"clock" may be copied to "best_clock". Initializing best_clock is not sufficient. The fix initializes clock as well to avoid memory disclosures and informaiton leaks.
Signed-off-by: Kangjie Lu kjlu@umn.edu --- drivers/gpu/drm/gma500/oaktrail_crtc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/gma500/oaktrail_crtc.c b/drivers/gpu/drm/gma500/oaktrail_crtc.c index 167c10767dd4..900e5499249d 100644 --- a/drivers/gpu/drm/gma500/oaktrail_crtc.c +++ b/drivers/gpu/drm/gma500/oaktrail_crtc.c @@ -129,6 +129,7 @@ static bool mrst_sdvo_find_best_pll(const struct gma_limit_t *limit, s32 freq_error, min_error = 100000;
memset(best_clock, 0, sizeof(*best_clock)); + memset(&clock, 0, sizeof(clock));
for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) { for (clock.n = limit->n.min; clock.n <= limit->n.max; @@ -185,6 +186,7 @@ static bool mrst_lvds_find_best_pll(const struct gma_limit_t *limit, int err = target;
memset(best_clock, 0, sizeof(*best_clock)); + memset(&clock, 0, sizeof(clock));
for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) { for (clock.p1 = limit->p1.min; clock.p1 <= limit->p1.max;