Bug#536354: linux-2.6: [s390,lenny] kernel panic during boot

[Frans Pop <elendil@planet.nl>]

On Thursday 09 July 2009, dann frazier wrote:
> On Thu, Jul 09, 2009 at 10:05:15AM -0600, dann frazier wrote:
> Here's a simple rebuild from zelenka's lenny chroot:
>   http://people.debian.org/~dannf/bugs/536354/

Thanks Dann. That paniced too.

After that I've managed after all to build a 4.1 cross toolchain [1].
And the kernel I just built with that also panics. So, progress: I can now 
start narrowing it down. Should be easy enough as I was smart enough to 
commit each patch series in git after applying.

Here's what I currently know for certain:
* 2.6.26-13 built with gcc-4.1 (4.1.2-24) boots [2]
* 2.6.26-17 built with gcc-4.1 (4.1.2-25) panics
* 2.6.26-17 built with gcc-4.2 (4.2.4-6) boots

So, the failure is gcc related. Now we have to find out if it is a 
specific kernel patch that gcc 4.1 does not like, or a regression in gcc 
itself.

[1] I now have an s390 cross compiler, built on a Lenny i386 Toshiba 
laptop, installed in an i386 Sid chroot on an amd64 Lenny HP notebook :-P
[2] This just happens to be the last .26 kernel I still had installed in 
Hercules.