X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=UefiCpuPkg%2FPiSmmCpuDxeSmm%2FMpService.c;h=4ac5e8e26462b146919047a61c6767e3e377585e;hp=e03f1e02c015e2fb872c2f83140abf6cffbb0c51;hb=b7025df8f9102a1698879aa451bf5af592c37bc1;hpb=170a3c1e0fff7de43501ef851b4ad5cbe355e220

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index e03f1e02c0..4ac5e8e264 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -860,6 +860,9 @@ InternalSmmStartupThisAp (
     DEBUG((DEBUG_ERROR, "CpuIndex(%d) == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu\n", CpuIndex));
     return EFI_INVALID_PARAMETER;
   }
+  if (gSmmCpuPrivate->ProcessorInfo[CpuIndex].ProcessorId == INVALID_APIC_ID) {
+    return EFI_INVALID_PARAMETER;
+  }
   if (!(*(mSmmMpSyncData->CpuData[CpuIndex].Present))) {
     if (mSmmMpSyncData->EffectiveSyncMode == SmmCpuSyncModeTradition) {
       DEBUG((DEBUG_ERROR, "!mSmmMpSyncData->CpuData[%d].Present\n", CpuIndex));