linux-kernel - Re: perf: WARNING in perf_event

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Message-ID: <CAOMGZ=FpjCCATA0Ym-eX939Uz66=L=0DfzUmYwqkMFvEGCjL3A@mail.gmail.com>
Date:   Sun, 28 Aug 2016 21:21:48 +0200
From:   Vegard Nossum <vegard.nossum@...il.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Stephane Eranian <eranian@...gle.com>,
        syzkaller <syzkaller@...glegroups.com>,
        Kostya Serebryany <kcc@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: Re: perf: WARNING in perf_event_read

On 28 August 2016 at 20:03, Dmitry Vyukov <dvyukov@...gle.com> wrote:
> Hello,
>
> I've got the following WARNING while running syzkaller fuzzer:
>
> ------------[ cut here ]------------
> WARNING: CPU: 3 PID: 23874 at kernel/events/core.c:3554

Looks like the same as this, with patch from Jiri Olsa:

https://lkml.org/lkml/2016/8/21/58 (report)
https://lkml.org/lkml/2016/8/22/221 (patch)


Vegard