BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6622 Comm: syz-executor 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
 local_lock_acquire+0x4c/0x19c include/linux/local_lock_internal.h:29
 __radix_tree_preload+0x98/0x420 lib/radix-tree.c:332
 radix_tree_preload+0x38/0x54 lib/radix-tree.c:367
 alloc_extent_buffer+0x7e4/0xf20 fs/btrfs/extent_io.c:6230
 btrfs_find_create_tree_block+0x3c/0x50 fs/btrfs/disk-io.c:1027
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4802 [inline]
 btrfs_alloc_tree_block+0x1f8/0x112c fs/btrfs/extent-tree.c:4921
 btrfs_force_cow_block+0x3a8/0x1700 fs/btrfs/ctree.c:425
 btrfs_cow_block+0x2d8/0x66c fs/btrfs/ctree.c:598
 btrfs_search_slot+0xa10/0x1f4c fs/btrfs/ctree.c:1858
 btrfs_insert_empty_items+0x1e0/0x2a8 fs/btrfs/ctree.c:4012
 btrfs_insert_empty_item fs/btrfs/ctree.h:2957 [inline]
 btrfs_insert_orphan_item+0xc8/0x12c fs/btrfs/orphan.c:24
 btrfs_orphan_add+0xdc/0x270 fs/btrfs/inode.c:3507
 btrfs_unlink+0x1ac/0x258 fs/btrfs/inode.c:4281
 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