UDF-fs: error (device loop0): 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 fs/udf/namei.c:214 [inline], CPU#0: syz.0.80/6178
WARNING: fs/udf/namei.c:214 at udf_fiiter_add_entry+0x1a2c/0x2000 fs/udf/namei.c:262, CPU#0: syz.0.80/6178
Modules linked in:
CPU: 0 UID: 0 PID: 6178 Comm: syz.0.80 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:udf_expand_dir_adinicb fs/udf/namei.c:214 [inline]
RIP: 0010:udf_fiiter_add_entry+0x1a2c/0x2000 fs/udf/namei.c:262
Code: 41 d3 ed 45 01 f5 44 89 6c 24 40 e9 f5 fb ff ff e8 69 75 5e fe 49 be f8 f8 f8 f8 f8 f8 f8 f8 e9 ae fe ff ff e8 55 75 5e fe 90 <0f> 0b 90 e9 f6 f8 ff ff 89 d1 80 e1 07 38 c1 0f 8c d0 e6 ff ff 48
RSP: 0018:ffffc90006dd77c0 EFLAGS: 00010287
RAX: ffffffff83699b1b RBX: fffff52000dbaf1c RCX: 0000000000080000
RDX: ffffc90010a87000 RSI: 00000000000031dc RDI: 00000000000031dd
RBP: ffffc90006dd7bd0 R08: ffff8880761b5e5b R09: 1ffff1100ec36bcb
R10: dffffc0000000000 R11: ffffed100ec36bcc R12: dffffc0000000000
R13: ffffc90006dd7c20 R14: ffff888076282868 R15: 00000000ffffff8b
FS:  00007fa3c15bd6c0(0000) GS:ffff888123abf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33812ff8 CR3: 000000002de13000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_link+0xff/0x360 fs/udf/namei.c:738
 vfs_link+0x491/0x650 fs/namei.c:5954
 filename_linkat+0x26d/0x5e0 fs/namei.c:6022
 __do_sys_link fs/namei.c:6055 [inline]
 __se_sys_link+0x55/0x2c0 fs/namei.c:6051
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3c079e2d9
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:00007fa3c15bd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007fa3c0a26090 RCX: 00007fa3c079e2d9
RDX: 0000000000000000 RSI: 0000200000002280 RDI: 0000200000002240
RBP: 00007fa3c0835888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa3c0a26128 R14: 00007fa3c0a26090 R15: 00007ffce3622518
 </TASK>