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hcahca and others added 30 commits December 8, 2025 15:42
Fallback to generic BUG implementation in case CONFIG_BUG is disabled.
This restores the old behaviour before 'cond_str' support was added.

It probably doesn't matter, since nobody should disable CONFIG_BUG, but at
least this is consistent to before.

Fixes: 6584ff2 ("bugs/s390: Use 'cond_str' in __EMIT_BUG()")
Signed-off-by: Heiko Carstens <[email protected]>
All objects are supposed to have a minimal alignment of two, since a
couple of instructions only work with even addresses. Add the missing
align statement for the file string.

Fixes: 6584ff2 ("bugs/s390: Use 'cond_str' in __EMIT_BUG()")
Signed-off-by: Heiko Carstens <[email protected]>
This commit use kthread_destroy_worker() to release sch->helper
objects to fix the following kmemleak:

unreferenced object 0xffff888121ec7b00 (size 128):
  comm "scx_simple", pid 1197, jiffies 4295884415
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de  .............N..
    ff ff ff ff 00 00 00 00 ff ff ff ff ff ff ff ff  ................
  backtrace (crc 587b3352):
    kmemleak_alloc+0x62/0xa0
    __kmalloc_cache_noprof+0x28d/0x3e0
    kthread_create_worker_on_node+0xd5/0x1f0
    scx_enable.isra.210+0x6c2/0x25b0
    bpf_scx_reg+0x12/0x20
    bpf_struct_ops_link_create+0x2c3/0x3b0
    __sys_bpf+0x3102/0x4b00
    __x64_sys_bpf+0x79/0xc0
    x64_sys_call+0x15d9/0x1dd0
    do_syscall_64+0xf0/0x470
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

Fixes: bff3b5a ("sched_ext: Move disable machinery into scx_sched")
Cc: [email protected] # v6.16+
Signed-off-by: Zqiang <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
…with NULL next

Early when trying to get sched_ext and proxy-exe working together,
I kept tripping over NULL ptr in put_prev_task_scx() on the line:
  if (sched_class_above(&ext_sched_class, next->sched_class)) {

Which was due to put_prev_task() passes a NULL next, calling:
  prev->sched_class->put_prev_task(rq, prev, NULL);

put_prev_task_scx() already guards for a NULL next in the
switch_class case, but doesn't seem to have a guard for
sched_class_above() check.

I can't say I understand why this doesn't trip usually without
proxy-exec. And in newer kernels there are way fewer
put_prev_task(), and I can't easily reproduce the issue now
even with proxy-exec.

But we still have one put_prev_task() call left in core.c that
seems like it could trip this, so I wanted to send this out for
consideration.

tj: put_prev_task() can be called with NULL @next; however, when @p is
queued, that doesn't happen, so this condition shouldn't currently be
triggerable. The connection isn't straightforward or necessarily reliable,
so add the NULL check even if it can't currently be triggered.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: John Stultz <[email protected]>
Reviewed-by: Andrea Righi <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
On x86-64, this_cpu_cmpxchg() uses CMPXCHG without LOCK prefix which
means it is only safe for the local CPU and not for multiple CPUs.
Recently the commit 36df6e3 ("cgroup: make css_rstat_updated nmi
safe") make css_rstat_updated lockless and uses lockless list to allow
reentrancy. Since css_rstat_updated can invoked from process context,
IRQ and NMI, it uses this_cpu_cmpxchg() to select the winner which will
inset the lockless lnode into the global per-cpu lockless list.

However the commit missed one case where lockless node of a cgroup can
be accessed and modified by another CPU doing the flushing. Basically
llist_del_first_init() in css_process_update_tree().

On a cursory look, it can be questioned how css_process_update_tree()
can see a lockless node in global lockless list where the updater is at
this_cpu_cmpxchg() and before llist_add() call in css_rstat_updated().
This can indeed happen in the presence of IRQs/NMI.

Consider this scenario: Updater for cgroup stat C on CPU A in process
context is after llist_on_list() check and before this_cpu_cmpxchg() in
css_rstat_updated() where it get interrupted by IRQ/NMI. In the IRQ/NMI
context, a new updater calls css_rstat_updated() for same cgroup C and
successfully inserts rstatc_pcpu->lnode.

Now concurrently CPU B is running the flusher and it calls
llist_del_first_init() for CPU A and got rstatc_pcpu->lnode of cgroup C
which was added by the IRQ/NMI updater.

Now imagine CPU B calling init_llist_node() on cgroup C's
rstatc_pcpu->lnode of CPU A and on CPU A, the process context updater
calling this_cpu_cmpxchg(rstatc_pcpu->lnode) concurrently.

The CMPXCNG without LOCK on CPU A is not safe and thus we need LOCK
prefix.

In Meta's fleet running the kernel with the commit 36df6e3, we are
observing on some machines the memcg stats are getting skewed by more
than the actual memory on the system. On close inspection, we noticed
that lockless node for a workload for specific CPU was in the bad state
and thus all the updates on that CPU for that cgroup was being lost.

To confirm if this skew was indeed due to this CMPXCHG without LOCK in
css_rstat_updated(), we created a repro (using AI) at [1] which shows
that CMPXCHG without LOCK creates almost the same lnode corruption as
seem in Meta's fleet and with LOCK CMPXCHG the issue does not
reproduces.

Link: http://lore.kernel.org/efiagdwmzfwpdzps74fvcwq3n4cs36q33ij7eebcpssactv3zu@se4hqiwxcfxq [1]
Signed-off-by: Shakeel Butt <[email protected]>
Cc: [email protected] # v6.17+
Fixes: 36df6e3 ("cgroup: make css_rstat_updated nmi safe")
Signed-off-by: Tejun Heo <[email protected]>
It is possible for a BO to exist that is not currently associated with a
resource, e.g. because it has been evicted.

When devcoredump tries to read the contents of all BOs for dumping, we need
to expect this as well -- in this case, ENODATA is recorded instead of the
buffer contents.

Fixes: 7d08df5 ("drm/ttm: Add ttm_bo_access")
Fixes: 09ac4fc ("drm/ttm: Implement vm_operations_struct.access v2")
Cc: stable <[email protected]>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6271
Signed-off-by: Simon Richter <[email protected]>
Reviewed-by: Matthew Brost <[email protected]>
Reviewed-by: Shuicheng Lin <[email protected]>
Reviewed-by: Christian König <[email protected]>
Signed-off-by: Matthew Brost <[email protected]>
Link: https://patch.msgid.link/[email protected]
When split svm ranges that have been mapped using huge page should use huge
page size(2MB) to check split range alignment, not prange->granularity that
means migration granularity.

