------------[ cut here ]------------
WARNING: CPU: 1 PID: 18916 at fs/inode.c:388 inc_nlink+0x11e/0x130
Modules linked in:
CPU: 1 PID: 18916 Comm: syz-executor.4 Not tainted 6.0.0-rc2-syzkaller-00248-ge022620b5d05 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:inc_nlink+0x11e/0x130 fs/inode.c:388
Code: ea ff e9 38 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 49 ff ff ff 4c 89 ef e8 ec 40 ea ff e9 3c ff ff ff e8 72 94 96 ff <0f> 0b eb 80 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57 41 56
RSP: 0018:ffffc90004c2fbe8 EFLAGS: 00010283
RAX: ffffffff81f3040e RBX: 1ffff1101003e009 RCX: 0000000000040000
RDX: ffffc90005d69000 RSI: 000000000001aa66 RDI: 000000000001aa67
RBP: 0000000000000000 R08: ffffffff81f30388 R09: ffffed100e790012
R10: ffffed100e790012 R11: 1ffff1100e790011 R12: dffffc0000000000
R13: ffff8880801f0048 R14: ffff8880801f0000 R15: 0000000000000000
FS:  00007f3025bb7700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35a1974000 CR3: 000000007c419000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 v9fs_vfs_mkdir_dotl+0x856/0xa30 fs/9p/vfs_inode_dotl.c:444
 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013
 do_mkdirat+0x289/0x560 fs/namei.c:4038
 __do_sys_mkdir fs/namei.c:4058 [inline]
 __se_sys_mkdir fs/namei.c:4056 [inline]
 __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4056
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3024a89279
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3025bb7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f3024b9bf80 RCX: 00007f3024a89279
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007f3024ae3189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff4b5ab8df R14: 00007f3025bb7300 R15: 0000000000022000
 </TASK>