Commit 9ccbc211 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 97d0dd1e

tools/perf/tests/api-io.c

+2 −1
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include "tests.h"

#include <api/io.h>

#include <linux/kernel.h>

#include <linux/zalloc.h>



#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);

}