BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 8461 Comm: syz.7.1159 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b30/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0xb0/0x10c kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:363 [inline]
 btrfs_set_inode_last_trans fs/btrfs/transaction.h:180 [inline]
 btrfs_update_inode+0x278/0x3d4 fs/btrfs/inode.c:4098
 __btrfs_unlink_inode+0x6e0/0xb00 fs/btrfs/inode.c:4221
 btrfs_rename fs/btrfs/inode.c:9940 [inline]
 btrfs_rename2+0x1c18/0x30c0 fs/btrfs/inode.c:10044
 vfs_rename+0x954/0xdcc fs/namei.c:4832
 ovl_do_rename fs/overlayfs/overlayfs.h:258 [inline]
 ovl_cleanup_and_whiteout+0x2b0/0x4f4 fs/overlayfs/dir.c:125
 ovl_remove_and_whiteout fs/overlayfs/dir.c:800 [inline]
 ovl_do_remove+0x594/0x858 fs/overlayfs/dir.c:927
 ovl_unlink+0x24/0x34 fs/overlayfs/dir.c:955
 vfs_unlink+0x2e0/0x4f4 fs/namei.c:4280
 do_unlinkat+0x31c/0x600 fs/namei.c:4348
 __do_sys_unlinkat fs/namei.c:4391 [inline]
 __se_sys_unlinkat fs/namei.c:4384 [inline]
 __arm64_sys_unlinkat+0xe0/0xfc fs/namei.c:4384
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584