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-rw-r--r--kernel/futex.c5
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