tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: ff5a1e6c7a5bcbdfb20dad7874015c71921c615d commit: 7c5e01902547a81d7d8b073eb3f130814d9125d9 [17/18] BACKPORT: FROMGIT: virtio: fix build for configs without dma-bufs config: x86_64-randconfig-m001-20200913 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git checkout 7c5e01902547a81d7d8b073eb3f130814d9125d9 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ld: drivers/media/virtio/virtio_video_device.o: in function `virtio_video_get_dma_buf_id': git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout 7c5e01902547a81d7d8b073eb3f130814d9125d9 vim +62 drivers/media/virtio/virtio_video_device.c bbca48582a7342c Dmitry Sepp 2020-02-18 53 76447af07bd090a Keiichi Watanabe 2020-03-25 54 static int virtio_video_get_dma_buf_id(struct virtio_video_device *vvd, 76447af07bd090a Keiichi Watanabe 2020-03-25 55 struct vb2_buffer *vb, uuid_t *uuid) 76447af07bd090a Keiichi Watanabe 2020-03-25 56 { 76447af07bd090a Keiichi Watanabe 2020-03-25 57 /** 76447af07bd090a Keiichi Watanabe 2020-03-25 58 * For multiplanar formats, we assume all planes are on one DMA buffer. 76447af07bd090a Keiichi Watanabe 2020-03-25 59 */ 76447af07bd090a Keiichi Watanabe 2020-03-25 60 struct dma_buf *dma_buf = dma_buf_get(vb->planes[0].m.fd); 76447af07bd090a Keiichi Watanabe 2020-03-25 61 4bc6f86266bb489 David Stevens 2020-09-02 @62 return virtio_dma_buf_get_uuid(dma_buf, uuid); 76447af07bd090a Keiichi Watanabe 2020-03-25 63 } 76447af07bd090a Keiichi Watanabe 2020-03-25 64 :::::: The code at line 62 was first introduced by commit :::::: 4bc6f86266bb48997bfaf447010d172a75d16944 CHROMIUM: virtio: Update virtgpu buffer sharing API :::::: TO: David Stevens <stevensd(a)chromium.org&gt; :::::: CC: Commit Bot <commit-bot(a)chromium.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org