loop6: detected capacity change from 0 to 512
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7552 at fs/udf/truncate.c:224 udf_truncate_extents+0xd87/0xef0 fs/udf/truncate.c:224
Modules linked in:
CPU: 0 PID: 7552 Comm: syz.6.331 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:udf_truncate_extents+0xd87/0xef0 fs/udf/truncate.c:224
Code: 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 01 00 00 75 73 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a9 67 89 fe <0f> 0b e9 6a ff ff ff 44 89 e9 80 e1 07 38 c1 0f 8c e8 f3 ff ff 4c
RSP: 0018:ffffc9000b62f8e0 EFLAGS: 00010287
RAX: ffffffff82fdad67 RBX: 1ffff1100f0790d5 RCX: 0000000000080000
RDX: ffffc9000cb1a000 RSI: 000000000001683e RDI: 000000000001683f
RBP: ffffc9000b62fac0 R08: ffff888023973c00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000000a R15: 000000000000000a
FS:  00007f6f780826c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000565184630950 CR3: 000000007d038000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 udf_write_failed+0x180/0x1b0 fs/udf/inode.c:178
 udf_write_begin+0x21f/0x420 fs/udf/inode.c:264
 generic_perform_write+0x2fe/0x5c0 mm/filemap.c:4031
 udf_file_write_iter+0x2b5/0x610 fs/udf/file.c:111
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x46c/0x990 fs/read_write.c:584
 ksys_write+0x150/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6f7719c629
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:00007f6f78082028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6f77415fa0 RCX: 00007f6f7719c629
RDX: 0000000000001006 RSI: 0000200000000040 RDI: 0000000000000005
RBP: 00007f6f77232b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f77416038 R14: 00007f6f77415fa0 R15: 00007ffc975c2128
 </TASK>