------------[ cut here ]------------
WARNING: CPU: 1 PID: 4533 at fs/inode.c:364 inc_nlink+0x130/0x168 fs/inode.c:364
Modules linked in:

CPU: 1 PID: 4533 Comm: syz.2.115 Not tainted 5.15.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : inc_nlink+0x130/0x168 fs/inode.c:364
lr : inc_nlink+0x130/0x168 fs/inode.c:364
sp : ffff80001d1879e0
x29: ffff80001d1879e0
 x28: 1ffff00003a30f62
 x27: 1ffff00003a30f5e

x26: 0000000000000000
 x25: ffff0000d7f9f100 x24: ffff0000dfe887a0

x23: 1fffe0001bfd1032 x22: dfff800000000000
 x21: 0000000000000007

x20: ffff0000dfe88148
 x19: ffff0000dfe88190
 x18: ffff80001d187680

x17: 0000000000000002
 x16: ffff80000824e1f4
 x15: 0000000000025d57

x14: ffff800017141500
 x13: dfff800000000000
 x12: 0000000000040000

x11: 000000000002d5b0
 x10: ffff80001e129000
 x9 : 000000000002d5b1

x8 : ffff8000089e9f88
 x7 : 0000000000000000
 x6 : 0000000000000000

x5 : 0000000000000020
 x4 : 0000000000000000
 x3 : ffff800008304f3c

x2 : 0000000000000001
 x1 : 0000000000000000
 x0 : 0000000000000000

Call trace:
 inc_nlink+0x130/0x168 fs/inode.c:364
 v9fs_vfs_mkdir_dotl+0x538/0x6a0 fs/9p/vfs_inode_dotl.c:458
 vfs_mkdir+0x334/0x4e4 fs/namei.c:4065
 do_mkdirat+0x20c/0x610 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 110020
hardirqs last  enabled at (110019): [<ffff8000083c6380>] seqcount_lockdep_reader_access+0x208/0x2cc include/linux/seqlock.h:105
hardirqs last disabled at (110020): [<ffff800011ab40b4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (108974): [<ffff8000080308b0>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (108972): [<ffff80000803087c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace d919a3cb370dbd7e ]---