Fixes: 7ef6b2d ("drm/amdkfd: remap unaligned svm ranges that have split")
Signed-off-by: Xiaogang Chen <[email protected]>
Reviewed-by: Philip Yang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 448ee45)
The trap may be entered with dependency checking disabled.
Wait for dependency counters and save/restore scheduling mode.

v2:

Use ttmp1 instead of ttmp11. ttmp11 is not zero-initialized.
While the trap handler does zero this field before use, a user-mode
second-level trap handler could not rely on this being zero when
using an older kernel mode driver.

v3:

Use ttmp11 primarily but copy to ttmp1 before jumping to the
second level trap handler. ttmp1 is inspectable by a debugger.
Unexpected bits in the unused space may regress existing software.

Signed-off-by: Jay Cornwall <[email protected]>
Reviewed-by: Lancelot Six <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 4238888)
Cc: [email protected]
This can get called from an atomic context.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4470
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 8acdad9)
Cc: [email protected]
SI hardware doesn't support pasids, user mode queues, or
KIQ/MES so there is no need for this.  Doing so results in
a segfault as these callbacks are non-existent for SI.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4744
Fixes: f3854e0 ("drm/amdgpu: attach tlb fence to the PTs update")
Reviewed-by: Timur Kristóf <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 820b3d3)
[WHAT]
When compiling Linux kernel with clang, the following warning / error
messages pops up:

drivers/gpu/drm/amd/amdgpu/../dal-dev/dc/dml2_0/display_mode_core.c:6853:12:
error: stack frame size (2120) exceeds limit (2056) in
'dml_core_mode_support' [-Werror,-Wframe-larger-than]
 6853 | dml_bool_t dml_core_mode_support(struct display_mode_lib_st
*mode_lib)

[HOW]
Refactoring CalculateVMRowAndSwath_params assignments to a new function
helps reduce the stack frame size in dml_core_mode_support.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4733
Reviewed-by: Austin Zheng <[email protected]>
Reviewed-by: Aurabindo Pillai <[email protected]>
Signed-off-by: Alex Hung <[email protected]>
Signed-off-by: Chenyu Chen <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 29a4dc4)
This is important for userspace to avoid hardcoding VGPR size.

Reviewed-by: Kent Russell <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 71776e0)
Cc: [email protected]
On a 32-bit ARM system, the audio_decoder struct ends up being too large
for dp_retrain_link_dp_test.

link_dp_cts.c:157:1: error: the frame size of 1328 bytes is larger than
1280 bytes [-Werror=frame-larger-than=]

This is mitigated by shrinking the members of the struct and avoids
having to deal with dynamic allocation.

feed_back_divider is assigned but otherwise unused. Remove both.

pixel_repetition looks like it should be a bool since it's only ever
assigned to 1. But there are checks for 2 and 4. Reduce to uint8_t.

Remove ss_percentage_divider. Unused.

Shrink refresh_rate as it gets assigned to at most a 3 digit integer
value.

Signed-off-by: Rosen Penev <[email protected]>
Reviewed-by: Alex Hung <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 3849efd)
GFX1151 has 1.5x the number of available physical VGPRs per SIMD.
Bump total memory availability for acquire checks on queue creation.

Signed-off-by: Jonathan Kim <[email protected]>
Reviewed-by: Mario Limonciello <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit b42f3bf)
Cc: [email protected]
Handling most of the ublksrv_ctrl_cmd opcodes require locking a mutex,
so ublk_ctrl_uring_cmd() bails out with EAGAIN when called with the
IO_URING_F_NONBLOCK issue flag. However, several opcodes can be handled
without blocking:
- UBLK_CMD_GET_QUEUE_AFFINITY
- UBLK_CMD_GET_DEV_INFO
- UBLK_CMD_GET_DEV_INFO2
- UBLK_U_CMD_GET_FEATURES

Handle these opcodes synchronously instead of returning EAGAIN so
io_uring doesn't need to issue the command via the worker thread pool.

Signed-off-by: Caleb Sander Mateos <[email protected]>
Reviewed-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
We converted this code to use auto free cleanup.h magic but one
remaining free was accidentally left behind which leads to a double free
bug.

Fixes: a320476 ("btrfs: tests: do trivial BTRFS_PATH_AUTO_FREE conversions")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
… transaction

We can't log a conflicting inode if it's a directory and it was moved
from one parent directory to another parent directory in the current
transaction, as this can result an attempt to have a directory with
two hard links during log replay, one for the old parent directory and
another for the new parent directory.

The following scenario triggers that issue:

1) We have directories "dir1" and "dir2" created in a past transaction.
   Directory "dir1" has inode A as its parent directory;

2) We move "dir1" to some other directory;

3) We create a file with the name "dir1" in directory inode A;

4) We fsync the new file. This results in logging the inode of the new file
   and the inode for the directory "dir1" that was previously moved in the
   current transaction. So the log tree has the INODE_REF item for the
   new location of "dir1";

5) We move the new file to some other directory. This results in updating
   the log tree to included the new INODE_REF for the new location of the
   file and removes the INODE_REF for the old location. This happens
   during the rename when we call btrfs_log_new_name();

6) We fsync the file, and that persists the log tree changes done in the
   previous step (btrfs_log_new_name() only updates the log tree in
   memory);

7) We have a power failure;

8) Next time the fs is mounted, log replay happens and when processing
   the inode for directory "dir1" we find a new INODE_REF and add that
   link, but we don't remove the old link of the inode since we have
   not logged the old parent directory of the directory inode "dir1".

