BTRFS info (device loop8): first mount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop8): using sha256 (sha256-ce) checksum algorithm
BTRFS info (device loop8): using free-space-tree
BTRFS info (device loop8): rebuilding free space tree
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 8095 Comm: syz.8.228 Not tainted 6.15.0-rc5-syzkaller-gc32f8dc5aaf9 #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 include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 btrfs_add_reserved_bytes+0x6c/0x7b8 fs/btrfs/block-group.c:3796
 find_free_extent+0x33ac/0x4948 fs/btrfs/extent-tree.c:4547
 btrfs_reserve_extent+0x228/0x4f0 fs/btrfs/extent-tree.c:4674
 btrfs_alloc_tree_block+0x180/0xeb0 fs/btrfs/extent-tree.c:5127
 btrfs_force_cow_block+0x408/0x1bb8 fs/btrfs/ctree.c:506
 btrfs_cow_block+0x3f8/0x838 fs/btrfs/ctree.c:688
 btrfs_search_slot+0x9c0/0x21f0 fs/btrfs/ctree.c:2088
 btrfs_insert_empty_items+0xa4/0x17c fs/btrfs/ctree.c:4287
 btrfs_insert_empty_item fs/btrfs/ctree.h:673 [inline]
 btrfs_add_root_ref+0x348/0x598 fs/btrfs/root-tree.c:434
 create_pending_snapshot+0xa9c/0x23b0 fs/btrfs/transaction.c:1824
 create_pending_snapshots+0x150/0x198 fs/btrfs/transaction.c:1926
 btrfs_commit_transaction+0xfac/0x2a50 fs/btrfs/transaction.c:2412
 create_snapshot+0x4f4/0x834 fs/btrfs/ioctl.c:782
 btrfs_mksubvol+0x438/0x588 fs/btrfs/ioctl.c:936
 btrfs_mksnapshot+0xc0/0x150 fs/btrfs/ioctl.c:980
 __btrfs_ioctl_snap_create+0x310/0x3f0 fs/btrfs/ioctl.c:1245
 btrfs_ioctl_snap_create+0x138/0x178 fs/btrfs/ioctl.c:1273
 btrfs_ioctl+0x4b0/0xc38 fs/btrfs/ioctl.c:-1
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:892
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600