loop4: detected capacity change from 0 to 128
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8400 at fs/inode.c:389 inc_nlink+0x121/0x130 fs/inode.c:389
Modules linked in:
CPU: 1 PID: 8400 Comm: syz.4.755 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:inc_nlink+0x121/0x130 fs/inode.c:389
Code: 07 ea 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 79 07 ea ff e9 3f ff ff ff e8 1f 93 91 ff <0f> 0b eb 82 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 41 57 41
RSP: 0018:ffffc90004eb7d80 EFLAGS: 00010283
RAX: ffffffff81f55231 RBX: ffff88805de50090 RCX: 0000000000080000
RDX: ffffc9000ba29000 RSI: 000000000000ba3a RDI: 000000000000ba3b
RBP: 0000000000000000 R08: ffff888017c73903 R09: 1ffff11002f8e720
R10: dffffc0000000000 R11: ffffed1002f8e721 R12: dffffc0000000000
R13: 1ffff1100bbca012 R14: ffff88805de50038 R15: 0000000000000000
FS:  00007f4e6fd816c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d711ff8 CR3: 0000000021e42000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2334 [inline]
 sysv_mkdir+0x21/0x120 fs/sysv/namei.c:119
 vfs_mkdir+0x2a5/0x470 fs/namei.c:4121
 do_mkdirat+0x1dc/0x450 fs/namei.c:4144
 __do_sys_mkdirat fs/namei.c:4159 [inline]
 __se_sys_mkdirat fs/namei.c:4157 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4e6ef9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4e6fd81028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f4e6f215fa0 RCX: 00007f4e6ef9ce59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007f4e6f032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4e6f216038 R14: 00007f4e6f215fa0 R15: 00007ffcbe941428
 </TASK>