linux-kernel - Re: perf: perf sched lat segfault

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Message-ID: <1381229421.15686.17.camel@marge.simpson.net>
Date:	Tue, 08 Oct 2013 12:50:21 +0200
From:	Mike Galbraith <bitbucket@...ine.de>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: perf: perf sched lat segfault - bisected

On Tue, 2013-10-08 at 12:36 +0200, Stephane Eranian wrote: 
> Mike,
> 
> I found the problem in perf. The tool->mmap2 pointer is NULL for sched tool.
> Let me send you a patch to fix this.

Ah, no need.  It's probably something like so, which fixed it.

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c 
index d8c51b2f263f..a60d14dd18e7 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1658,6 +1658,7 @@ static struct perf_sched sched = {
                .comm            = perf_event__process_comm,
                .lost            = perf_event__process_lost,
                .fork            = perf_sched__process_fork_event,
+               .mmap2           = perf_event__process_mmap2,
                .ordered_samples = true,
        },
        .cmp_pid              = LIST_HEAD_INIT(sched.cmp_pid),


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