BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 6503 Comm: syz-executor541 Not tainted 6.15.0-rc4-syzkaller-ge0f4c8dd9d2d #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 register_lock_class+0x310/0x348 kernel/locking/lockdep.c:1333 __lock_acquire+0xa8/0x3058 kernel/locking/lockdep.c:5110 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 touch_wq_lockdep_map+0xa8/0x164 kernel/workqueue.c:3907 __flush_workqueue+0xfc/0x109c kernel/workqueue.c:3949 drain_workqueue+0xa4/0x310 kernel/workqueue.c:4113 destroy_workqueue+0xb4/0xd94 kernel/workqueue.c:5858 btrfs_destroy_workqueue+0x48/0x2c0 fs/btrfs/async-thread.c:359 btrfs_stop_all_workers+0x1c0/0x240 fs/btrfs/disk-io.c:1789 close_ctree+0x5b8/0xae4 fs/btrfs/disk-io.c:4470 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:74 generic_shutdown_super+0x12c/0x2b8 fs/super.c:642 kill_anon_super+0x4c/0x7c fs/super.c:1237 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2099 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1435 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x16c/0x1ec 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+0xb0/0x150 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 BTRFS info (device loop3): last unmount of filesystem 4ef2f4d2-b5ec-4d56-8d0a-a91cf7b1edef BTRFS info (device loop3): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d BTRFS info (device loop3): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d BTRFS info (device loop3): last unmount of filesystem 91f187c7-55e2-4734-831b-627944e0a491 BTRFS info (device loop3): last unmount of filesystem a5ed04fe-6a9a-4271-aa92-92101f37ce68 BTRFS info (device loop3): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d BTRFS info (device loop3): last unmount of filesystem 876760b4-5504-40a0-8e4a-f44dce2adb54 BTRFS info (device loop3): last unmount of filesystem f04399ca-9b55-4f22-8b18-2783e5915283 BTRFS info (device loop3): last unmount of filesystem 169ca885-d365-4b18-b4f3-45adcdc7def8