tree: https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git sev-es-client-tip-5.9 head: 7e2e0f5fb47e16dec0e6b81ce2ee36abb4c28eb9 commit: c62ca8accbdb20911865b9454ecf1e5e0ce91bae [43/76] x86/sev-es: Setup GHCB based boot #VC handler config: x86_64-randconfig-m001-20200818 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; New smatch warnings: arch/x86/kernel/sev-es.c:239 handle_vc_boot_ghcb() error: we previously assumed 'boot_ghcb' could be null (see line 236) Old smatch warnings: arch/x86/kernel/sev-es-shared.c:267 vc_ioio_exitinfo() warn: should 'insn->immediate.value << 16' be a 64 bit type? arch/x86/kernel/sev-es-shared.c:274 vc_ioio_exitinfo() warn: should 'insn->immediate.value << 16' be a 64 bit type? # https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/commit/?id... git remote add joro https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git git fetch --no-tags joro sev-es-client-tip-5.9 git checkout c62ca8accbdb20911865b9454ecf1e5e0ce91bae vim +/boot_ghcb +239 arch/x86/kernel/sev-es.c 228 229 bool __init handle_vc_boot_ghcb(struct pt_regs *regs) 230 { 231 unsigned long exit_code = regs->orig_ax; 232 struct es_em_ctxt ctxt; 233 enum es_result result; 234 235 /* Do initial setup or terminate the guest */ 237 sev_es_terminate(GHCB_SEV_ES_REASON_GENERAL_REQUEST); 238 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org