UDF-fs: warning (device loop0): 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: CPU: 0 PID: 7508 at fs/udf/inode.c:2081 __udf_add_aext+0x555/0x700 fs/udf/inode.c:2080
Modules linked in:
CPU: 0 UID: 0 PID: 7508 Comm: syz.0.475 Not tainted 6.15.0-rc2-syzkaller-00471-g119009db2674 #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+0x555/0x700 fs/udf/inode.c:2080
Code: 17 d7 fe 49 8b 3c 24 4c 89 fe e8 a6 d4 fb fe 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 1c d8 6c fe 90 <0f> 0b 90 e9 e7 fb ff ff e8 0e d8 6c fe 90 0f 0b 90 e9 54 fc ff ff
RSP: 0018:ffffc9000e00f238 EFLAGS: 00010293
RAX: ffffffff8355e504 RBX: 1ffff92001c01e93 RCX: ffff888033d1c880
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8355e0e6 R09: ffffffff8355e016
R10: 0000000000000002 R11: ffff888033d1c880 R12: ffffc9000e00f490
R13: 0000000000000004 R14: dffffc0000000000 R15: ffffc9000e00f498
FS:  00007f3edae376c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3eda0a42c0 CR3: 000000004e242000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2138 [inline]
 udf_insert_aext fs/udf/inode.c:2317 [inline]
 udf_update_extents fs/udf/inode.c:1205 [inline]
 inode_getblk fs/udf/inode.c:919 [inline]
 udf_map_block+0x402c/0x55c0 fs/udf/inode.c:447
 __udf_get_block+0x128/0x410 fs/udf/inode.c:461
 __block_write_begin_int+0x691/0x1930 fs/buffer.c:2116
 block_write_begin+0x8f/0x120 fs/buffer.c:2227
 udf_write_begin+0xfc/0x250 fs/udf/inode.c:256
 generic_perform_write+0x329/0xa10 mm/filemap.c:4103
 udf_file_write_iter+0x2e7/0x6c0 fs/udf/file.c:111
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x70f/0xd10 fs/read_write.c:684
 ksys_write+0x19d/0x2d0 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3ed9f8e169
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:00007f3edae37038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3eda1b5fa0 RCX: 00007f3ed9f8e169
RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f3eda010a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3eda1b5fa0 R15: 00007ffceec53928
 </TASK>