As a result after log replay finishes when we trigger writeback of the
subvolume tree's extent buffers, the tree check will detect that we have
a directory a hard link count of 2 and we get a mount failure.
The errors and stack traces reported in dmesg/syslog are like this:

   [ 3845.729764] BTRFS info (device dm-0): start tree-log replay
   [ 3845.730304] page: refcount:3 mapcount:0 mapping:000000005c8a3027 index:0x1d00 pfn:0x11510c
   [ 3845.731236] memcg:ffff9264c02f4e00
   [ 3845.731751] aops:btree_aops [btrfs] ino:1
   [ 3845.732300] flags: 0x17fffc00000400a(uptodate|private|writeback|node=0|zone=2|lastcpupid=0x1ffff)
   [ 3845.733346] raw: 017fffc00000400a 0000000000000000 dead000000000122 ffff9264d978aea8
   [ 3845.734265] raw: 0000000000001d00 ffff92650e6d4738 00000003ffffffff ffff9264c02f4e00
   [ 3845.735305] page dumped because: eb page dump
   [ 3845.735981] BTRFS critical (device dm-0): corrupt leaf: root=5 block=30408704 slot=6 ino=257, invalid nlink: has 2 expect no more than 1 for dir
   [ 3845.737786] BTRFS info (device dm-0): leaf 30408704 gen 10 total ptrs 17 free space 14881 owner 5
   [ 3845.737789] BTRFS info (device dm-0): refs 4 lock_owner 0 current 30701
   [ 3845.737792] 	item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
   [ 3845.737794] 		inode generation 3 transid 9 size 16 nbytes 16384
   [ 3845.737795] 		block group 0 mode 40755 links 1 uid 0 gid 0
   [ 3845.737797] 		rdev 0 sequence 2 flags 0x0
   [ 3845.737798] 		atime 1764259517.0
   [ 3845.737800] 		ctime 1764259517.572889464
   [ 3845.737801] 		mtime 1764259517.572889464
   [ 3845.737802] 		otime 1764259517.0
   [ 3845.737803] 	item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
   [ 3845.737805] 		index 0 name_len 2
   [ 3845.737807] 	item 2 key (256 DIR_ITEM 2363071922) itemoff 16077 itemsize 34
   [ 3845.737808] 		location key (257 1 0) type 2
   [ 3845.737810] 		transid 9 data_len 0 name_len 4
   [ 3845.737811] 	item 3 key (256 DIR_ITEM 2676584006) itemoff 16043 itemsize 34
   [ 3845.737813] 		location key (258 1 0) type 2
   [ 3845.737814] 		transid 9 data_len 0 name_len 4
   [ 3845.737815] 	item 4 key (256 DIR_INDEX 2) itemoff 16009 itemsize 34
   [ 3845.737816] 		location key (257 1 0) type 2
   [ 3845.737818] 		transid 9 data_len 0 name_len 4
   [ 3845.737819] 	item 5 key (256 DIR_INDEX 3) itemoff 15975 itemsize 34
   [ 3845.737820] 		location key (258 1 0) type 2
   [ 3845.737821] 		transid 9 data_len 0 name_len 4
   [ 3845.737822] 	item 6 key (257 INODE_ITEM 0) itemoff 15815 itemsize 160
   [ 3845.737824] 		inode generation 9 transid 10 size 6 nbytes 0
   [ 3845.737825] 		block group 0 mode 40755 links 2 uid 0 gid 0
   [ 3845.737826] 		rdev 0 sequence 1 flags 0x0
   [ 3845.737827] 		atime 1764259517.572889464
   [ 3845.737828] 		ctime 1764259517.572889464
   [ 3845.737830] 		mtime 1764259517.572889464
   [ 3845.737831] 		otime 1764259517.572889464
   [ 3845.737832] 	item 7 key (257 INODE_REF 256) itemoff 15801 itemsize 14
   [ 3845.737833] 		index 2 name_len 4
   [ 3845.737834] 	item 8 key (257 INODE_REF 258) itemoff 15787 itemsize 14
   [ 3845.737836] 		index 2 name_len 4
   [ 3845.737837] 	item 9 key (257 DIR_ITEM 2507850652) itemoff 15754 itemsize 33
   [ 3845.737838] 		location key (259 1 0) type 1
   [ 3845.737839] 		transid 10 data_len 0 name_len 3
   [ 3845.737840] 	item 10 key (257 DIR_INDEX 2) itemoff 15721 itemsize 33
   [ 3845.737842] 		location key (259 1 0) type 1
   [ 3845.737843] 		transid 10 data_len 0 name_len 3
   [ 3845.737844] 	item 11 key (258 INODE_ITEM 0) itemoff 15561 itemsize 160
   [ 3845.737846] 		inode generation 9 transid 10 size 8 nbytes 0
   [ 3845.737847] 		block group 0 mode 40755 links 1 uid 0 gid 0
   [ 3845.737848] 		rdev 0 sequence 1 flags 0x0
   [ 3845.737849] 		atime 1764259517.572889464
   [ 3845.737850] 		ctime 1764259517.572889464
   [ 3845.737851] 		mtime 1764259517.572889464
   [ 3845.737852] 		otime 1764259517.572889464
   [ 3845.737853] 	item 12 key (258 INODE_REF 256) itemoff 15547 itemsize 14
   [ 3845.737855] 		index 3 name_len 4
   [ 3845.737856] 	item 13 key (258 DIR_ITEM 1843588421) itemoff 15513 itemsize 34
   [ 3845.737857] 		location key (257 1 0) type 2
   [ 3845.737858] 		transid 10 data_len 0 name_len 4
   [ 3845.737860] 	item 14 key (258 DIR_INDEX 2) itemoff 15479 itemsize 34
   [ 3845.737861] 		location key (257 1 0) type 2
   [ 3845.737862] 		transid 10 data_len 0 name_len 4
   [ 3845.737863] 	item 15 key (259 INODE_ITEM 0) itemoff 15319 itemsize 160
   [ 3845.737865] 		inode generation 10 transid 10 size 0 nbytes 0
   [ 3845.737866] 		block group 0 mode 100600 links 1 uid 0 gid 0
