BTRFS info (device loop2): last unmount of filesystem c37245d1-e6e6-4610-be46-344dbe0f773d
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 PID: 9021 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-00260-gfa4b851b4ad6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 register_lock_class+0x822/0x980 kernel/locking/lockdep.c:1321
 __lock_acquire+0xd9/0x1fd0 kernel/locking/lockdep.c:5014
 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
 __flush_workqueue+0x174/0x1630 kernel/workqueue.c:3146
 close_ctree+0x3d5/0xd40 fs/btrfs/disk-io.c:4325
 generic_shutdown_super+0x136/0x2d0 fs/super.c:641
 kill_anon_super+0x3b/0x70 fs/super.c:1225
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2093
 deactivate_locked_super+0xc4/0x130 fs/super.c:472
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267
 task_work_run+0x24e/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:108 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x167/0x360 kernel/entry/common.c:212
 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f7a3d87f0d7
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffcf74c4978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7a3d87f0d7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffcf74c4a30
RBP: 00007ffcf74c4a30 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcf74c5af0
R13: 00007f7a3d8c93b9 R14: 0000000000207973 R15: 0000000000000006
 </TASK>
BTRFS info (device loop2): last unmount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2
BTRFS info (device loop2): last unmount of filesystem 2411b439-d643-49ee-8c34-62c6aec699f4
BTRFS info (device loop2): last unmount of filesystem 2285b517-8022-4080-b11c-3eed9c313a58
BTRFS info (device loop2): last unmount of filesystem 8e5d3e25-9fb3-4168-9f32-7ebf47367139
BTRFS info (device loop2): last unmount of filesystem e837f5f2-f956-464b-98f7-59b1c339b49d
BTRFS info (device loop2): last unmount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2
BTRFS info (device loop2): last unmount of filesystem ff6c4afd-f666-4fcf-befb-23c848acb205
BTRFS info (device loop2): last unmount of filesystem 4eea06ed-1df4-4a76-9251-5d07734049b3
BTRFS info (device loop2): last unmount of filesystem 46c08a88-0440-4cb2-ac28-f48c953ad7b2
BTRFS info (device loop2): last unmount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2