------------[ cut here ]------------
WARNING: CPU: 1 PID: 9847 at fs/inode.c:389 inc_nlink+0x14d/0x170 fs/inode.c:389
Modules linked in:
CPU: 1 PID: 9847 Comm: syz-executor.3 Not tainted 6.9.0-rc5-syzkaller-00053-ge33c4963bf53 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:inc_nlink+0x14d/0x170 fs/inode.c:389
Code: 4c 89 e7 e8 e5 46 e8 ff e9 3e ff ff ff 4c 89 e7 e8 e8 45 e8 ff e9 f8 fe ff ff 4c 89 e7 e8 db 45 e8 ff eb d4 e8 24 1d 8d ff 90 <0f> 0b 90 e9 6c ff ff ff e8 f6 45 e8 ff e9 42 ff ff ff e8 ec 45 e8
RSP: 0018:ffffc9000352fdc0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888047890580 RCX: ffffc900055ea000
RDX: 0000000000040000 RSI: ffffffff8200a52c RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffff8880478905c8
R13: ffffffff8b3b9a80 R14: ffff8880478905a8 R15: ffff8880478905a0
FS:  00007f71e03ce6c0(0000) GS:ffff88806b300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0da1bad988 CR3: 0000000046a18000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2435 [inline]
 sysv_mkdir+0x22/0x150 fs/sysv/namei.c:119
 vfs_mkdir+0x57d/0x820 fs/namei.c:4123
 do_mkdirat+0x301/0x3a0 fs/namei.c:4146
 __do_sys_mkdirat fs/namei.c:4161 [inline]
 __se_sys_mkdirat fs/namei.c:4159 [inline]
 __x64_sys_mkdirat+0x114/0x170 fs/namei.c:4159
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f71df67c9a7
Code: 73 01 c3 48 c7 c1 b0 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f71e03cdef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f71e03cdf80 RCX: 00007f71df67c9a7
RDX: 00000000000001ff RSI: 0000000020000040 RDI: 00000000ffffff9c
RBP: 0000000020000000 R08: 0000000020000180 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000020000040
R13: 00007f71e03cdf40 R14: 0000000000000000 R15: 0000000000000000
 </TASK>