BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 10272 Comm: syz.3.510 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
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+0x140/0x2e0 kernel/locking/lockdep.c:5868
 down_write_nested+0x58/0xcc kernel/locking/rwsem.c:1706
 inode_lock_nested include/linux/fs.h:1072 [inline]
 lock_two_nondirectories+0xf0/0x150 fs/inode.c:1252
 vfs_rename+0x5d4/0xd0c fs/namei.c:5892
 ovl_do_rename_rd fs/overlayfs/overlayfs.h:364 [inline]
 ovl_check_rename_whiteout fs/overlayfs/super.c:598 [inline]
 ovl_make_workdir fs/overlayfs/super.c:717 [inline]
 ovl_get_workdir fs/overlayfs/super.c:840 [inline]
 ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
 ovl_fill_super+0x2f80/0x4cdc fs/overlayfs/super.c:1567
 vfs_get_super fs/super.c:1324 [inline]
 get_tree_nodev+0xb4/0x144 fs/super.c:1343
 ovl_get_tree+0x28/0x38 fs/overlayfs/params.c:708
 vfs_get_tree+0x90/0x28c fs/super.c:1751
 fc_mount fs/namespace.c:1199 [inline]
 do_new_mount_fc fs/namespace.c:3636 [inline]
 do_new_mount+0x284/0x944 fs/namespace.c:3712
 path_mount+0x5b4/0xdfc fs/namespace.c:4022
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount fs/namespace.c:4201 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4201
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
F2FS-fs (loop3): inject checkpoint error in f2fs_balance_fs of f2fs_unlink+0x2a0/0xa4c fs/f2fs/namei.c:582
CPU: 0 UID: 0 PID: 10272 Comm: syz.3.510 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
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
 f2fs_handle_critical_error+0x34c/0x4b8 fs/f2fs/super.c:4641
 f2fs_stop_checkpoint+0x5c/0x70 fs/f2fs/checkpoint.c:35
 f2fs_balance_fs+0x278/0x6d8 fs/f2fs/segment.c:430
 f2fs_unlink+0x2a0/0xa4c fs/f2fs/namei.c:582
 vfs_unlink+0x304/0x544 fs/namei.c:5369
 ovl_do_unlink fs/overlayfs/overlayfs.h:218 [inline]
 ovl_cleanup_locked fs/overlayfs/dir.c:36 [inline]
 ovl_cleanup+0x124/0x240 fs/overlayfs/dir.c:54
 ovl_check_rename_whiteout fs/overlayfs/super.c:620 [inline]
 ovl_make_workdir fs/overlayfs/super.c:717 [inline]
 ovl_get_workdir fs/overlayfs/super.c:840 [inline]
 ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
 ovl_fill_super+0x3c5c/0x4cdc fs/overlayfs/super.c:1567
 vfs_get_super fs/super.c:1324 [inline]
 get_tree_nodev+0xb4/0x144 fs/super.c:1343
 ovl_get_tree+0x28/0x38 fs/overlayfs/params.c:708
 vfs_get_tree+0x90/0x28c fs/super.c:1751
 fc_mount fs/namespace.c:1199 [inline]
 do_new_mount_fc fs/namespace.c:3636 [inline]
 do_new_mount+0x284/0x944 fs/namespace.c:3712
 path_mount+0x5b4/0xdfc fs/namespace.c:4022
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount fs/namespace.c:4201 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4201
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
F2FS-fs (loop3): Stopped filesystem due to reason: 1
overlayfs: failed to set xattr on upper
overlayfs: ...falling back to redirect_dir=nofollow.
overlayfs: ...falling back to index=off.
overlayfs: ...falling back to uuid=null.