tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 9e5cff2a1315fec1da1f497714395670366506b6 commit: 48ff079b28d82dbce000cc45c0fd35b6ae9ffbda [13374/15421] drm/amdkfd: HMM migrate vram to ram config: x86_64-randconfig-a011-20210429 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9131a078901b00e68248a27a4f8c4b11bb1db1ae) 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=48ff079b28d82dbce000cc45c0fd35b6ae9ffbda 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 48ff079b28d82dbce000cc45c0fd35b6ae9ffbda # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:284:6: warning: no previous prototype for function 'svm_migrate_put_sys_page' [-Wmissing-prototypes] void svm_migrate_put_sys_page(unsigned long addr) ^ drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:284:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void svm_migrate_put_sys_page(unsigned long addr) ^ static drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:513:29: warning: variable 'mm' is uninitialized when used here [-Wuninitialized] svm_range_prefault(prange, mm); ^~ drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:494:22: note: initialize the variable 'mm' to silence this warning struct mm_struct *mm; ^ = NULL 2 warnings generated. vim +/svm_migrate_put_sys_page +284 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c 283 > 284 void svm_migrate_put_sys_page(unsigned long addr) 285 { 286 struct page *page; 287 288 page = pfn_to_page(addr >> PAGE_SHIFT); 289 unlock_page(page); 290 put_page(page); 291 } 292 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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