A panic if num CPUs if > NCPU

3bb8907f · Silas Boyd-Wickizer · dffa3cb3 · 3bb8907f
--- a/kernel/mp.cc
+++ b/kernel/mp.cc
@@ -111,6 +111,8 @@ initmp(void)
    switch(*p){
    case MPPROC:
      proc = (struct mpproc*)p;
+      if (ncpu == NCPU)
+        panic("initmp: too many CPUs");
      if(ncpu != proc->apicid){
        cprintf("mpinit: ncpu=%d apicid=%d\n", ncpu, proc->apicid);
        ismp = 0;