UDF-fs: error (device loop1): udf_fiiter_advance_blk: extent after position 0 not allocated in directory (ino 1408)
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WARNING: fs/udf/namei.c:214 at udf_expand_dir_adinicb+0xbf6/0xf00 fs/udf/namei.c:214, CPU#0: syz.1.266/7341
Modules linked in:
CPU: 0 UID: 0 PID: 7341 Comm: syz.1.266 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:udf_expand_dir_adinicb+0xbf6/0xf00 fs/udf/namei.c:214
Code: 01 00 00 00 e8 5b 19 fe ff 8b 5c 24 60 e9 aa f6 ff ff e8 0d 79 71 fe 4c 89 ef e8 e5 48 02 ff e9 ac f8 ff ff e8 fb 78 71 fe 90 <0f> 0b 90 e9 88 fe ff ff bb 8b ff ff ff e9 80 f6 ff ff bb f4 ff ff
RSP: 0018:ffffc9000bd87400 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000ffffff8b RCX: ffffffff834d6dde
RDX: ffff88802d600000 RSI: ffffffff834d6f55 RDI: 0000000000000005
RBP: ffffc9000bd87680 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffff8b R11: ffff88802d600b30 R12: 00000000ffffff8b
R13: ffff88807304f1d0 R14: 0000000000000000 R15: ffff888056de2db0
FS:  00007f05c29fe6c0(0000) GS:ffff8881248f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005596c4811048 CR3: 0000000034f1a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_fiiter_add_entry+0xcee/0x10d0 fs/udf/namei.c:262
 udf_rename+0x902/0xd90 fs/udf/namei.c:843
 vfs_rename+0x1021/0x2390 fs/namei.c:5929
 do_renameat2+0x71c/0x9b0 fs/namei.c:6047
 __do_sys_renameat2 fs/namei.c:6077 [inline]
 __se_sys_renameat2 fs/namei.c:6074 [inline]
 __x64_sys_renameat2+0xe7/0x130 fs/namei.c:6074
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f05c378e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05c29fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f05c39b5fa0 RCX: 00007f05c378e969
RDX: 0000000000000004 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007f05c3810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000980 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f05c39b5fa0 R15: 00007ffc910bd758
 </TASK>