tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-kiwi-5.10 head: b0f8b9f7d23884213c86f388be625777f61fb769 commit: c2985e13ddc87258e98fad13e435129a210092b6 [8861/9999] UPSTREAM: ubsan: enable for all*config builds config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220224/202202242354.7zL85dQI-lkp@xxxxxxxxx/config) compiler: powerpc-linux-gcc (GCC) 11.2.0 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://github.com/ammarfaizi2/linux-block/commit/c2985e13ddc87258e98fad13e435129a210092b6 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-kiwi-5.10 git checkout c2985e13ddc87258e98fad13e435129a210092b6 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> kernel/kcov.c:296:14: warning: conflicting types for built-in function '__sanitizer_cov_trace_switch'; expected 'void(long long unsigned int, void *)' [-Wbuiltin-declaration-mismatch] 296 | void notrace __sanitizer_cov_trace_switch(u64 val, u64 *cases) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/linkage.h:7, from include/linux/kernel.h:8, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from arch/powerpc/include/asm/cmpxchg.h:8, from arch/powerpc/include/asm/atomic.h:11, from include/linux/atomic.h:7, from kernel/kcov.c:5: kernel/kcov.c:322:15: warning: conflicting types for built-in function '__sanitizer_cov_trace_switch'; expected 'void(long long unsigned int, void *)' [-Wbuiltin-declaration-mismatch] 322 | EXPORT_SYMBOL(__sanitizer_cov_trace_switch); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/export.h:125:28: note: in definition of macro '___EXPORT_SYMBOL' 125 | extern typeof(sym) sym; \ | ^~~ include/linux/export.h:187:41: note: in expansion of macro '__EXPORT_SYMBOL' 187 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "") | ^~~~~~~~~~~~~~~ include/linux/export.h:190:41: note: in expansion of macro '_EXPORT_SYMBOL' 190 | #define EXPORT_SYMBOL(sym) _EXPORT_SYMBOL(sym, "") | ^~~~~~~~~~~~~~ kernel/kcov.c:322:1: note: in expansion of macro 'EXPORT_SYMBOL' 322 | EXPORT_SYMBOL(__sanitizer_cov_trace_switch); | ^~~~~~~~~~~~~ vim +296 kernel/kcov.c ded97d2c2b2c5f Victor Chibotaru 2017-11-17 295 ded97d2c2b2c5f Victor Chibotaru 2017-11-17 @296 void notrace __sanitizer_cov_trace_switch(u64 val, u64 *cases) ded97d2c2b2c5f Victor Chibotaru 2017-11-17 297 { ded97d2c2b2c5f Victor Chibotaru 2017-11-17 298 u64 i; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 299 u64 count = cases[0]; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 300 u64 size = cases[1]; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 301 u64 type = KCOV_CMP_CONST; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 302 ded97d2c2b2c5f Victor Chibotaru 2017-11-17 303 switch (size) { ded97d2c2b2c5f Victor Chibotaru 2017-11-17 304 case 8: ded97d2c2b2c5f Victor Chibotaru 2017-11-17 305 type |= KCOV_CMP_SIZE(0); ded97d2c2b2c5f Victor Chibotaru 2017-11-17 306 break; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 307 case 16: ded97d2c2b2c5f Victor Chibotaru 2017-11-17 308 type |= KCOV_CMP_SIZE(1); ded97d2c2b2c5f Victor Chibotaru 2017-11-17 309 break; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 310 case 32: ded97d2c2b2c5f Victor Chibotaru 2017-11-17 311 type |= KCOV_CMP_SIZE(2); ded97d2c2b2c5f Victor Chibotaru 2017-11-17 312 break; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 313 case 64: ded97d2c2b2c5f Victor Chibotaru 2017-11-17 314 type |= KCOV_CMP_SIZE(3); ded97d2c2b2c5f Victor Chibotaru 2017-11-17 315 break; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 316 default: ded97d2c2b2c5f Victor Chibotaru 2017-11-17 317 return; ded97d2c2b2c5f Victor Chibotaru 2017-11-17 318 } ded97d2c2b2c5f Victor Chibotaru 2017-11-17 319 for (i = 0; i < count; i++) ded97d2c2b2c5f Victor Chibotaru 2017-11-17 320 write_comp_data(type, cases[i + 2], val, _RET_IP_); ded97d2c2b2c5f Victor Chibotaru 2017-11-17 321 } ded97d2c2b2c5f Victor Chibotaru 2017-11-17 322 EXPORT_SYMBOL(__sanitizer_cov_trace_switch); ded97d2c2b2c5f Victor Chibotaru 2017-11-17 323 #endif /* ifdef CONFIG_KCOV_ENABLE_COMPARISONS */ ded97d2c2b2c5f Victor Chibotaru 2017-11-17 324 :::::: The code at line 296 was first introduced by commit :::::: ded97d2c2b2c5f1dcced0bc57133f7753b037dfc kcov: support comparison operands collection :::::: TO: Victor Chibotaru <tchibo@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
