BTRFS info (device loop7): enabling auto defrag
BTRFS info (device loop7): disabling tree log
BTRFS info (device loop7): using free space tree
Process accounting resumed
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6611 Comm: syz.7.414 Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b88/0x7680 kernel/locking/lockdep.c:5049
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162
 __debug_check_no_obj_freed lib/debugobjects.c:968 [inline]
 debug_check_no_obj_freed+0x14c/0x478 lib/debugobjects.c:1009
 slab_free_hook mm/slub.c:1699 [inline]
 slab_free_freelist_hook mm/slub.c:1750 [inline]
 slab_free mm/slub.c:3661 [inline]
 kmem_cache_free+0x29c/0x588 mm/slub.c:3683
 drop_delayed_ref+0x354/0x4a0 fs/btrfs/delayed-ref.c:443
 insert_delayed_ref+0x60c/0x7b0 fs/btrfs/delayed-ref.c:636
 btrfs_add_delayed_tree_ref+0x750/0xe58 fs/btrfs/delayed-ref.c:973
 btrfs_free_tree_block+0x30c/0xb50 fs/btrfs/extent-tree.c:3283
 btrfs_force_cow_block+0xc7c/0x1b48 fs/btrfs/ctree.c:498
 btrfs_cow_block+0x2e8/0x71c fs/btrfs/ctree.c:616
 btrfs_search_slot+0xb64/0x2928 fs/btrfs/ctree.c:2080
 btrfs_insert_empty_items+0xa4/0x178 fs/btrfs/ctree.c:4178
 btrfs_insert_delayed_item fs/btrfs/delayed-inode.c:743 [inline]
 btrfs_insert_delayed_items fs/btrfs/delayed-inode.c:821 [inline]
 __btrfs_commit_inode_delayed_items+0xa34/0x1c5c fs/btrfs/delayed-inode.c:1108
 __btrfs_run_delayed_items+0x1bc/0x450 fs/btrfs/delayed-inode.c:1153
 btrfs_run_delayed_items+0x24/0x34 fs/btrfs/delayed-inode.c:1190
 btrfs_commit_transaction+0x1100/0x2cd4 fs/btrfs/transaction.c:2386
 create_snapshot+0x4fc/0x834 fs/btrfs/ioctl.c:856
 btrfs_mksubvol+0x5f4/0x718 fs/btrfs/ioctl.c:1008
 btrfs_mksnapshot+0xc8/0x158 fs/btrfs/ioctl.c:1054
 __btrfs_ioctl_snap_create+0x314/0x3fc fs/btrfs/ioctl.c:2218
 btrfs_ioctl_snap_create_v2+0x1a4/0x38c fs/btrfs/ioctl.c:2305
 btrfs_ioctl+0x9b4/0xb08
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585