook
simpe_xattr: use per-sb cache
simple_xattr: change interface to pass struct simple_xattrs **
tmpfs: simplify constructing "security.foo" xattr names
kernfs: fix xattr race condition with multiple superblocks
Pull iomap updates from Christian Brauner:
- Add the vfs infrastructure required to implement fs-verity support
for XFS with a post-EOF merkle tree: fsverity generates and stores a
zero-block hash, and iomap learns to verify data on buffered reads,
to handle fsverity during writeback via the new IOMAP_F_FSVERITY
flag, and to write fsverity metadata through iomap_fsverity_write().
- Skip the memset of the iomap in iomap_iter() once the iteration is
done. In high-IOPS scenarios (4k randread NVMe polling via io_uring)
the pointless memset wasted memory write bandwidth; this improves
IOPS by about 5% on ext4 and xfs.
- Add balance_dirty_pages_ratelimited() to iomap_zero_iter(), aligning
it with iomap_write_iter(). This prepares for the exFAT iomap
conversion where zeroing beyond valid_size can trigger large-scale
zeroing operations that caused memory pressure without throttling.
- Remove the over-strict inline data boundary check. If a filesystem
provides a valid inline_data pointer and length there is no reason to
require that inline data must not cross a page boundary.
- Don't make REQ_POLLED imply REQ_NOWAIT, matching the earlier
equivalent block layer fix: there are valid cases to poll for I/O
completion without REQ_NOWAIT, and REQ_NOWAIT for file system writes
is currently not supported as writes aren't idempotent.
- Introduce IOMAP_F_ZERO_TAIL for filesystems that maintain a separate
valid data length (exFAT, NTFS). For a write starting at or beyond
valid_size, __iomap_write_begin() now zeroes only the tail portion of
the block while preserving valid data before it, instead of leaving
stale data in the page cache. The flag is also added to the iomap
trace event strings.
* tag 'vfs-7.2-rc1.iomap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
iomap: Add IOMAP_F_ZERO_TAIL flag to trace event strings
iomap: introduce iomap_fsverity_write() for writing fsverity metadata
iomap: teach iomap to read files with fsverity
iomap: introduce IOMAP_F_FSVERITY and teach writeback to handle fsverity
fsverity: generate and store zero-block hash
iomap: introduce IOMAP_F_ZERO_TAIL flag
iomap: don't make REQ_POLLED imply REQ_NOWAIT
iomap: remove over-strict inline data boundary check
iomap: add dirty page control to iomap_zero_iter
iomap: avoid memset iomap when iter is done
Pull eventpoll updates from Christian Brauner:
- eventpoll clarity refactor
The recent eventpoll UAF fixes (a6dc643c69 and follow-ups) depended
on invariants in fs/eventpoll.c that were nowhere documented and had
to be reverse-engineered from the code: the lifetime relationships
between struct eventpoll, struct epitem, and struct file, the three
removal paths coordinating via epi_fget() pins and ep->mtx, the
ovflist sentinel-encoded scan state machine, the POLLFREE
release/acquire handshake, and the loop / path check globals
serialized by epnested_mutex. The fixes were correct but the next
person to touch this code would hit the same learning curve.
This series codifies those invariants in source and tightens the
surrounding structure. No functional changes intended:
- Documentation: a top-of-file overview with field-protection
tables for struct eventpoll and struct epitem, a section
gathering the loop-check / path-check globals next to their
declarations, labelled comments on the two sides of the POLLFREE
handshake, refreshed comments on epi_fget() and ep_remove_file(),
and a docblock on ep_clear_and_put() that names its two-pass
structure as load-bearing.
- Mechanical renames: ep_refcount_dec_and_test() -> ep_put() to
pair with ep_get(), attach_epitem() -> ep_attach_file() for
ep_remove_file() symmetry, the unused depth argument dropped from
epoll_mutex_lock(), and the CONFIG_KCMP block relocated next to
CONFIG_COMPAT so the hot-path code is contiguous.
- Helper extraction: ep_insert() splits into ep_alloc_epitem() and
ep_register_epitem(), ep_clear_and_put()'s two passes become
ep_drain_pollwaits() and ep_drain_tree() so the ordering
invariant is enforced by the call sequence rather than
convention, the per-event delivery loop body becomes
ep_deliver_event(), and the ep->mtx + epnested_mutex acquisition
dance lifts out of do_epoll_ctl() into ep_ctl_lock() /
ep_ctl_unlock().
- Sentinel and predicate cleanup: the EP_UNACTIVE_PTR overload is
hidden behind named helpers (ep_is_scanning, epi_on_ovflist,
...), epi->next is renamed to epi->ovflist_next, and the boolean
predicates return bool.
- The per-CTL_ADD scratch state (tfile_check_list, path_count[],
inserting_into) moves from file-scope globals into a
stack-allocated struct ep_ctl_ctx plumbed through the loop / path
check chain.
Two follow-up fixes are included: missing kernel-doc for the new @ctx
parameters, and restoring the EP_UNACTIVE_PTR sentinel for
ctx->tfile_check_list - replacing it with NULL termination broke
ep_remove_file()'s "never listed" check for the list tail, causing a
syzbot-reported use-after-free.
- io_uring related epoll cleanups
One of the nastier things about epoll is how it allows nesting
contexts inside each other, leading to the necessity of loop
detection and the issues that have come with that. There is no reason
to support nesting on the io_uring side, so contain the damage and
disallow nested contexts from there: eventpoll gains a file based
control interface and struct epoll_filefd is renamed to epoll_key.
The io_uring side proper goes on top of this through the block tree.
- Fix epoll_wait() reporting false negatives
ep_events_available() checks ep->rdllist and ep_is_scanning() without
a lock and can race with a concurrent scan such that neither check
sees the events, causing epoll_wait() with a zero timeout to wrongly
report no events even though events are available. A sequence lock
closes the race and a reproducer is added to the eventpoll selftests.
