From: Namhyung Kim <namhyung....@lge.com>
When setup_sorting() is called, 'str' is passed to strtok_r() but it's
not checked to have a valid pointer. As strtok_r() accepts NULL
pointer on a first argument and use the third argument in that case,
it can cause a trouble since our third argument, tmp, is not
initialized.
Acked-by: Jiri Olsa <jo...@redhat.com>
Cc: Stephane Eranian <eran...@google.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
tools/perf/util/sort.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index d8b48827a17e..d41926cb9e3f 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -570,6 +570,11 @@ int setup_sorting(void)
char *tmp, *tok, *str = strdup(sort_order);
int ret = 0;
+ if (str == NULL) {
+ error("Not enough memory to setup sort keys");
+ return -ENOMEM;
+ }
+
for (tok = strtok_r(str, ", ", &tmp);
tok; tok = strtok_r(NULL, ", ", &tmp)) {
ret = sort_dimension__add(tok);
--
1.7.11.7
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