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

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Message-ID: <20200403124028.GA18559@kernel.org>
Date:   Fri, 3 Apr 2020 09:40:28 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Kim Phillips <kim.phillips@....com>
Cc:     Andreas Gerstmayr <agerstmayr@...hat.com>,
        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

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.

- Arnaldo