F2FS-fs (loop9): invalid crc value
F2FS-fs (loop9): Found nat_bits in checkpoint
F2FS-fs (loop9): Try to recover 1th superblock, ret: 0
F2FS-fs (loop9): Mounted with checkpoint version = 48b305e4
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8134 Comm: syz.9.688 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c 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:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 __init_nat_entry fs/f2fs/node.c:196 [inline]
 cache_nat_entry fs/f2fs/node.c:443 [inline]
 f2fs_get_node_info+0x7ec/0xd60 fs/f2fs/node.c:616
 f2fs_new_node_page+0x190/0x8e4 fs/f2fs/node.c:1320
 f2fs_get_dnode_of_data+0x698/0x1b9c fs/f2fs/node.c:818
 f2fs_reserve_block fs/f2fs/data.c:1190 [inline]
 f2fs_get_new_data_page+0x10c/0x5b0 fs/f2fs/data.c:1374
 f2fs_add_regular_entry+0x4c8/0xaa4 fs/f2fs/dir.c:778
 f2fs_add_dentry fs/f2fs/dir.c:847 [inline]
 f2fs_do_add_link+0x2a0/0x4f0 fs/f2fs/dir.c:886
 f2fs_add_link fs/f2fs/f2fs.h:3542 [inline]
 f2fs_mkdir+0x28c/0x4cc fs/f2fs/namei.c:711
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4114
 do_mkdirat+0x1b8/0x3ec fs/namei.c:4139
 __do_sys_mkdirat fs/namei.c:4154 [inline]
 __se_sys_mkdirat fs/namei.c:4152 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4152
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 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