From: Eric Dumazet edumazet@google.com
[ Upstream commit f98ebd47fd0da1717267ce1583a105d8cc29a16a ]
While noop_qdisc.gso_skb and noop_qdisc.skb_bad_txq are not used in other places, it seems not correct to overwrite their fields in dev_init_scheduler_queue().
noop_qdisc is essentially a shared and read-only object, even if it is not marked as const because of some implementation detail.
Signed-off-by: Eric Dumazet edumazet@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/sched/sch_generic.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 30e32df5f84a7..8a4d01e427a22 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -577,6 +577,18 @@ struct Qdisc noop_qdisc = { .dev_queue = &noop_netdev_queue, .running = SEQCNT_ZERO(noop_qdisc.running), .busylock = __SPIN_LOCK_UNLOCKED(noop_qdisc.busylock), + .gso_skb = { + .next = (struct sk_buff *)&noop_qdisc.gso_skb, + .prev = (struct sk_buff *)&noop_qdisc.gso_skb, + .qlen = 0, + .lock = __SPIN_LOCK_UNLOCKED(noop_qdisc.gso_skb.lock), + }, + .skb_bad_txq = { + .next = (struct sk_buff *)&noop_qdisc.skb_bad_txq, + .prev = (struct sk_buff *)&noop_qdisc.skb_bad_txq, + .qlen = 0, + .lock = __SPIN_LOCK_UNLOCKED(noop_qdisc.skb_bad_txq.lock), + }, }; EXPORT_SYMBOL(noop_qdisc);
@@ -1253,8 +1265,6 @@ static void dev_init_scheduler_queue(struct net_device *dev,
rcu_assign_pointer(dev_queue->qdisc, qdisc); dev_queue->qdisc_sleeping = qdisc; - __skb_queue_head_init(&qdisc->gso_skb); - __skb_queue_head_init(&qdisc->skb_bad_txq); }
void dev_init_scheduler(struct net_device *dev)