loop0: detected capacity change from 0 to 256
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
UDF-fs: warning (device loop0): udf_truncate_tail_extent: Too long extent after EOF in inode 65: i_size: 0 lbcount: 4096 extent 22+4096
------------[ cut here ]------------
iinfo->i_lenAlloc != epos->offset - udf_file_entry_alloc_offset(inode)
WARNING: fs/udf/inode.c:2084 at __udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2083, CPU#0: syz.0.0/5331
Modules linked in:
CPU: 0 UID: 0 PID: 5331 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+0x540/0x6d0 fs/udf/inode.c:2083
Code: 5f 5d e9 d3 0e 5e 08 cc e8 cd 56 70 fe 90 0f 0b 90 e9 14 fc ff ff e8 bf 56 70 fe 90 0f 0b 90 e9 66 fd ff ff e8 b1 56 70 fe 90 <0f> 0b 90 e9 50 fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c f7
RSP: 0018:ffffc9000df3ec80 EFLAGS: 00010287
RAX: ffffffff835559ef RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc9000ece2000 RSI: 0000000000000da2 RDI: 0000000000000da3
RBP: 0000000000000010 R08: ffff888000110000 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000000b0
R13: 0000000000000000 R14: ffffc9000df3f0a0 R15: 0000000000000000
FS:  00007f78b69ba6c0(0000) GS:ffff88808ca52000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000037c0 CR3: 0000000041666000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2145 [inline]
 udf_do_extend_file+0x5a8/0x11e0 fs/udf/inode.c:551
 inode_getblk fs/udf/inode.c:843 [inline]
 udf_map_block+0xfff/0x4330 fs/udf/inode.c:454
 __udf_get_block+0x52/0x250 fs/udf/inode.c:468
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x15d7/0x32f0 fs/direct-io.c:1243
 blockdev_direct_IO include/linux/fs.h:3114 [inline]
 udf_direct_IO+0x139/0x200 fs/udf/inode.c:312
 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4253
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4422
 udf_file_write_iter+0x2ca/0x6b0 fs/udf/file.c:112
 iter_file_splice_write+0x9a1/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x535/0x7d0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78b5b9c799
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:00007f78b69b9fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f78b5e15fa0 RCX: 00007f78b5b9c799
RDX: 0000000000000000 RSI: 000000000000000b RDI: 000000000000000a
RBP: 00007f78b5c32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f78b5e16038 R14: 00007f78b5e15fa0 R15: 00007ffe6fac5378
 </TASK>