loop0: detected capacity change from 0 to 2048
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: 1 PID: 15308 at fs/udf/inode.c:2081 __udf_add_aext+0x524/0x6d0 fs/udf/inode.c:2080
Modules linked in:
CPU: 1 UID: 0 PID: 15308 Comm: syz.0.2326 Not tainted 6.16.0-rc2-syzkaller-00047-g52da431bf03b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__udf_add_aext+0x524/0x6d0 fs/udf/inode.c:2080
Code: bf ed fe 49 8b 3e 4c 89 e6 e8 58 fe 0f ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 1e 26 da fd cc e8 4d 41 8a fe 90 <0f> 0b 90 e9 14 fc ff ff e8 3f 41 8a fe 90 0f 0b 90 e9 66 fd ff ff
RSP: 0018:ffffc900040e7480 EFLAGS: 00010287
RAX: ffffffff83361af3 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9000c5ba000 RSI: 00000000000765ae RDI: 00000000000765af
RBP: 1ffff9200081cecb R08: ffff888024e95a00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000000c0
R13: 0000000000000400 R14: ffffc900040e7650 R15: ffffc900040e7658
FS:  00007f9522c386c0(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32f8f1e000 CR3: 000000002e140000 CR4: 0000000000350ef0
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+0x336f/0x42a0 fs/udf/inode.c:447
 __udf_get_block+0x52/0x250 fs/udf/inode.c:461
 __block_write_begin_int+0x6b5/0x1900 fs/buffer.c:2151
 block_write_begin+0x8a/0x120 fs/buffer.c:2262
 udf_write_begin+0x100/0x260 fs/udf/inode.c:256
 generic_perform_write+0x2c7/0x910 mm/filemap.c:4112
 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x54b/0xa90 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9521d8e929
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:00007f9522c38038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9521fb5fa0 RCX: 00007f9521d8e929
RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f9521e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9521fb5fa0 R15: 00007ffe8012e9e8
 </TASK>