loop2: detected capacity change from 0 to 16
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3690 at fs/inode.c:364 inc_nlink+0x120/0x130
Modules linked in:
CPU: 1 PID: 3690 Comm: syz.2.16 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:inc_nlink+0x120/0x130 fs/inode.c:364
Code: ed ff e9 37 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 49 ff ff ff 4c 89 ef e8 ca 9e ed ff e9 3c ff ff ff e8 b0 d4 a3 ff <0f> 0b eb 80 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48
RSP: 0018:ffffc9000116fc08 EFLAGS: 00010287
RAX: ffffffff81dc85c0 RBX: 1ffff1100bfa6032 RCX: 0000000000040000
RDX: ffffc90003a4d000 RSI: 000000000000c5f9 RDI: 000000000000c5fa
RBP: 0000000000000000 R08: ffffffff81dc853a R09: ffffed100bfe003b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88805fd30190 R14: ffff88805fd30148 R15: 0000000000000007
FS:  00007fd2a028b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ac4d04000 CR3: 000000005e108000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 v9fs_vfs_mkdir_dotl+0x6c9/0x870 fs/9p/vfs_inode_dotl.c:458
 vfs_mkdir+0x3b6/0x590 fs/namei.c:4065
 do_mkdirat+0x260/0x520 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd2a1e11897
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007fd2a028ae68 EFLAGS: 00000202 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fd2a028aef0 RCX: 00007fd2a1e11897
RDX: 00000000000001ff RSI: 00000000200001c0 RDI: 00000000ffffff9c
RBP: 0000000020000180 R08: 0000000000000000 R09: 0000000000000177
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200001c0
R13: 00007fd2a028aeb0 R14: 000000000000017d R15: 0000000020000040
 </TASK>