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tg3: Fix race condition in tg3_get_stats64()
Spinlock should be taken before checking for tp->hw_stats. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 5 additions and 3 deletions
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@ -12524,10 +12524,12 @@ static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *dev,
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{
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struct tg3 *tp = netdev_priv(dev);
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if (!tp->hw_stats)
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return &tp->net_stats_prev;
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spin_lock_bh(&tp->lock);
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if (!tp->hw_stats) {
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spin_unlock_bh(&tp->lock);
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return &tp->net_stats_prev;
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}
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tg3_get_nstats(tp, stats);
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spin_unlock_bh(&tp->lock);
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