UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
WARNING: fs/udf/inode.c:2088 at __udf_add_aext+0x524/0x6d0, CPU#1: syz.6.224/7201
Modules linked in:
CPU: 1 UID: 0 PID: 7201 Comm: syz.6.224 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__udf_add_aext+0x524/0x6d0
Code: cf e6 fe 49 8b 3e 4c 89 e6 e8 a8 fd 0a ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 ed ae 80 fe 90 <0f> 0b 90 e9 14 fc ff ff e8 df ae 80 fe 90 0f 0b 90 e9 66 fd ff ff
RSP: 0018:ffffc900076f7300 EFLAGS: 00010283
RAX: ffffffff83404783 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90004c39000 RSI: 000000000007d29d RDI: 000000000007d29e
RBP: 1ffff92000edeee5 R08: ffff8881113f9d40 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000004 R14: ffffc900076f7720 R15: ffffc900076f7728
FS:  00007f137789f6c0(0000) GS:ffff8882a9e21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000bd000 CR3: 000000016a66e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 udf_do_extend_file+0xd3f/0x1180
 udf_map_block+0xff2/0x45f0
 __udf_get_block+0x52/0x250
 __block_write_begin_int+0x6b5/0x1900
 block_write_begin+0x8d/0x120
 udf_write_begin+0x118/0x270
 generic_perform_write+0x2c5/0x900
 udf_file_write_iter+0x2d5/0x6c0
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f137698f7c9
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:00007f137789f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1376be5fa0 RCX: 00007f137698f7c9
RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f13769f297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1376be6038 R14: 00007f1376be5fa0 R15: 00007ffc99353718
 </TASK>
