linux-kernel - Re: [PATCH v6 13/15] selftests/nolibc: add mmap

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Date:   Mon, 10 Jul 2023 09:04:07 +0200
From:   Willy Tarreau <w@....eu>
To:     Zhangjin Wu <falcon@...ylab.org>
Cc:     arnd@...db.de, david.laight@...lab.com,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-riscv@...ts.infradead.org, thomas@...ch.de
Subject: Re: [PATCH v6 13/15] selftests/nolibc: add mmap_bad test case

Hi Zhangjin,

On Mon, Jul 10, 2023 at 02:33:22AM +0800, Zhangjin Wu wrote:
> For qemu-user, I have rechecked the following version:
> 
>     $ qemu-x86_64 --version
>     qemu-x86_64 version 4.2.1 (Debian 1:4.2-3ubuntu6.18)
> 
>     $ qemu-x86_64 --version
>     qemu-x86_64 version 7.0.0 (Debian 1:7.0+dfsg-7ubuntu2.6~backport20.04.202306190332~ubuntu20.04.1)
> 
>     $ build/x86_64/pc/qemu/v8.0.2/qemu-x86_64 --version
>     qemu-x86_64 version 8.0.2 (v8.0.2-dirty)
> 
> all of them work well, as a comparison, what's your qemu-user version?

Spot on! I ran it remotely and had a different qemu in my default path:

  $ qemu-x86_64 --version
  qemu-x86_64 version 2.7.0, Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers

I didn't notice but it yells at me during the test:

  qemu: Unsupported syscall: 332

Locally with this version it's much cleaner:

  $ qemu-x86_64 --version
  qemu-x86_64 version 6.2.0
  Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers
  $ make run-user | grep status:
  143 test(s): 141 passed,   2 skipped,   0 failed => status: warning

So we can keep it and blame my environment for that failure.

Thanks for checking,
Willy