Hello Stefan,
Stefan Priebe - Profihost AG <s.pri...@profihost.ag> writes:
> here are the results.
>
> It works with 4.1.
> It works with 4.2.
> It does not work with 4.1.13.
>
> git bisect tells me it stopped working after those two commits were applied:
>
> commit d48623677191e0f035d7afd344f92cf880b01f8e
> Author: Herbert Xu <herb...@gondor.apana.org.au>
> Date: Tue Sep 22 11:38:56 2015 +0800
>
> netlink: Replace rhash_portid with bound
>
> commit 4e27762417669cb459971635be550eb7b5598286
> Author: Herbert Xu <herb...@gondor.apana.org.au>
> Date: Fri Sep 18 19:16:50 2015 +0800
>
> netlink: Fix autobind race condition that leads to zero port ID
Cool, thanks a lot. Does this patch make a difference?
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 59651af..278e94c 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1137,7 +1137,7 @@ static int netlink_insert(struct sock *sk, u32 portid)
/* We need to ensure that the socket is hashed and visible. */
smp_wmb();
- nlk_sk(sk)->bound = portid;
+ nlk_sk(sk)->bound = true;
err:
release_sock(sk);
--
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