linux-kernel - Re: [PATCH 0/2] perf stat: fix segfault when closing events

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Date:   Tue, 23 May 2017 11:04:47 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     linux-kernel@...r.kernel.org
Cc:     acme@...nel.org, alexander.shishkin@...ux.intel.com,
        ganapatrao.kulkarni@...ium.com
Subject: Re: [PATCH 0/2] perf stat: fix segfault when closing events

Hi,

Does anyone have any comments on these?

I'm happy to rebase/resend if necessary.

I'd very much like to see this fixed.

Thanks,
Mark.

On Fri, Apr 28, 2017 at 12:47:08PM +0100, Mark Rutland wrote:
> Hi,
> 
> These patches fix a segfault seen in some cases when perf stat is exiting.
> 
> We don't balance opening/closing of events in all cases, and go out-of-bounds
> when we close events. Full details in the patch 2 commit message.
> 
> Thanks,
> Mark.
> 
> Mark Rutland (2):
>   perf evsel: add per{cpu,thread} close helpers
>   perf stat: balance opening/closing of events
> 
>  tools/perf/builtin-stat.c | 24 +++++++++++++++++++++++-
>  tools/perf/util/evsel.c   | 26 ++++++++++++++++++++------
>  tools/perf/util/evsel.h   |  4 ++++
>  3 files changed, 47 insertions(+), 7 deletions(-)
> 
> -- 
> 1.9.1
>