futex: fix futex_wait_setup key handling

If the get_futex_key() call were to fail, the existing code would
try and put_futex_key() prior to returning.  This patch makes sure
we only put_futex_key() if get_futex_key() succeeded.

Reported-by: Clark Williams <williams@redhat.com>
Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
LKML-Reference: <20090410165005.14342.16973.stgit@Aeon>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index 041bf3ac4be9..6d2daa46f9ff 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1668,7 +1668,7 @@ retry:
         q->key = FUTEX_KEY_INIT;
         ret = get_futex_key(uaddr, fshared, &q->key);
         if (unlikely(ret != 0))
-                goto out;
+                return ret;
 
 retry_private:
         *hb = queue_lock(q);