loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000)
UDF-fs: warning (device loop0): udf_truncate_tail_extent: Too long extent after EOF in inode 1346: i_size: 0 lbcount: 4096 extent 6+4096
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5321 at fs/udf/inode.c:2084 __udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2083
Modules linked in:
CPU: 0 UID: 0 PID: 5321 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~bpo12+1 04/01/2014
RIP: 0010:__udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2083
Code: 5f 5d e9 43 bd 12 08 cc e8 6d 3c 82 fe 90 0f 0b 90 e9 14 fc ff ff e8 5f 3c 82 fe 90 0f 0b 90 e9 66 fd ff ff e8 51 3c 82 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:ffffc9000d3dee40 EFLAGS: 00010287
RAX: ffffffff833d677f RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc9000dc42000 RSI: 0000000000002b55 RDI: 0000000000002b56
RBP: 0000000000000010 R08: ffff888000ccc900 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000000b0
R13: 0000000000000000 R14: ffffc9000d3df260 R15: 0000000000000000
FS:  00007f91b8e846c0(0000) GS:ffff88808d306000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91b8e82bc0 CR3: 000000003efb9000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2145 [inline]
 udf_do_extend_file+0x576/0x1180 fs/udf/inode.c:551
 inode_getblk fs/udf/inode.c:843 [inline]
 udf_map_block+0xff2/0x45f0 fs/udf/inode.c:454
 __udf_get_block+0x52/0x250 fs/udf/inode.c:468
 __block_write_begin_int+0x6b2/0x1900 fs/buffer.c:2145
 block_write_begin+0x8a/0x120 fs/buffer.c:2256
 udf_write_begin+0x115/0x270 fs/udf/inode.c:262
 generic_perform_write+0x2c2/0x900 mm/filemap.c:4242
 __generic_file_write_iter+0x1ae/0x230 mm/filemap.c:4356
 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111
 iter_file_splice_write+0x972/0x10e0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0xfe/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x5a8/0xcc0 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1230
 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f91b7f8eec9
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:00007f91b8e84038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f91b81e5fa0 RCX: 00007f91b7f8eec9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f91b8011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f91b81e6038 R14: 00007f91b81e5fa0 R15: 00007fffc37c73e8
 </TASK>