loop2: detected capacity change from 0 to 512
UDF-fs: error (device loop2): udf_read_tagged: read failed, block=256, location=256
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6643 at fs/udf/truncate.c:224 udf_truncate_extents+0x985/0xa80 fs/udf/truncate.c:224
Modules linked in:
CPU: 0 UID: 0 PID: 6643 Comm: syz.2.194 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:udf_truncate_extents+0x985/0xa80 fs/udf/truncate.c:224
Code: fe e9 4c f8 ff ff 48 8b 7c 24 18 e8 05 7d dc fe e9 09 f9 ff ff 48 8b 7c 24 18 e8 f6 7c dc fe e9 a9 f7 ff ff e8 8c cd 74 fe 90 <0f> 0b 90 e9 a5 f9 ff ff e8 7e cd 74 fe 90 0f 0b 48 8b 7c 24 10 48
RSP: 0018:ffffc90002ee7978 EFLAGS: 00010283
RAX: 0000000000001657 RBX: ffff888058fa0df8 RCX: ffffc9000c7ac000
RDX: 0000000000080000 RSI: ffffffff83481a04 RDI: 0000000000000007
RBP: ffffc90002ee7a70 R08: 0000000000000007 R09: 0000000000000000
R10: 000000000000000a R11: 0000000000000001 R12: ffff88805092e000
R13: 0000000000000000 R14: 000000000000000a R15: ffffc90002ee7a30
FS:  00007fcbdc3b46c0(0000) GS:ffff888124a06000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c442624 CR3: 0000000056381000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_write_failed.isra.0+0x170/0x1c0 fs/udf/inode.c:178
 udf_write_begin+0x21f/0x2a0 fs/udf/inode.c:265
 generic_perform_write+0x3c4/0x900 mm/filemap.c:4254
 __generic_file_write_iter+0x1f7/0x240 mm/filemap.c:4371
 udf_file_write_iter+0x233/0x7b0 fs/udf/file.c:111
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x7d3/0x11d0 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x1eb/0x250 fs/read_write.c:798
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcbdb58f749
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:00007fcbdc3b4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fcbdb7e5fa0 RCX: 00007fcbdb58f749
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007fcbdb613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7c R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcbdb7e6038 R14: 00007fcbdb7e5fa0 R15: 00007fffffa60c68
 </TASK>