diff --git a/[refs] b/[refs]
index 65c0770193e7..6e23796ca737 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9b8327bb2483ded5e04df6c33cf339ce7c02f6e9
+refs/heads/master: ed6c1115c835d822ec5d6356ae3043de54088f43
diff --git a/trunk/mm/percpu-km.c b/trunk/mm/percpu-km.c
index 7037bc73bfa4..89633fefc6a2 100644
--- a/trunk/mm/percpu-km.c
+++ b/trunk/mm/percpu-km.c
@@ -35,7 +35,11 @@
 
 static int pcpu_populate_chunk(struct pcpu_chunk *chunk, int off, int size)
 {
-	/* noop */
+	unsigned int cpu;
+
+	for_each_possible_cpu(cpu)
+		memset((void *)pcpu_chunk_addr(chunk, cpu, 0) + off, 0, size);
+
 	return 0;
 }