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Hi Julian
On Monday, October 03, 2011 22:55:02 Julian Anastasov wrote:
>
> Hello,
>
> On Mon, 3 Oct 2011, Hans Schillstrom wrote:
>
> > From: Hans Schillstrom <hans@xxxxxxxxxxxxxxx>
> >
> > ip_vs_mutext is used by both netns shutdown code and startup
> > and both implicit uses sk_lock-AF_INET mutex.
> >
> > cleanup CPU-1 startup CPU-2
> > ip_vs_dst_event() ip_vs_genl_set_cmd()
> > sk_lock-AF_INET __ip_vs_mutex
> > sk_lock-AF_INET
> > __ip_vs_mutex
> > * DEAD LOCK *
> >
> > A new mutex placed in ip_vs netns struct called sync_mutex is added.
> >
> > Comments from Julian and Simon added.
> > This patch has been running for more than 3 month now and it seems to work.
>
> May be IP_VS_SO_GET_DAEMON in do_ip_vs_get_ctl
> must be protected by sync_mutex in a similar way.
>
That's right there is a small risk inconsistent data there...
I will send a new patch tomorrow.
Thanks
Hans
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