* tag 'vfs-7.2-rc1.eventpoll' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (25 commits)
eventpoll: restore EP_UNACTIVE_PTR sentinel for ctx->tfile_check_list
eventpoll: Fix epoll_wait() report false negative
selftests/eventpoll: Add test for multiple waiters
eventpoll: add missing kernel-doc for @ctx function parameters
eventpoll: rename struct epoll_filefd to epoll_key
eventpoll: add file based control interface
eventpoll: export is_file_epoll()
eventpoll: pass struct epoll_filefd through ep_find() and ep_insert()
eventpoll: hoist CTL_ADD scratch state into struct ep_ctl_ctx
eventpoll: use bool for predicate helpers
eventpoll: rename epi->next and txlist for clarity
eventpoll: wrap EP_UNACTIVE_PTR in typed sentinel helpers
eventpoll: extract lock dance from do_epoll_ctl() into ep_ctl_lock()
eventpoll: extract ep_deliver_event() from ep_send_events()
eventpoll: split ep_clear_and_put() into drain helpers
eventpoll: split ep_insert() into alloc + register stages
eventpoll: relocate KCMP helpers near compat syscalls
eventpoll: rename attach_epitem() to ep_attach_file()
eventpoll: drop unused depth argument from epoll_mutex_lock()
eventpoll: rename ep_refcount_dec_and_test() to ep_put()
...
Pull buffer_head updates from Christian Brauner:
"This removes b_end_io from struct buffer_head.
Instead of setting bio->bi_end_io to end_bio_bh_io_sync() which then
calls bh->b_end_io(), the new bh_submit() and __bh_submit() interfaces
set bio->bi_end_io to the appropriate completion handler directly,
replacing two indirect function calls in the completion path with one.
It is also one fewer function pointer in the middle of a writable data
structure that can be corrupted, it shrinks struct buffer_head from
104 to 96 bytes allowing roughly 7% more buffer_heads to be cached in
the same amount of memory, and it removes some atomic operations as
the buffer refcount is no longer incremented before calling the end_io
handler.
All in-tree users (fs/buffer.c itself, ext4, jbd2, ocfs2, gfs2,
nilfs2, and md-bitmap) are converted, and submit_bh(),
mark_buffer_async_write(), and end_buffer_write_sync() are removed"
* tag 'vfs-7.2-rc1.bh' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (34 commits)
buffer: Remove end_buffer_write_sync()
buffer: Change calling convention for end_buffer_read_sync()
buffer: Remove b_end_io
buffer: Remove submit_bh()
md-bitmap: Convert read_file_page and write_file_page to bh_submit()
nilfs2: Convert nilfs_mdt_submit_block to bh_submit()
nilfs2: Convert nilfs_gccache_submit_read_data to bh_submit()
nilfs2: Convert nilfs_btnode_submit_block to bh_submit()
buffer: Remove mark_buffer_async_write()
gfs2: Convert gfs2_aspace_write_folio to bh_submit()
gfs2: Remove use of b_end_io in gfs2_meta_read_endio()
gfs2: Convert gfs2_dir_readahead to bh_submit()
gfs2: Convert gfs2_metapath_ra to bh_submit()
ocfs2: Convert ocfs2_write_super_or_backup to bh_submit()
ocfs2: Convert ocfs2_read_blocks to bh_submit()
ocfs2: Convert ocfs2_read_block to bh_submit()
ocfs2: Convert ocfs2_write_block to bh_submit()
jbd2: Convert jbd2_write_superblock() to bh_submit()
jbd2: Convert journal commit to bh_submit()
ext4: Convert ext4_commit_super() to bh_submit()
...
Pull vfs writeback updates from Christian Brauner:
- Fix a race between cgroup_writeback_umount() and inode_switch_wbs()
When a container exits, a race between cgroup_writeback_umount() and
inode_switch_wbs()/cleanup_offline_cgwb() can trigger "VFS: Busy
inodes after unmount" followed by a use-after-free on percpu
counters.
There is a window between inode_prepare_wbs_switch() returning true
(having passed the SB_ACTIVE check and grabbed the inode) and the
subsequent wb_queue_isw() call: if cgroup_writeback_umount() observes
the global isw_nr_in_flight counter as non-zero but flush_workqueue()
finds nothing queued yet, it returns early - leaving a held inode
reference that blocks evict_inodes() and a later iput() that hits
freed percpu counters.
The race is closed by covering the window from
inode_prepare_wbs_switch() through wb_queue_isw() with an RCU
read-side critical section and synchronizing in the umount path.
On top of that the now-dead rcu_barrier() left over from the
queue_rcu_work() era is removed, and the global
synchronize_rcu()/flush_workqueue() pair is replaced with a per-sb
in-flight counter plus pin/unpin/drain helpers so umount no longer
serializes against switch activity on unrelated superblocks.
Under cgroup writeback churn on a 16 vCPU guest this takes umount
latency from ~92-138ms p50 down to ~5-8ms p50 and the cumulative cost
of cgroup_writeback_umount() from ~62ms to ~4us per call.
The initial race fix is kept separate and minimal so it backports
cleanly to stable trees that still queue switches via
queue_rcu_work().
- Improve write performance with RWF_DONTCACHE
Dirty DONTCACHE pages are now tracked per bdi_writeback so that the
writeback flusher can be kicked in a targeted fashion for
IOCB_DONTCACHE writes instead of relying on global writeback, and the
PG_dropbehind flag is preserved when a folio is split.
* tag 'vfs-7.2-rc1.writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
mm: kick writeback flusher for IOCB_DONTCACHE with targeted dirty tracking
mm: track DONTCACHE dirty pages per bdi_writeback
mm: preserve PG_dropbehind flag during folio split
writeback: use a per-sb counter to drain inode wb switches at umount
writeback: drop now-unnecessary rcu_barrier() in cgroup_writeback_umount()
writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs()
Pull vfs superblock updates from Christian Brauner:
"This retires sget().
