Install PP2P => Fatal trap 12 : page fault while in kernel mode

krisken

I tried to set up a VPN server using PPTP. When i saved the config, all connections where lost. When i want to reboot the pfsense router, the following error appears during the start up:

Starting OpenNTP time client…done.
Starting DHCP service...done.
Starting DNS forwarder...done.
Configuring firewal......done.
Configuring PPTP VPN service...

Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 02
fault virtual address = 0x4
fault code = supervisor write, page not present
instruction pointer = 0x20:0xc0b1adaf
stack pointer = 0x28:0xe85259f8
frame pointer = 0x28:0xe8535a18
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 = 247 (initial thread)
trap number = 12
panic = page fault
cpuid = 2
Uptime : 59s
Cannot dump. Device not defined or unavailable.
Automatic reboot in 15 seconds - press a key on the console to abort

Euhm…help?! :-)

eri--

Can you please show me your <interfaces>section in the config.
Mostly i want to know what kind of interfaces you have assigned.</interfaces>

krisken

@ermal:

Can you please show me your <interfaces>section in the config.
Mostly i want to know what kind of interfaces you have assigned.</interfaces>

I can't even boot up the router, so viewing the config file is quite difficult right now :) I'm trying to start up using a ubuntu cd and then i want to edit the config file, like the xml file in my backup (and yes…quite foolish...an old backup :s)

I hope when i set everything back as it was, it will work:

eri--

Try this it should fix your problems.
https://rcs.pfsense.org/projects/pfsense/repos/mainline/commits/c513c30900f98d47dfa77dcf03d42382fae34cd7

krisken

Ermal,

Do you have any idea how i can edit it? I can't startup pfsense, so i can't vi/nano it over there. And with a ubuntu 10.10 cd in it, i can't reach the HD?

eri--

Just choose single user mode when pfSense gets rebooted and you can do viconfig from there or vi/nano the file i gave you the patch.
With viconfig just delete the pptpd section on config and reboot and than you can make the change i gave you in a easier environemnt.

krisken

First of all, thanks for your great (and quick) help!

I've tried the "viconfig" command in the single user mode, but i get some errors:

ex/vi : Error : /var/tmp/vi.recover : Read-only file system
ex/vi : Error : Modifications not recoverable if the session fails
ex/vi : Error : /cf/conf/config.xml : Read-only file system
ex/vi : Error : Unable to create temporary file : Read-only file system
override rw-r–r-- root/wheel for /tmp/config.cache?

If i just do enter, yes or y, well...i got the # promt and that's it...

krisken

Anyone that can help me? :)

eri--

Try fsck /
and mount -u / or mount -fu /

mxx

Before editing try /etc/rc.conf_mount_rw

krisken

I can see the /etc/inc/vpn.inc file using vi, but i can't search or anything…even backspace or delete give me some strange characters?