On Sun, Aug 14, 2022 at 10:41 PM kernel test robot <lkp@xxxxxxxxx> wrote: > > Hi Zach, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on akpm-mm/mm-everything] > > url: https://github.com/intel-lab-lkp/linux/commits/Zach-O-Keefe/mm-add-file-shmem-support-to-MADV_COLLAPSE/20220812-093122 > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220815/202208151331.uxreCJWj-lkp@xxxxxxxxx/config) > compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 > reproduce (this is a W=1 build): > # https://github.com/intel-lab-lkp/linux/commit/dff08746d6f7b9387b94360b66bd9db644542991 > git remote add linux-review https://github.com/intel-lab-lkp/linux > git fetch --no-tags linux-review Zach-O-Keefe/mm-add-file-shmem-support-to-MADV_COLLAPSE/20220812-093122 > git checkout dff08746d6f7b9387b94360b66bd9db644542991 > # save the config file > mkdir build_dir && cp config build_dir/.config > make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash > > If you fix the issue, kindly add following tag where applicable > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > mm/khugepaged.c: In function 'set_huge_pmd': > >> mm/khugepaged.c:1403:13: error: assignment of read-only variable 'vmf' > 1403 | vmf = (struct vm_fault) { > | ^ > > > vim +/vmf +1403 mm/khugepaged.c > > 1393 > 1394 /* hpage must be locked, and mmap_lock must be held in write */ > 1395 static int set_huge_pmd(struct vm_area_struct *vma, unsigned long addr, > 1396 pmd_t *pmdp, struct page *hpage) > 1397 { > 1398 struct vm_fault vmf; > 1399 > 1400 VM_BUG_ON(!PageTransHuge(hpage)); > 1401 mmap_assert_write_locked(vma->vm_mm); > 1402 > > 1403 vmf = (struct vm_fault) { > 1404 .vma = vma, > 1405 .address = addr, > 1406 .flags = 0, > 1407 .pmd = pmdp, > 1408 }; > 1409 > 1410 if (do_set_pmd(&vmf, hpage)) > 1411 return SCAN_FAIL; > 1412 > 1413 get_page(hpage); > 1414 return SCAN_SUCCEED; > 1415 } > 1416 > > -- > 0-DAY CI Kernel Test Service > https://01.org/lkp > Thanks lkp & apologies here. Anticipating at least one successive version and will include the fixes there.
