BTRFS info (device loop0): last unmount of filesystem ab1655b4-473b-4b4d-aed2-04d494efa044
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 PID: 28680 Comm: syz-executor.0 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
 drain_workqueue+0xc9/0x390 kernel/workqueue.c:3311
 destroy_workqueue+0xbe/0xc50 kernel/workqueue.c:4793
 btrfs_stop_all_workers+0xf4/0x2a0 fs/btrfs/disk-io.c:1789
 close_ctree+0x664/0xd40 fs/btrfs/disk-io.c:4368
 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: 0033:0x7fdeb707f0d7
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:00007ffef8a291d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fdeb707f0d7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffef8a29290
RBP: 00007ffef8a29290 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffef8a2a350
R13: 00007fdeb70c93b9 R14: 00000000001e381a R15: 0000000000000008
 </TASK>
BTRFS info (device loop0): last unmount of filesystem d71534f7-d2af-4f5c-acee-366696fd8c43
BTRFS info (device loop0): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): last unmount of filesystem a6456927-b5bb-454b-b0cc-0d097dc7e4ba
BTRFS info (device loop0): last unmount of filesystem 12b323f0-1f84-435f-9537-c71aa897355a
BTRFS info (device loop0): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): last unmount of filesystem 5aae3efb-6a44-4b94-b931-7ebd862b4905
BTRFS info (device loop0): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): last unmount of filesystem 5ef25c0c-6b3d-4f87-bd63-30476e3527dd
BTRFS info (device loop0): last unmount of filesystem b5679268-4323-4817-9f10-c9d8b81d9458
BTRFS info (device loop0): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): last unmount of filesystem 597acd41-52e4-427b-9a06-9085561455a9
BTRFS info (device loop0): last unmount of filesystem e9389b55-bdb4-4fa7-b79d-d15beb22bff0
BTRFS info (device loop0): last unmount of filesystem fe5f970f-6bb2-478d-b1b2-7f7999fb2a5d
BTRFS info (device loop0): last unmount of filesystem 7cb0cc48-870b-44c9-9f4e-39446b0f9378