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BUG: sleeping function called from invalid context in jfs_fsync

Status: auto-obsoleted due to no activity on 2026/07/11 01:31
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+c266ffd7d9f1769517ec@syzkaller.appspotmail.com
First crash: 510d, last: 201d
▶ ▼ ✨ AI Jobs (6)
ID Workflow Result Correct Bug Created Started Finished Revision Error
796418c4-c646-4cce-b2d0-18c860475520 assessment-security 💥 BUG: sleeping function called from invalid context in jfs_fsync 2026/07/05 02:54 2026/07/05 02:54 2026/07/05 02:54 93f579545ae410f5bccfa141d2e7bf03178f036c 
failed to run ["git" "-c" "core.hooksPath=/dev/null" "checkout" "e6747d19291c54f939c2eab76dee2753686398a7"]: exit status 128
error: Could not read 21aed424da8381a09dadb5922ae3dd2bda603374
15607859-1b27-458b-a7d1-10b388a79c35 assessment-security 💥 BUG: sleeping function called from invalid context in jfs_fsync 2026/06/18 02:30 2026/06/18 02:30 2026/06/18 02:30 b62b3ded1759f79b37600c5ffe2b0a81b919b0b0 
failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "--tags" "433dfd5a8a5d80bbf0669b14e9ed908911a52dd6" "e6747d19291c54f939c2eab76dee2753686398a7"]: exit status 128
error: insuffici...
truncated to first 200 bytes; open job for full error
3bcbde69-6027-4bb3-a01f-22270866fe61 assessment-security 💥 BUG: sleeping function called from invalid context in jfs_fsync 2026/06/09 22:37 2026/06/09 22:37 2026/06/09 22:37 c36c07f6c1f2230a36374cbd22235f635e8f9284 
failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "--tags" "433dfd5a8a5d80bbf0669b14e9ed908911a52dd6" "e6747d19291c54f939c2eab76dee2753686398a7"]: exit status 128
error: insuffici...
truncated to first 200 bytes; open job for full error
941548b6-c9a4-4596-a819-d4b7258f426c assessment-security 💥 BUG: sleeping function called from invalid context in jfs_fsync 2026/06/03 00:19 2026/06/03 00:19 2026/06/03 00:55 62fe15281f5011cd203d8845b8767b10e7443aa5 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/7fb091b4c919aa9798...
truncated to first 200 bytes; open job for full error
d4e38188-c495-4a4c-8d0c-7e1d13d50943 assessment-security 💥 BUG: sleeping function called from invalid context in jfs_fsync 2026/05/31 23:08 2026/05/31 23:08 2026/05/31 23:31 6b4a844333e83556da95d61d7f207e7ef5cd4bc6 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/7fb091b4c919aa9798...
truncated to first 200 bytes; open job for full error
f30adfe2-44d1-4fdd-8454-770148e08c1b assessment-security 💥 BUG: sleeping function called from invalid context in jfs_fsync 2026/05/15 07:23 2026/05/15 07:23 2026/05/15 07:24 6ccb967e465e832a7bfd7a116ad00d52a0923a5d 
failed to run ["git" "-c" "core.hooksPath=/dev/null" "checkout" "e6747d19291c54f939c2eab76dee2753686398a7"]: exit status 128
Previous HEAD position was 971199ad2a0f Merge tag 'arm64-fixes' of git://gi...
truncated to first 200 bytes; open job for full error
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [jfs?] BUG: sleeping function called from invalid context in jfs_fsync 0 (1) 2025/02/24 05:02
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 BUG: sleeping function called from invalid context in jfs_fsync origin:upstream 5 C error 6 502d 502d 0/3 upstream: reported C repro on 2025/02/28 03:26
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/07/11 01:00 30m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2026/05/15 05:28 35m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2026/05/15 05:17 30m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2026/05/01 13:12 45m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/03/06 02:49 1h11m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/03/06 02:48 57m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/19 23:17 30m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/19 22:40 38m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2025/12/25 21:48 27m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/12/11 21:15 22m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log

Sample crash report:
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 16, name: ksoftirqd/0
preempt_count: 100, expected: 0
RCU nest depth: 0, expected: 0
no locks held by ksoftirqd/0/16.
