BTRFS info (device loop2): last unmount of filesystem 179fd4b2-7b8e-452d-b123-100f21afa7ab
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 PID: 20687 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller #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_destroy_workqueue+0x45/0x240 fs/btrfs/async-thread.c:361
 btrfs_stop_all_workers+0x63/0x2a0 fs/btrfs/disk-io.c:1784
 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: 0033:0x7f391467f0d7
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:00007ffcb48eb888 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f391467f0d7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffcb48eb940
RBP: 00007ffcb48eb940 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcb48eca00
R13: 00007f39146c93b9 R14: 00000000001ee0f4 R15: 0000000000000003
 </TASK>
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem 007397b5-6cdb-4dfc-93ff-12f80a2f91d7
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem cc65d079-12be-433d-9e52-1fc11b971c1c
BTRFS info (device loop2): last unmount of filesystem 9da471aa-ac32-45c6-bd35-10167f73cac0
BTRFS info (device loop2): last unmount of filesystem 2a0fbc45-c86a-49de-b1cf-ee06695429dc
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem a324a02d-d991-4d97-9866-916f8afaa4a9
BTRFS info (device loop2): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop2): last unmount of filesystem 15d7a1e5-215d-45d6-b99f-000aff81cfb7