[Pkg-virtualbox-devel] I'm having a problem with linux-image-2.6.26-1-686

[Joseph Rawson]

On Friday 29 August 2008 12:33:54 Stefan Lippers-Hollmann wrote:
> Hi
>
> On Freitag, 29. August 2008, Joseph Rawson wrote:
> [...]
>
> > On my virtualbox test machine, I have both 2.6.25-2 and 2.6.26-1
> > installed. The 2.6.25 kernel always works without a problem, but the
> > 2.6.26 kernel almost never works.  I'm using sid for the desktop that is
> > running virtualbox (Version: 1.6.2-dfsg-4).  I have a VM with two network
> > adapters, eth0 is bridged, and eth1 is on internal network.  The testing
> > machine has eth0 on the internal network, and uses dhcp from the other VM
> > that's bridged (the setup is detailed in the url above).
>
> [...]
>
> This issue is under discussion here, starting with
> 	http://lists.alioth.debian.org/pipermail/pkg-virtualbox-devel/2008-August/
>000925.html on lkml
> 	http://www.spinics.net/lists/kernel/msg773118.html
> and virtualbox' upstream bugtracker
> 	http://www.virtualbox.org/ticket/1875
>
> The probability of this triggering depends a bit on the kernel config
> (preemption enabled raises the probability massively and there are configs
> where it triggers rarely), but happens with all kernels post kernel commit
> e587cadd8f47e202a30712e2906a65a0606d5865 x86: enhance DEBUG_RODATA support
> - alternatives and affects all distributions with kernel >= 2.6.26-rc1.
>
> While the bug itself is pretty much confirmed, it's not totally obvious yet
> if the actual bug is located in the kernel or in virtualbox(-ose).
>
> Regards
> 	Stefan Lippers-Hollmann

Thanks for the quick response! :)
I've been reading the threads, but I'm not the best at digging deep into 
kernel code, or code that's close to the machine.  I'd like to help with this 
in anyway that I might be useful.

I've already tried booting the kernel using PXE, and it gave another oops.  I 
powered the VM down, and restarted it, and it ran just fine, so it's 
definitely not happening each and every time, but somewhat randomly.

It took a little while, but I just did a git clone of the kernel, in case 
anybody wants me to help test patches.  I haven't had to compile a kernel 
since 2.6.8 or so, and I haven't yet gotten familiar with git.  The last time 
I had to work with the tree, it was in bitkeeper, and I was messing with a 
zaurus.  So it's been a while, but I'm not totally inept.

Anyway, this has me at a bit of a standstill, since the 2.6.25 kernel has 
already been removed from the lenny mirror, and I'd have to change the 
linux-2.6 package on my local mirror to get it to point back at the older 
kernel.  I'd rather help y'all move forward, instead of spending the time 
telling the debian packages to look at an older kernel.

Let me know what y'all want me to do. :)



-- 
Thanks:
Joseph Rawson
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