netdev - Re: ipvs oops in 3.0-rc7

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Date:	Thu, 21 Jul 2011 10:26:57 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Huajun Li <huajun.li.lee@...il.com>
Cc:	Simon Horman <horms@...ge.net.au>, netdev <netdev@...r.kernel.org>,
	lvs-devel@...r.kernel.org, Wensong Zhang <wensong@...ux-vs.org>,
	Julian Anastasov <ja@....bg>
Subject: Re: ipvs oops in 3.0-rc7

On Thu, 21 Jul 2011 16:42:17 +0800 Huajun Li wrote:

> Hi Randy and Simon,
>     I happened to meet the issue too, loading and unloading module of
> ip_vs, then loading it again will cause Oops, the root cause may be
> ip_vs_dst_notifier is not unregistered. Please try following patch, it
> works for me.
> 
> 
> Signed-off-by: Huajun Li <huajun.li.lee@...il.com>
> ---
>  net/netfilter/ipvs/ip_vs_ctl.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
> index 699c79a..a178cb3 100644
> --- a/net/netfilter/ipvs/ip_vs_ctl.c
> +++ b/net/netfilter/ipvs/ip_vs_ctl.c
> @@ -3771,6 +3771,7 @@ err_sock:
>  void ip_vs_control_cleanup(void)
>  {
>  	EnterFunction(2);
> +	unregister_netdevice_notifier(&ip_vs_dst_notifier);
>  	ip_vs_genl_unregister();
>  	nf_unregister_sockopt(&ip_vs_sockopts);
>  	LeaveFunction(2);
> -- 

Yes, this patch or the one here:  http://www.spinics.net/lists/lvs-devel/msg02051.html

works.  Thanks.

Reported-by: Randy Dunlap <rdunlap@...otime.net>
Acked-by: Randy Dunlap <rdunlap@...otime.net>


> 2011/7/21 Simon Horman <horms@...ge.net.au>:
> > On Wed, Jul 20, 2011 at 08:50:19PM -0700, Randy Dunlap wrote:
> >> I'm seeing the following Oops in 3.0-rc7 on x86_64, just loading and unloading
> >> modules.  Any chance this is already fixed?  I can test current git, but I
> >> wanted to ask first.
> >>
> >> Looks like it is on the second module load of ip_vs (i.e.,
> >> modprobe ip_vs; rmmod ip_vs; modprobe ip_vs).
> >
> > Hi Randy,
> >
> > I don't believe that this problem has been resolved (or observed before).



---
~Randy
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