tree: https://github.com/0day-ci/linux/commits/UPDATE-20200613-235004/Borislav-... head: 24611fae296234f2f3d5e95062d44390a482887b commit: 24611fae296234f2f3d5e95062d44390a482887b [1/1] x86/msr: Filter MSR writes config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project d7e6f116f4517952fbdf5ad4b5ff67e378600c60) 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 git checkout 24611fae296234f2f3d5e95062d44390a482887b # 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(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): error: fallthrough annotation does not directly precede switch label char *s = strstrip(val); ^~~ include/linux/string.h:76:49: note: passing argument to parameter 'str' here static inline __must_check char *strstrip(char *str) ^ 2 errors generated. vim +281 arch/x86/kernel/msr.c 278 279 static int set_allow_writes(const char *val, const struct kernel_param *cp) 280 { 282 283 if (!strcmp(s, "on")) 284 allow_writes = MSR_WRITES_ON; 285 else if (!strcmp(s, "off")) 286 allow_writes = MSR_WRITES_OFF; 287 else 288 allow_writes = MSR_WRITES_DEFAULT; 289 290 return 0; 291 } 292 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org