diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-07-11 11:46:33 +0300 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:58:24 +0200 |
| commit | 5c442edaf99b30b35fc2b9fdf4380f1c45af9bdc (patch) | |
| tree | 47b2e02821c2f98f3ea811bc64d9aa7b1799c99d /drivers/gpu/drm | |
| parent | 3556be99904ef8bcbe663e5cac609558b0f30670 (diff) | |
qxl: check for kmap failures
commit f4cceb2affcd1285d4ce498089e8a79f4cd2fa66 upstream.
If kmap fails, it leads to memory corruption.
Fixes: f64122c1f6ad ('drm: add new QXL driver. (v1.4)')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160711084633.GA31411@mwanda
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_draw.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_draw.c b/drivers/gpu/drm/qxl/qxl_draw.c index 3c8c3dbf9..ff320522f 100644 --- a/drivers/gpu/drm/qxl/qxl_draw.c +++ b/drivers/gpu/drm/qxl/qxl_draw.c @@ -114,6 +114,8 @@ static int qxl_palette_create_1bit(struct qxl_bo **palette_bo, palette_bo); ret = qxl_bo_kmap(*palette_bo, (void **)&pal); + if (ret) + return ret; pal->num_ents = 2; pal->unique = unique++; if (visual == FB_VISUAL_TRUECOLOR || visual == FB_VISUAL_DIRECTCOLOR) { |