[PATCH 1/1] drm/gma500: dont expose stack, mrst_lvds_find_best_pll

From: Heinrich Schuchardt
Date: Sun Aug 21 2016 - 15:58:36 EST


All components of variable clock should be initialized
to avoid bytes from the kernel stack to be exposed.

Reported-by: Joe Perches <joe@xxxxxxxxxxx>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
---
drivers/gpu/drm/gma500/oaktrail_crtc.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/gma500/oaktrail_crtc.c b/drivers/gpu/drm/gma500/oaktrail_crtc.c
index 28bd8f3..0277d85 100644
--- a/drivers/gpu/drm/gma500/oaktrail_crtc.c
+++ b/drivers/gpu/drm/gma500/oaktrail_crtc.c
@@ -195,6 +195,7 @@ static bool mrst_lvds_find_best_pll(const struct gma_limit_t *limit,
struct gma_clock_t clock;
int err = target;

+ memset(clock, 0, sizeof(struct gma_clock_t));
memset(best_clock, 0, sizeof(*best_clock));

for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) {
--
2.1.4