Commit 0f566b20 authored by Michael Chan's avatar Michael Chan Committed by David S. Miller

tg3: Fix race condition in tg3_get_stats64()

Spinlock should be taken before checking for tp->hw_stats.
Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 091f0ea3
......@@ -12524,10 +12524,12 @@ static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *dev,
{
struct tg3 *tp = netdev_priv(dev);
if (!tp->hw_stats)
spin_lock_bh(&tp->lock);
if (!tp->hw_stats) {
spin_unlock_bh(&tp->lock);
return &tp->net_stats_prev;
}
spin_lock_bh(&tp->lock);
tg3_get_nstats(tp, stats);
spin_unlock_bh(&tp->lock);
......
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