[PATCH] perf jevents: Fix suspicious code in fixregex()

Namhyung Kim
2020-09-03T15:25:31Z

The new string should have enough space for the original string and
the back slashes IMHO.

Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/pmu-events/jevents.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index fa86c5f997cc..fc9c158bfa13 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -137,7 +137,7 @@ static char *fixregex(char *s)
return s;

/* allocate space for a new string */
- fixed = (char *) malloc(len + 1);
+ fixed = (char *) malloc(len + esc_count + 1);
if (!fixed)
return NULL;

--
2.28.0.402.g5ffc5be6b7-goog