[Pkg-virtualbox-devel] 1.6.4

[Stefan Lippers-Hollmann]

Hi

On Sonntag, 17. August 2008, Stefan Lippers-Hollmann wrote:
> Hi
> 
> On Sonntag, 17. August 2008, Michael Meskes wrote:
> > On Sun, Aug 17, 2008 at 04:16:52PM +0200, Stefan Lippers-Hollmann wrote:
> > > > boot failure usually already happens for me before the framebuffer 
> > > > initializes, disabling the framebuffer (vga=0) reveals vastly different
> > > > panics which are also usually cut (don't fit into 80*25 characters). 
[...]
> For testing, I've now switched to grub2 (no graphics, simple grub.cfg), no 
> changes, the most common error message is
> 	Decompressing Linux... Parsing ELF... done.
> 	Booting the kernel
> 	BUG: unable to handle kernel<1>BUG: unable to handle kernel<1>BUG: unable to h
> 	[another 20 lines like that]
> 	andle kernel<1>BUG: unable to handle kernel<1>BUG: unable to handle kernel NUL
> another one now ending in
> 	andle kernel<1>BUG: unable to handle kernel<1>BUG: unable to handle kernel pag
> 	ing request at 00001688
> The other traces which appear sometimes are just too badly cut at the top.
> 
> What is strange though, is that there are no definitive results, while I 
> wasn't able to boot 2.6.26-1-686 with virtualbox-ose 1.6.4 so far, it just
> now succeeded once, while a preemptive kernel continues to fail booting (at
> least with a much higher probability, even that one boots rarely).

In the mean time I have bisected the issue back to

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e587cadd8f47e202a30712e2906a65a0606d5865

Once that commit enters the kernel, it crashes as virtualbox-ose guest for
me. Given that this issue is hard to trigger reliably (it might just boot 
properly 10 times in a row, but crash the whole day afterwards) and because
a 2.6.26.3-rc1 with that patch reverted is still compiling and hasn't been 
tested yet, I'm not claiming that it actually is that commit - yet. 

Likewise I'm not 100% positive if it's a kernel problem or a bug in 
virtualbox-ose yet, but given that I'm not sure how much time I have during
the remaining week, I wanted to report the bisect results early.

Regards
	Stefan Lippers-Hollmann
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