kern/127699: [panic] Fatal trap 12: page fault while in kernel mode

Volker Werth vwe at
Sun Oct 5 14:00:11 UTC 2008

The following reply was made to PR kern/127699; it has been noted by GNATS.

From: Volker Werth <vwe at>
To: Wouter Snels <nospam at>
Cc: bug-followup at
Subject: Re: kern/127699: [panic] Fatal trap 12: page fault while in kernel
Date: Sun, 05 Oct 2008 15:57:21 +0200

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 On 10/05/08 01:18, Wouter Snels wrote:
 > I ran ./  >/tmp/vmcore.log 2>&1 because it seems like there was
 > a lot of data which was still send to stdout and stderr, .. incase you
 > needed it, it should be in vmcore.log
 you may also use the script(1) command which automatically stores stdout
 and stderr into a text output file. But redirecting stderr is also fine.
 I think we've gathered a lot of debugging info but we need to make one
 last step to find the cause of the panic. Can you please run the
 attached script and file the outcome to the PR?
 It will give us the values of some variables and I'm pretty sure a net
 maintainer will find what's causing your panic and can produce a fix for
 it. As soon as we've got the additional debugging information, I'll
 forward your PR to the appropriate maintainer(s).
 Thank you for your effort - I know it's been a pain for you to give me
 all the requested information, but we need that for analysis.
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 #!/bin/sh +x
 # automated inspection of vmcore.3, PR kern/127699
 cat << EOF | asf -s /boot/kernel.old /tmp/vmcore.txt
 1 4 0xc0400000 91d344 kernel
 2 1 0xc0d1e000 6a32c acpi.ko
 3 1 0xc5772000 3000 if_stf.ko
 cat << EOF >> /tmp/vmcore.txt
 list *0xc577373d
 fr 7
 p sc
 p *sc
 p dst4
 p *dst4
 kgdb -q /boot/kernel.old/kernel /var/crash/vmcore.3 < /tmp/vmcore.txt

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