Move mtrace_label_register to after oom check.

eda2be67 · Silas Boyd-Wickizer · 98ae7c9c · eda2be67
--- a/kalloc.c
+++ b/kalloc.c
@@ -101,6 +101,11 @@ kalloc(void)
    release(&m->lock);
  }

+  if (r == 0) {
+    kmemprint();
+    panic("out of memory");
+  }
+
  mtrace_label_register(mtrace_label_block,
 			r,
 			4096,
@@ -108,10 +113,6 @@ kalloc(void)
 			sizeof("kalloc"),
 			RET_EIP());

-  if (r == 0) {
-    kmemprint();
-    panic("out of memory");
-  }
  memset(r, 2, PGSIZE);
  return (char*)r;
 }