loop7: detected capacity change from 0 to 128
UDF-fs: error (device loop7): 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+0x981/0xa70 fs/udf/truncate.c:224, CPU#1: syz.7.1576/13101
Modules linked in:
CPU: 1 UID: 0 PID: 13101 Comm: syz.7.1576 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:udf_truncate_extents+0x981/0xa70 fs/udf/truncate.c:224
Code: fe e9 50 f8 ff ff 48 8b 7c 24 18 e8 19 08 dd fe e9 0d f9 ff ff 48 8b 7c 24 18 e8 0a 08 dd fe e9 ad f7 ff ff e8 b0 ac 73 fe 90 <0f> 0b 90 e9 a9 f9 ff ff e8 a2 ac 73 fe 90 0f 0b 48 8b 7c 24 10 48
RSP: 0018:ffffc9000b0b7978 EFLAGS: 00010283
RAX: 0000000000000e5d RBX: ffff888053d933d8 RCX: ffffc9001e163000
RDX: 0000000000080000 RSI: ffffffff83932d90 RDI: ffff88802e973d00
RBP: ffffc9000b0b7a70 R08: 0000000000000007 R09: 0000000000000000
R10: 000000000000000a R11: 0000000000000000 R12: ffff88807ed7c000
R13: 0000000000000000 R14: 000000000000000a R15: ffffc9000b0b7a30
FS:  00007fb8974006c0(0000) GS:ffff8881246dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c32f01c CR3: 000000008f6e8000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_write_failed.isra.0+0x175/0x1d0 fs/udf/inode.c:178
 udf_write_begin+0x255/0x300 fs/udf/inode.c:265
 generic_perform_write+0x292/0xa40 mm/filemap.c:4314
 __generic_file_write_iter+0x1f7/0x240 mm/filemap.c:4431
 udf_file_write_iter+0x231/0x780 fs/udf/file.c:111
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x6ac/0x1070 fs/read_write.c:686
 ksys_write+0x12a/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb89659aeb9
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:00007fb897400028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb896815fa0 RCX: 00007fb89659aeb9
RDX: 00000000fffffdab RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007fb896608c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb896816038 R14: 00007fb896815fa0 R15: 00007ffe85542b08
 </TASK>