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Date: Wed, 1 Nov 2017 13:13:57 +0100 From: Jiri Olsa <jolsa@...hat.com> To: Namhyung Kim <namhyung@...nel.org> Cc: Arnaldo Carvalho de Melo <acme@...nel.org>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Jiri Olsa <jolsa@...nel.org>, LKML <linux-kernel@...r.kernel.org>, kernel-team@....com, Jin Yao <yao.jin@...ux.intel.com>, Milian Wolff <milian.wolff@...b.com> Subject: Re: [PATCH 1/2] perf tools: Fix memory leak in addr2inlines() On Tue, Oct 31, 2017 at 11:06:53AM +0900, Namhyung Kim wrote: > When libbfd is not used, addr2inlines() executes `addr2line -i` and > process output line by line. But it resets filename to NULL in the loop > so getline() allocates additional memory everytime instead of realloc. > > Cc: Jin Yao <yao.jin@...ux.intel.com> > Cc: Milian Wolff <milian.wolff@...b.com> > Signed-off-by: Namhyung Kim <namhyung@...nel.org> Acked-by: Jiri Olsa <jolsa@...nel.org> jirka > --- > tools/perf/util/srcline.c | 7 ++----- > 1 file changed, 2 insertions(+), 5 deletions(-) > > diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c > index c143c3bc1ef8..51dc49c65476 100644 > --- a/tools/perf/util/srcline.c > +++ b/tools/perf/util/srcline.c > @@ -456,20 +456,17 @@ static struct inline_node *addr2inlines(const char *dso_name, u64 addr, > while (getline(&filename, &len, fp) != -1) { > char *srcline; > > - if (filename_split(filename, &line_nr) != 1) { > - free(filename); > + if (filename_split(filename, &line_nr) != 1) > goto out; > - } > > srcline = srcline_from_fileline(filename, line_nr); > if (inline_list__append(sym, srcline, node) != 0) > goto out; > - > - filename = NULL; > } > > out: > pclose(fp); > + free(filename); > > return node; > } > -- > 2.14.3 >
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