Subject: Re: kernel stack trace using conntrack

From: Patrick McHardy <[email-masked]>
Date: Thu, 18 Feb 2010 11:34:54 +0100

Ramblewski David wrote:
> Hi Eric,
> 
> The conntrack patch works successfully.
> 
>>> diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
>>> index 0ffe689..d2657aa 100644
>>> --- a/net/netfilter/nf_conntrack_netlink.c
>>> +++ b/net/netfilter/nf_conntrack_netlink.c
>>> @@ -923,7 +923,7 @@ ctnetlink_change_status(struct nf_conn *ct, const struct nlattr * const cda[])
>>>     unsigned int status = ntohl(nla_get_be32(cda[CTA_STATUS]));
>>>     d = ct->status ^ status;
>>>
>>> -   if (d & (IPS_EXPECTED|IPS_CONFIRMED|IPS_DYING))
>>> +   if (d & (IPS_EXPECTED|IPS_DYING))
>>>             /* unchangeable */
>>>             return -EBUSY;
>> I think that we should explicitly report if the user unsets
>> IPS_CONFIRMED. Please, don't change this.
>>
>> Apart from that, the patch seems fine to me. Thanks!
> 
> Problem is we now (I mean after my patch) enter
> ctnetlink_change_status() with ct->status being null (or at least,
> IPS_CONFIRMED not set)

Pablo, please let me know whether you want me to apply this.