diff --git a/kernel/profile.c b/kernel/profile.c
index 66f841b..14c9f87 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -126,11 +126,9 @@
 	if (prof_buffer)
 		return 0;
 
-	prof_buffer = vmalloc(buffer_bytes);
-	if (prof_buffer) {
-		memset(prof_buffer, 0, buffer_bytes);
+	prof_buffer = vzalloc(buffer_bytes);
+	if (prof_buffer)
 		return 0;
-	}
 
 	free_cpumask_var(prof_cpu_mask);
 	return -ENOMEM;
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 252b72a..6635fcd 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -42,7 +42,7 @@
 	int i;
 
 	for (i = 0; i < 64; i++) {
-		if (mask & (1UL << i))
+		if (mask & (1ULL << i))
 			size++;
 	}