Hello Hannes,

On Wed, Dec 02, 2015 at 12:40:32PM +0100, Hannes Frederic Sowa wrote:
> > 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);

Didn't help, test program still gets stuck; sorry :-(

Philipp

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/____/_/_//_/\_,_/ /_/\_\ pmh...@pmhahn.de
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