loop8: detected capacity change from 0 to 128
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
byte_offset
WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd8d/0xf00 fs/udf/truncate.c:224, CPU#0: syz.8.2553/24900
Modules linked in:
CPU: 0 UID: 0 PID: 24900 Comm: syz.8.2553 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:udf_truncate_extents+0xd8d/0xf00 fs/udf/truncate.c:224
Code: 29 e1 0e 48 3b 84 24 80 01 00 00 75 7a 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 44 ed 7e fe 90 <0f> 0b 90 e9 64 ff ff ff 44 89 e9 80 e1 07 38 c1 0f 8c e0 f3 ff ff
RSP: 0018:ffffc9000516f8a0 EFLAGS: 00010283
RAX: ffffffff8344472c RBX: 1ffff1100bd0c2ab RCX: 0000000000080000
RDX: ffffc90012258000 RSI: 00000000000006de RDI: 00000000000006df
RBP: ffffc9000516fa78 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000000a R15: 000000000000000a
FS:  00007fc2cea966c0(0000) GS:ffff8881265c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2cea75d58 CR3: 00000000311a0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 udf_write_failed+0x18b/0x1c0 fs/udf/inode.c:178
 udf_write_begin+0x217/0x270 fs/udf/inode.c:265
 generic_perform_write+0x2af/0x8b0 mm/filemap.c:4314
 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x629/0xba0 fs/read_write.c:686
 ksys_write+0x156/0x270 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc2d083aeb9
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:00007fc2cea96028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc2d0ab5fa0 RCX: 00007fc2d083aeb9
RDX: 000000000000fdef RSI: 0000200000000540 RDI: 0000000000000004
RBP: 00007fc2d08a8c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc2d0ab6038 R14: 00007fc2d0ab5fa0 R15: 00007ffd61823d28
 </TASK>