Hey, @Alessandrelli, Daniele took over this submission. I'm temporarily on a different project now. Regards, Declan -----Original Message----- From: lkp <lkp(a)intel.com&gt; Sent: Tuesday, October 13, 2020 9:29 AM To: Murphy, Declan <declan.murphy(a)intel.com&gt; Cc: kbuild-all(a)lists.01.org; Li, Yifan2 <yifan2.li(a)intel.com&gt; Subject: [intel-linux-intel-lts:5.4/yocto 15/1142] drivers/crypto/keembay/keembay-ocs-hcu-core.c:218:31: sparse: sparse: Using plain integer as NULL pointer tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto head: eeb611e5394c56d45c5cc8f7dc484c9f19e93143 commit: 9b07a958f2eb496c88faf0bd749eb600357f4190 [15/1142] crypto: keembay: Add Keem Bay OCS HCU config: x86_64-randconfig-s021-20201013 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-rc1-dirty # https://github.com/intel/linux-intel-lts/commit/9b07a958f2eb496c88faf0bd7... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 5.4/yocto git checkout 9b07a958f2eb496c88faf0bd749eb600357f4190 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" drivers/crypto/keembay/keembay-ocs-hcu-core.c:219:31: sparse: sparse: Using plain integer as NULL pointer drivers/crypto/keembay/keembay-ocs-hcu-core.c:749:31: sparse: sparse: Using plain integer as NULL pointer drivers/crypto/keembay/keembay-ocs-hcu-core.c:750:31: sparse: sparse: Using plain integer as NULL pointer vim +218 drivers/crypto/keembay/keembay-ocs-hcu-core.c 202 203 static void kmb_ocs_free_dma_list(struct ocs_hcu_rctx *rctx) 204 { 205 struct ocs_hcu_dev *hcu_dev = rctx->hcu_dev; 206 struct device *dev = hcu_dev->dev; 207 208 if (!rctx->dma_list_head || !rctx->dma_list_tail) 209 return; 210 211 if (rctx->sg_dma_nents > 0) 212 dma_unmap_sg(dev, hcu_dev->req->src, rctx->sg_dma_nents, 213 DMA_TO_DEVICE); 214 215 dma_free_coherent(dev, rctx->dma_list_size, rctx->dma_list_head, 216 rctx->ll_dma_addr); 217 219 rctx->dma_list_tail = 0; 220 rctx->ll_dma_addr = 0; 221 } 222 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org -------------------------------------------------------------- Intel Research and Development Ireland Limited Registered in Ireland Registered Office: Collinstown Industrial Park, Leixlip, County Kildare Registered Number: 308263 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.