net: Fix skb_update_prio RCU usage.
Change function rcu_dereference to rcu_dereference_bh to avoid warning [ INFO: suspicious RCU usage. ] ------------------------------- net/core/dev.c:2459 suspicious rcu_dereference_check() usage! because we are locking with rcu_read_lock_bh(); in function dev_queue_xmit(struct sk_buff *skb) Signed-off-by: Igor Maravic <igorm@etf.rs> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -2473,7 +2473,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
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#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
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#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
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static void skb_update_prio(struct sk_buff *skb)
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static void skb_update_prio(struct sk_buff *skb)
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{
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{
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struct netprio_map *map = rcu_dereference(skb->dev->priomap);
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struct netprio_map *map = rcu_dereference_bh(skb->dev->priomap);
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if ((!skb->priority) && (skb->sk) && map)
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if ((!skb->priority) && (skb->sk) && map)
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skb->priority = map->priomap[skb->sk->sk_cgrp_prioidx];
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skb->priority = map->priomap[skb->sk->sk_cgrp_prioidx];
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