syzbot

UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000)
UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5830 at fs/inode.c:336 drop_nlink+0xc4/0x110 fs/inode.c:336
Modules linked in:
CPU: 1 UID: 0 PID: 5830 Comm: syz-executor175 Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:336
Code: bb 70 07 00 00 be 08 00 00 00 e8 87 0b e6 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ad 61 7f ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
RSP: 0018:ffffc900039cfad0 EFLAGS: 00010293
RAX: ffffffff82157803 RBX: 1ffff1100fcf3100 RCX: ffff888035123c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff82157783 R09: 1ffff92000739ed8
R10: dffffc0000000000 R11: fffff52000739ed9 R12: ffff88807e798800
R13: ffffc900039cfb80 R14: ffff88807e7987b8 R15: dffffc0000000000
FS:  000055557128d380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faacd595ed8 CR3: 0000000012376000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_dec_link_count include/linux/fs.h:2510 [inline]
 udf_rmdir+0x3bc/0x730 fs/udf/namei.c:520
 vfs_rmdir+0x3a3/0x510 fs/namei.c:4340
 do_rmdir+0x3b5/0x580 fs/namei.c:4399
 __do_sys_rmdir fs/namei.c:4418 [inline]
 __se_sys_rmdir fs/namei.c:4416 [inline]
 __x64_sys_rmdir+0x47/0x50 fs/namei.c:4416
 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: 0033:0x7fc98d0ebd99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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:00007ffd4fd5f668 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 000000000000001d RCX: 00007fc98d0ebd99
RDX: 00007fc98d0ebd99 RSI: 00007fc98d0ebd99 RDI: 0000000020000000
RBP: 00007fc98d1605f0 R08: 000055557128e4c0 R09: 000055557128e4c0
R10: 000055557128e4c0 R11: 0000000000000246 R12: 00007ffd4fd5f690
R13: 00007ffd4fd5f8b8 R14: 431bde82d7b634db R15: 00007fc98d13503b
 </TASK>