1 files changed, 10 insertions, 1 deletions

diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 869efbaed3e..5578740ab9c 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -30,6 +30,15 @@
 #include <asm/pgalloc.h>
 #include <asm/compat.h>
 
+static unsigned long stack_maxrandom_size(void)
+{
+        if (!(current->flags & PF_RANDOMIZE))
+                return 0;
+        if (current->personality & ADDR_NO_RANDOMIZE)
+                return 0;
+        return STACK_RND_MASK << PAGE_SHIFT;
+}
+
 /*
  * Top of mmap area (just below the process stack).
  *
@@ -47,7 +56,7 @@ static inline unsigned long mmap_base(void)
         else if (gap > MAX_GAP)
                 gap = MAX_GAP;
 
-        return STACK_TOP - (gap & PAGE_MASK);
+        return STACK_TOP - stack_maxrandom_size() - (gap & PAGE_MASK);
 }
 
 static inline int mmap_is_legacy(void)