CIFS plus the two ext4 KUnit tests (extents-test, mballoc-test) were
the last in-tree callers, and all three convert cleanly to sget_fc().
That lets sget() and its prototype come out, taking ~60 lines that
only existed to be kept in lockstep with sget_fc() on every
publish-path change"
* tag 'vfs-7.2-rc1.super' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs: retire sget()
smb: client: convert cifs_smb3_do_mount() to sget_fc()
ext4: convert mballoc KUnit test to sget_fc()
ext4: convert extents KUnit test to sget_fc()
Pull openat2 updates from Christian Brauner:
"Features:
- Add O_EMPTYPATH to openat(2)/openat2(2). To get an operable file
descriptor from an O_PATH file descriptor it is possible to use
openat(fd, ".", O_DIRECTORY) for directories, but other file types
require going through open("/proc/<pid>/fd/<nr>") and thus depend
on a functioning procfs.
With O_EMPTYPATH an empty path string is accepted and LOOKUP_EMPTY
is set at path resolution time, allowing to reopen the file behind
the file descriptor directly. Selftests are included.
- Add an OPENAT2_REGULAR flag for openat2(2) which refuses to open
anything but regular files with the new EFTYPE error code.
This implements the "ability to only open regular files" feature
requested by userspace via uapi-group.org and protects services
from being redirected to fifos, device nodes, and friends.
All atomic_open implementations were audited for OPENAT2_REGULAR
handling. Explicit checks were added to ceph, gfs2, nfs (v4), and
cifs/smb - these are the filesystems whose atomic_open can
encounter an existing non-regular file and would otherwise call
finish_open() on it or return a misleading error code.
The remaining implementations (9p, fuse, vboxsf, nfs v2/v3) only
call finish_open() on freshly created files and use
finish_no_open() for lookup hits, letting the VFS catch non-regular
files via the do_open() safety net.
Cleanups:
- Migrate the openat2 selftests to the kselftest harness and move
them under selftests/filesystems/. The tests were written in the
early days of selftests' TAP support and the modern kselftest
harness is much easier to follow and maintain. The contents of the
tests are unchanged and the new emptypath tests are ported on top.
- Make the LAST_XXX last-type constants private to fs/namei.c. The
only user outside of fs/namei.c was ksmbd which only needs to know
whether the last component is a regular one, so
vfs_path_parent_lookup() now performs the LAST_NORM check
internally. The ints are replaced with a dedicated enum last_type"
* tag 'vfs-7.2-rc1.openat2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
vfs: replace ints with enum last_type for LAST_XXX
vfs: make LAST_XXX private to fs/namei.c
selftests: openat2: port emptypath_test to kselftest harness
kselftest/openat2: test for OPENAT2_REGULAR flag
openat2: new OPENAT2_REGULAR flag support
openat2: introduce EFTYPE error code
selftest: add tests for O_EMPTYPATH
vfs: add O_EMPTYPATH to openat(2)/openat2(2)
selftests: openat2: migrate to kselftest harness
selftests: openat2: switch from custom ARRAY_LEN to ARRAY_SIZE
selftests: openat2: move helpers to header
selftests: move openat2 tests to selftests/filesystems/
Pull misc kernel updates from Christian Brauner:
"Fixes
- rhashtable: give each instance its own lockdep class
syzbot reported a circular locking dependency between ht->mutex and
fs_reclaim via the simple_xattrs rhashtable being torn down during
inode eviction.
The predicted deadlock cannot occur: rhashtable_free_and_destroy()
cancels the deferred worker before taking ht->mutex and
acquisitions on distinct rhashtables are on distinct mutexes.
Lockdep flags a cycle anyway because every ht->mutex in the kernel
shared the single static lockdep class from
rhashtable_init_noprof().
The lockdep key is lifted to a per-call-site static key so every
rhashtable instance gets its own class.
- selftests/clone3: fix misuse of the libcap library interface in the
cap_checkpoint_restore test and remove unused variables
- selftests/pid_namespace: compute the pid_max test limits
dynamically instead of hardcoding values below the kernel-enforced
minimum of PIDS_PER_CPU_MIN * num_possible_cpus() which made the
tests fail on machines with many possible CPUs
- selftests: fix the Makefile TARGETS entry for nsfs which wasn't
adjusted when the tests moved under filesystems/
Cleanups
- ipc/sem.c: use unsigned int for nsops to match the declaration in
syscalls.h"
* tag 'kernel-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
selftests/clone3: remove unused variables
selftests/clone3: fix libcap interface usage
ipc/sem.c: use unsigned int for nsops
selftests: Fix Makefile target for nsfs
rhashtable: give each instance its own lockdep class
selftests/pid_namespace: compute pid_max test limits dynamically
Pull task_exec_state updates from Christian Brauner:
"This introduces a new per-task task_exec_state structure and relocates
the dumpable mode and the user namespace captured at execve() from
mm_struct onto it. It stays attached to the task for its full
lifetime.
__ptrace_may_access() and several /proc owner and visibility checks
need to consult two pieces of state for any observable task, including
zombies that have already gone through exit_mm(): the dumpable mode
and the user namespace captured at execve(). Both live on mm_struct
today, which exit_mm() clears from the task long before the task is
reaped. A reader that races with do_exit() observes task->mm == NULL
and either fails the check or falls back to init_user_ns - which
denies legitimate access to non-dumpable zombies that were running in
a nested user namespace.
mm_struct loses ->user_ns and the dumpability bits in ->flags.
MMF_DUMPABLE_BITS is reserved so the MMF_DUMP_FILTER_* layout exposed
via /proc/<pid>/coredump_filter stays stable. task->user_dumpable and
its exit_mm() snapshot are removed.
task_exec_state is the privilege domain established by an execve().
Within a thread group it is shared via refcount; across thread groups
each task has its own:
- CLONE_VM siblings (thread-group members, io_uring workers)
refcount-share the parent's exec_state.
