thanks mataness

171c2cc6 · Frans Kaashoek · 26108a3b · 171c2cc6
--- a/vm.c
+++ b/vm.c
@@ -332,8 +332,10 @@ copyuvm(pde_t *pgdir, uint sz)
    if((mem = kalloc()) == 0)
      goto bad;
    memmove(mem, (char*)P2V(pa), PGSIZE);
-    if(mappages(d, (void*)i, PGSIZE, V2P(mem), flags) < 0)
+    if(mappages(d, (void*)i, PGSIZE, V2P(mem), flags) < 0) {
+      kfree(mem);
      goto bad;
+    }
  }
  return d;