tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   896e6c5ee0c0ead9790f7ac202a672132bacbf66
commit: 7b6550d180d48e250049759362b5cc2cf02544c9 [342/391] powerpc: use memblock functions returning virtual address
config: powerpc-allnoconfig (attached as .config)
compiler: powerpc-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 7b6550d180d48e250049759362b5cc2cf02544c9
        # save the attached .config to linux build tree
        GCC_VERSION=8.2.0 make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

>> arch/powerpc/kernel/setup_32.c:176:21: error: redefinition of 'alloc_stack'
    static void *__init alloc_stack(void)
                        ^~~~~~~~~~~
   arch/powerpc/kernel/setup_32.c:165:21: note: previous definition of 'alloc_stack' was here
    static void *__init alloc_stack(void)
                        ^~~~~~~~~~~
>> arch/powerpc/kernel/setup_32.c:165:21: error: 'alloc_stack' defined but not used [-Werror=unused-function]
   cc1: all warnings being treated as errors

vim +/alloc_stack +176 arch/powerpc/kernel/setup_32.c

   164	
 > 165	static void *__init alloc_stack(void)
   166	{
   167		void *ptr = memblock_alloc(THREAD_SIZE, THREAD_SIZE);
   168	
   169		if (!ptr)
   170			panic("cannot allocate %d bytes for stack at %pS\n",
   171			      THREAD_SIZE, (void *)_RET_IP_);
   172	
   173		return ptr;
   174	}
   175	
 > 176	static void *__init alloc_stack(void)
   177	{
   178		void *ptr = memblock_alloc(THREAD_SIZE, THREAD_SIZE);
   179	
   180		if (!ptr)
   181			panic("cannot allocate %d bytes for stack at %pS\n",
   182			      THREAD_SIZE, (void *)_RET_IP_);
   183	
   184		return ptr;
   185	}
   186	

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0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation