1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index 67dacaf93e56..6801b3751a95 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1452,6 +1452,7 @@ retry:
         hb2 = hash_futex(&key2);
 
 retry_private:
+        hb_waiters_inc(hb2);
         double_lock_hb(hb1, hb2);
 
         if (likely(cmpval != NULL)) {
@@ -1461,6 +1462,7 @@ retry_private:
 
                 if (unlikely(ret)) {
                         double_unlock_hb(hb1, hb2);
+                        hb_waiters_dec(hb2);
 
                         ret = get_user(curval, uaddr1);
                         if (ret)
@@ -1510,6 +1512,7 @@ retry_private:
                         break;
                 case -EFAULT:
                         double_unlock_hb(hb1, hb2);
+                        hb_waiters_dec(hb2);
                         put_futex_key(&key2);
                         put_futex_key(&key1);
                         ret = fault_in_user_writeable(uaddr2);
@@ -1519,6 +1522,7 @@ retry_private:
                 case -EAGAIN:
                         /* The owner was exiting, try again. */
                         double_unlock_hb(hb1, hb2);
+                        hb_waiters_dec(hb2);
                         put_futex_key(&key2);
                         put_futex_key(&key1);
                         cond_resched();
@@ -1594,6 +1598,7 @@ retry_private:
 
 out_unlock:
         double_unlock_hb(hb1, hb2);
+        hb_waiters_dec(hb2);
 
         /*
          * drop_futex_key_refs() must be called outside the spinlocks. During