BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 11571 Comm: syz-executor Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b64/0x7638 kernel/locking/lockdep.c:5012
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623
 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
 remove_from_free_space_tree+0x154/0xb78 fs/btrfs/free-space-tree.c:836
 alloc_reserved_tree_block fs/btrfs/extent-tree.c:4697 [inline]
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1687 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1716 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1962 [inline]
 __btrfs_run_delayed_refs+0x15f0/0x3d50 fs/btrfs/extent-tree.c:2025
 btrfs_run_delayed_refs+0x11c/0x47c fs/btrfs/extent-tree.c:2156
 btrfs_commit_transaction+0x1b8/0x30f0 fs/btrfs/transaction.c:2166
 btrfs_commit_super+0xb4/0xd0 fs/btrfs/disk-io.c:4338
 close_ctree+0x394/0x87c fs/btrfs/disk-io.c:4461
 btrfs_put_super+0x40/0x50 fs/btrfs/super.c:340
 generic_shutdown_super+0x130/0x2f0 fs/super.c:475
 kill_anon_super+0x4c/0x74 fs/super.c:1089
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2391
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584