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.0.0/5320
Modules linked in:
CPU: 0 UID: 0 PID: 5320 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 c3 cc cc cc cc cc e8 ad 94 71 fe 90 0f 0b 90 e9 14 fc ff ff e8 9f 94 71 fe 90 0f 0b 90 e9 66 fd ff ff e8 91 94 71 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:ffffc9000f4bee40 EFLAGS: 00010283
RAX: ffffffff8354030f RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc9000ec22000 RSI: 0000000000003072 RDI: 0000000000003073
RBP: 0000000000000010 R08: ffff888000fb0000 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000000b0
R13: 0000000000000000 R14: ffffc9000f4bf260 R15: 0000000000000000
FS:  00007f5c87ccd6c0(0000) GS:ffff88808ca62000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001680 CR3: 0000000035fb0000 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
 __block_write_begin_int+0x6c6/0x1910 fs/buffer.c:2143
 block_write_begin+0x8d/0x120 fs/buffer.c:2254
 udf_write_begin+0x118/0x270 fs/udf/inode.c:262
 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314
 __generic_file_write_iter+0x1ae/0x230 mm/filemap.c:4428
 udf_file_write_iter+0x2ca/0x6b0 fs/udf/file.c:112
 iter_file_splice_write+0x99b/0x1100 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1230
 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: 0033:0x7f5c86d9bf79
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:00007f5c87ccd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5c87015fa0 RCX: 00007f5c86d9bf79
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f5c86e327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe80 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5c87016038 R14: 00007f5c87015fa0 R15: 00007ffca708ac48
 </TASK>