tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: fd3ecedb365cc7c80040ad7c030a60b420a85711 commit: e58a41c2226847fb1446f3942dc1b55af8acfe02 [14776/15760] csky: uaccess.h: Coding convention with asm generic config: csky-randconfig-r005-20210503 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e58a41c2226847fb1446f3942dc1b55af8acfe02 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 e58a41c2226847fb1446f3942dc1b55af8acfe02 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=csky If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/huge_mm.h:8, from include/linux/mm.h:707, from include/linux/mman.h:5, from lib/test_user_copy.c:13: arch/csky/include/asm/uaccess.h: In function '__get_user_fn.constprop': >> arch/csky/include/asm/uaccess.h:158:2: warning: 'retval' is used uninitialized in this function [-Wuninitialized] 158 | __asm__ __volatile__( \ | ^~~~~~~ arch/csky/include/asm/uaccess.h:181:6: note: 'retval' was declared here 181 | int retval; | ^~~~~~ 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 +/retval +158 arch/csky/include/asm/uaccess.h 152 153 #define __get_user_asm_64(x, ptr, err) \ 154 do { \ 155 int tmp; \ 156 int errcode; \ 157 \ > 158 __asm__ __volatile__( \ 159 "1: ldw %3, (%2, 0) \n" \ 160 " stw %3, (%1, 0) \n" \ 161 "2: ldw %3, (%2, 4) \n" \ 162 " stw %3, (%1, 4) \n" \ 163 " br 4f \n" \ 164 "3: mov %0, %4 \n" \ 165 " br 4f \n" \ 166 ".section __ex_table, \"a\" \n" \ 167 ".align 2 \n" \ 168 ".long 1b, 3b \n" \ 169 ".long 2b, 3b \n" \ 170 ".previous \n" \ 171 "4: \n" \ 172 : "=r"(err), "=r"(x), "=r"(ptr), \ 173 "=r"(tmp), "=r"(errcode) \ 174 : "0"(err), "1"(x), "2"(ptr), "3"(0), \ 175 "4"(-EFAULT) \ 176 : "memory"); \ 177 } while (0) 178 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
