| Message ID | 20240622082219.1876200-1-make24@iscas.ac.cn (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/amdgpu: fix a possible null pointer dereference | expand |
Are you planning on submitting a bogus CVE for this patch too? - Joshie
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index 9caba10315a8..6cf946adb6fe 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -458,6 +458,8 @@ static void amdgpu_connector_add_common_modes(struct drm_encoder *encoder, continue; mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false); + if (!mode) + continue; drm_mode_probed_add(connector, mode); } }
In amdgpu_connector_add_common_modes(), the return value of drm_cvt_mode() is assigned to mode, which will lead to a NULL pointer dereference on failure of drm_cvt_mode(). Add a check to avoid npd. Signed-off-by: Ma Ke <make24@iscas.ac.cn> --- drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 2 ++ 1 file changed, 2 insertions(+)