loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
le32_to_cpu(aed->lengthAllocDescs) != epos->offset - sizeof(struct allocExtDesc)
WARNING: fs/udf/inode.c:2086 at __udf_add_aext+0x52b/0x6e0 fs/udf/inode.c:2085, CPU#0: syz.0.0/5317
Modules linked in:
CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__udf_add_aext+0x52b/0x6e0 fs/udf/inode.c:2085
Code: 81 c4 48 ff ff ff 4c 89 e6 e8 e1 56 fd fe 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7c b0 58 08 cc e8 96 6b 67 fe 90 <0f> 0b 90 e9 0d fc ff ff e8 88 6b 67 fe 90 0f 0b 90 e9 5f fd ff ff
RSP: 0018:ffffc9000f4a7418 EFLAGS: 00010246
RAX: ffffffff835ed5aa RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc9000ec0a000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: 1ffff92001e94ecf R08: ffff888000792540 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000001d0
R13: 00000000000001e0 R14: ffffc9000f4a7670 R15: ffffc9000f4a7678
FS:  00007f42397916c0(0000) GS:ffff88808c821000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000ff000 CR3: 0000000042ece000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x619/0x800 fs/udf/inode.c:2048
 udf_add_aext fs/udf/inode.c:2138 [inline]
 udf_insert_aext fs/udf/inode.c:2325 [inline]
 udf_update_extents fs/udf/inode.c:1210 [inline]
 inode_getblk fs/udf/inode.c:924 [inline]
 udf_map_block+0x335b/0x4280 fs/udf/inode.c:453
 __udf_get_block+0x52/0x250 fs/udf/inode.c:467
 __block_write_begin_int+0x6c2/0x1900 fs/buffer.c:2123
 block_write_begin+0x8d/0x120 fs/buffer.c:2234
 udf_write_begin+0x118/0x270 fs/udf/inode.c:261
 generic_perform_write+0x2d5/0x8f0 mm/filemap.c:4363
 udf_file_write_iter+0x2e8/0x6c0 fs/udf/file.c:112
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f423899ce59
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:00007f4239790fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4238c15fa0 RCX: 00007f423899ce59
RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f4238a32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4238c16038 R14: 00007f4238c15fa0 R15: 00007ffdd93bb838
 </TASK>