id = 2302
title = "qemu-x86_64 crashes with \"Illegal Instruction\" on SPECCPU2017 Benchmarks"
state = "closed"
created_at = "2024-04-23T06:44:19.463Z"
closed_at = "2024-04-23T14:31:35.606Z"
labels = ["accel: TCG", "target: i386"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2302"
host-os = "Ubuntu 22.04.1"
host-arch = "x86_64"
qemu-version = "8.2.2"
guest-os = "n/a"
guest-arch = "n/a"
description = """I am running qemu-x86_64 with SPEC CPU 2017 benchmarks, and the compiled benchmarks such as Perlbench will crash unexpectedly. I have changed to three other machines to run it and still get crashes on two of them, I don't know what's the problem and want some help."""
reproduce = """1. Compile SPEC CPU 2017 basic Perlbench binary. 
2. Use the above command line to run it."""
additional = """I have added some debugging flags to qemu-x86_64 to test it. The "-d in_asm" flag gives me the instructions before the crash like this:
```
----------------
IN: Perl_lex_start
0x555555678a79:  48 89 83 a8 00 00 00     movq     %rax, 0xa8(%rbx)
0x555555678a80:  e9 01 ff ff ff           jmp      0x555555678986

----------------
IN: Perl_lex_start
0x555555678986:  48 8b 50 10              movq     0x10(%rax), %rdx
0x55555567898a:  41 83 e4 16              andl     $0x16, %r12d
0x55555567898e:  48 89 93 d0 00 00 00     movq     %rdx, 0xd0(%rbx)
0x555555678995:  48 89 93 c0 00 00 00     movq     %rdx, 0xc0(%rbx)
0x55555567899c:  62                       .byte    0x62

qemu: uncaught target signal 4 (Illegal instruction) - core dumped
Illegal instruction (core dumped)
```"""