BTRFS info (device loop0): balance: start -d -m
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 8348 Comm: syz.0.208 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (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:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 __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]
 add_delayed_ref+0x700/0x1990 fs/btrfs/delayed-ref.c:1040
 btrfs_add_delayed_tree_ref+0x94/0x148 fs/btrfs/delayed-ref.c:1094
 btrfs_alloc_tree_block+0x9e0/0xe5c fs/btrfs/extent-tree.c:5219
 btrfs_force_cow_block+0x404/0x2044 fs/btrfs/ctree.c:517
 btrfs_cow_block+0x3d4/0x934 fs/btrfs/ctree.c:699
 btrfs_search_slot+0x9ec/0x2268 fs/btrfs/ctree.c:2097
 btrfs_search_prev_slot fs/btrfs/free-space-tree.c:136 [inline]
 add_free_space_extent+0x2dc/0x9c8 fs/btrfs/free-space-tree.c:918
 __btrfs_add_to_free_space_tree+0x190/0x234 fs/btrfs/free-space-tree.c:1019
 btrfs_add_to_free_space_tree+0x118/0x554 fs/btrfs/free-space-tree.c:1048
 do_free_extent_accounting fs/btrfs/extent-tree.c:3003 [inline]
 __btrfs_free_extent+0x10c0/0x3b70 fs/btrfs/extent-tree.c:3372
 run_one_delayed_ref fs/btrfs/extent-tree.c:-1 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1972 [inline]
 __btrfs_run_delayed_refs+0xbac/0x377c fs/btrfs/extent-tree.c:2047
 btrfs_run_delayed_refs+0xc4/0x394 fs/btrfs/extent-tree.c:2159
 commit_cowonly_roots+0x524/0x6fc fs/btrfs/transaction.c:1378
 btrfs_commit_transaction+0x10d0/0x2ce4 fs/btrfs/transaction.c:2462
 prepare_to_merge+0x700/0x1540 fs/btrfs/relocation.c:1786
 relocate_block_group+0x954/0xb64 fs/btrfs/relocation.c:3641
 btrfs_relocate_block_group+0x654/0xacc fs/btrfs/relocation.c:3978
 btrfs_relocate_chunk+0x108/0x54c fs/btrfs/volumes.c:3446
 __btrfs_balance+0x1358/0x1d30 fs/btrfs/volumes.c:4222
 btrfs_balance+0x8cc/0xf58 fs/btrfs/volumes.c:4599
 btrfs_ioctl_balance+0x350/0x550 fs/btrfs/ioctl.c:3577
 btrfs_ioctl+0xb04/0xc3c fs/btrfs/ioctl.c:5298
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
BTRFS info (device loop0): found 9 extents, stage: move data extents
BTRFS info (device loop0): found 1 extents, stage: update data pointers
BTRFS info (device loop0): balance: ended with status: 0