tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git arm-kill-set_fs-5 head: 1086c1cb895540fdf215aecf3ed4a96843d6633e commit: 7c6abb06b21a8c97bae4a330de4a490c5acf0dbf [17/40] scsi: megaraid_sas: simplify compat_ioctl handling config: arc-randconfig-s032-20200918 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-201-g24bdaac6-dirty git checkout 7c6abb06b21a8c97bae4a330de4a490c5acf0dbf # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arc 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/scsi/megaraid/megaraid_sas_base.c:4542:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:4542:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:4542:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:4793:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:4793:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:4793:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:6608:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:6608:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:6608:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:4449:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:4449:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:4449:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:277:31: sparse: sparse: restricted __le16 degrades to integer drivers/scsi/megaraid/megaraid_sas_base.c:283:31: sparse: sparse: cast from restricted __le16 drivers/scsi/megaraid/megaraid_sas_base.c:409:29: sparse: sparse: cast to restricted __le32 drivers/scsi/megaraid/megaraid_sas_base.c:1213:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] opcode @@ got restricted __le32 [usertype] opcode @@ drivers/scsi/megaraid/megaraid_sas_base.c:1213:32: sparse: expected unsigned int [usertype] opcode drivers/scsi/megaraid/megaraid_sas_base.c:1213:32: sparse: got restricted __le32 [usertype] opcode drivers/scsi/megaraid/megaraid_sas_base.c:1991:33: sparse: sparse: cast to restricted __le32 drivers/scsi/megaraid/megaraid_sas_base.c:2032:34: sparse: sparse: cast to restricted __le32 drivers/scsi/megaraid/megaraid_sas_base.c:4673:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:4673:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:4673:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:4912:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:4912:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:4912:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:5097:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:5097:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:5097:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:5179:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:5179:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:5179:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:6161:42: sparse: sparse: cast removes address space '__iomem' of expression drivers/scsi/megaraid/megaraid_sas_base.c:6160:57: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] [usertype] __iomem * @@ got unsigned int [usertype] * @@ drivers/scsi/megaraid/megaraid_sas_base.c:6160:57: sparse: expected unsigned int [noderef] [usertype] __iomem * drivers/scsi/megaraid/megaraid_sas_base.c:6160:57: sparse: got unsigned int [usertype] * drivers/scsi/megaraid/megaraid_sas_base.c:6165:34: sparse: sparse: cast removes address space '__iomem' of expression drivers/scsi/megaraid/megaraid_sas_base.c:6164:57: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] [usertype] __iomem * @@ got unsigned int [usertype] * @@ drivers/scsi/megaraid/megaraid_sas_base.c:6164:57: sparse: expected unsigned int [noderef] [usertype] __iomem * drivers/scsi/megaraid/megaraid_sas_base.c:6164:57: sparse: got unsigned int [usertype] * drivers/scsi/megaraid/megaraid_sas_base.c:6472:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:6472:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:6472:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:6686:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] flags @@ got int @@ drivers/scsi/megaraid/megaraid_sas_base.c:6686:21: sparse: expected restricted __le16 [usertype] flags drivers/scsi/megaraid/megaraid_sas_base.c:6686:21: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:7422:44: sparse: sparse: restricted __le32 degrades to integer drivers/scsi/megaraid/megaraid_sas_base.c:8053:23: sparse: sparse: incorrect type in assignment (different base types) @@ expected int crash_support @@ got restricted __le32 @@ drivers/scsi/megaraid/megaraid_sas_base.c:8053:23: sparse: expected int crash_support drivers/scsi/megaraid/megaraid_sas_base.c:8053:23: sparse: got restricted __le32 drivers/scsi/megaraid/megaraid_sas_base.c:8137:31: sparse: sparse: invalid assignment: &= drivers/scsi/megaraid/megaraid_sas_base.c:8137:31: sparse: left side has type restricted __le16 drivers/scsi/megaraid/megaraid_sas_base.c:8137:31: sparse: right side has type int drivers/scsi/megaraid/megaraid_sas_base.c:8347:24: sparse: got int drivers/scsi/megaraid/megaraid_sas_base.c:8669:46: sparse: sparse: restricted __le32 degrades to integer # https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/commi... git remote add arnd-playground https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git git fetch --no-tags arnd-playground arm-kill-set_fs-5 git checkout 7c6abb06b21a8c97bae4a330de4a490c5acf0dbf vim +8347 drivers/scsi/megaraid/megaraid_sas_base.c 8335 8336 static struct megasas_iocpacket * 8337 megasas_compat_iocpacket_get_user(void __user *arg) 8338 { 8339 struct megasas_iocpacket *ioc; 8340 struct compat_megasas_iocpacket __user *cioc = arg; 8341 size_t size; 8342 int err = -EFAULT; 8343 int i; 8344 8345 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); 8346 if (!ioc) 8348 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); 8349 if (copy_from_user(ioc, arg, size)) 8350 goto out; 8351 8352 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8353 compat_uptr_t iov_base; 8354 if (get_user(iov_base, &cioc->sgl[i].iov_base) || 8355 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) { 8356 goto out; 8357 } 8358 ioc->sgl[i].iov_base = compat_ptr(iov_base); 8359 } 8360 8361 return ioc; 8362 out: 8363 kfree(ioc); 8364 8365 return ERR_PTR(err); 8366 } 8367 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org