- Non-CLONE_VM clones (fork(), vfork() without CLONE_VM) allocate a
fresh exec_state inheriting the parent's dumpable mode and user_ns.
- execve() in the child allocates a fresh instance and installs it
under task_lock + exec_update_lock via task_exec_state_replace().
- Credential changes (setresuid, capset, ...) and
prctl(PR_SET_DUMPABLE) update dumpability on the current task's
exec_state, i.e., on the thread group's shared instance.
On top of this exec_mmap() no longer tears down the old mm while
holding exec_update_lock for writing and cred_guard_mutex. Neither
lock is needed for that: exec_update_lock only exists to make the mm
swap atomic with the later commit_creds() and all its readers operate
on the new mm; none looks at the detached old mm.
The cost was real: __mmput() runs exit_mmap() over the entire old
address space and can block in exit_aio() waiting for in-flight AIO,
so execve() of a large process blocked ptrace_attach() and every
exec_update_lock reader for the duration of the teardown.
The old mm is now stashed in bprm->old_mm and released from
setup_new_exec() after both locks are dropped, with a backstop in
free_bprm() for the error paths"
* tag 'kernel-7.2-rc1.task_exec_state' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
exec: free the old mm outside the exec locks
exec_state: relocate dumpable information
ptrace: add ptracer_access_allowed()
exec: introduce struct task_exec_state
sched/coredump: introduce enum task_dumpable
Pull vfs casefolding updates from Christian Brauner:
"This exposes the case folding behavior of local filesystems so that
file servers - nfsd, ksmbd, and user space file servers - can report
the actual behavior to clients instead of guessing.
Filesystems report case-insensitive and case-nonpreserving behavior
via new file_kattr flags in their fileattr_get implementations. fat,
exfat, ntfs3, hfs, hfsplus, xfs, cifs, nfs, vboxsf, and isofs are
wired up. Local filesystems that are not explicitly handled default to
the usual POSIX behavior of case-sensitive and case-preserving.
nfsd uses this to report case folding via NFSv3 PATHCONF and to
implement the NFSv4 FATTR4_CASE_INSENSITIVE and FATTR4_CASE_PRESERVING
attributes - both have been part of the NFS protocols for decades to
support clients on non-POSIX systems - and ksmbd reports it via
FS_ATTRIBUTE_INFORMATION. Exposing the information through the
fileattr uapi covers user space file servers.
The immediate motivation is interoperability: Windows NFS clients
hard-require servers to report case-insensitivity for Win32
applications to work correctly, and a client that knows the server is
case-insensitive can avoid issuing multiple LOOKUP/READDIR requests
searching for case variants.
The Linux NFS client already grew support for case-insensitive shares
years ago in support of the Hammerspace NFS server - negative dentry
caching must be disabled (a lookup for "FILE.TXT" failing must not
cache a negative entry when "file.txt" exists) and directory change
invalidation must drop cached case-folded name variants. Such servers
often operate in multi-protocol environments where a single file
service instance caters to both NFS and SMB clients, and nfsd needs to
report case folding properly to participate as a first-class citizen
there.
A follow-up series brings fixes for the initial work: the nfsd
case-info probe now uses kernel credentials, maps -ESTALE to
NFS3ERR_STALE, and has its cost capped across READDIR entries; the nfs
client avoids transiently zeroed case capability bits during the probe
and skips the pathconf probe when neither field is consumed; the
FS_CASEFOLD_FL semantics are clarified in the UAPI header; and the
tools UAPI headers are synced"
* tag 'vfs-7.2-rc1.casefold' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (22 commits)
nfsd: Cap case-folding probe cost across READDIR entries
nfsd: Map -ESTALE from case probe to NFS3ERR_STALE
nfsd: Use kernel credentials for case-info probe
fs: Clarify FS_CASEFOLD_FL semantics in UAPI header
nfs: Skip pathconf probe when neither field is consumed
nfs: Avoid transient zeroed case capability bits during probe
tools headers UAPI: Sync case-sensitivity flags from linux/fs.h
ksmbd: Report filesystem case sensitivity via FS_ATTRIBUTE_INFORMATION
nfsd: Implement NFSv4 FATTR4_CASE_INSENSITIVE and FATTR4_CASE_PRESERVING
nfsd: Report export case-folding via NFSv3 PATHCONF
isofs: Implement fileattr_get for case sensitivity
vboxsf: Implement fileattr_get for case sensitivity
nfs: Implement fileattr_get for case sensitivity
cifs: Implement fileattr_get for case sensitivity
xfs: Report case sensitivity in fileattr_get
hfsplus: Report case sensitivity in fileattr_get
hfs: Implement fileattr_get for case sensitivity
ntfs3: Implement fileattr_get for case sensitivity
exfat: Implement fileattr_get for case sensitivity
fat: Implement fileattr_get for case sensitivity
...
Pull vfs directory delegations from Christian Brauner:
"This contains the VFS prerequisites for supporting directory
delegations in nfsd via CB_NOTIFY callbacks.
The filelock core gains support for ignoring delegation breaks for
directory change events together with an inode_lease_ignore_mask()
helper, and fsnotify gains fsnotify_modify_mark_mask() and a
FSNOTIFY_EVENT_RENAME data type.
With this in place nfsd can request delegations on directories and set
up inotify watches to trigger sending CB_NOTIFY events to clients
instead of having every directory change break the delegation.
New tracepoints are added to fsnotify() and to the start of
break_lease(), and trace_break_lease_block() is passed the currently
blocking lease instead of the new one.
