F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4560 at fs/inode.c:332 drop_nlink+0xe4/0x138 fs/inode.c:332
Modules linked in:
CPU: 0 PID: 4560 Comm: syz.0.32 Not tainted 6.1.134-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : drop_nlink+0xe4/0x138 fs/inode.c:332
lr : drop_nlink+0xe4/0x138 fs/inode.c:332
sp : ffff800021d77920
x29: ffff800021d77920 x28: dfff800000000000 x27: dfff800000000000
x26: ffff0000f2c24000 x25: 1fffe0001c2d76a8 x24: ffff0000e16bb5b8
x23: 1fffe0001c2d76b1 x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000e16bb588 x19: ffff0000e16bb540 x18: ffff800021d77560
x17: ffff800018c59000 x16: ffff800008302888 x15: ffff800018739f80
x14: ffff0000c9fc8a78 x13: dfff800000000000 x12: 0000000000080000
x11: 0000000000005cfd x10: ffff8000222e9000 x9 : ffff800008aace74
x8 : 0000000000005cfe x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 drop_nlink+0xe4/0x138 fs/inode.c:332
 f2fs_i_links_write fs/f2fs/f2fs.h:3044 [inline]
 f2fs_drop_nlink+0x110/0x34c fs/f2fs/dir.c:922
 f2fs_delete_entry+0xae4/0xefc fs/f2fs/dir.c:989
 f2fs_unlink+0x4b8/0xbdc fs/f2fs/namei.c:562
 vfs_unlink+0x2f0/0x508 fs/namei.c:4322
 do_unlinkat+0x4cc/0x70c fs/namei.c:4390
 __do_sys_unlinkat fs/namei.c:4433 [inline]
 __se_sys_unlinkat fs/namei.c:4426 [inline]
 __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426
 __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
irq event stamp: 277398
hardirqs last  enabled at (277397): [<ffff8000084041d8>] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
hardirqs last  enabled at (277397): [<ffff8000084041d8>] ktime_get_coarse_real_ts64+0x114/0x244 kernel/time/timekeeping.c:2261
hardirqs last disabled at (277398): [<ffff80001232684c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (277362): [<ffff800008030168>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (277360): [<ffff800008030134>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---