1 files changed, 1 insertions, 0 deletions

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 5e7eea2dc8b4..78b18a60b9b2 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1750,6 +1750,7 @@ static struct sp_node *sp_alloc(unsigned long start, unsigned long end,
         n->start = start;
         n->end = end;
         mpol_get(pol);
+        pol->flags |= MPOL_F_SHARED;    /* for unref */
         n->policy = pol;
         return n;
 }