BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 5973 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 register_lock_class+0x2a9/0x2e0 kernel/locking/lockdep.c:1332
 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112
 lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3990
 __flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:4032
 drain_workqueue+0xd3/0x390 kernel/workqueue.c:4196
 destroy_workqueue+0xbb/0xc60 kernel/workqueue.c:5966
 btrfs_destroy_workqueue+0x45/0x210 fs/btrfs/async-thread.c:358
 btrfs_stop_all_workers+0x1b9/0x260 fs/btrfs/disk-io.c:1733
 close_ctree+0x6fc/0x13b0 fs/btrfs/disk-io.c:4440
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_anon_super+0x3b/0x70 fs/super.c:1292
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f842112d1d7
Code: a2 c7 05 bc e3 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc523c3bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f84211c1c3b RCX: 00007f842112d1d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc523c3c80
RBP: 00007ffc523c3c80 R08: 00007ffc523c4c80 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc523c4d10
R13: 00007f84211c1c3b R14: 00000000000b1bf2 R15: 00007ffc523c4d50
 </TASK>
BTRFS info (device loop4): last unmount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop4): last unmount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop4): last unmount of filesystem 1bd68a77-3af5-4c91-99cc-4ddb75703e79
BTRFS info (device loop4): last unmount of filesystem 0a1db31e-cd64-4f1b-9d34-93f94622a7ea
BTRFS info (device loop4): last unmount of filesystem 3a5ae748-5920-433d-adcf-36a585bcec49
BTRFS info (device loop4): last unmount of filesystem 224195b8-f7b5-426f-8e12-546bbc4a4e9e
BTRFS info (device loop4): last unmount of filesystem 6445352f-725f-4a75-aa1b-19748485feda
BTRFS info (device loop4): last unmount of filesystem 6cd6d96c-cc57-4b85-82b5-79d06ba41498
BTRFS info (device loop4): last unmount of filesystem 1e1d4f24-b8b6-46a5-9eda-7c6edd68c6dd
BTRFS info (device loop4): last unmount of filesystem 9306d3ec-cdb9-40e1-8480-13a6840f1da6
BTRFS info (device loop4): last unmount of filesystem 743c25d5-2946-4726-b5de-879454c51fee
BTRFS info (device loop4): last unmount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop4): last unmount of filesystem 169e0395-9895-46c4-9265-a432c9438fbc
BTRFS info (device loop4): last unmount of filesystem 5bc2069c-ab3a-4ca8-9af8-f6ee1b9a648d
BTRFS info (device loop4): last unmount of filesystem 4c309fce-bd7c-4ec6-81c1-9444f09e5eef