Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 08/13] perf record: Fix segfault with --no-mmap-pages | Date | Tue, 12 Nov 2013 17:46:13 -0300 |
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From: David Ahern <dsahern@gmail.com>
Adrian reported a segfault when using --no-out-pages:
$ tools/perf/perf record -vv --no-out-pages uname Segmentation fault (core dumped)
The same occurs with --no-mmap-pages. Fix by checking that str is non-NULL before parsing it.
Signed-off-by: David Ahern <dsahern@gmail.com> Reported-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1384267617-3446-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/util/evlist.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 99dc58e5dcc3..3960560f873a 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -719,6 +719,9 @@ int perf_evlist__parse_mmap_pages(const struct option *opt, const char *str, { .tag = 0 }, }; + if (str == NULL) + return -1; + val = parse_tag_value(str, tags); if (val != (unsigned long) -1) { /* we got file size value */ -- 1.8.1.4
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