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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-03-09 19:09:08 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-10 07:32:28 -0800 |
| commit | 3041f5170751e3522aa1bd6e8ca5d98e846720b0 (patch) | |
| tree | f692b5193501ff8d3f6895321f936895980e6761 | |
| parent | 0a141509ede48ac33ef756ac1640f4d3f46fa2db (diff) | |
| download | linux-3041f5170751e3522aa1bd6e8ca5d98e846720b0.tar.gz | |
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: Eric Dumazet <eric.dumazet@gmail.com> CC: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/dev_mcast.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c index fd91569e2394..3dc295beb483 100644 --- a/net/core/dev_mcast.c +++ b/net/core/dev_mcast.c @@ -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); |