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Date: Thu, 26 Sep 2013 11:06:13 -0300 From: Arnaldo Carvalho de Melo <acme@...stprotocols.net> To: Namhyung Kim <namhyung@...nel.org> Cc: David Ahern <dsahern@...il.com>, Sonny Rao <sonnyrao@...omium.org>, linux-kernel@...r.kernel.org, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Ingo Molnar <mingo@...hat.com>, Jiri Olsa <jolsa@...hat.com>, Stephane Eranian <eranian@...gle.com> Subject: Re: [PATCH] perf: fix infinite loop with corrupted header Em Thu, Sep 26, 2013 at 10:59:37PM +0900, Namhyung Kim escreveu: > 2013-09-26 (목), 10:46 -0300, Arnaldo Carvalho de Melo: > > 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? > > Did you mean this? Not at that moment, but yes, I looked up the discussion and found this, which I think is sensible, would like just to do some testing, and if you could submit a patch combining your change with David's, I think it would be good. Thanks, - Arnaldo > https://lkml.org/lkml/2013/5/9/670 > > > Thanks, > Namhyung > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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