loop5: detected capacity change from 0 to 512 UDF-fs: error (device loop5): udf_read_tagged: read failed, block=256, location=256 ------------[ cut here ]------------ byte_offset WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd92/0xf00 fs/udf/truncate.c:224, CPU#1: syz.5.745/15019 Modules linked in: CPU: 1 UID: 0 PID: 15019 Comm: syz.5.745 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:udf_truncate_extents+0xd92/0xf00 fs/udf/truncate.c:224 Code: fb 19 0f 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 df 96 74 fe 90 <0f> 0b 90 e9 64 ff ff ff 44 89 e9 80 e1 07 38 c1 0f 8c da f3 ff ff RSP: 0018:ffffc90003d278a0 EFLAGS: 00010283 RAX: ffffffff834fd531 RBX: 1ffff1100c514a63 RCX: 0000000000080000 RDX: ffffc9001eb4d000 RSI: 0000000000000b42 RDI: 0000000000000b43 RBP: ffffc90003d27a78 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 000000000000000a R15: 000000000000000a FS: 00007f9610a2e6c0(0000) GS:ffff888126283000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f96109ebff8 CR3: 000000007a706000 CR4: 00000000003526f0 Call Trace: udf_write_failed+0x18b/0x1c0 fs/udf/inode.c:180 udf_write_begin+0x217/0x270 fs/udf/inode.c:264 generic_perform_write+0x2af/0x8b0 mm/filemap.c:4325 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:112 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x629/0xba0 fs/read_write.c:688 ksys_pwrite64 fs/read_write.c:795 [inline] __do_sys_pwrite64 fs/read_write.c:803 [inline] __se_sys_pwrite64 fs/read_write.c:800 [inline] __x64_sys_pwrite64+0x19c/0x230 fs/read_write.c:800 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f96127dce59 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:00007f9610a2e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f9612a55fa0 RCX: 00007f96127dce59 RDX: 00000000200000c1 RSI: 00002000000000c0 RDI: 0000000000000007 RBP: 00007f9612872d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000009000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9612a56038 R14: 00007f9612a55fa0 R15: 00007fffe27247a8