linux-kernel - Re: [PATCH bpf 4/4] selftests: bpf: reset global state between reuseport test runs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20200123175644.x3j7jhl5owi34fdo@kafai-mbp.dhcp.thefacebook.com>
Date:   Thu, 23 Jan 2020 17:56:47 +0000
From:   Martin Lau <kafai@...com>
To:     Lorenz Bauer <lmb@...udflare.com>
CC:     Shuah Khan <shuah@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
        "Daniel Borkmann" <daniel@...earbox.net>,
        Song Liu <songliubraving@...com>, "Yonghong Song" <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf 4/4] selftests: bpf: reset global state between
 reuseport test runs

On Thu, Jan 23, 2020 at 04:59:33PM +0000, Lorenz Bauer wrote:
> Currently, there is a lot of false positives if a single reuseport test
> fails. This is because expected_results and the result map are not cleared.
Ah, right.  An earlier test failure has ripple effect on the following tests.

I notice another embarrassing typo.  Can you also make this change in this fix?

-static enum result expected_results[NR_RESULTS];
+static __u32 expected_results[NR_RESULTS];

> 
> Zero both after individual test runs, which fixes the mentioned false
> positives.
Thanks for the fix!

Acked-by: Martin KaFai Lau <kafai@...com>