Bug#523942: linux-image-2.6.26-2-s390 will not boot!
Actually, I decided to go ahead and do the plan I had outlined, just for grins, while I was waiting on an answer.
If it didn't work, and Frans said "yes, do that", I could then say it didn't work right away and save time.
But it did work!
Here is what I did, as close as I can remember it. I was logged in as root. linux-image-2.6.26-1-s390 and
linux-image-2.6.26-2-s390 are both installed at this point, linux-image-2.6.26-2-s390 is the default kernel
image, and linux-image-2.6.26-1-s390 is the currently running kernel. kernel-package and all its
prerequisites have previously been installed.
aptitude install linux-source-2.6.26
aptitude clean
cd /usr/src
tar -xjf linux-source-2.6.26.tar.bz2
rm linux-source-2.6.26.tar.bz2
cd linux-source-2.6.26
cp -a /boot/config-2.6.26-2-s390 .config
cd arch/s390/lib
vi div64.c
[change "alr %1,%2\n" to "ahi %1,1\n", file it]
cd /boot
aptitude purge linux-image-2.6.26-2-s390 linux-image-s390
ln -s vmlinuz-2.6.26-1-s390 vmlinuz
ln -s initrd.img-2.6.26-1-s390 initrd.img
rm initrd.img.old
rm vmlinuz.old
zipl
cd /usr/src/linux-source-2.6.26
make menuconfig
[Exit without making any configuration changes]
make-kpkg clean
make-kpkg --append-to-version -custom2-s390 --revision 1 --initrd kernel_image
cd ..
dpkg -i linux-image-2.6.26-custom2-s390_1_s390.deb
[zipl is run during the installation of the package]
rm linux-image-2.6.26-custom2-s390_1_s390.deb
shutdown -r now;exit
The machine shutdown and rebooted with linux-image-2.6.26-custom2-s390 as the running kernel.
It came up perfectly!
Wow! What a nasty bug! When the "divide" instruction doesn't work properly, anything can happen anywhere!
I will continue to run this custom kernel image until there is an official Debian kernel image available which contains
this fix. Please leave this bug report open until such is the case. And please get this fix into the official kernel ASAP!
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