UDF-fs: error (device loop4): udf_fiiter_advance_blk: extent after position 0 not allocated in directory (ino 1408)
------------[ cut here ]------------
ret
WARNING: fs/udf/namei.c:214 at udf_expand_dir_adinicb+0xc87/0xed0 fs/udf/namei.c:214, CPU#0: syz.4.2311/11500
Modules linked in:
CPU: 0 UID: 0 PID: 11500 Comm: syz.4.2311 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:udf_expand_dir_adinicb+0xc87/0xed0 fs/udf/namei.c:214
Code: 07 da fe 48 8b 4c 24 38 48 8b 54 24 28 e9 58 fa ff ff e8 1c 79 6e fe 4c 89 ff e8 b4 d2 02 ff e9 1b f8 ff ff e8 0a 79 6e fe 90 <0f> 0b 90 e9 e7 fd ff ff bb 8b ff ff ff e9 f4 f5 ff ff bb f4 ff ff
RSP: 0018:ffffc900038f7410 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000ffffff8b RCX: ffffffff839a303e
RDX: ffff888028791e80 RSI: ffffffff839a3256 RDI: ffff888028791e80
RBP: ffffc900038f7688 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffff8b R11: 0000000000000000 R12: 00000000ffffff8b
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888050754658
FS:  00007f7cc63fb6c0(0000) GS:ffff888124343000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f058793d000 CR3: 0000000020346000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_fiiter_add_entry+0xcb1/0x10c0 fs/udf/namei.c:262
 udf_rename+0x962/0xdc0 fs/udf/namei.c:843
 vfs_rename+0xcce/0x1fc0 fs/namei.c:6026
 filename_renameat2+0x754/0xa60 fs/namei.c:6144
 __do_sys_renameat2 fs/namei.c:6173 [inline]
 __se_sys_renameat2 fs/namei.c:6168 [inline]
 __x64_sys_renameat2+0xef/0x140 fs/namei.c:6168
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cc55990b9
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:00007f7cc63fb028 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f7cc57c5fa0 RCX: 00007f7cc55990b9
RDX: 0000000000000004 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007f7cc562b9c4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000980 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7cc57c5fa0 R15: 00007fffee364898
 </TASK>