Hi "Alex,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on linux/master]
[cannot apply to char-misc/char-misc-testing linus/master v5.12-rc1 next-20210303]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Alex-Benn-e/RPMB-internal-and-user-space-API-WIP-virtio-rpmb-frontend/20210304-034302
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ab38c17aac10bf55ab3efde4c4db3893d8691d2
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/623292c00087bb73229681560c57142085144377
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Alex-Benn-e/RPMB-internal-and-user-space-API-WIP-virtio-rpmb-frontend/20210304-034302
        git checkout 623292c00087bb73229681560c57142085144377
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/char/rpmb/virtio_rpmb.c: In function 'rpmb_virtio_get_write_count':
>> drivers/char/rpmb/virtio_rpmb.c:227:1: warning: the frame size of 1104 bytes is larger than 1024 bytes [-Wframe-larger-than=]
     227 | }
         | ^
   drivers/char/rpmb/virtio_rpmb.c: In function 'rpmb_virtio_program_key':
   drivers/char/rpmb/virtio_rpmb.c:175:1: warning: the frame size of 1108 bytes is larger than 1024 bytes [-Wframe-larger-than=]
     175 | }
         | ^


vim +227 drivers/char/rpmb/virtio_rpmb.c

   191	
   192	static int rpmb_virtio_get_write_count(struct device *dev, u8 target)
   193	{
   194		struct virtio_device *vdev = dev_to_virtio(dev);
   195		struct virtio_rpmb_info *vi = vdev->priv;
   196		struct scatterlist out_frame;
   197		struct scatterlist in_frame;
   198		struct scatterlist *sgs[2];
   199		unsigned int len;
   200		struct virtio_rpmb_frame resp;
   201		struct virtio_rpmb_frame cmd = {
   202			.req_resp = cpu_to_le16(VIRTIO_RPMB_REQ_GET_WRITE_COUNTER)
   203		};
   204	
   205		mutex_lock(&vi->lock);
   206	
   207		/* Wrap into SG array */
   208		sg_init_one(&out_frame, &cmd, sizeof(cmd));
   209		sg_init_one(&in_frame, &resp, sizeof(resp));
   210		sgs[0] = &out_frame;
   211		sgs[1] = &in_frame;
   212	
   213		/* Send it */
   214		virtqueue_add_sgs(vi->vq, sgs, 1, 1, vi, GFP_KERNEL);
   215		virtqueue_kick(vi->vq);
   216		wait_event(vi->have_data, virtqueue_get_buf(vi->vq, &len));
   217	
   218		mutex_unlock(&vi->lock);
   219	
   220		if (le16_to_cpu(resp.req_resp) != VIRTIO_RPMB_RESP_GET_COUNTER) {
   221			dev_err(dev, "failed to program key (%x/%x)",
   222				le16_to_cpu(resp.req_resp), le16_to_cpu(resp.result));
   223			return -EPROTO;
   224		}
   225	
   226		return le16_to_cpu(resp.result) == VIRTIO_RPMB_RES_OK ? be32_to_cpu(resp.write_counter) : -EIO;
 > 227	}
   228	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org