diff options
author | Kangjie Lu <kjlu@umn.edu> | 2019-10-17 23:41:50 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-31 16:44:13 +0100 |
commit | 9d1cdde7f629dc6e7f2f5a087e844946b022fa7c (patch) | |
tree | 4cddb9d8f8cdad6f278875498a98d66bce1b1988 /drivers/gpu/drm/gma500 | |
parent | 123c46d7326f7ff4fd5f54a10d4c07d67cd0ca52 (diff) |
drm/gma500: fix memory disclosures due to uninitialized bytes
[ Upstream commit ec3b7b6eb8c90b52f61adff11b6db7a8db34de19 ]
"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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191018044150.1899-1-kjlu@umn.edu
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/gma500')
-rw-r--r-- | drivers/gpu/drm/gma500/oaktrail_crtc.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |