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

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Date:   Thu, 2 Apr 2020 14:07:51 -0500
From:   Kim Phillips <kim.phillips@....com>
To:     Andreas Gerstmayr <agerstmayr@...hat.com>,
        linux-perf-users@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        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 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,

Kim