tree: https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git simple_copy head: d6f32b90156624ae9dc06ef5873334a48e9b9806 commit: fcbd83ffa72af1eba12bcab1f34e0b956a563e02 [2/5] block: add simple copy support config: xtensa-randconfig-r004-20210209 (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?id... git remote add chao-linux https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git git fetch --no-tags chao-linux simple_copy git checkout fcbd83ffa72af1eba12bcab1f34e0b956a563e02 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): block/ioctl.c: In function 'blk_ioctl_copy': 164 | if (copy_from_user(rlist, (void __user *)crange.range_list, | ^ vim +164 block/ioctl.c 135 136 static int blk_ioctl_copy(struct block_device *bdev, fmode_t mode, 137 unsigned long arg) 138 { 139 struct copy_range crange; 140 struct range_entry *rlist; 141 struct request_queue *q = bdev_get_queue(bdev); 142 sector_t dest; 143 int ret; 144 145 if (!(mode & FMODE_WRITE)) 146 return -EBADF; 147 148 if (!blk_queue_copy(q)) 149 return -EOPNOTSUPP; 150 151 if (copy_from_user(&crange, (void __user *)arg, sizeof(crange))) 152 return -EFAULT; 153 154 if (crange.dest & ((1 << SECTOR_SHIFT) - 1)) 155 return -EFAULT; 156 dest = crange.dest; 157 158 rlist = kmalloc_array(crange.nr_range, sizeof(*rlist), 159 GFP_KERNEL); 160 161 if (!rlist) 162 return -ENOMEM; 163 165 sizeof(*rlist) * crange.nr_range)) { 166 ret = -EFAULT; 167 goto out; 168 } 169 170 ret = blkdev_issue_copy(bdev, crange.nr_range, rlist, bdev, dest, 171 GFP_KERNEL); 172 out: 173 kfree(rlist); 174 return ret; 175 } 176 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org