From 9ccbc21166ce149c5f7429cad22f9073d3fab0b1 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Apr 2023 09:50:08 -0300 Subject: [PATCH] perf tests api-io: Use zfree() to reduce chances of use after free Do defensive programming by using zfree() to initialize freed pointers to NULL, so that eventual use after free result in a NULL pointer deref instead of more subtle behaviour. Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/api-io.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/api-io.c b/tools/perf/tests/api-io.c index 6aea84ca6673..0ba3d5ccebcf 100644 --- a/tools/perf/tests/api-io.c +++ b/tools/perf/tests/api-io.c @@ -12,6 +12,7 @@ #include "tests.h" #include #include +#include #define TEMPL "/tmp/perf-test-XXXXXX" @@ -79,7 +80,7 @@ static int setup_test(char path[PATH_MAX], const char *contents, static void cleanup_test(char path[PATH_MAX], struct io *io) { - free(io->buf); + zfree(&io->buf); close(io->fd); unlink(path); } -- 2.39.5