[PATCH] mm/gup: Fix memory leak in __gup_benchmark_ioctl

[Navid Emamdoost <navid.emamdoost@xxxxxxxxx>]

In the implementation of __gup_benchmark_ioctl() the allocated pages
should be released before returning in case of an invalid cmd. Release
pages via kvfree().

Fixes: 714a3a1ebafe ("mm/gup_benchmark.c: add additional pinning methods")
Signed-off-by: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>
---
 mm/gup_benchmark.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/gup_benchmark.c b/mm/gup_benchmark.c
index 7dd602d7f8db..b160638f647e 100644
--- a/mm/gup_benchmark.c
+++ b/mm/gup_benchmark.c
@@ -63,6 +63,7 @@ static int __gup_benchmark_ioctl(unsigned int cmd,
 					    NULL);
 			break;
 		default:
+			kvfree(pages);
 			return -1;
 		}
 
-- 
2.17.1