------------[ cut here ]------------
WARNING: CPU: 0 PID: 7993 at fs/inode.c:389 inc_nlink+0x11d/0x130 fs/inode.c:389
Modules linked in:
CPU: 0 PID: 7993 Comm: syz.2.930 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:inc_nlink+0x11d/0x130 fs/inode.c:389
Code: 78 eb ff e9 3a ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c ff ff ff 48 89 df e8 0d 78 eb ff e9 3f ff ff ff e8 13 02 9a ff <0f> 0b eb 82 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 57 41
RSP: 0018:ffffc90003407c08 EFLAGS: 00010287
RAX: ffffffff81e6d4fd RBX: ffff8880715a0620 RCX: 0000000000080000
RDX: ffffc9000ead2000 RSI: 000000000000e370 RDI: 000000000000e371
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100938c012
R10: ffffed100938c012 R11: 1ffff1100938c011 R12: dffffc0000000000
R13: 1ffff1100e2b40c4 R14: ffff8880715a05d8 R15: 0000000000000000
FS:  00007fe047b146c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c61fffc CR3: 0000000057a97000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 000000000000356a DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 v9fs_vfs_mkdir_dotl+0x625/0x770 fs/9p/vfs_inode_dotl.c:445
 vfs_mkdir+0x387/0x570 fs/namei.c:4106
 do_mkdirat+0x1d0/0x430 fs/namei.c:4131
 __do_sys_mkdirat fs/namei.c:4146 [inline]
 __se_sys_mkdirat fs/namei.c:4144 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4144
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe046d8e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe047b14038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fe046fb6080 RCX: 00007fe046d8e969
RDX: 0000000000000003 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007fe046e10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe046fb6080 R15: 00007ffdf12c5ae8
 </TASK>