rds: Lost locking in loop connection freeing

The conn is removed from list in there and this requires
proper lock protection.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/rds/loop.c b/net/rds/loop.c
index c390156b426f..aeec1d483b17 100644
--- a/net/rds/loop.c
+++ b/net/rds/loop.c
@@ -134,8 +134,12 @@ static int rds_loop_conn_alloc(struct rds_connection *conn, gfp_t gfp)
 static void rds_loop_conn_free(void *arg)
 {
         struct rds_loop_connection *lc = arg;
+        unsigned long flags;
+
         rdsdebug("lc %p\n", lc);
+        spin_lock_irqsave(&loop_conns_lock, flags);
         list_del(&lc->loop_node);
+        spin_unlock_irqrestore(&loop_conns_lock, flags);
         kfree(lc);
 }