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

Tue Sep 16 11:22:00 UTC 2008
Akemi Yagi <amyagi at gmail.com>

On Tue, Sep 16, 2008 at 12:38 AM, Pasi Kärkkäinen <pasik at iki.fi> wrote:
> 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?

You might want to look at this upstream bugzilla:


There is a quick fix in comment #24 that you can try out without
having to rebuild kernel.