diff --git a/[refs] b/[refs]
index 4f46e6a77177..0c22d83cfe29 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 63a809a2dc53b91268dd915bbcbd425063893676
+refs/heads/master: 585e3374d9d29376c2c37d821c8b7637dd48ca95
diff --git a/trunk/Documentation/perf_counter/perf-report.cc b/trunk/Documentation/perf_counter/perf-report.cc
index 933a07544534..911d7f3e7a65 100644
--- a/trunk/Documentation/perf_counter/perf-report.cc
+++ b/trunk/Documentation/perf_counter/perf-report.cc
@@ -402,6 +402,11 @@ int main(int argc, char *argv[])
 		exit(-1);
 	}
 
+	if (!stat.st_size) {
+		fprintf(stderr, "zero-sized file, nothing to do!\n");
+		exit(0);
+	}
+
 	load_kallsyms();
 
 remap: