1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index cdf365036141..b687cb22301c 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -338,7 +338,7 @@ static inline bool should_fail_futex(bool fshared)
 
 static inline void futex_get_mm(union futex_key *key)
 {
-        atomic_inc(&key->private.mm->mm_count);
+        mmgrab(key->private.mm);
         /*
          * Ensure futex_get_mm() implies a full barrier such that
          * get_futex_key() implies a full barrier. This is relied upon