[CentOS] netfilter kernel crash in ip_ct_refresh_acct / ip_conntrack with centos 5.x

Jake Holmquist jake.holmquist at manhattan.edu
Fri Sep 19 19:55:22 UTC 2008


> Hello!
>
> Has anyone seen this netfilter kernel crash?
>
> Images from the console of the crashed firewall:
> http://pasik.reaktio.net/centos5-kernel-crash/
>
> Firewall is HP DL360 G4 server running CentOS 5.x 32 bit.
>
> I've seen this firewall crashing multiple times, but I only started
investigating it lately..
>
> It has happened using CentOS 5.0, 5.1 and now also with 5.2. I'm not sure
if
> it was the same bug earlier, but at least the last two times (with CentOS
5.2)
> it has been the same, see screenshots.
>
> Last lines of the console output:
>
> EIP: [<f8af2c5c>] __ip_ct_refresh_acct+0xa1/0x129 [ip_conntrack] SS:ESP
0068:c0724e4c
>  <0>Kernel panic - not syncing: Fatal exception in interrupt
>
> At the moment firewall is running CentOS 5.2, Linux kernel
2.6.18-92.1.10.el5.centos.plus.
>
> Any tips how to resolve this?


Take a look here:
https://bugzilla.redhat.com/show_bug.cgi?id=433661

Looks like a test kernel is available....


We've been having this problem for quite some time - actually moved our
production box to RHEL 4.x

Jake




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