A follow-up fix moves the LEASE_BREAK_* flags out of
#ifdef CONFIG_FILE_LOCKING to fix the build for CONFIG_FILE_LOCKING=n
configurations"
* tag 'vfs-7.2-rc1.directory.delegations' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
filelock: move LEASE_BREAK_* flags out of #ifdef CONFIG_FILE_LOCKING
fsnotify: add FSNOTIFY_EVENT_RENAME data type
fsnotify: add fsnotify_modify_mark_mask()
fsnotify: new tracepoint in fsnotify()
filelock: add an inode_lease_ignore_mask helper
filelock: add a tracepoint to start of break_lease()
filelock: add support for ignoring deleg breaks for dir change events
filelock: pass current blocking lease to trace_break_lease_block() rather than "new_fl"
Pull vfs inode updates from Christian Brauner:
"This extends the lockless ->i_count handling.
iput() could already decrement any value greater than one locklessly
but acquiring a reference always required taking inode->i_lock. Now
acquiring a reference is lockless as long as the count was already at
least 1, i.e., only the 0->1 and 1->0 transitions take the lock.
This avoids the lock for the common cases of nfs calling into the
inode hash and btrfs using igrab(). Cleanup-wise icount_read_once() is
added to line up with inode_state_read_once() and the open-coded
->i_count loads across the tree are converted, and ihold() is
relocated and tidied up.
On top of that some stale lock ordering annotations are retired from
the inode hash code: iunique() no longer takes the hash lock since the
inode hash became RCU-searchable and s_inode_list_lock is no longer
taken under the hash lock either"
* tag 'vfs-7.2-rc1.inode' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs: retire stale lock ordering annotations from inode hash
fs: allow lockless ->i_count bumps as long as it does not transition 0->1
fs: relocate and tidy up ihold()
fs: add icount_read_once() and stop open-coding ->i_count loads
Pull exportfs updates from Christian Brauner:
"This cleans up the exportfs support for block-style layouts that
provide direct block device access: the operations for layout-based
block device access are split out of struct export_operations into a
separate header, ->commit_blocks() no longer takes a struct iattr
argument, and the way support for layout-based block device access is
detected is reworked.
nfsd's blocklayout code also stops honoring loca_time_modify. This is
preparation for supporting export of more than a single device per
file system"
* tag 'vfs-7.2-rc1.exportfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
exportfs,nfsd: rework checking for layout-based block device access support
exportfs: don't pass struct iattr to ->commit_blocks
exportfs: split out the ops for layout-based block device access
nfsd/blocklayout: always ignore loca_time_modify
Pull bpf filesystem kfunc fix from Christian Brauner:
"The bpf_set_dentry_xattr() and bpf_remove_dentry_xattr() kfuncs locked
the inode of the supplied dentry without checking whether the dentry
is negative.
Passing a negative dentry (e.g., from security_inode_create) caused a
NULL pointer dereference. Negative dentries now fail with EINVAL. The
WARN_ON(!inode) in the bpf xattr permission helpers is dropped as well
since it could be triggered the same way, amounting to a denial of
service on systems with panic_on_warn enabled"
* tag 'vfs-7.2-rc1.kfunc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
bpf: fix crash in bpf_[set|remove]_dentry_xattr for negative dentries
Pull ARM fixes from Russell King:
- Avoid KASAN instrumentation of half-word IO
- Use a byte load for KASAN shadow stack
- Fix kexec and hibernation with PAN
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux:
ARM: 9476/1: mm: fix kexec and hibernation with CONFIG_CPU_TTBR0_PAN
ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
ARM: 9474/1: io: avoid KASAN instrumentation of raw halfword I/O
Pull clk fixes from Stephen Boyd:
"Fixes for the Qualcomm and Google GS101 clk drivers:
- Skip parking clks on some Qualcomm platforms so that the recovery
console keeps working
- Fix Google GS101 resume by using the correct div register"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: qcom: dispcc-sc8280xp: Don't park mdp_clk_src at registration time
clk: samsung: gs101: Fix missing USI7_USI DIV clock in peric0_clk_regs
clk: qcom: x1e80100-dispcc: Stop disp_cc_mdss_mdp_clk_src from getting parked
Pull debugobjects fix from Ingo Molnar:
- Fix potential debugobjects deadlock on PREEMPT_RT kernels (Waiman
Long)
* tag 'core-urgent-2026-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobjects: Don't call fill_pool() in early boot hardirq context
Pull i2c fixes from Wolfram Sang:
"The biggest news here is that this is my last pull request as I2C
maintainer after 13.5 years. Starting with the 7.2 cycle, Andi Shyti
is taking over who helped me greatly maintaining the host drivers for
a while now. Thank you, Andi, and good luck with the subsystem. I'll
be around for help, of course.
Technically, there are two patches which might be a tad large for this
late cycle, but most of them is explaining comments, so I think they
are suitable.
- MAINTAINERS:
- hand over I2C maintainership to Andi
- minor updates
- rust: fix I2cAdapter refcount double increment
- imx: keep clock and pinctrl states consistent in runtime PM
- imx-lpi2c: fix DMA resource leaks on PIO fallback
- qcom-cci: fix NULL pointer dereference on remove
- riic: fix reset refcount leak on resume_noirq error path
- stm32f7: account for analog filter in timing computation
- tegra:
- fix suspend/resume handling in NOIRQ phase
- update Tegra410 I2C timings to match hardware specs"
* tag 'i2c-for-7.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: mux-gpio: name correct maintainer
MAINTAINERS: hand over I2C to Andi Shyti
i2c: imx-lpi2c: fix resource leaks switching to devm_dma_request_chan()
MAINTAINERS: i2c: designware: Remove inactive reviewer
i2c: tegra: Fix NOIRQ suspend/resume
i2c: tegra: Update Tegra410 I2C timing parameters
i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()
i2c: stm32f7: fix timing computation ignoring i2c-analog-filter
i2c: imx: fix clock and pinctrl state inconsistency in runtime PM
i2c: riic: fix refcount leak in riic_i2c_resume_noirq()
rust: i2c: fix I2cAdapter refcounts double increment
Pull pin control fixes from Linus Walleij:
- Two fixes for the mcp23s08 driver.
- Revert an earlier fix to the AMD pin controller that was all wrong. A
proper fix is being developed.
