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Message-Id: <1350272383-7016-1-git-send-email-namhyung@kernel.org> Date: Mon, 15 Oct 2012 12:39:42 +0900 From: Namhyung Kim <namhyung@...nel.org> To: Arnaldo Carvalho de Melo <acme@...stprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>, Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>, Namhyung Kim <namhyung.kim@....com> Subject: [PATCH 1/2] perf tools: Fix segfault when using srcline sort key From: Namhyung Kim <namhyung.kim@....com> The srcline sort key is for grouping samples based on their source file and line number. It use addr2line tool to get the information but it requires dso name. It caused a segfault when a sample does not have the name by dereferencing a NULL pointer. Fix it by using raw ip addresses for those samples. Signed-off-by: Namhyung Kim <namhyung@...nel.org> --- tools/perf/util/sort.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index b5b1b9211960..dd68f115d392 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -260,6 +260,9 @@ static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf, if (path != NULL) goto out_path; + if (!self->ms.map) + goto out_ip; + snprintf(cmd, sizeof(cmd), "addr2line -e %s %016" PRIx64, self->ms.map->dso->long_name, self->ip); fp = popen(cmd, "r"); -- 1.7.11.4 -- 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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