malhuda/msm-4.14
1
0
Fork 0
mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/nouveau: fix null pointer dereference in nouveau_connector_get_modes

Browse Source 
commit 80bec6825b19d95ccdfd3393cf8ec15ff2a749b4 upstream.

In nouveau_connector_get_modes(), the return value of drm_mode_duplicate()
is assigned to mode, which will lead to a possible NULL pointer
dereference on failure of drm_mode_duplicate(). Add a check to avoid npd.

Cc: stable@vger.kernel.org
Fixes: 6ee738610f41 ("drm/nouveau: Add DRM driver for NVIDIA GPUs")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240627074204.3023776-1-make24@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 9baf60323efa992b7c915094529f0a1882c34e7e)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
This commit is contained in:
Ma Ke 2024-06-27 15:42:04 +08:00 committed by Vegard Nossum
parent 6949c52837
commit c300d28e40
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/nouveau/nouveau_connector.c
View File

@ -958,6 +958,9 @@ nouveau_connector_get_modes(struct drm_connector *connector)
struct drm_display_mode *mode;
mode = drm_mode_duplicate(dev, nv_connector->native_mode);
if (!mode)
return 0;
drm_mode_probed_add(connector, mode);
ret = 1;
}