------------[ cut here ]------------
WARNING: CPU: 1 PID: 7449 at fs/inode.c:393 inc_nlink+0x127/0x150 fs/inode.c:393
Modules linked in:
CPU: 1 UID: 0 PID: 7449 Comm: syz.7.236 Not tainted 6.12.0-rc6-syzkaller-00099-g7758b206117d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:inc_nlink+0x127/0x150 fs/inode.c:393
Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 54 0d e6 ff e9 3a ff ff ff e8 0a 6b 7f ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49
RSP: 0018:ffffc90004bb7d30 EFLAGS: 00010246
RAX: ffffffff82156ef6 RBX: 1ffff1100b159010 RCX: 0000000000040000
RDX: ffffc9001f201000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff82156e70 R09: 0000000000000000
R10: ffffc90004bb7ca8 R11: ffffffff82c48a20 R12: dffffc0000000000
R13: ffff888058ac8080 R14: ffff888058ac8038 R15: 0000000000000000
FS:  00007f6c609ec6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f656374d440 CR3: 000000005045c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2504 [inline]
 sysv_mkdir+0x21/0x130 fs/sysv/namei.c:119
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
 do_mkdirat+0x264/0x3a0 fs/namei.c:4280
 __do_sys_mkdirat fs/namei.c:4295 [inline]
 __se_sys_mkdirat fs/namei.c:4293 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c5fb7e719
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:00007f6c609ec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f6c5fd35f80 RCX: 00007f6c5fb7e719
RDX: 0000000000000000 RSI: 0000000020002040 RDI: ffffffffffffff9c
RBP: 00007f6c5fbf139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6c5fd35f80 R15: 00007ffdd7508618
 </TASK>