tree: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features head: 0b45bc53cb188daba69a02725967af8ace276c60 commit: 0b45bc53cb188daba69a02725967af8ace276c60 [19/19] s390/kexec: fix crash on resize of reserved memory config: s390-zfcpdump_defconfig (attached as .config) compiler: s390x-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 0b45bc53cb188daba69a02725967af8ace276c60 # save the attached .config to linux build tree make.cross ARCH=s390 Note: the s390/features HEAD 0b45bc53cb188daba69a02725967af8ace276c60 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): arch/s390/kernel/machine_kexec.c: In function 'crash_protect_pages': >> arch/s390/kernel/machine_kexec.c:172:3: error: implicit declaration of function 'set_memory_ro' [-Werror=implicit-function-declaration] set_memory_ro(crashk_res.start, size >> PAGE_SHIFT); ^ >> arch/s390/kernel/machine_kexec.c:174:3: error: implicit declaration of function 'set_memory_rw' [-Werror=implicit-function-declaration] set_memory_rw(crashk_res.start, size >> PAGE_SHIFT); ^ cc1: some warnings being treated as errors vim +/set_memory_ro +172 arch/s390/kernel/machine_kexec.c 166 unsigned long size; 167 168 if (!crashk_res.end) 169 return; 170 size = resource_size(&crashk_res); 171 if (protect) > 172 set_memory_ro(crashk_res.start, size >> PAGE_SHIFT); 173 else > 174 set_memory_rw(crashk_res.start, size >> PAGE_SHIFT); 175 } 176 177 void arch_kexec_protect_crashkres(void) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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