[PATCH 3/3] perf: Check for valid dso before creating map

[Srikar Dronamraju <srikar@linux.vnet.ibm.com>]

From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>

dso__new() can return NULL. Hence verify dso before creating
a new map.

Suggested-by: Arnaldo Carvalho de Melo <acme@infradead.org>
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
---
 tools/perf/util/symbol.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index e2ba885..0ef529e 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2786,8 +2786,11 @@ int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
 
 struct map *dso__new_map(const char *name)
 {
+	struct map *map = NULL;
 	struct dso *dso = dso__new(name);
-	struct map *map = map__new2(0, dso, MAP__FUNCTION);
+
+	if (dso)
+		map = map__new2(0, dso, MAP__FUNCTION);
 
 	return map;
 }