Sporadic hitting the BUG() in the XFRM Garbage Collector

Sporadic hitting the BUG() in the XFRM Garbage Collector

[Ludo Stellingwerff]

Hi,

One of our client's machines sometimes hits the BUG() in xfrm_state.c 
(line 54).
This seems to happen at the removal of a IPsec policy. Some data: kernel 
2.6.6. with Netfilter POM IPSEC-patches, ipsec-tools 0.2.3.

If I read the code correctly this would mean that the garbage collector 
tries to stop an earlier deactivated timer. (del_timer returning '0')

Does anybody know what causes this? And, is a kernel BUG not a bit too 
drastic for this error condition?  Wouln't a WARN_ON suffice?

Thanks in advance,
Greetings,
Ludo Stellingwerff.

PS. As I'm currently not subscribed please CC me directly.

-- 
Ludo Stellingwerff

V&S B.V. The Netherlands
ProTactive firewall solution.
Tel: +31 172 416116
Fax: +31 172 416124

site: www.protactive.nl
demo: http://www.protactive.nl:81/netview.html

Re: Sporadic hitting the BUG() in the XFRM Garbage Collector

[David S. Miller]

On Tue, 07 Sep 2004 17:19:26 +0200
Ludo Stellingwerff <ludo@protactive.nl> wrote:

> This seems to happen at the removal of a IPsec policy. Some data: kernel 
> 2.6.6. with Netfilter POM IPSEC-patches, ipsec-tools 0.2.3.

Known problem with xfrm reference counting, fixed in 2.6.7
and later.

Please report networking bugs to the proper channels in
the future, namely linux-net@vger.kernel.org and netdev@oss.sgi.com
as this is where the networking developers listen.

Thanks.