loop3: rw=1, sector=5101991704, nr_sectors = 2 limit=32768
gfs2: fsid=syz:syz.0: Error 10 writing to journal, jid=0
gfs2: fsid=syz:syz.0: fatal: I/O error(s)
gfs2: fsid=syz:syz.0: about to withdraw this file system
BUG: sleeping function called from invalid context at kernel/sched/completion.c:101
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4948, name: gfs2_logd
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by gfs2_logd/4948:
 #0: ffff0000c3035058 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0xb0/0x1aa0 fs/gfs2/log.c:1043
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline]
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_flush_revokes+0x48/0x88 fs/gfs2/log.c:814
 #2: ffff0000c3035248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:155 [inline]
 #2: ffff0000c3035248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x424/0x13a8 fs/gfs2/util.c:354
Preemption disabled at:
[<ffff80000a1a7f14>] spin_lock include/linux/spinlock.h:351 [inline]
[<ffff80000a1a7f14>] gfs2_log_lock fs/gfs2/log.h:32 [inline]
[<ffff80000a1a7f14>] gfs2_flush_revokes+0x48/0x88 fs/gfs2/log.c:814
CPU: 0 PID: 4948 Comm: gfs2_logd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 __might_resched+0x350/0x4cc kernel/sched/core.c:9966
 __might_sleep+0x94/0x110 kernel/sched/core.c:9895
 __wait_for_common kernel/sched/completion.c:101 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x24/0x5c kernel/sched/completion.c:138
 kthread_stop+0x1d0/0x810 kernel/kthread.c:711
 signal_our_withdraw fs/gfs2/util.c:159 [inline]
 gfs2_withdraw+0x48c/0x13a8 fs/gfs2/util.c:354
 gfs2_ail1_empty+0x740/0x7d0 fs/gfs2/log.c:377
 gfs2_flush_revokes+0x54/0x88 fs/gfs2/log.c:815
 revoke_lo_before_commit+0x3c/0x608 fs/gfs2/lops.c:869
 lops_before_commit fs/gfs2/lops.h:40 [inline]
 gfs2_log_flush+0x828/0x1aa0 fs/gfs2/log.c:1102
 gfs2_logd+0x28c/0xb90 fs/gfs2/log.c:1322
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
BUG: scheduling while atomic: gfs2_logd/4948/0x00000002
3 locks held by gfs2_logd/4948:
 #0: ffff0000c3035058 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0xb0/0x1aa0 fs/gfs2/log.c:1043
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline]
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_flush_revokes+0x48/0x88 fs/gfs2/log.c:814
 #2: ffff0000c3035248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:155 [inline]
 #2: ffff0000c3035248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x424/0x13a8 fs/gfs2/util.c:354
Modules linked in:
Preemption disabled at:
[<ffff80000a1a7f14>] spin_lock include/linux/spinlock.h:351 [inline]
[<ffff80000a1a7f14>] gfs2_log_lock fs/gfs2/log.h:32 [inline]
[<ffff80000a1a7f14>] gfs2_flush_revokes+0x48/0x88 fs/gfs2/log.c:814
CPU: 0 PID: 4948 Comm: gfs2_logd Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 __schedule_bug+0x124/0x1c8 kernel/sched/core.c:5792
 schedule_debug kernel/sched/core.c:5819 [inline]
 __schedule+0xe68/0x1b18 kernel/sched/core.c:6454
 schedule+0xc4/0x170 kernel/sched/core.c:6637
 schedule_timeout+0x180/0x2c8 kernel/time/timer.c:1965
 signal_our_withdraw fs/gfs2/util.c:169 [inline]
 gfs2_withdraw+0x57c/0x13a8 fs/gfs2/util.c:354
 gfs2_ail1_empty+0x740/0x7d0 fs/gfs2/log.c:377
 gfs2_flush_revokes+0x54/0x88 fs/gfs2/log.c:815
 revoke_lo_before_commit+0x3c/0x608 fs/gfs2/lops.c:869
 lops_before_commit fs/gfs2/lops.h:40 [inline]
 gfs2_log_flush+0x828/0x1aa0 fs/gfs2/log.c:1102
 gfs2_logd+0x28c/0xb90 fs/gfs2/log.c:1322
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount.
gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0

=============================
[ BUG: Invalid wait context ]
syzkaller #0 Tainted: G        W         
-----------------------------
gfs2_logd/4948 is trying to lock:
ffff800017a5da08 (uevent_sock_mutex){+.+.}-{3:3}, at: kobject_uevent_env+0x4cc/0x868 lib/kobject_uevent.c:601
other info that might help us debug this:
context-{4:4}
2 locks held by gfs2_logd/4948:
 #0: ffff0000c3035058 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0xb0/0x1aa0 fs/gfs2/log.c:1043
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline]
 #1: ffff0000c3034e80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_flush_revokes+0x48/0x88 fs/gfs2/log.c:814
stack backtrace:
CPU: 0 PID: 4948 Comm: gfs2_logd Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4701 [inline]
 check_wait_context kernel/locking/lockdep.c:4762 [inline]
 __lock_acquire+0x1adc/0x6544 kernel/locking/lockdep.c:4999
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 __mutex_lock_common+0x190/0x1f38 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 kobject_uevent_env+0x4cc/0x868 lib/kobject_uevent.c:601
 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:657
 gfs2_withdraw+0xec4/0x13a8 fs/gfs2/util.c:356
 gfs2_ail1_empty+0x740/0x7d0 fs/gfs2/log.c:377
 gfs2_flush_revokes+0x54/0x88 fs/gfs2/log.c:815
 revoke_lo_before_commit+0x3c/0x608 fs/gfs2/lops.c:869
 lops_before_commit fs/gfs2/lops.h:40 [inline]
 gfs2_log_flush+0x828/0x1aa0 fs/gfs2/log.c:1102
 gfs2_logd+0x28c/0xb90 fs/gfs2/log.c:1322
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
gfs2: fsid=syz:syz.0: File system withdrawn
CPU: 1 PID: 4948 Comm: gfs2_logd Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 gfs2_withdraw+0xf9c/0x13a8 fs/gfs2/util.c:366
 gfs2_ail1_empty+0x740/0x7d0 fs/gfs2/log.c:377
 gfs2_flush_revokes+0x54/0x88 fs/gfs2/log.c:815
 revoke_lo_before_commit+0x3c/0x608 fs/gfs2/lops.c:869
 lops_before_commit fs/gfs2/lops.h:40 [inline]
 gfs2_log_flush+0x828/0x1aa0 fs/gfs2/log.c:1102
 gfs2_logd+0x28c/0xb90 fs/gfs2/log.c:1322
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850