BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 7758 Comm: syz-executor 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
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3856 [inline]
 validate_chain kernel/locking/lockdep.c:3877 [inline]
 __lock_acquire+0xf50/0x3058 kernel/locking/lockdep.c:5235
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866
 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested kernel/sched/core.c:605 [inline]
 raw_spin_rq_lock kernel/sched/sched.h:1513 [inline]
 rq_lock kernel/sched/sched.h:1837 [inline]
 __schedule+0x338/0x28d4 kernel/sched/core.c:6691
 preempt_schedule_notrace+0xc0/0x164 kernel/sched/core.c:7040
 rcu_is_watching+0xf4/0x134 kernel/rcu/tree.c:737
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x68/0x39c kernel/locking/lockdep.c:5877
 up_read+0x24/0x3c kernel/locking/rwsem.c:1619
 btrfs_tree_read_unlock+0xdc/0x298 fs/btrfs/locking.c:169
 btrfs_search_slot_get_root fs/btrfs/ctree.c:1729 [inline]
 btrfs_search_slot+0x4f4/0x21f0 fs/btrfs/ctree.c:2048
 btrfs_insert_empty_items+0xa4/0x17c fs/btrfs/ctree.c:4287
 btrfs_insert_empty_item fs/btrfs/ctree.h:673 [inline]
 add_free_space_extent fs/btrfs/free-space-tree.c:979 [inline]
 __add_to_free_space_tree+0x854/0xb98 fs/btrfs/free-space-tree.c:1016
 add_to_free_space_tree+0x114/0x2e4 fs/btrfs/free-space-tree.c:1045
 do_free_extent_accounting fs/btrfs/extent-tree.c:2971 [inline]
 __btrfs_free_extent+0x1318/0x2b74 fs/btrfs/extent-tree.c:3340
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1747 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1773 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1970 [inline]
 __btrfs_run_delayed_refs+0xb94/0x31c8 fs/btrfs/extent-tree.c:2040
 btrfs_run_delayed_refs+0xc4/0x2e8 fs/btrfs/extent-tree.c:2152
 btrfs_commit_transaction+0x1fc/0x2a50 fs/btrfs/transaction.c:2209
 btrfs_sync_fs+0x504/0x9a0 fs/btrfs/super.c:1040
 sync_filesystem+0x1a0/0x218 fs/sync.c:66
 generic_shutdown_super+0x70/0x2b8 fs/super.c:621
 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 loop1): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf