linux-kernel - Re: [PATCH] perf script report: fix segfault when using DWARF mode

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Message-ID: <bf95c9f1-1970-fce4-c6f2-dc231730e7ab@redhat.com>
Date:   Fri, 3 Apr 2020 15:16:48 +0200
From:   Andreas Gerstmayr <agerstmayr@...hat.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Kim Phillips <kim.phillips@....com>
Cc:     linux-perf-users@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf script report: fix segfault when using DWARF mode

On 03.04.20 14:40, Arnaldo Carvalho de Melo wrote:
> Em Thu, Apr 02, 2020 at 02:07:51PM -0500, Kim Phillips escreveu:
>> On 4/2/20 7:54 AM, Andreas Gerstmayr wrote:
>>> When running perf script report with a Python script and a callgraph in
>>> DWARF mode, intr_regs->regs can be 0 and therefore crashing the regs_map
>>> function.
>>>
>>> Added a check for this condition (same check as in builtin-script.c:595).
>>>
>>> Signed-off-by: Andreas Gerstmayr <agerstmayr@...hat.com>
>>> ---
>>
>> Tested-by: Kim Phillips <kim.phillips@....com>
> 
> Thanks, added this to that patch.
> 

Great, thanks!


Cheers,
Andreas