From: Namhyung Kim Date: Mon, 18 Nov 2013 02:20:44 +0000 (+0900) Subject: perf header: Fix possible memory leaks in process_group_desc() X-Git-Tag: firefly_0821_release~176^2~4647^2~25^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=50a2740b839ece03b305facd3fc07cdc3b74247c;p=firefly-linux-kernel-4.4.55.git perf header: Fix possible memory leaks in process_group_desc() After processing all group descriptors or encountering an error, it frees all descriptors. However, current logic can leak memory since it might not traverse all descriptors. Note that the 'i' can have different value than nr_groups when an error occurred and it's safe to call free(desc[i].name) for every desc since we already make it NULL when it's reused for group names. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1384741244-7271-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 559c516f1cec..1cd035708931 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2107,7 +2107,7 @@ static int process_group_desc(struct perf_file_section *section __maybe_unused, ret = 0; out_free: - while ((int) --i >= 0) + for (i = 0; i < nr_groups; i++) free(desc[i].name); free(desc);