Re: Oops in scsi_send_eh_cmnd 2.6.21-rc5-git6,7,10,13

[Andrew Burgess <aab@cichlid.com>]

On Thu, 2007-04-05 at 15:36 -0700, David Miller wrote:
> From: Andrew Burgess <aab@cichlid.com>
> Date: Thu, 5 Apr 2007 15:13:27 -0700
> 
> > David, do you see any other problems with scsi_send_eh_cmnd?
> > 
> > I've switched back to 2.6.18 which seems to not oops 
> > and am happy to try patches.
> 
> Does 2.6.20 with my patch OOPS too?  Does reverting my patch
> make the oops go away?
> 
> If reverting my patch makes the OOPS go away, we need to
> verify if page_address() is returning crap for some reason
> or the length is wrong.

2.6.20.4 with your patch dies in the memcpy (as does 21-gitN)

2.6.20.4 without your patch dies in the subsequent __free_page
with a null pointer ref at 000...008

James should I try your posted patch? On which kernel?

This machine will die in boot on these kernels until I power
cycle it (which somehow fixes the disk/controller for a
while), 2.6.18 continue to work (gets the scsi errors and
continues)