Date: Thu, 26 Sep 2013 10:46:40 -0300
From: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
To: David Ahern <dsahern@gmail.com>
Cc: Sonny Rao <sonnyrao@chromium.org>, linux-kernel@vger.kernel.org,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Ingo Molnar <mingo@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH] perf: fix infinite loop with corrupted header
Message-ID: <20130926134640.GA26159@ghostprotocols.net>
References: <1380172836-13936-1-git-send-email-sonnyrao@chromium.org>
 <52443800.5080200@gmail.com>
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Em Thu, Sep 26, 2013 at 07:34:56AM -0600, David Ahern escreveu:
> On 9/25/13 11:20 PM, Sonny Rao wrote:
> >We recently ran into a corrupt perf data file which mostly looked okay
> >but the section size for data was set to 0.  This caused perf report to
> >get into an infinite loop in __perf_session_process_events().  Let's
> >just avoid this by bailing early and reporting it if there's an
> >invalid header.
> 
> Been suggested before:
> https://lkml.org/lkml/2013/5/9/405

Thanks for the pointer (and this latest patch as well), looking at it
now.

- Arnaldo
 
> Other changes went in around that time as well. Are you still seeing
> the loop on latest source?
> 
> David
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