Preemption disabled at:
[<ffff8000803110e4>] softirq_handle_begin kernel/softirq.c:402 [inline]
[<ffff8000803110e4>] handle_softirqs+0xe0/0xd34 kernel/softirq.c:537
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.14.0-rc3-syzkaller-ge6747d19291c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x374/0x4d0 kernel/sched/core.c:8767
 __might_sleep+0x90/0xe4 kernel/sched/core.c:8696
 down_write+0x28/0xc0 kernel/locking/rwsem.c:1576
 inode_lock include/linux/fs.h:877 [inline]
 jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:2970 [inline]
 dio_complete+0x510/0x6b8 fs/direct-io.c:313
 dio_bio_end_aio+0x488/0x550 fs/direct-io.c:368
 bio_endio+0x840/0x87c block/bio.c:1548
 blk_update_request+0x4ac/0xda0 block/blk-mq.c:983
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1145
 lo_complete_rq+0x188/0x2f4 drivers/block/loop.c:395
 blk_complete_reqs block/blk-mq.c:1220 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1225
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:950
 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

=============================
[ BUG: Invalid wait context ]
6.14.0-rc3-syzkaller-ge6747d19291c #0 Tainted: G        W         
-----------------------------
ksoftirqd/0/16 is trying to lock:
ffff0000dd220578 (&sb->s_type->i_mutex_key#18){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
ffff0000dd220578 (&sb->s_type->i_mutex_key#18){+.+.}-{4:4}, at: jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
other info that might help us debug this:
context-{3:3}
no locks held by ksoftirqd/0/16.
stack backtrace:
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Tainted: G        W          6.14.0-rc3-syzkaller-ge6747d19291c #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
 check_wait_context kernel/locking/lockdep.c:4900 [inline]
 __lock_acquire+0x2034/0x7904 kernel/locking/lockdep.c:5178
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851
 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577
 inode_lock include/linux/fs.h:877 [inline]
 jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:2970 [inline]
 dio_complete+0x510/0x6b8 fs/direct-io.c:313
 dio_bio_end_aio+0x488/0x550 fs/direct-io.c:368
 bio_endio+0x840/0x87c block/bio.c:1548
 blk_update_request+0x4ac/0xda0 block/blk-mq.c:983
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1145
 lo_complete_rq+0x188/0x2f4 drivers/block/loop.c:395
 blk_complete_reqs block/blk-mq.c:1220 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1225
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:950
 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 16, name: ksoftirqd/0
preempt_count: 100, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff8000803110e4>] softirq_handle_begin kernel/softirq.c:402 [inline]
[<ffff8000803110e4>] handle_softirqs+0xe0/0xd34 kernel/softirq.c:537
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Tainted: G        W          6.14.0-rc3-syzkaller-ge6747d19291c #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x374/0x4d0 kernel/sched/core.c:8767
 __might_sleep+0x90/0xe4 kernel/sched/core.c:8696
 down_write+0x28/0xc0 kernel/locking/rwsem.c:1576
 inode_lock include/linux/fs.h:877 [inline]
 jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:2970 [inline]
 dio_complete+0x510/0x6b8 fs/direct-io.c:313
 dio_bio_end_aio+0x488/0x550 fs/direct-io.c:368
 bio_endio+0x840/0x87c block/bio.c:1548
 blk_update_request+0x4ac/0xda0 block/blk-mq.c:983
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1145
 lo_complete_rq+0x188/0x2f4 drivers/block/loop.c:395
 blk_complete_reqs block/blk-mq.c:1220 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1225
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:950
 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 16, name: ksoftirqd/0
preempt_count: 100, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff8000803110e4>] softirq_handle_begin kernel/softirq.c:402 [inline]
[<ffff8000803110e4>] handle_softirqs+0xe0/0xd34 kernel/softirq.c:537
