Brokenness in HEAD

[Garrett Cooper]

On Feb 25, 2009, at 8:21 AM, Nathan Whitehorn wrote:

> Something seems to currently be quite broken in HEAD for PowerPC, at  
> least on the AIM platform. I'm getting almost immediate panics all  
> over the place in the kernel, usually indicating memory corruption  
> somehow (faults on bogus addresses, illegal instructions, etc...).  
> This is a heads-up to those thinking of updating systems or who  
> might know what happened.
>
> The change is on order a week old, and I believe newer than the  
> 20th. I have not done a full binary search yet, but it is not  
> related to the following (checked by selective reversion of bits of  
> the tree, or disabling bits):
> - USB code
> - ATA code
> - Anything in sys/powerpc (the Altivec import in particular)
> - Any changes to kernel compile flags or the contents of /usr/src/ 
> share/mk
>
> The panics seem to correlated with file system use (either UFS or  
> NFS), but that may just be testing more code paths than a pure  
> computational load.
> -Nathan

Could this be related to the USB4BSD changes?
-Garrett