Re: 32-bit FreeBSD under 64-bit KVM

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Aurelien Jarno wrote:
> Yep. Here are what I get in my dmesg. The lines below are output when
> the kernel is started (just after the bootloader):
>
> Mar  3 16:50:35 joule kernel: assertion failed /usr/local/src/kvm-15/kernel/mmu.c:722: (gpa & HPA_ERR_MASK) == 0
> Mar  3 16:50:35 joule kernel: audit error: (pre page fault) levels 2 gva 444000 gpa ffffffffffffffff hpa ffffffffffffffff ent 3e369021
> Mar  3 16:50:36 joule kernel: assertion failed /usr/local/src/kvm-15/kernel/mmu.c:722: (gpa & HPA_ERR_MASK) == 0
> Mar  3 16:50:36 joule kernel: audit error: (post page fault (fixed)) levels 2 gva 444000 gpa ffffffffffffffff hpa ffffffffffffffff ent 3e369021 
>
>
> Then the kernel takes a huge time to boot, and at then end of the kernel boot, or maybe when
> trying to start init, the following lines are printed hundred thousand of time:
>
> Mar  3 18:40:30 joule kernel: audit error: (pre page fault) levels 2 gva ffffffffbfbfe000 gpa 1e81e000 hpa 4749c000 ent 564ca825
> Mar  3 18:40:30 joule kernel: audit error: (post page fault (fixed)) levels 2 gva ffffffffbfbfe000 gpa 1e81e000 hpa 4749c000 ent 564ca825
>   

Okay, an mmu bug.  Been a while since we've seen one.

Please post a URL for the .iso so I can take a look, along with exact 
instructions for reproducing the bug.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV