Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.9 01/17] drm/tilcdc: fix leak & null ref in panel_connector_get_modes | Date | Mon, 10 Aug 2020 15:14:02 -0400 |
| |
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
[ Upstream commit 3f9c1c872cc97875ddc8d63bc9fe6ee13652b933 ]
If videomode_from_timings() returns true, the mode allocated with drm_mode_create will be leaked.
Also, the return value of drm_mode_create() is never checked, and thus could cause NULL deref.
Fix these two issues.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200429104234.18910-1-tomi.valkeinen@ti.com Reviewed-by: Jyri Sarha <jsarha@ti.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/gpu/drm/tilcdc/tilcdc_panel.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c index 2134bb20fbe9d..2836154dbb126 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c @@ -159,12 +159,16 @@ static int panel_connector_get_modes(struct drm_connector *connector) int i; for (i = 0; i < timings->num_timings; i++) { - struct drm_display_mode *mode = drm_mode_create(dev); + struct drm_display_mode *mode; struct videomode vm; if (videomode_from_timings(timings, &vm, i)) break; + mode = drm_mode_create(dev); + if (!mode) + break; + drm_display_mode_from_videomode(&vm, mode); mode->type = DRM_MODE_TYPE_DRIVER; -- 2.25.1
| |