   [ 3845.737867] 		rdev 0 sequence 2 flags 0x0
   [ 3845.737868] 		atime 1764259517.580874966
   [ 3845.737869] 		ctime 1764259517.586121869
   [ 3845.737870] 		mtime 1764259517.580874966
   [ 3845.737872] 		otime 1764259517.580874966
   [ 3845.737873] 	item 16 key (259 INODE_REF 257) itemoff 15306 itemsize 13
   [ 3845.737874] 		index 2 name_len 3
   [ 3845.737875] BTRFS error (device dm-0): block=30408704 write time tree block corruption detected
   [ 3845.739448] ------------[ cut here ]------------
   [ 3845.740092] WARNING: CPU: 5 PID: 30701 at fs/btrfs/disk-io.c:335 btree_csum_one_bio+0x25a/0x270 [btrfs]
   [ 3845.741439] Modules linked in: btrfs dm_flakey crc32c_cryptoapi (...)
   [ 3845.750626] CPU: 5 UID: 0 PID: 30701 Comm: mount Tainted: G        W           6.18.0-rc6-btrfs-next-218+ #1 PREEMPT(full)
   [ 3845.752414] Tainted: [W]=WARN
   [ 3845.752828] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
   [ 3845.754499] RIP: 0010:btree_csum_one_bio+0x25a/0x270 [btrfs]
   [ 3845.755460] Code: 31 f6 48 89 (...)
   [ 3845.758685] RSP: 0018:ffffa8d9c5677678 EFLAGS: 00010246
   [ 3845.759450] RAX: 0000000000000000 RBX: ffff92650e6d4738 RCX: 0000000000000000
   [ 3845.760309] RDX: 0000000000000000 RSI: ffffffff9aab45b9 RDI: ffff9264c4748000
   [ 3845.761239] RBP: ffff9264d4324000 R08: 0000000000000000 R09: ffffa8d9c5677468
   [ 3845.762607] R10: ffff926bdc1fffa8 R11: 0000000000000003 R12: ffffa8d9c5677680
   [ 3845.764099] R13: 0000000000004000 R14: ffff9264dd624000 R15: ffff9264d978aba8
   [ 3845.765094] FS:  00007f751fa5a840(0000) GS:ffff926c42a82000(0000) knlGS:0000000000000000
   [ 3845.766226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
   [ 3845.766970] CR2: 0000558df1815380 CR3: 000000010ed88003 CR4: 0000000000370ef0
   [ 3845.768009] Call Trace:
   [ 3845.768392]  <TASK>
   [ 3845.768714]  btrfs_submit_bbio+0x6ee/0x7f0 [btrfs]
   [ 3845.769640]  ? write_one_eb+0x28e/0x340 [btrfs]
   [ 3845.770588]  btree_write_cache_pages+0x2f0/0x550 [btrfs]
   [ 3845.771286]  ? alloc_extent_state+0x19/0x100 [btrfs]
   [ 3845.771967]  ? merge_next_state+0x1a/0x90 [btrfs]
   [ 3845.772586]  ? set_extent_bit+0x233/0x8b0 [btrfs]
   [ 3845.773198]  ? xas_load+0x9/0xc0
   [ 3845.773589]  ? xas_find+0x14d/0x1a0
   [ 3845.773969]  do_writepages+0xc6/0x160
   [ 3845.774367]  filemap_fdatawrite_wbc+0x48/0x60
   [ 3845.775003]  __filemap_fdatawrite_range+0x5b/0x80
   [ 3845.775902]  btrfs_write_marked_extents+0x61/0x170 [btrfs]
   [ 3845.776707]  btrfs_write_and_wait_transaction+0x4e/0xc0 [btrfs]
   [ 3845.777379]  ? _raw_spin_unlock_irqrestore+0x23/0x40
   [ 3845.777923]  btrfs_commit_transaction+0x5ea/0xd20 [btrfs]
   [ 3845.778551]  ? _raw_spin_unlock+0x15/0x30
   [ 3845.778986]  ? release_extent_buffer+0x34/0x160 [btrfs]
   [ 3845.779659]  btrfs_recover_log_trees+0x7a3/0x7c0 [btrfs]
   [ 3845.780416]  ? __pfx_replay_one_buffer+0x10/0x10 [btrfs]
   [ 3845.781499]  open_ctree+0x10bb/0x15f0 [btrfs]
   [ 3845.782194]  btrfs_get_tree.cold+0xb/0x16c [btrfs]
   [ 3845.782764]  ? fscontext_read+0x15c/0x180
   [ 3845.783202]  ? rw_verify_area+0x50/0x180
   [ 3845.783667]  vfs_get_tree+0x25/0xd0
   [ 3845.784047]  vfs_cmd_create+0x59/0xe0
   [ 3845.784458]  __do_sys_fsconfig+0x4f6/0x6b0
   [ 3845.784914]  do_syscall_64+0x50/0x1220
   [ 3845.785340]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
   [ 3845.785980] RIP: 0033:0x7f751fc7f4aa
   [ 3845.786759] Code: 73 01 c3 48 (...)
   [ 3845.789951] RSP: 002b:00007ffcdba45dc8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
   [ 3845.791402] RAX: ffffffffffffffda RBX: 000055ccc8291c20 RCX: 00007f751fc7f4aa
   [ 3845.792688] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
   [ 3845.794308] RBP: 000055ccc8292120 R08: 0000000000000000 R09: 0000000000000000
   [ 3845.795829] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
   [ 3845.797183] R13: 00007f751fe11580 R14: 00007f751fe1326c R15: 00007f751fdf8a23
   [ 3845.798633]  </TASK>
   [ 3845.799067] ---[ end trace 0000000000000000 ]---
   [ 3845.800215] BTRFS: error (device dm-0) in btrfs_commit_transaction:2553: errno=-5 IO failure (Error while writing out transaction)
   [ 3845.801860] BTRFS warning (device dm-0 state E): Skipping commit of aborted transaction.
   [ 3845.802815] BTRFS error (device dm-0 state EA): Transaction aborted (error -5)
   [ 3845.803728] BTRFS: error (device dm-0 state EA) in cleanup_transaction:2036: errno=-5 IO failure
   [ 3845.805374] BTRFS: error (device dm-0 state EA) in btrfs_replay_log:2083: errno=-5 IO failure (Failed to recover log tree)
   [ 3845.807919] BTRFS error (device dm-0 state EA): open_ctree failed: -5

Fix this by never logging a conflicting inode that is a directory and was
moved in the current transaction (its last_unlink_trans equals the current
transaction) and instead fallback to a transaction commit.

A test case for fstests will follow soon.

Reported-by: Vyacheslav Kovalevsky <[email protected]>
Link: https://lore.kernel.org/linux-btrfs/[email protected]/
CC: [email protected] # 6.1+
Signed-off-by: Filipe Manana <[email protected]>
Signed-off-by: David Sterba <[email protected]>
When we are logging a directory and the log context indicates that we
are logging a new name for some other file (that is or was inside that
directory), we skip logging the inodes for new dentries in the directory.

This is ok most of the time, but if after the rename or link operation
that triggered the logging of that directory, we have an explicit fsync
of that directory without the directory inode being evicted and reloaded,
we end up never logging the inodes for the new dentries that we found
during the new name logging, as the next directory fsync will only process
dentries that were added after the last time we logged the directory (we
are doing an incremental directory logging).

So make sure we always log new dentries for a directory even if we are
in a context of logging a new name.

We started skipping logging inodes for new dentries as of commit
c48792c ("btrfs: do not log new dentries when logging that a new name
exists") and it was fine back then, because when logging a directory we
always iterated over all the directory entries (for leaves changed in the
current transaction) so a subsequent fsync would always log anything that
was previously skipped while logging a directory when logging a new name
(with btrfs_log_new_name()). But later support for incrementally logging
a directory was added in commit dc28722 ("btrfs: keep track of the
last logged keys when logging a directory"), to avoid checking all dir
items every time we log a directory, so the check to skip dentry logging
added in the first commit should have been removed when the incremental
support for logging a directory was added.

A test case for fstests will follow soon.

Reported-by: Vyacheslav Kovalevsky <[email protected]>
Link: https://lore.kernel.org/linux-btrfs/[email protected]/
Fixes: dc28722 ("btrfs: keep track of the last logged keys when logging a directory")
Reviewed-by: Boris Burkov <[email protected]>
Signed-off-by: Filipe Manana <[email protected]>
Signed-off-by: David Sterba <[email protected]>
The register buffer in s35390a_get_reg() was previously defined as
`char *buf`. This is not ideal since register data represents raw
binary values rather than textual data.

Switch the type to `u8 *buf` to better reflect its intended usage and
to avoid potential issues with sign extension when handling register
values on platforms where `char` is signed by default.

This change improves type safety and makes the code consistent with
other RTC drivers that operate on raw register data.

Signed-off-by: Nick Huang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
MC34708 is one of the three mfd devices supported by DRV_MC13XXX.
Update Kconfig accordingly.

Signed-off-by: Alexander Kurz <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Simplify clock management by replacing devm_clk_get() and manual clock
enable/disable with devm_clk_get_enabled(). This also simplifies the
error handling logic. Also remove tegra_rtc_remove() as the clock will
automatically be disabled when the device is unbound from the bus.

Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Kartik Rajput <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Jon Hunter <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Add ACPI support for Tegra RTC, which is available on Tegra241 and
Tegra410. Both Tegra241 and Tegra410 use the same ACPI ID 'NVDA0280'.
When ACPI boot is used, the RTC clock is configured by UEFI before
the kernel boots. On device-tree boot, the probe must fail if clocks are
not provided in the device-tree.

Signed-off-by: Kartik Rajput <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Jon Hunter <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Replace deprecated SIMPLE_DEV_PM_OPS with DEFINE_SIMPLE_DEV_PM_OPS macro
and use pm_sleep_ptr() to initialize pm_ops. This also allows us to drop
the checks for CONFIG_PM_SLEEP.

Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Kartik Rajput <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Jon Hunter <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
The Renesas RZ/V2H RTC IP is based on the same RTCA3 IP as RZ/G3S
(r9a08g045), with the following differences:
- It lacks the time capture functionality
- The maximum supported periodic interrupt frequency is 128Hz instead
  of 256Hz
- It requires two reset lines instead of one

Add new compatible string "renesas,r9a09g057-rtca3" for RZ/V2H and update
the binding accordingly:
- Allow "resets" to contain one or two entries depending on the SoC.
- Add "reset-names" property, but make it required only for RZ/V2H.

Signed-off-by: Ovidiu Panait <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Switch from devm_reset_control_get_shared() to
devm_reset_control_array_get_shared() when retrieving resets.

The RZ/V2H SoC requires two resets for the RTC block instead of one,
so this will allow to handle multiple resets without additional changes.

Signed-off-by: Ovidiu Panait <[email protected]>
Reviewed-by: Claudiu Beznea <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Add i2c id_table for isl12026 rtc.

Signed-off-by: Akhilesh Patil <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Commit 9d6d6b0 ("rtc: nvvrs: add NVIDIA VRS RTC device driver") adds
the section NVIDIA VRS RTC DRIVER in MAINTAINERS, which refers to the
non-existing file include/linux/rtc/rtc-nvidia-vrs10.h

Note, with the changes of v6 to v7 of the patch series adding the driver,
the content of this include file was moved into the driver file, and the
include file was dropped from that patch. It was simply missed to adjust
the section in MAINTAINERS that was newly added with that patch.

Drop the file entry to this non-existing file accordingly now.

Signed-off-by: Lukas Bulwahn <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Reviewed-by: Jon Hunter <[email protected]>
Reviewed-by: Shubhi Garg <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Apple Silicon Macs (M1, etc.) have an RTC that is part of the PMU IC,
but most of the PMU functionality is abstracted out by the SMC.
An additional RTC offset stored inside NVMEM is required to compute
the current date/time.

Reviewed-by: Mark Kettenis <[email protected]>
Reviewed-by: Neal Gompa <[email protected]>
Reviewed-by: Rob Herring (Arm) <[email protected]>
Signed-off-by: Sven Peter <[email protected]>
Signed-off-by: James Calligeros <[email protected]>
Reviewd-by: Mark Kettenis <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Apple Silicon Macs (M1, etc.) have an RTC that is part of the PMU IC,
but most of the PMU functionality is abstracted out by the SMC.
On T600x machines, the RTC counter must be accessed via the SMC to
get full functionality, and it seems likely that future machines
will move towards making SMC handle all RTC functionality.

The SMC RTC counter access is implemented on all current machines
as of the time of this writing, on firmware 12.x. However, the RTC
offset (needed to set the time) is still only accessible via direct
PMU access. To handle this, we expose the RTC offset as an NVMEM
cell from the SPMI PMU device node, and this driver consumes that
cell and uses it to compute/set the current time.

Reviewed-by: Neal Gompa <[email protected]>
Signed-off-by: Hector Martin <[email protected]>
Signed-off-by: Sven Peter <[email protected]>
Signed-off-by: James Calligeros <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
The word "upto" is a common typo for "up to". Correct this.

