Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on powerpc/next] [also build test WARNING on tip/x86/mm asm-generic/master linus/master sparc/master v5.13-rc7] [cannot apply to sparc-next/master next-20210622] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/akpm-linux-foundation-org/mm-ren... base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: riscv-randconfig-r036-20210622 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project b3634d3e88b7f26534a5057bff182b7dced584fc) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/490957abd94a7b67576c0029c771c6691... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review akpm-linux-foundation-org/mm-rename-pud_page_vaddr-to-pud_pgtable-and-make-it-return-pmd_t-patch-removed-from-mm-tree/20210617-075958 git checkout 490957abd94a7b67576c0029c771c6691dce1878 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): if (pgd_page_vaddr(*pgdp) == (unsigned long)lm_alias(kasan_early_shadow_pmd) && ~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/mm/kasan_init.c:154:30: warning: comparison between pointer and integer ('pmd_t *' and 'unsigned long') [-Wpointer-integer-compare] if (pgd_page_vaddr(*pgd_k) == (unsigned long)lm_alias(kasan_early_shadow_pmd)) { ~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for LOCKDEP Depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && (FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86) Selected by - LOCK_STAT && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT - DEBUG_LOCK_ALLOC && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT vim +122 arch/riscv/mm/kasan_init.c d127c19c7bea61 Alexandre Ghiti 2021-02-08 107 1987501b1130c6 Jisheng Zhang 2021-03-30 108 static void __init kasan_populate_pgd(unsigned long vaddr, unsigned long end) d127c19c7bea61 Alexandre Ghiti 2021-02-08 109 { d127c19c7bea61 Alexandre Ghiti 2021-02-08 110 phys_addr_t phys_addr; d127c19c7bea61 Alexandre Ghiti 2021-02-08 111 pgd_t *pgdp = pgd_offset_k(vaddr); d127c19c7bea61 Alexandre Ghiti 2021-02-08 112 unsigned long next; d127c19c7bea61 Alexandre Ghiti 2021-02-08 113 d127c19c7bea61 Alexandre Ghiti 2021-02-08 114 do { d127c19c7bea61 Alexandre Ghiti 2021-02-08 115 next = pgd_addr_end(vaddr, end); d7fbcf40df86bb Alexandre Ghiti 2021-02-08 116 d7fbcf40df86bb Alexandre Ghiti 2021-02-08 117 /* d7fbcf40df86bb Alexandre Ghiti 2021-02-08 118 * pgdp can't be none since kasan_early_init initialized all KASAN d7fbcf40df86bb Alexandre Ghiti 2021-02-08 119 * shadow region with kasan_early_shadow_pmd: if this is stillthe case, d7fbcf40df86bb Alexandre Ghiti 2021-02-08 120 * that means we can try to allocate a hugepage as a replacement. d7fbcf40df86bb Alexandre Ghiti 2021-02-08 121 */ d7fbcf40df86bb Alexandre Ghiti 2021-02-08 @122 if (pgd_page_vaddr(*pgdp) == (unsigned long)lm_alias(kasan_early_shadow_pmd) && d7fbcf40df86bb Alexandre Ghiti 2021-02-08 123 IS_ALIGNED(vaddr, PGDIR_SIZE) && (next - vaddr) >= PGDIR_SIZE) { d7fbcf40df86bb Alexandre Ghiti 2021-02-08 124 phys_addr = memblock_phys_alloc(PGDIR_SIZE, PGDIR_SIZE); d7fbcf40df86bb Alexandre Ghiti 2021-02-08 125 if (phys_addr) { d7fbcf40df86bb Alexandre Ghiti 2021-02-08 126 set_pgd(pgdp, pfn_pgd(PFN_DOWN(phys_addr), PAGE_KERNEL)); d7fbcf40df86bb Alexandre Ghiti 2021-02-08 127 continue; d7fbcf40df86bb Alexandre Ghiti 2021-02-08 128 } d7fbcf40df86bb Alexandre Ghiti 2021-02-08 129 } d7fbcf40df86bb Alexandre Ghiti 2021-02-08 130 d127c19c7bea61 Alexandre Ghiti 2021-02-08 131 kasan_populate_pmd(pgdp, vaddr, next); d127c19c7bea61 Alexandre Ghiti 2021-02-08 132 } while (pgdp++, vaddr = next, vaddr != end); d127c19c7bea61 Alexandre Ghiti 2021-02-08 133 } d127c19c7bea61 Alexandre Ghiti 2021-02-08 134 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org