lkml.org 
[lkml]   [2006]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Panic in ipt_do_table with 2.6.16.13-xen
Patrick McHardy wrote:
> Matt Ayres wrote:
>> I have been noticing this same problem dozens of times and have finally
>> caught a full trace. I have run it through ksymoops, but there is no
>> /proc/ksyms. Is there a better method for getting information out of
>> the Code line than using ksymoops in 2.6 kernels?
>
>
> CONFIG_KALLSYMS will make the kernel decode the oops itself.
>

That's odd, I had thought that too. This is what "zcat /proc/config.gz
| grep KALL" shows:

CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set

I take it my run through ksymoops was of no help in diagnosing the
problem? The panic is _always_ in ipt_do_table.

>> The kernel is for Xen, but it does not appear to be related to Xen.
>
>
> We haven't had problems in that code for ages, so my initial feeling
> is that it probably is related to Xen. Do you have any other patches
> applied besides Xen? Please also post the full ruleset you're using
> and anything else that might appear special about your setup.
>

I had initially sent my traces to the Xen guys. They have not stated it
is NOT specific to Xen, just that's it's unlikely. I did not experience
the problem with kernel 2.6.12, just with 2.6.16 (up to .13 bugfix
release). I have completely disabled all support for SCTP
(protocol/netfilter/conntrack) as I know it is still quite buggy. I
know Xen touches the network code a lot, but nothing specific to
iptables. I had contacted them twice before LKML as I didn't want to
post patch specific problems here. I have no other patches applied
besides the Xen patch.

My ruleset is pretty bland. 2 rules in the raw table to tell the system
to only track my forwarded ports, 2 rules in the nat table for
forwarding (intercepting) 2 ports, and then in the FORWARD tables 2
rules per VM to just account traffic.

I've CC'ed xen-devel on this in case they can provide some insight. I
am not subscribed to LKML so please make sure to reply to me also in
responses.

Thank you,
Matt Ayres
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-05-16 02:04    [W:0.043 / U:0.476 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site