linux-kernel - Re: [PATCH v2 0/5] perf, bts: Fallout from the fuzzer for perf/urgent

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Date:   Thu, 08 Sep 2016 11:51:08 +0300
From:   Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:     Vince Weaver <vincent.weaver@...ne.edu>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        eranian@...gle.com, Arnaldo Carvalho de Melo <acme@...radead.org>,
        vincent.weaver@...ne.edu
Subject: Re: [PATCH v2 0/5] perf, bts: Fallout from the fuzzer for perf/urgent

Vince Weaver <vincent.weaver@...ne.edu> writes:

> On the skylake machine with the original 5 patches I got this after 
> continuing to fuzz.  Sorry about the lack of frame pointer, next
> compile will have it enabled.
>
> If it matters, prior to this I hit the unrelated
> [25510.278199] WARNING: CPU: 1 PID: 25405 at kernel/events/core.c:3554 perf_event_read+0x18f/0x1a0
>
>
> [28682.174684] WARNING: CPU: 7 PID: 31992 at kernel/events/core.c:4961 perf_mmap_close+0x2e1/0x2f0

It just keeps on giving, doesn't it. I've got the same thing here during
the night, looking at it again. Did you capture the seed by any chance?

Thanks,
--
Alex