drm: Fix framebuffer leak

Do not leak framebuffer if client provided crtc id found invalid.

Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1502250781-5779-1-git-send-email-nmahale@nvidia.com

diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 5dc8c4350602a561fe4cfd77fce77e26770696fb..e40c12fabbdeaf9a325811d25e17c30990637e12 100644 (file)
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -601,6 +601,7 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 
                crtc = drm_crtc_find(dev, plane_req->crtc_id);
                if (!crtc) {
+                       drm_framebuffer_put(fb);
                        DRM_DEBUG_KMS("Unknown crtc ID %d\n",
                                      plane_req->crtc_id);
                        return -ENOENT;