diff --git a/sys/dev/drm/amd/amdgpu/amdgpu_fb.c b/sys/dev/drm/amd/amdgpu/amdgpu_fb.c
--- a/sys/dev/drm/amd/amdgpu/amdgpu_fb.c
+++ b/sys/dev/drm/amd/amdgpu/amdgpu_fb.c
@@ -210,7 +210,7 @@
 	struct amdgpu_device *adev = rfbdev->adev;
 	struct fb_info *info;
 	struct drm_framebuffer *fb = NULL;
-	struct drm_mode_fb_cmd2 mode_cmd;
+	struct drm_mode_fb_cmd2 mode_cmd = { 0 };
 	struct drm_gem_object *gobj = NULL;
 	struct amdgpu_bo *abo = NULL;
 	int ret;