pkt_sched: Fix locking in shutdown_scheduler_queue()

Qdisc locks need to be held with BH disabled.

Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 4ac7e3a8c253..43abd4d27ea6 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -736,9 +736,9 @@ static void shutdown_scheduler_queue(struct net_device *dev,
                 dev_queue->qdisc = qdisc_default;
                 dev_queue->qdisc_sleeping = qdisc_default;
 
-                spin_lock(root_lock);
+                spin_lock_bh(root_lock);
                 qdisc_destroy(qdisc);
-                spin_unlock(root_lock);
+                spin_unlock_bh(root_lock);
         }
 }