[Openswan Users] Kernel Panic - not syncing

[Paul Wouters]

On Sun, 7 Aug 2005, Ravi Verma wrote:

> I have installed Openswan Linux Openswan U2.4.0dr8/K2.6.9-5.0.3.EL
> (netkey) on two Intel servers runnning Centos 2.6.9-5.0.3.EL.
>
> Everything seems to work fine except for random sudden freezing of the
> machines. It is happening on both the servers.
>
> Here is the message I copied from the console.
>
> Kernel Panic - not syncing: net/ipv4/xfrm4_output.c:108
> spin_lock(net/xfrmx_state.c: f7c2f4141) already locked by
> net/ipv4/xfrm4_output.c/108)

Try using a more recent 2.6 kernel such as 2.6.12.X. If you do not want
to touch your RHEL kernel, use another machine with Fedora on it for IPsec.
The RHEL3 kernels are a very poor choice for supportinng IPsec.

Paul