LinuxQuestions.org - [SOLVED] Slackpkg upgrade-all: kernel panic

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- - Slackpkg upgrade-all: kernel panic (https://www.linuxquestions.org/questions/slackware-14/slackpkg-upgrade-all-kernel-panic-749003/)

adriv

08-20-2009 07:51 AM

Slackpkg upgrade-all: kernel panic

Hi,
I've upgraded SW with the latest security packages yesterday and now I get a kernel panic (installed the kernel sources too, otherwise couldn't reinstall the nvidia driver). I guess it has to do with the initrd.gz, right?
I'm using jfs on / (sda3) and /home (sda5).

So I thought I would have to create an initrd.gz, chrooted into /boot, but now what?

Code:

mkinitrd -c -k 2.6.27.31-smp -F

Is that correct?
And then change /etc/lilo.conf and add the line

Code:

initrd = /boot/initrd.gz

So that it looks like

Code:

image = /boot/vmlinuz

initrd = /boot/initrd.gz

root = /dev/sda3

label = Slackware

read-only

and run lilo

Am I missing something?
Never done this before, so I wanna be sure. ;)

samac

08-20-2009 07:53 AM

Quote:

mkinitrd -c -k 2.6.27.31-smp -F

try -m jfs instead of -F, this worked for me.

samac

adriv

08-20-2009 07:58 AM

OK, thanks, will try that.
The stuff in /etc/lilo.conf is correct do you think?

bgeddy

08-20-2009 08:02 AM

I usually give parameters for the kernel modules to load, root filesystem, root partition and clear the existing file tree. So the command would be :

Quote:

mkinitrd -c -r /dev/sda2 -f ext3 -m mbcache,jbd,ext3

for my system. Alien Bob proides a useful command generator available here to help. This is included with current.

I also note that you have

Quote:

image = /boot/vmlinuz

- it's as well to keep the huge kernel in case anything goes astray and point /boot/vmlinuz there (the default). So you would have a lilo stanza for the huge and one for the generic kernel with the initrd added.

Bruce Hill

08-20-2009 08:03 AM

Alien Bob put a nice script (/usr/share/mkinitrd/mkinitrd_command_generator.sh)
in Slackware to help facilitate the making of an initrd image. While it doesn't
guarantee to remove all possible errors from the process, it does a good job.

Just issue "sh /usr/share/mkinitrd/mkinitrd_command_generator.sh" and the script
will output a suggested command. If it looks good to you, run that and then
afterwards, run "lilo" to write the new bootloader.

adriv

08-20-2009 09:29 AM

OK, thanks, I downloaded the script and put it on a USB stick, mounted it and ran the script. Followed the advice and then ran lilo. Rebooted and get this error:

Code:

no kernel modules found for Linux 2.6.27.31

input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1

mount: mounting /dev/sda3 on /mnt failed: no such device

ERROR: No /sbin/init found on rootdev (or not mounted). Trouble ahead.

You can try to fix it. Type 'exit' when things are done.

What is wrong?
The script adviced 2.6.27.7, shouldn't that be 2.6.27.31?
But I tried that too and it didn't work either.

adriv

08-20-2009 09:31 AM

Quote:

Originally Posted by bgeddy (Post 3650812)

I also note that you have - it's as well to keep the huge kernel in case anything goes astray and point /boot/vmlinuz there (the default). So you would have a lilo stanza for the huge and one for the generic kernel with the initrd added.

Can you elaborate on that?
You mean there has to be a new set of lines in lilo.conf, instead of using the old ones?

bgeddy

08-20-2009 10:05 AM

Quote:

Can you elaborate on that?
You mean there has to be a new set of lines in lilo.conf, instead of using the old ones?

