tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 423b8baf18a8c03f2d6fa99aa447ed0da189bb95 commit: 793b08e2efff3ec020c5c5861d00ed394fcdd488 powerpc/kexec: Move kexec files into a dedicated subdir. date: 6 months ago config: powerpc-randconfig-s001-20200524 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty git checkout 793b08e2efff3ec020c5c5861d00ed394fcdd488 # save the attached .config to linux build tree make W=1 C=1 ARCH=powerpc CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +156 arch/powerpc/kexec/ima.c ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 147 ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 148 static int write_number(void *p, u64 value, int cells) ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 149 { ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 150 if (cells == 1) { ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 151 u32 tmp; ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 152 ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 153 if (value > U32_MAX) ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 154 return -EINVAL; ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 155 ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 @156 tmp = cpu_to_be32(value); ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 157 memcpy(p, &tmp, sizeof(tmp)); ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 158 } else if (cells == 2) { ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 159 u64 tmp; ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 160 ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 @161 tmp = cpu_to_be64(value); ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 162 memcpy(p, &tmp, sizeof(tmp)); ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 163 } else ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 164 return -EINVAL; ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 165 ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 166 return 0; ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 167 } ab6b1d1fc4aae6 arch/powerpc/kernel/ima_kexec.c Thiago Jung Bauermann 2016-12-19 168 :::::: The code at line 156 was first introduced by commit :::::: ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f powerpc: ima: send the kexec buffer to the next kernel :::::: TO: Thiago Jung Bauermann <bauerman(a)linux.vnet.ibm.com&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org