------------[ cut here ]------------
WARNING: CPU: 1 PID: 6951 at fs/inode.c:389 inc_nlink+0x128/0x154 fs/inode.c:389
Modules linked in:
CPU: 1 PID: 6951 Comm: syz.3.554 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : inc_nlink+0x128/0x154 fs/inode.c:389
lr : inc_nlink+0x128/0x154 fs/inode.c:389
sp : ffff800021547870
x29: ffff800021547870 x28: ffff0000e2729aa0 x27: 0000000000000004
x26: fffffc0004162900 x25: dfff800000000000 x24: ffff800021547a80
x23: 1fffe0001c4dee75 x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000e26f7360 x19: ffff0000e26f73a8 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082e7de8 x15: 0000000000000002
x14: 0000000000006000 x13: 000000001c1dcdfc x12: 0000000000080000
x11: 0000000000008437 x10: ffff800029e3f000 x9 : ffff8000089fcc64
x8 : 0000000000008438 x7 : 000000001c1dcdfc x6 : 0000000000000077
x5 : ffff0000e272a2e8 x4 : ffff0000e272a2a8 x3 : ffff80000a28de8c
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 inc_nlink+0x128/0x154 fs/inode.c:389
 f2fs_i_links_write fs/f2fs/f2fs.h:3047 [inline]
 f2fs_update_parent_metadata+0xa8/0x2a4 fs/f2fs/dir.c:666
 f2fs_add_inline_entry+0x488/0x628 fs/f2fs/inline.c:675
 f2fs_add_dentry fs/f2fs/dir.c:843 [inline]
 f2fs_do_add_link+0x250/0x4d4 fs/f2fs/dir.c:886
 f2fs_add_link fs/f2fs/f2fs.h:3537 [inline]
 f2fs_mkdir+0x28c/0x4d4 fs/f2fs/namei.c:711
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4114
 do_mkdirat+0x1b4/0x3e0 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+0x98/0x2bc 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+0x58/0x138 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: 314996
hardirqs last  enabled at (314995): [<ffff8000089271dc>] folio_memcg_lock+0xe8/0x1fc mm/memcontrol.c:2113
hardirqs last disabled at (314996): [<ffff80001195cc30>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (314896): [<ffff8000080309e0>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (314894): [<ffff8000080309ac>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---