Re: [Openvpn-users] OpenVPN crash

[Ole Barnkob Kaas <obk@xxxxxx>]

Hello,

I've posted this to the m0n0wall list (no replies) maybe someone here 
knows what goes wrong?:

When my SIP phone tries to connect to the proxy through openvpn-tunnel 
and the service isn't available openvpn seems to crash. I get this on 
the console:

*************************************************
Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x616f6c64
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc023329a
stack pointer           = 0x10:0xc9217bc4
frame pointer           = 0x10:0xc9217bcc
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 84 (openvpn)
interrupt mask          = net
trap number             = 12
panic: page fault


syncing disks...
done
Uptime: 11s
Automatic reboot in 15 seconds - press a key on the console to abort
***************************************************

Normally I use net4801 as platform, but I run this one on a pc to see if 
there was output on the console. Most of the time m0n0 just hangs - but 
now and then the above message is printed on the console.

The image is  1.21-ovpn1 but the issue is te same with earlier releases 
too. Is this a m0n0, BSD or openvpn issue?

Regards,

Ole Kaas

Ole Barnkob Kaas wrote:
> Hi all,
> 
> I use m0n0wall+OpenVPN to glue together our voip network. The OpenVPN 
> server is a Debian stable with OpenVPN 2.0.6.
> 
> If for some reason the SIP proxy isn't available at the far end a 
> "Destination Host Unreachable" is returned and the m0n0wall box dies and 
> it displays a kernel panic with OpenVPN listed as the process doing the 
> mess up.
> 
> Anyone seen this, or have an idea of whats wrong?
> 
> If not, I can try and get the exact kernel message and capture the 
> network traffic causing this.
> 
> Regards,
> 
> Ole Kaas
> 
> 
> 
> 
> 
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