Hi Dongwon,
url: https://github.com/intel-lab-lkp/linux/commits/Dongwon-Kim/drm-virtio-releas... base: git://anongit.freedesktop.org/drm/drm drm-next config: parisc-randconfig-m031-20220509 (https://download.01.org/0day-ci/archive/20220511/202205112132.FqtvzLWA-lkp@i...) compiler: hppa-linux-gcc (GCC) 11.3.0
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot lkp@intel.com Reported-by: Dan Carpenter dan.carpenter@oracle.com
smatch warnings: drivers/gpu/drm/virtio/virtgpu_plane.c:158 virtio_gpu_resource_flush() error: uninitialized symbol 'objs'.
vim +/objs +158 drivers/gpu/drm/virtio/virtgpu_plane.c
5c68ab9276aae4 Vivek Kasireddy 2021-06-10 132 static void virtio_gpu_resource_flush(struct drm_plane *plane, 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 133 uint32_t x, uint32_t y, 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 134 uint32_t width, uint32_t height) 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 135 { 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 136 struct drm_device *dev = plane->dev; 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 137 struct virtio_gpu_device *vgdev = dev->dev_private; 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 138 struct virtio_gpu_framebuffer *vgfb; 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 139 struct virtio_gpu_object *bo; 47558b189c1d34 Dongwon Kim 2022-05-10 140 struct virtio_gpu_object_array *objs; 47558b189c1d34 Dongwon Kim 2022-05-10 141 struct virtio_gpu_fence *fence; 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 142 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 143 vgfb = to_virtio_gpu_framebuffer(plane->state->fb); 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 144 bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]); 5c7787de5069b5 Dongwon Kim 2022-05-10 145 fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); 47558b189c1d34 Dongwon Kim 2022-05-10 146 47558b189c1d34 Dongwon Kim 2022-05-10 147 if (fence) { 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 148 objs = virtio_gpu_array_alloc(1); 47558b189c1d34 Dongwon Kim 2022-05-10 149 if (!objs) { 47558b189c1d34 Dongwon Kim 2022-05-10 150 kfree(fence); 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 151 return; 47558b189c1d34 Dongwon Kim 2022-05-10 152 } 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 153 virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]); 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 154 virtio_gpu_array_lock_resv(objs); 47558b189c1d34 Dongwon Kim 2022-05-10 155 }
"objs" not set on else path
47558b189c1d34 Dongwon Kim 2022-05-10 156 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 157 virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, x, y, 47558b189c1d34 Dongwon Kim 2022-05-10 @158 width, height, objs, fence); 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 159 virtio_gpu_notify(vgdev); 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 160 47558b189c1d34 Dongwon Kim 2022-05-10 161 if (fence) { 47558b189c1d34 Dongwon Kim 2022-05-10 162 dma_fence_wait_timeout(&fence->f, true, 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 163 msecs_to_jiffies(50)); 47558b189c1d34 Dongwon Kim 2022-05-10 164 dma_fence_put(&fence->f); 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 165 } 5c68ab9276aae4 Vivek Kasireddy 2021-06-10 166 }