BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6530 Comm: syz-executor.2 Not tainted 6.8.0-rc6-syzkaller-g9910665503b3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3816 [inline]
 validate_chain kernel/locking/lockdep.c:3837 [inline]
 __lock_acquire+0x1c58/0x763c kernel/locking/lockdep.c:5137
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754
 __flush_workqueue+0x14c/0x11c4 kernel/workqueue.c:3146
 btrfs_flush_workqueue+0x3c/0x94 fs/btrfs/async-thread.c:374
 close_ctree+0x2e4/0xdec fs/btrfs/disk-io.c:4297
 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:75
 generic_shutdown_super+0x128/0x2b8 fs/super.c:641
 kill_anon_super+0x4c/0x7c fs/super.c:1225
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2093
 deactivate_locked_super+0xc4/0x12c fs/super.c:472
 deactivate_super+0xe0/0x100 fs/super.c:505
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
BTRFS info (device loop2): last unmount of filesystem e53437eb-ffc8-42ae-b7d1-c30ffc0c4551
BTRFS info (device loop2): last unmount of filesystem 423dc591-ae2d-4958-9c87-0a97ad232e1d
BTRFS info (device loop2): last unmount of filesystem 7a1a4a14-e1f0-405a-957f-788500b1e25c
BTRFS info (device loop2): last unmount of filesystem c6e3ca4a-010f-47f3-b2fd-5c8dd3dd6a51
BTRFS info (device loop2): last unmount of filesystem 15600dbd-617e-49d6-b28e-dab782c8b951