------------[ cut here ]------------ byte_offset WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd79/0xef0 fs/udf/truncate.c:224, CPU#0: syz.4.45/6139 Modules linked in: CPU: 0 UID: 0 PID: 6139 Comm: syz.4.45 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+0xd79/0xef0 fs/udf/truncate.c:224 Code: 3e 47 0f 48 3b 84 24 80 01 00 00 75 7a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 c8 d6 6e fe 90 <0f> 0b 90 e9 67 ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c f3 f3 ff ff RSP: 0018:ffffc900054c73e0 EFLAGS: 00010283 RAX: ffffffff835661c8 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc9000e699000 RSI: 0000000000000c56 RDI: 0000000000000c57 RBP: ffffc900054c75b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000001 R12: 0000000000000001 R13: 1ffff1100c3014bd R14: 0000000000000000 R15: 0000000000000000 FS: 00007f99ddb066c0(0000) GS:ffff888125c46000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000034236000 CR4: 00000000003526f0 Call Trace: udf_write_failed+0x16e/0x1b0 fs/udf/inode.c:180 udf_write_begin+0x217/0x270 fs/udf/inode.c:264 generic_perform_write+0x2ad/0x8b0 mm/filemap.c:4358 __generic_file_write_iter+0x1b1/0x240 mm/filemap.c:4472 udf_file_write_iter+0x2a6/0x630 fs/udf/file.c:112 iter_file_splice_write+0xa36/0x1240 fs/splice.c:736 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0x104/0x160 fs/splice.c:1159 splice_direct_to_actor+0x586/0xcc0 fs/splice.c:1103 do_splice_direct_actor fs/splice.c:1202 [inline] do_splice_direct+0x19b/0x2a0 fs/splice.c:1228 do_sendfile+0x540/0x7e0 fs/read_write.c:1371 __do_sys_sendfile64 fs/read_write.c:1432 [inline] __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1418 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: 0033:0x7f99df8ade99 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:00007f99ddb06028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f99dfb35fa0 RCX: 00007f99df8ade99 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007 RBP: 00007f99df943eaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f99dfb36038 R14: 00007f99dfb35fa0 R15: 00007ffd31914a28