tree: https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git for-next.mmap-fault head: bfd94d74183df4cc99a705b96f2be61a865e5564 commit: 88a42059bb37be7ced7c0f4a62de07195bd7074e [3/12] Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable} config: s390-randconfig-s031-20210803 (attached as .config) compiler: s390-linux-gcc (GCC) 10.3.0 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: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git/commit/?id=88a42059bb37be7ced7c0f4a62de07195bd7074e git remote add gfs2 https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git git fetch --no-tags gfs2 for-next.mmap-fault git checkout 88a42059bb37be7ced7c0f4a62de07195bd7074e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> sparse warnings: (new ones prefixed by >>) >> mm/gup.c:1685:23: sparse: sparse: Using plain integer as NULL pointer mm/gup.c:1711:23: sparse: sparse: Using plain integer as NULL pointer vim +1685 mm/gup.c 1671 1672 size_t fault_in_writeable(char __user *uaddr, size_t size) 1673 { 1674 char __user *start = uaddr, *end; 1675 1676 if (unlikely(size == 0)) 1677 return 0; 1678 if ((unsigned long)uaddr & ~PAGE_MASK) { 1679 if (unlikely(__put_user(0, uaddr) != 0)) 1680 return 0; 1681 uaddr = (char __user *)((unsigned long)uaddr | ~PAGE_MASK) + 1; 1682 } 1683 end = (char __user *)PAGE_ALIGN((unsigned long)uaddr + size); 1684 if (unlikely(end < uaddr)) > 1685 end = 0; 1686 while (uaddr != end) { 1687 if (unlikely(__put_user(0, uaddr) != 0)) 1688 goto out; 1689 uaddr += PAGE_SIZE; 1690 } 1691 1692 out: 1693 return min_t(size_t, uaddr - start, size); 1694 } 1695 EXPORT_SYMBOL(fault_in_writeable); 1696 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