* tag 'pinctrl-v7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
Revert "pinctrl-amd: enable IRQ for WACF2200 touchscreen on Lenovo Yoga 7 14AGP11"
pinctrl: mcp23s08: Read spi-present-mask as u8 not u32
pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
Pull drm fixes from Dave Airlie:
"Looks like it's settled down a bit more thankfully. Small changes
across the board, amdgpu/xe leading with some colorop changes in the
core/amd. Otherwise some misc driver fixes.
colorop:
- make lut interpolation mutable
- track colorop updates correctly
amdgpu:
- UserQ fix
- Userptr fix
- MCCS freesync fix
- track colorop changes correctly
amdkfd:
- Fix an event information leak
- Events bounds check fix
- Trap cleanup fix
i915:
- Check supported link rates DPCD read
- Fix phys BO pread/pwrite with offset
xe:
- fix oops in suspend/shutdown without display
- RAS fixes
- Use HW_ERR prefix in log
- include all registered queues in TLB invalidation
- Fix refcount leak in xe_range_tree in error paths
- fix job timeout recovery for unstarted jobs and kernel queues
amdxdna:
- fix possible leak of mm_struct
ivpu:
- fix integer truncation
vc4:
- fix leak in krealloc() error handling
virtio:
- fix dma_fence ref-count leak"
* tag 'drm-fixes-2026-06-13' of https://gitlab.freedesktop.org/drm/kernel: (24 commits)
accel/amdxdna: Fix mm_struct reference leak in aie2_populate_range()
drm/xe: fix job timeout recovery for unstarted jobs and kernel queues
drm/xe: fix refcount leak in xe_range_fence_insert()
drm/xe: include all registered queues in TLB invalidation
drm/xe/hw_error: Use HW_ERR prefix in log
drm/xe/drm_ras: Add per node cleanup action
drm/xe/drm_ras: Make counter allocation drm managed
drm/xe/display: fix oops in suspend/shutdown without display
drm/amd/display: use plane color_mgmt_changed to track colorop changes
drm/atomic: track individual colorop updates
drm/colorop: make lut(1/3)d_interpolation props correctly behave as mutable
drm/colorop: Remove read-only comments from interpolation fields
drm/i915/gem: Fix phys BO pread/pwrite with offset
drm/vc4: fix krealloc() memory leak
drm/virtio: Fix driver removal with disabled KMS
drm/i915/edp: Check supported link rates DPCD read
accel/ivpu: Fix signed integer truncation in IPC receive
drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()
drm/amd/display: Consult MCCS FreeSync cap only if requested & supported
drm/amdkfd: Unwind debug trap enable on copy_to_user failure
...
Pull pci fix from Bjorn Helgaas:
- Add Frank Li as PCI endpoint reviewer (Frank Li)
* tag 'pci-v7.1-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
MAINTAINERS: Add Frank Li as PCI endpoint reviewer
Pull spi fixes from Mark Brown:
"A couple of driver specific fixes: a small targeted fix for hardware
error handling on DesignWare controllers and another for handling of
custom chip select management on Qualcomm GENI controllers"
* tag 'spi-fix-v7.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: dw: fix race between IRQ handler and error handler on SMP
spi: qcom-geni: Fix cs_change handling on the last transfer
Pull io_uring fixes from Jens Axboe:
- Tweak for an off-by-one in the CQ ring accounting for the min wait
support.
- Don't truncate end buffer length for a bundle, as the transfer might
not happen. It's not required in the first place, as the completion
side handles this condition already.
* tag 'io_uring-7.1-20260611' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/wait: fix min_timeout behavior
io_uring/kbuf: don't truncate end buffer for bundles
Pull USB / Thunderbolt fixes from Greg KH:
"Here are some small bugfixes for USB serial and Thunderbolt drivers
for some reported and found issues. Included in here are:
- usb serial overflow bugs fixed
- new usb serial device id
- thunderbolt validation fixes for reported issues
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-7.1-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: kl5kusb105: fix bulk-out buffer overflow
USB: serial: option: add usb-id for Dell Wireless DW5826e-m
USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()
USB: serial: io_ti: fix heap overflow in get_manuf_info()
thunderbolt: Limit XDomain response copy to actual frame size
thunderbolt: Validate XDomain request packet size before type cast
thunderbolt: Clamp XDomain response data copy to allocation size
thunderbolt: Bound root directory content to block size
thunderbolt: Reject zero-length property entries in validator
Pull staging driver fixes from Greg KH:
"Here are two small bugfixes for a staging driver to fix a
much-reported issue.
The fixes are for the rtl8723bs driver and it's something that many
scanning tools keep tripping over in convoluted ways (and seems to be
able to be triggered by network traffic)
These fixes have been in linux-next for many weeks with no reported
issues, sorry for the delay in getting them to you"
* tag 'staging-7.1-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction
staging: rtl8723bs: fix buffer over-read in rtw_update_protection
Pull char/misc driver fixes from Greg KH:
"Here are some small driver fixes for 7.1-final to resolve some
reported issues. Included in here are:
- slimbus qcom driver bugfixes
- nvmem driver bugfixes
- fastrpc driver bugfixes
- stratix10 firmware driver bugfixes
All of these have been in linux-next for over a week with no
reported issues"
* tag 'char-misc-7.1-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc: fastrpc: fix use-after-free race in fastrpc_map_create
misc: fastrpc: Fix NULL pointer dereference in rpmsg callback
misc: fastrpc: fix DMA address corruption due to find_vma misuse
misc: fastrpc: fix use-after-free of fastrpc_user in workqueue context
slimbus: qcom-ngd-ctrl: Avoid ABBA on tx_lock/ctrl->lock
slimbus: qcom-ngd-ctrl: Balance pm_runtime enablement for NGD
slimbus: qcom-ngd-ctrl: Initialize controller resources in controller
slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd
slimbus: qcom-ngd-ctrl: Correct PDR and SSR cleanup ownership
slimbus: qcom-ngd-ctrl: Fix probe error path ordering
slimbus: qcom-ngd-ctrl: Fix up platform_driver registration
slimbus: qcom-ngd-ctrl: fix OF node refcount
nvmem: core: fix use-after-free bugs in error paths
nvmem: layouts: onie-tlv: fix hang on unknown types
firmware: stratix10-rsu: Fix NULL deref on rsu_send_msg() timeout in probe
firmware: stratix10-svc: Don't fail probe when async ops unsupported
firmware: stratix10-svc: Return -EOPNOTSUPP when ATF async unsupported
Pull sound fixes from Takashi Iwai:
"A few small fixes for the last spurt. All changes are small, mostly
consisting of driver-specific fixes, along with two UAF fixes for the
ALSA timer core.
Core:
- Two UAF fixes in ALSA timer core
ASoC:
- SDCA: Fix NULL pointer dereference
- amd / yc: Add DMI quirk for ASUS ExpertBook PM1403CDA
- SOF amd: Fix garbage/spurious warnings
- wm_adsp: Fix potential NULL dereference when removing firmware
controls
- loongson: Fix negative position calculation
- spi-rzv2h-rspi: Fix SPDR read access width on 16-bit RX path"
* tag 'sound-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions
ASoC: loongson: Fix invalid position error in ls_pcm_pointer
spi: rzv2h-rspi: Fix SPDR read access width for 16-bit RX
ASoC: amd: yc: Add DMI quirk for ASUS EXPERTBOOK PM1403CDA
ASoC: SOF: amd: set ipc flags to zero
ASoC: SOF: amd: fix for ipc flags check
ASoC: wm_adsp: Fix NULL dereference when removing firmware controls
ALSA: timer: Fix UAF at snd_timer_user_params()
ALSA: timer: Forcibly close timer instances at closing
Pull SoC fixes from Arnd Bergmann:
"Two more small fixes came in, both addressing corner cases in platform
specific code: the microchip mpfs system controller probe and the CPU
power management on 32-bit rockchips SoCs"
* tag 'soc-fixes-7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: rockchip: keep reset control around
soc: microchip: mpfs-sys-controller: fix resource leak on probe error
i2c-host-fixes for v7.1-rc8
- imx: keep clock and pinctrl states consistent in runtime PM
- imx-lpi2c: fix DMA resource leaks on PIO fallback
- qcom-cci: fix NULL pointer dereference on remove
- riic: fix reset refcount leak on resume_noirq error path
- stm32f7: account for analog filter in timing computation
- tegra: fix suspend/resume handling in NOIRQ phase
- tegra: update Tegra410 I2C timings to match hardware specs
- MAINTAINERS: hand over I2C maintainership to Andi
The YAML conversion added me as maintainer but I can't recall being
asked nor do I want to maintain it. Add Peter as maintainer for the
binding as he is maintainer of the driver.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
After 13.5 years of maintaining I2C, it is finally time for me to move
to other areas. So, I hereby transfer I2C maintainership to Andi Shyti.
He has been taking care of the I2C host drivers for a while now and
kindly agreed to look after the whole subsystem. Thank you, Andi! I also
want to thank all contributors, reviewers, and fellow maintainers making
all these years a mostly smooth ride. Happy hacking, everyone!
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260609091612.8228-4-wsa+renesas@sang-engineering.com
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
Driver Changes:
- fix oops in suspend/shutdown without display (Jani)
- RAS fixes (Raag)
- Use HW_ERR prefix in log (Raag)
- include all registered queues in TLB invalidation (Tangudu)
- Fix refcount leak in xe_range_tree in error paths (Wentao)
- fix job timeout recovery for unstarted jobs and kernel queues (Rodrigo)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/aitt8ZkYmxIT9cdP@gsse-cloud1.jf.intel.com
Pull dma-mapping fix from Marek Szyprowski:
"Three more fixes for the DMA-mapping code, related to PCI P2PDMA, DMA
debug and DMA link ranges API (Li RongQing and Jason Gunthorpe)"
* tag 'dma-mapping-7.1-2026-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
iommu/dma: Do not try to iommu_map a 0 length region in swiotlb
dma-debug: fix physical address retrieval in debug_dma_sync_sg_for_device
dma-mapping: direct: fix missing mapping for THRU_HOST_BRIDGE segments
Pull s390 fix from Alexander Gordeev:
- s390 selects GENERIC_LOCKBREAK when PREEMPT is enabled to tackle an
old compile error that no longer exists. Since recently PREEMPT is
always enabled, this LOCKBREAK config causes massive performance
regressions.
Remove GENERIC_LOCKBREAK from s390 Kconfig to fix the degradation.
* tag 's390-7.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: Remove GENERIC_LOCKBREAK Kconfig option
Pull networking fixes from Paolo Abeni:
"Including fixes from IPsec and netfilter.
This is relatively small, mostly because we are a bit behind our PW
queue. I'm not aware of any pending regression.