Signed-off-by: Akiyoshi Kurita <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
torvalds and others added 29 commits December 13, 2025 17:25
…/kernel

Pull drm fixes from Dave Airlie:
 "This is the weekly fixes for what is in next tree, mostly amdgpu and
  some i915, panthor and a core revert.

  core:
   - revert dumb bo 8 byte alignment

  amdgpu:
   - SI fix
   - DC reduce stack usage
   - HDMI fixes
   - VCN 4.0.5 fix
   - DP MST fix
   - DC memory allocation fix

  amdkfd:
   - SVM fix
   - Trap handler fix
   - VGPR fixes for GC 11.5

  i915:
   - Fix format string truncation warning
   - FIx runtime PM reference during fbdev BO creation

  panthor:
   - fix UAF

  renesas:
   - fix sync flag handling"

* tag 'drm-next-2025-12-13' of https://gitlab.freedesktop.org/drm/kernel:
  Revert "drm/amd/display: Fix pbn to kbps Conversion"
  drm/amd: Fix unbind/rebind for VCN 4.0.5
  drm/i915: Fix format string truncation warning
  drm/i915/fbdev: Hold runtime PM ref during fbdev BO creation
  drm/amd/display: Improve HDMI info retrieval
  drm/amdkfd: bump minimum vgpr size for gfx1151
  drm/amd/display: shrink struct members
  drm/amdkfd: Export the cwsr_size and ctl_stack_size to userspace
  drm/amd/display: Refactor dml_core_mode_support to reduce stack frame
  drm/amdgpu: don't attach the tlb fence for SI
  drm/amd/display: Use GFP_ATOMIC in dc_create_plane_state()
  drm/amdkfd: Trap handler support for expert scheduling mode
  drm/amdkfd: Use huge page size to check split svm range alignment
  drm/rcar-du: dsi: Handle both DRM_MODE_FLAG_N.SYNC and !DRM_MODE_FLAG_P.SYNC
  drm/gem-shmem: revert the 8-byte alignment constraint
  drm/gem-dma: revert the 8-byte alignment constraint
  drm/panthor: Prevent potential UAF in group creation
…m/kernel

Pull more drm fixes from Dave Airlie:
 "These are the enqueued fixes that ended up in our fixes branch,
  nouveau mostly, along with some small fixes in other places.

  plane:
   - Handle IS_ERR vs NULL in drm_plane_create_hotspot_properties()

  ttm:
   - fix devcoredump for evicted bos

  panel:
   - Fix stack usage warning in novatek-nt35560

  nouveau:
   - alloc fwsec sb at boot to avoid s/r problems
   - fix strcpy usage
   - fix i2c encoder crash

  bridge:
   - Ignore spurious PLL_UNLOCK bit in ti-sn65dsi83

  mgag200:
   - Fix bigendian handling in mgag200

  tilcdc:
   - Fix probe failure in tilcdc"

* tag 'drm-fixes-2025-12-13' of https://gitlab.freedesktop.org/drm/kernel:
  drm/mgag200: Fix big-endian support
  drm/tilcdc: Fix removal actions in case of failed probe
  drm/ttm: Avoid NULL pointer deref for evicted BOs
  drm: nouveau: Replace sprintf() with sysfs_emit()
  drm/nouveau: fix circular dep oops from vendored i2c encoder
  drm/nouveau: refactor deprecated strcpy
  drm/plane: Fix IS_ERR() vs NULL check in drm_plane_create_hotspot_properties()
  drm/bridge: ti-sn65dsi83: ignore PLL_UNLOCK errors
  drm/nouveau/gsp: Allocate fwsec-sb at boot
  drm/panel: novatek-nt35560: avoid on-stack device structure
Commit 7bfe3b8 ("Drivers: hv: Introduce mshv_vtl driver") added a
new generated header file for the offsets into the mshv_vtl_cpu_context
structure to be used by the low-level assembly code.  But it didn't add
the .gitignore file to go with it, so 'git status' and friends will
mention it.

Let's add the gitignore file before somebody thinks that generated
header should be committed.

Fixes: 7bfe3b8 ("Drivers: hv: Introduce mshv_vtl driver")
Signed-off-by: Linus Torvalds <[email protected]>
Brown paper bag time. This is a silly oversight where I missed to drop
the error condition checking to ensure we clean up on early error
returns. I have an internal unit testset coming up for this which will
catch all such issues going forward.

Reported-by: Chris Mason <[email protected]>
Reported-by: Jeff Layton <[email protected]>
Fixes: 011703a ("file: add FD_{ADD,PREPARE}()")
Signed-off-by: Christian Brauner <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
…m/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

 - "powerpc/pseries/cmm: two smaller fixes" (David Hildenbrand)
   fixes a couple of minor things in ppc land

 - "Improve folio split related functions" (Zi Yan)
   some cleanups and minorish fixes in the folio splitting code

* tag 'mm-stable-2025-12-11-11-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/damon/tests/core-kunit: avoid damos_test_commit stack warning
  mm: vmscan: correct nr_requested tracing in scan_folios
  MAINTAINERS: add idr core-api doc file to XARRAY
  mm/hugetlb: fix incorrect error return from hugetlb_reserve_pages()
  mm: fix CONFIG_STACK_GROWSUP typo in mm.h
  mm/huge_memory: fix folio split stats counting
  mm/huge_memory: make min_order_for_split() always return an order
  mm/huge_memory: replace can_split_folio() with direct refcount calculation
  mm/huge_memory: change folio_split_supported() to folio_check_splittable()
  mm/sparse: fix sparse_vmemmap_init_nid_early definition without CONFIG_SPARSEMEM
  powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages
  powerpc/pseries/cmm: call balloon_devinfo_init() also without CONFIG_BALLOON_COMPACTION
…pub/scm/linux/kernel/git/akpm/mm

Pull misc updates from Andrew Morton:
 "There are no significant series in this small merge. Please see the
  individual changelogs for details"

[ Editor's note: it's mainly ocfs2 and a couple of random fixes ]

* tag 'mm-nonmm-stable-2025-12-11-11-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: memfd_luo: add CONFIG_SHMEM dependency
  mm: shmem: avoid build warning for CONFIG_SHMEM=n
  ocfs2: fix memory leak in ocfs2_merge_rec_left()
  ocfs2: invalidate inode if i_mode is zero after block read
  ocfs2: avoid -Wflex-array-member-not-at-end warning
  ocfs2: convert remaining read-only checks to ocfs2_emergency_state
  ocfs2: add ocfs2_emergency_state helper and apply to setattr
  checkpatch: add uninitialized pointer with __free attribute check
  args: fix documentation to reflect the correct numbers
  ocfs2: fix kernel BUG in ocfs2_find_victim_chain
  liveupdate: luo_core: fix redundant bound check in luo_ioctl()
  ocfs2: validate inline xattr size and entry count in ocfs2_xattr_ibody_list
  fs/fat: remove unnecessary wrapper fat_max_cache()
  ocfs2: replace deprecated strcpy with strscpy
  ocfs2: check tl_used after reading it from trancate log inode
  liveupdate: luo_file: don't use invalid list iterator
…nux/kernel/git/tip/tip

