diff mbox series

drm/amdgpu: fix a possible null pointer dereference

Message ID 20240622082219.1876200-1-make24@iscas.ac.cn (mailing list archive)
State New, archived
Headers show
Series drm/amdgpu: fix a possible null pointer dereference | expand

Commit Message

Ma Ke June 22, 2024, 8:22 a.m. UTC
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(+)

Comments

Joshua Ashton June 23, 2024, 9:20 a.m. UTC | #1
Are you planning on submitting a bogus CVE for this patch too?

- Joshie 
diff mbox series

Patch

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);
 	}
 }