diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index ed558191c0b3030ec9b7b259c9f12eaf8aa78041..4af6b279e34a94881da3e838ff41f407aeb0cbfc 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -558,13 +558,17 @@ int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
 	struct map *map;
 	struct kmap *kmap;
 	int err;
+	union perf_event *event;
+
+	if (machine->vmlinux_maps[0] == NULL)
+		return -1;
+
 	/*
 	 * We should get this from /sys/kernel/sections/.text, but till that is
 	 * available use this, and after it is use this as a fallback for older
 	 * kernels.
 	 */
-	union perf_event *event = zalloc((sizeof(event->mmap) +
-					  machine->id_hdr_size));
+	event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
 	if (event == NULL) {
 		pr_debug("Not enough memory synthesizing mmap event "
 			 "for kernel modules\n");
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 6d2d50dea1d8114a734d461278e8009652a53b74..883406f4b381c5ebf6d49de5cb4f40f7c5bdeeae 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -119,7 +119,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
 		 * kernel MMAP event, in perf_event__process_mmap().
 		 */
 		if (perf_session__create_kernel_maps(session) < 0)
-			goto out_delete;
+			pr_warning("Cannot read kernel map\n");
 	}
 
 	if (tool && tool->ordering_requires_timestamps &&