Current release - regressions:
- netfilter: nf_tables_offload: drop device refcount on error
Previous releases - regressions:
- core: add pskb_may_pull() to skb_gro_receive_list()
- xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()
- ipv6: fix a potential NPD in cleanup_prefix_route()
- ipv4: fix use-after-free caused by the fqdir_pre_exit() flush
- eth:
- bnxt_en: fix NULL pointer dereference
- emac: fix use-after-free during device removal
- octeontx2-af: fix memory leak in rvu_setup_hw_resources()
- tun: zero the whole vnet header in tun_put_user()
- sit: reload inner IPv6 header after GSO offloads
Previous releases - always broken:
- core: fix double-free in netdev_nl_bind_rx_doit()
- netfilter: nf_log: validate MAC header was set before dumping it
- xfrm: iptfs: fix ABBA deadlock in iptfs_destroy_state()
- tcp: restrict SO_ATTACH_FILTER to priv users
- mctp: usb: fix race between urb completion and rx_retry
cancellation
- eth:
- mlx5: fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list
- mvpp2: sync RX data at the hardware packet offset"
* tag 'net-7.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (64 commits)
octeontx2-af: fix IP fragment flag corruption on custom KPU profile load
ipv6: Fix a potential NPD in cleanup_prefix_route()
net: txgbe: initialize PHY interface to 0
net: txgbe: distinguish module types by checking identifier
net: txgbe: initialize module info buffer
net: mvpp2: build skb from XDP-adjusted data on XDP_PASS
net: mvpp2: refill RX buffers before XDP or skb use
net: mvpp2: limit XDP frame size to the RX buffer
net: mvpp2: sync RX data at the hardware packet offset
netfilter: nft_meta_bridge: fix stale stack leak via IIFHWADDR register
netfilter: nft_fib: fix stale stack leak via the OIFNAME register
netfilter: nft_exthdr: fix register tracking for F_PRESENT flag
netfilter: nf_log: validate MAC header was set before dumping it
netfilter: x_tables: avoid leaking percpu counter pointers
netfilter: nf_conntrack: destroy stale expectfn expectations on unregister
netfilter: nf_tables_offload: drop device refcount on error
netfilter: revalidate bridge ports
rds: mark snapshot pages dirty in rds_info_getsockopt()
ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
ptp: ocp: fix resource freeing order
...
Pull pmdomain fixes from Ulf Hansson:
- imx: Fix OF node refcount
- ti: Fix wakeup configuration for parent devices of wakeup sources
* tag 'pmdomain-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: imx: fix OF node refcount
pmdomain: ti_sci: add wakeup constraint to parent devices of wakeup source
sdca_dev_unregister_functions() iterates over all SDCA function
descriptors and calls sdca_dev_unregister() on each func_dev without
checking for NULL. When a function registration has failed partway
through, or the device cleanup races with probe deferral, func_dev
entries may be NULL, leading to a kernel oops:
BUG: kernel NULL pointer dereference, address: 0000000000000040
RIP: 0010:device_del+0x1e/0x3e0
Call Trace:
sdca_dev_unregister_functions+0x37/0x60 [snd_soc_sdca]
release_nodes+0x35/0xb0
devres_release_all+0x90/0x100
device_unbind_cleanup+0xe/0x80
device_release_driver_internal+0x1c1/0x200
bus_remove_device+0xc6/0x130
device_del+0x161/0x3e0
device_unregister+0x17/0x60
sdw_delete_slave+0xb6/0xd0 [soundwire_bus]
sdw_bus_master_delete+0x1e/0x50 [soundwire_bus]
...
sof_probe_work+0x19/0x30 [snd_sof]
This was observed on a Lenovo ThinkPad X1 Carbon G14 (Panther Lake)
with the SOF audio driver probe failing due to missing Panther Lake
firmware, causing the subsequent cleanup of SoundWire devices to
trigger the crash.
Fix this with three changes:
1) Add a NULL guard in sdca_dev_unregister() so that callers do not
need to pre-validate the pointer (defense in depth).
2) In sdca_dev_unregister_functions(), skip NULL func_dev entries
and clear func_dev to NULL after unregistration, making the
function idempotent and safe against double-invocation.
3) In sdca_dev_register_functions(), roll back all previously
registered functions when a later one fails, so the function
array is never left in a partially-populated state.
Fixes: 4496d1c65b ("ASoC: SDCA: add function devices")
Signed-off-by: Kean Ren <rh_king@163.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260611023757.1553960-1-rh_king@163.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 7af5b901e8 ("ARM: 9358/2: Implement PAN for LPAE by TTBR0
page table walks disablement") implemented PAN for LPAE kernels by
setting TTBCR.EPD0 on every kernel entry, disabling TTBR0 page-table
walks while running in kernel mode. The commit correctly updated
cpu_suspend() in arch/arm/kernel/suspend.c, but missed two other code
paths that switch the CPU to the identity mapping before jumping to
low-PA (TTBR0-range) physical addresses:
1. setup_mm_for_reboot() in arch/arm/mm/idmap.c, used by the kexec
reboot path. With TTBCR.EPD0 still set, the subsequent branch to
the identity-mapped cpu_v7_reset causes a PrefetchAbort because the
TTBR0 page-table walk needed to resolve the identity-mapped address
is disabled. This manifests as a hard hang or "bad PC value" panic
on LPAE kernels booted on CPUs that strictly enforce EPD0 for
instruction fetch (e.g. Cortex-A53 in AArch32 mode) while the same
image may accidentally work on Cortex-A15 due to microarchitectural
differences in EPD0 enforcement.
2. arch_restore_image() in arch/arm/kernel/hibernate.c, which calls
cpu_switch_mm(idmap_pgd, &init_mm) directly without going through
setup_mm_for_reboot(), leaving TTBCR.EPD0 set while the identity
mapping is active.
Fix both sites by calling uaccess_save_and_enable() before switching
to the identity mapping, mirroring what the original commit did for
cpu_suspend().
Assisted-by: Cursor:claude-sonnet-4.6
Fixes: 7af5b901e8 ("ARM: 9358/2: Implement PAN for LPAE by TTBR0 page table walks disablement")
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Commit 44e9a3bb76 ("ARM: 9430/1: entry: Do a dummy read from
VMAP shadow") added a dummy read from the KASAN VMAP stack shadow in
__switch_to(). The read uses ldr, but the KASAN shadow address is
byte-granular and is not guaranteed to be word aligned.
ARMv5 faults unaligned word loads. With CONFIG_KASAN_VMALLOC and
CONFIG_VMAP_STACK enabled, ARM926/VersatilePB crashes in __switch_to()
with an alignment exception before reaching init.
Use ldrb for the dummy shadow access. The code only needs to fault in the
shadow mapping if the stack shadow is missing, so a byte load is sufficient
and matches the granularity of KASAN shadow memory.
Fixes: 44e9a3bb76 ("ARM: 9430/1: entry: Do a dummy read from VMAP shadow")
Cc: stable@vger.kernel.org # v6.13+
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