Pull misc core fixes from Ingo Molnar:

 - Improve bug reporting

 - Suppress W=1 format warning

 - Improve rseq scalability on Clang builds

* tag 'core-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rseq: Always inline rseq_debug_syscall_return()
  bug: Hush suggest-attribute=format for __warn_printf()
  bug: Let report_bug_entry() provide the correct bugaddr
…ux/kernel/git/tip/tip

Pull irq fixes from Ingo Molnar:

 - Fix error code in the irqchip/mchp-eic driver

 - Fix setup_percpu_irq() affinity assumptions

 - Remove the unused irq_domain_add_tree() function

* tag 'irq-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/mchp-eic: Fix error code in mchp_eic_domain_alloc()
  irqdomain: Delete irq_domain_add_tree()
  genirq: Allow NULL affinity for setup_percpu_irq()
…nux/kernel/git/tip/tip

Pull perf event fixes from Ingo Molnar:

 - Fix NULL pointer dereference crash in the Intel PMU driver

 - Fix missing read event generation on task exit

 - Fix AMD uncore driver init error handling

 - Fix whitespace noise

* tag 'perf-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Fix NULL event dereference crash in handle_pmi_common()
  perf/core: Fix missing read event generation on task exit
  perf/x86/amd/uncore: Fix the return value of amd_uncore_df_event_init() on error
  perf/uprobes: Remove <space><Tab> whitespace noise
…ux/kernel/git/tip/tip

Pull CPU hotplug fix from Ingo Molnar:

 - Fix CPU hotplug callbacks to disable interrupts on UP kernels

* tag 'smp-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu: Make atomic hotplug callbacks run with interrupts disabled on UP
Pull tomoyo update from Tetsuo Handa:
 "Trivial optimization"

* tag 'tomoyo-pr-20251212' of git://git.code.sf.net/p/tomoyo/tomoyo:
  tomoyo: Use local kmap in tomoyo_dump_page()
Pull ceph updates from Ilya Dryomov:
 "We have a patch that adds an initial set of tracepoints to the MDS
  client from Max, a fix that hardens osdmap parsing code from myself
  (marked for stable) and a few assorted fixups"

* tag 'ceph-for-6.19-rc1' of https://github.com/ceph/ceph-client:
  rbd: stop selecting CRC32, CRYPTO, and CRYPTO_AES
  ceph: stop selecting CRC32, CRYPTO, and CRYPTO_AES
  libceph: make decode_pool() more resilient against corrupted osdmaps
  libceph: Amend checking to fix `make W=1` build breakage
  ceph: Amend checking to fix `make W=1` build breakage
  ceph: add trace points to the MDS client
  libceph: fix log output race condition in OSD client
Now that shmem_mknod() hashes the new dentry, d_rehash() in
shmem_whiteout() should be removed.

X-paperbag: brown
Reported-by: Hugh Dickins <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Tested-by: Hugh Dickins <[email protected]>
Fixes: 2313598 ("convert ramfs and tmpfs")
Signed-off-by: Al Viro <[email protected]>
…t/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "The only core fix is in doc; all the others are in drivers, with the
  biggest impacts in libsas being the rollback on error handling and in
  ufs coming from a couple of error handling fixes, one causing a crash
  if it's activated before scanning and the other fixing W-LUN
  resumption"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ufs: qcom: Fix confusing cleanup.h syntax
  scsi: libsas: Add rollback handling when an error occurs
  scsi: device_handler: Return error pointer in scsi_dh_attached_handler_name()
  scsi: ufs: core: Fix a deadlock in the frequency scaling code
  scsi: ufs: core: Fix an error handler crash
  scsi: Revert "scsi: libsas: Fix exp-attached device scan after probe failure scanned in again after probe failed"
  scsi: ufs: core: Fix RPMB link error by reversing Kconfig dependencies
  scsi: qla4xxx: Use time conversion macros
  scsi: qla2xxx: Enable/disable IRQD_NO_BALANCING during reset
  scsi: ipr: Enable/disable IRQD_NO_BALANCING during reset
  scsi: imm: Fix use-after-free bug caused by unfinished delayed work
  scsi: target: sbp: Remove KMSG_COMPONENT macro
  scsi: core: Correct documentation for scsi_device_quiesce()
  scsi: mpi3mr: Prevent duplicate SAS/SATA device entries in channel 1
  scsi: target: Reset t_task_cdb pointer in error case
  scsi: ufs: core: Fix EH failure after W-LUN resume error
This will first be used by the server in order to defer
the processing of the initial recv of the negotiation
request.

But in future it will also be used by the client in order
to implement an async connect.

Cc: Tom Talpey <[email protected]>
Cc: Long Li <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Stefan Metzmacher <[email protected]>
Acked-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
smbdirect_recv_io structures are pre-allocated so we can set the
callback function just once.

This will make it easy to move smb_direct_post_recv to common code
soon.

Cc: Tom Talpey <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Stefan Metzmacher <[email protected]>
Acked-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
…gotiate_recv_work()

The previous change to relax WARN_ON_ONCE(SMBDIRECT_SOCKET_*) checks in
recv_done() and smb_direct_cm_handler() seems to work around the
problem that the order of initial recv completion and
RDMA_CM_EVENT_ESTABLISHED is random, but it's still
a bit ugly.

This implements a better solution deferring the recv completion
processing to smb_direct_negotiate_recv_work(), which is queued
only if both events arrived.

In order to avoid more basic changes to the main recv_done
callback, I introduced a smb_direct_negotiate_recv_done,
which is only used for the first pdu, this will allow
further cleanup and simplifications in recv_done
as a future patch.

smb_direct_negotiate_recv_work() is also very basic
with only basic error checking and the transition
from SMBDIRECT_SOCKET_NEGOTIATE_NEEDED to
SMBDIRECT_SOCKET_NEGOTIATE_RUNNING, which allows
smb_direct_prepare() to continue as before.

