diff options
| author | Kangjie Lu <kjlu@umn.edu> | 2019-10-17 23:41:50 -0500 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-10-22 10:59:36 +0200 |
| commit | ec3b7b6eb8c90b52f61adff11b6db7a8db34de19 (patch) | |
| tree | 4b2057bfa0ddde02ebcc17700fa4606220442776 /drivers/gpu | |
| parent | 57a25a5f754ce27da2cfa6f413cfd366f878db76 (diff) | |
drm/gma500: fix memory disclosures due to uninitialized bytes
"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
Diffstat (limited to 'drivers/gpu')
| -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; |