Don't junk kfree'd pages at boot

e1f31a94 · Silas Boyd-Wickizer · fd939840 · e1f31a94
--- a/kalloc.c
+++ b/kalloc.c
@@ -65,7 +65,8 @@ kfree(char *v)
    panic("kfree");

  // Fill with junk to catch dangling refs.
-  memset(v, 1, PGSIZE);
+  if (kinited)
+    memset(v, 1, PGSIZE);

  struct kmem *m = kmem;
  acquire(&m->lock);