diff options
| author | Ma Ke <make_ruc2021@163.com> | 2023-10-09 17:04:46 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-28 16:56:17 +0000 |
| commit | 84c923d898905187ebfd4c0ef38cd1450af7e0ea (patch) | |
| tree | 40151aeaf6e4bd0d5479caf7f4b3ce654f42d155 /drivers/gpu | |
| parent | 2381f6b628b3214f07375e0adf5ce17093c31190 (diff) | |
drm/panel/panel-tpo-tpg110: fix a possible null pointer dereference
[ Upstream commit f22def5970c423ea7f87d5247bd0ef91416b0658 ]
In tpg110_get_modes(), the return value of drm_mode_duplicate() is
assigned to mode, which will lead to a NULL pointer dereference on
failure of drm_mode_duplicate(). Add a check to avoid npd.
Signed-off-by: Ma Ke <make_ruc2021@163.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231009090446.4043798-1-make_ruc2021@163.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009090446.4043798-1-make_ruc2021@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-tpo-tpg110.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-tpo-tpg110.c b/drivers/gpu/drm/panel/panel-tpo-tpg110.c index e3791dad6830..3360e7ccb0a7 100644 --- a/drivers/gpu/drm/panel/panel-tpo-tpg110.c +++ b/drivers/gpu/drm/panel/panel-tpo-tpg110.c @@ -379,6 +379,8 @@ static int tpg110_get_modes(struct drm_panel *panel, connector->display_info.bus_flags = tpg->panel_mode->bus_flags; mode = drm_mode_duplicate(connector->dev, &tpg->panel_mode->mode); + if (!mode) + return -ENOMEM; drm_mode_set_name(mode); mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; |