On Thu, 27 May 2021 03:24:25 +0800 kernel test robot <lkp@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: f6b46ef27317b3441138b902689bd89e4f82c6f4 > commit: 55b24f9ce03ee4d6a06b874350c8297ac8135bf5 [5267/5396] mm/early_ioremap: add prototype for early_memremap_pgprot_adjust > config: x86_64-randconfig-a012-20210526 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 99155e913e9bad5f7f8a247f8bb3a3ff3da74af1) > 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 x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=55b24f9ce03ee4d6a06b874350c8297ac8135bf5 > git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout 55b24f9ce03ee4d6a06b874350c8297ac8135bf5 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > In file included from drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:7: > In file included from include/linux/dma-buf.h:16: > In file included from include/linux/dma-buf-map.h:9: > In file included from include/linux/io.h:13: > In file included from arch/x86/include/asm/io.h:44: > In file included from ./arch/x86/include/generated/asm/early_ioremap.h:1: > In file included from include/asm-generic/early_ioremap.h:6: > arch/x86/include/asm/fixmap.h:103:48: error: use of undeclared identifier 'NR_CPUS' > FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1, > ^ urgh, so x86_64 asm/fixmap.h isn't standalone - it needs threads.h for NR_CPUS. We have a lot of asm/fixmap.h's, so lazyass here will try this: --- a/include/asm-generic/early_ioremap.h~mm-early_ioremap-add-prototype-for-early_memremap_pgprot_adjust-fix +++ a/include/asm-generic/early_ioremap.h @@ -3,6 +3,7 @@ #define _ASM_EARLY_IOREMAP_H_ #include <linux/types.h> +#include <linux/threads.h> /* x86 fixmap.h needs NR_CPUS */ #include <asm/fixmap.h> /* but really we should make those fixmap.h's standalone. > >> drivers/gpu/drm/i915/gem/i915_gem_object.h:39:6: error: shift count >= width of type [-Werror,-Wshift-count-overflow] > if (overflows_type(size, obj->base.size)) > ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/i915/i915_utils.h:125:32: note: expanded from macro 'overflows_type' > (sizeof(x) > sizeof(T) && (x) >> BITS_PER_TYPE(T)) Hopefully this is just fallout from the first error.
