------------[ cut here ]------------
WARNING: CPU: 0 PID: 4908 at fs/inode.c:389 inc_nlink+0x128/0x154 fs/inode.c:389
Modules linked in:
CPU: 0 PID: 4908 Comm: syz.2.87 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 : ffff800022987870
x29: ffff800022987870 x28: ffff0000e20ec700 x27: 0000000000000005
x26: fffffc0003d9ecc0 x25: dfff800000000000 x24: ffff800022987a80
x23: 1fffe0001bd68a05 x22: dfff800000000000 x21: 0000000000000001
x20: ffff0000deb44fe0 x19: ffff0000deb45028 x18: 0000000000000000
x17: ffff8000181f9000 x16: ffff8000082e7b10 x15: 0000000000000002
x14: 0000000000006000 x13: 00000000127a3980 x12: 0000000000080000
x11: 0000000000006ac3 x10: ffff800025b0b000 x9 : ffff8000089fc1cc
x8 : 0000000000006ac4 x7 : 00000000127a3980 x6 : 000000000000002d
x5 : ffff0000e20ecf48 x4 : ffff0000e20ecf08 x3 : ffff80000a28cf64
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:4106
 do_mkdirat+0x1b4/0x3e0 fs/namei.c:4131
 __do_sys_mkdirat fs/namei.c:4146 [inline]
 __se_sys_mkdirat fs/namei.c:4144 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144
 __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: 367934
hardirqs last  enabled at (367933): [<ffff8000089269d4>] folio_memcg_lock+0xe8/0x1fc mm/memcontrol.c:2113
hardirqs last disabled at (367934): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (367832): [<ffff80000fcc2cb8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (367832): [<ffff80000fcc2cb8>] release_sock+0x16c/0x1bc net/core/sock.c:3514
softirqs last disabled at (367830): [<ffff80000fcc2b80>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (367830): [<ffff80000fcc2b80>] release_sock+0x34/0x1bc net/core/sock.c:3501
---[ end trace 0000000000000000 ]---