1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 8b8285310b5..16fb3c1615d 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/mm/gup.c
@@ -229,7 +229,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
         addr = start;
         len = (unsigned long) nr_pages << PAGE_SHIFT;
         end = start + len;
-        if (end < start)
+        if ((end < start) || (end > TASK_SIZE))
                 goto slow_irqon;
 
         /*