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Tainted: G        W          6.14.0-rc3-syzkaller-ge6747d19291c #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x374/0x4d0 kernel/sched/core.c:8767
 __might_sleep+0x90/0xe4 kernel/sched/core.c:8696
 down_write+0x28/0xc0 kernel/locking/rwsem.c:1576
 inode_lock include/linux/fs.h:877 [inline]
 jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:2970 [inline]
 dio_complete+0x510/0x6b8 fs/direct-io.c:313
 dio_bio_end_aio+0x488/0x550 fs/direct-io.c:368
 bio_endio+0x840/0x87c block/bio.c:1548
 blk_update_request+0x4ac/0xda0 block/blk-mq.c:983
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1145
 lo_complete_rq+0x188/0x2f4 drivers/block/loop.c:395
 blk_complete_reqs block/blk-mq.c:1220 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1225
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:950
 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 16, name: ksoftirqd/0
preempt_count: 100, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff8000803110e4>] softirq_handle_begin kernel/softirq.c:402 [inline]
[<ffff8000803110e4>] handle_softirqs+0xe0/0xd34 kernel/softirq.c:537
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Tainted: G        W          6.14.0-rc3-syzkaller-ge6747d19291c #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x374/0x4d0 kernel/sched/core.c:8767
 __might_sleep+0x90/0xe4 kernel/sched/core.c:8696
 down_write+0x28/0xc0 kernel/locking/rwsem.c:1576
 inode_lock include/linux/fs.h:877 [inline]
 jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:2970 [inline]
 dio_complete+0x510/0x6b8 fs/direct-io.c:313
 dio_bio_end_aio+0x488/0x550 fs/direct-io.c:368
 bio_endio+0x840/0x87c block/bio.c:1548
 blk_update_request+0x4ac/0xda0 block/blk-mq.c:983
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1145
 lo_complete_rq+0x188/0x2f4 drivers/block/loop.c:395
 blk_complete_reqs block/blk-mq.c:1220 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1225
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:950
 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 16, name: ksoftirqd/0
preempt_count: 100, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff8000803110e4>] softirq_handle_begin kernel/softirq.c:402 [inline]
[<ffff8000803110e4>] handle_softirqs+0xe0/0xd34 kernel/softirq.c:537
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Tainted: G        W          6.14.0-rc3-syzkaller-ge6747d19291c #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x374/0x4d0 kernel/sched/core.c:8767
 __might_sleep+0x90/0xe4 kernel/sched/core.c:8696
 down_write+0x28/0xc0 kernel/locking/rwsem.c:1576
 inode_lock include/linux/fs.h:877 [inline]
 jfs_fsync+0xa0/0x1d4 fs/jfs/file.c:28
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:2970 [inline]
 dio_complete+0x510/0x6b8 fs/direct-io.c:313
 dio_bio_end_aio+0x488/0x550 fs/direct-io.c:368
 bio_endio+0x840/0x87c block/bio.c:1548
 blk_update_request+0x4ac/0xda0 block/blk-mq.c:983
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1145
 lo_complete_rq+0x188/0x2f4 drivers/block/loop.c:395
 blk_complete_reqs block/blk-mq.c:1220 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1225
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:950
 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/20 07:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e6747d19291c cbd8edab .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-gce-arm64 BUG: sleeping function called from invalid context in jfs_fsync
2025/02/20 06:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e6747d19291c cbd8edab .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-gce-arm64 BUG: sleeping function called from invalid context in jfs_fsync
2025/02/20 04:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e6747d19291c cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: sleeping function called from invalid context in jfs_fsync
* Struck through repros no longer work on HEAD.