提交 3041f517 编写于 作者: E Eric Dumazet 提交者: David S. Miller

net: Fix dev_mc_add()

Commit 6e17d45a (net: add addr len check to dev_mc_add)
added a bug in dev_mc_add(), since it can now exit with a lock
imbalance.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
CC: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 0a141509
......@@ -97,8 +97,9 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
netif_addr_lock_bh(dev);
if (alen != dev->addr_len)
return -EINVAL;
err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
err = -EINVAL;
else
err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
if (!err)
__dev_set_rx_mode(dev);
netif_addr_unlock_bh(dev);
......
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