Cc: Tom Talpey <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Stefan Metzmacher <[email protected]>
Acked-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
Replace comma between expressions with semicolons.

Using a ',' in place of a ';' can have unintended side effects.
Although that is not the case here, it is seems best to use ';'
unless ',' is intended.

Found by inspection.
No functional change intended.
Compile tested only.

Signed-off-by: Chen Ni <[email protected]>
Acked-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
A zero value of pdacl->num_aces is already handled at the start of
smb_check_perm_dacl() so the second check is useless.

Drop the unreachable code block, no functional impact intended.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Alexey Velichayshiy <[email protected]>
Acked-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
When a session is found but its state is not SMB2_SESSION_VALID, It
indicates that no valid session was found, but it is missing to decrement
the reference count acquired by the session lookup, which results in
a reference count leak. This patch fixes the issue by explicitly calling
ksmbd_user_session_put to release the reference to the session.

Cc: [email protected]
Reported-by: Alexandre <[email protected]>
Reported-by: Stanislas Polu <[email protected]>
Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
…length

The smb2_set_ea function, which handles Extended Attributes (EA),
was performing buffer validation checks that incorrectly omitted the size
of the null terminating character (+1 byte) for EA Name.
This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where
the null terminator is expected to be present in the buffer, ensuring
the validation accurately reflects the total required buffer size.

Cc: [email protected]
Reported-by: Roger <[email protected]>
Reported-by: Stanislas Polu <[email protected]>
Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
The kick_idle variable is no longer used, this commit therefore remove
it and also remove associated code in the do_pick_task_scx().

Signed-off-by: Zqiang <[email protected]>
Reviewed-by: Andrea Righi <[email protected]>
Reviewed-by: Emil Tsalapatis <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
maple_tree insertions can fail if we are seriously short on memory;
simple_offset_rename() does not recover well if it runs into that.
The same goes for simple_offset_rename_exchange().

Moreover, shmem_whiteout() expects that if it succeeds, the caller will
progress to d_move(), i.e. that shmem_rename2() won't fail past the
successful call of shmem_whiteout().

Not hard to fix, fortunately - mtree_store() can't fail if the index we
are trying to store into is already present in the tree as a singleton.

For simple_offset_rename_exchange() that's enough - we just need to be
careful about the order of operations.

For simple_offset_rename() solution is to preinsert the target into the
tree for new_dir; the rest can be done without any potentially failing
operations.

That preinsertion has to be done in shmem_rename2() rather than in
simple_offset_rename() itself - otherwise we'd need to deal with the
possibility of failure after successful shmem_whiteout().

Fixes: a2e4595 ("shmem: stable directory offsets")
Reviewed-by: Christian Brauner <[email protected]>
Reviewed-by: Chuck Lever <[email protected]>
Signed-off-by: Al Viro <[email protected]>
…/linux/kernel/git/tj/cgroup

Pull cgroup fix from Tejun Heo:

 - Fix a race condition in css_rstat_updated() where CMPXCHG without
   LOCK prefix could cause lnode corruption when the flusher runs
   concurrently on another CPU. The issue was introduced in 6.17 and
   causes memcg stats to become corrupted in production.

* tag 'cgroup-for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: rstat: use LOCK CMPXCHG in css_rstat_updated
…scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fixes from Tejun Heo:

 - Fix memory leak when destroying helper kthread workers during
   scheduler disable

 - Fix bypass depth accounting on scx_enable() failure which could leave
   the system permanently in bypass mode

 - Fix missing preemption handling when moving tasks to local DSQs via
   scx_bpf_dsq_move()

 - Misc fixes including NULL check for put_prev_task(), flushing stdout
   in selftests, and removing unused code

* tag 'sched_ext-for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  sched_ext: Remove unused code in the do_pick_task_scx()
  selftests/sched_ext: flush stdout before test to avoid log spam
  sched_ext: Fix missing post-enqueue handling in move_local_task_to_local_dsq()
  sched_ext: Factor out local_dsq_post_enq() from dispatch_enqueue()
  sched_ext: Fix bypass depth leak on scx_enable() failure
  sched/ext: Avoid null ptr traversal when ->put_prev_task() is called with NULL next
  sched_ext: Fix the memleak for sch->helper objects
…rnel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - fix missing btrfs_path release after printing a relocation error
   message

 - fix extent changeset leak on mmap write after failure to reserve
   metadata

 - fix fs devices list structure freeing, it could be potentially leaked
   under some circumstances

 - tree log fixes:
     - fix incremental directory logging where inodes for new dentries
       were incorrectly skipped
     - don't log conflicting inode if it's a directory moved in the
       current transaction

 - regression fixes:
     - fix incorrect btrfs_path freeing when it's auto-cleaned
     - revert commit simplifying preallocation of temporary structures
       in qgroup functions, some cases were not handled properly

* tag 'for-6.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix changeset leak on mmap write after failure to reserve metadata
  btrfs: fix memory leak of fs_devices in degraded seed device path
  btrfs: fix a potential path leak in print_data_reloc_error()
  Revert "btrfs: add ASSERTs on prealloc in qgroup functions"
  btrfs: do not skip logging new dentries when logging a new name
  btrfs: don't log conflicting inode if it's a dir moved in the current transaction
  btrfs: tests: fix double btrfs_path free in remove_extent_ref()
Pull smb server fixes from Steve French:

 - Fix set xattr name validation

 - Fix session refcount leak

 - Minor cleanup

 - smbdirect (RDMA) fixes: improve receive completion, and connect

* tag 'v6.19-rc1-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: fix buffer validation by including null terminator size in EA length
  ksmbd: Fix refcount leak when invalid session is found on session lookup
  ksmbd: remove redundant DACL check in smb_check_perm_dacl
  ksmbd: convert comma to semicolon
  smb: server: defer the initial recv completion logic to smb_direct_negotiate_recv_work()
  smb: server: initialize recv_io->cqe.done = recv_done just once
  smb: smbdirect: introduce smbdirect_socket.connect.{lock,work}
…it/viro/vfs

Pull shmem rename fixes from Al Viro:
 "A couple of shmem rename fixes - recent regression from tree-in-dcache
  series and older breakage from stable directory offsets stuff"

* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  shmem: fix recovery on rename failures
  shmem_whiteout(): fix regression from tree-in-dcache series
@sunflower2333 sunflower2333 merged commit 79c13ba into sunflower2333:master Dec 16, 2025
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