diff options
| author | Kangjie Lu <kjlu@umn.edu> | 2019-10-17 23:41:50 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-04 13:34:13 +0100 |
| commit | 8a0bb821889912b342b229aa26fec1eb77660d7a (patch) | |
| tree | 105cf9d9f2c2a6b10e24694a66869a261f2aacce /drivers | |
| parent | 85d1225b09578649415ebd0a34d3bbb7ec223364 (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')
| -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 1048f0c7c6ce..31e0899035f9 100644 --- a/drivers/gpu/drm/gma500/oaktrail_crtc.c +++ b/drivers/gpu/drm/gma500/oaktrail_crtc.c @@ -139,6 +139,7 @@ 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; @@ -195,6 +196,7 @@ 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; |