tree: https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux.git oprofile head: 2fbea8024e6acb128f2dbf6c38b1903c618adf28 commit: 368517e1574b34681f6a2d5115b1a35712557aac [9/16] arch: powerpc: Remove CONFIG_OPROFILE support config: powerpc-allmodconfig (attached as .config) compiler: powerpc64-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/vireshk/linux.git/commit/... git remote add vireshk2 https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux.git git fetch --no-tags vireshk2 oprofile git checkout 368517e1574b34681f6a2d5115b1a35712557aac # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): arch/powerpc/platforms/cell/spufs/run.c: In function 'spufs_run_spu': 356 | struct spu *spu; | ^~~ vim +/spu +356 arch/powerpc/platforms/cell/spufs/run.c 2dd14934c9138c56 Arnd Bergmann 2006-03-23 352 50af32a94beef566 Jeremy Kerr 2007-07-20 353 long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event) ce8ab8541203f6c7 Arnd Bergmann 2006-01-04 354 { ce8ab8541203f6c7 Arnd Bergmann 2006-01-04 355 int ret; 36aaccc1e96481e8 Bob Nelson 2007-07-20 @356 struct spu *spu; :::::: The code at line 356 was first introduced by commit :::::: 36aaccc1e96481e8310b1d13600096da0f24ff43 [CELL] oprofile: enable SPU switch notification to detect currently active SPU tasks :::::: TO: Bob Nelson <rrnelson(a)linux.vnet.ibm.com&gt; :::::: CC: Arnd Bergmann <arnd(a)klappe.arndb.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org