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netlink: Reset portid after netlink_insert failure 

The commit c5adde9468 ("netlink:
eliminate nl_sk_hash_lock") breaks the autobind retry mechanism
because it doesn't reset portid after a failed netlink_insert.

This means that should autobind fail the first time around, then
the socket will be stuck in limbo as it can never be bound again
since it already has a non-zero portid.

Fixes: c5adde9468 ("netlink: eliminate nl_sk_hash_lock")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2015-05-16 21:50:28 +08:00 committed by David S. Miller
parent 1d6057019e
commit c0bb07df7d
1 changed files with 1 additions and 0 deletions
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net/netlink/af_netlink.c
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@ -1081,6 +1081,7 @@ static int netlink_insert(struct sock *sk, u32 portid)
if (err) {
if (err == -EEXIST)
err = -EADDRINUSE;
nlk_sk(sk)->portid = 0;
sock_put(sk);
}