Yes - so you have two stanzas in lilo.conf. One for the standard huge kernel and one for the new generic and initial ram disk. Like this from my setup:

Code:

# Linux bootable partition config begins

image = /boot/vmlinuz-generic-smp-2.6.21.5-smp

initrd=/boot/initrd.gz

root = /dev/sda6

label = Linux_RamDisk

read-only

#

image = /boot/vmlinuz-huge-smp-2.6.21.5-smp

root = /dev/sda6

label = Linux_Huge

read-only

This (amongst other stanzas) gives me an initial ram disk option and a huge kernel option at boot up. This way if there's a problem with my initrd.gz creation ,(as stupidly happens for me sometimes), then I can boot to the default huge kernel and investigate.
As to your problem now. Boot back to the system and make sure you're running kernel 2.6.27.31 with "uname -r". It looks like something has gone strangely wrong with your initrd creation. Did you supply the "-k" and "-m" parameters correctly to mkinitrd ?

Bruce Hill

08-20-2009 10:19 AM

You don't need to download the script, it's on your system:

Code:

/usr/share/mkinitrd/mkinitrd_command_generator.sh

You can run it with the "-i" switch, which stands for interactive:

Code:

sh /usr/share/mkinitrd/mkinitrd_command_generator.sh -i

so that you can tell it which kernel to select, and other things.

If you're not fixed up, perhaps post the output of "ls -l /boot/".

As for the "no kernel modules found for Linux 2.6.27.31" message,
it sounds as if the CD/DVD/USB whatever you installed with was not
using the latest kernel. Maybe you had a media that you made from
a local mirror or something before the last updates to -current?

adriv

08-20-2009 10:44 AM

Uname isn't going to help be because I boot from the SW DVD.
I'm pretty sure it was 2.6.27.7-smp.
But upgrading with these security patches, that should be 2.6.27.31, right?
I've booted Knoppix now (also got erors on /proc) and now I see that /proc is empty! That's not normal, is it.

Bruce Hill

08-20-2009 10:48 AM

Please post the output of "ls -l /boot/".

adriv

08-20-2009 11:03 AM

Quote:

Originally Posted by Bruce Hill (Post 3650989)

You don't need to download the script, it's on your system:

Code:

/usr/share/mkinitrd/mkinitrd_command_generator.sh

You can run it with the "-i" switch, which stands for interactive:

Code:

sh /usr/share/mkinitrd/mkinitrd_command_generator.sh -i

I'm not running current, but 12.2, so that script isn't available by deafult. But I copied it to /boot the first time.

I'l start over from scratch.
boot SW 12.2 DVD
mkdir /mnt/slack
fsck.jfs /dev/sda3 (filesystem is clean)
mount /dev/sda3 /mnt/slack
chroot /mnt/slack
cd /boot
ls -l (ehmmm, that's an awful lot to type, but i'll give it a try)

Code:

README.initrd -> /usr/doc/mkinitrd-?.3.3/README.initrd

System.map -> System.map-generic-2.6.7.31

System.map -> System.map-generic-2.6.7.31

System.map -> System.map-generic-smp-2.6.7.31

System.map-huge-2.6.27.31

System.map-huge-smp-2.6.27.31

boot.0800

boot_message.txt

config -> config-generic-2.6.27.31

config-generic-2.6.27.31

config-generic-smp-2.6.27.31

config-huge-2.6.27.31

config-huge-smp-2.6.27.31

diag1.img

initrd-tree

initrd.gz

map

mkinitrd_command_generator.sh

slack.bmp

vmlinuz -> vmlinuz-generic-2.6.27.31

vmlinuz-generic-2.6.27.31

vmlinuz-generic-smp-2.6.27.31

vmlinuz-huge-2.6.27.31

vmlinuz-huge-smp-2.6.27.31

bgeddy

08-20-2009 11:03 AM

Quote:

You don't need to download the script, it's on your system:

@Bruce Hill : -the script was only included in current - it's not in 12.2 that's why I gave the reference.

Quote:

Uname isn't going to help be because I boot from the SW DVD.

@adriv :that's why I said "Boot back to the system" meaning I thought possibly you were booting to the installed Slackware.

adriv

08-20-2009 11:09 AM

Quote:

Originally Posted by bgeddy (Post 3651047)

@adriv :that's why I said "Boot back to the system" meaning I thought possibly you were booting to the installed Slackware.

Wish I could... :)

adriv

08-20-2009 11:19 AM

To add a few things, I'm in /boot now as you could see and run the script:
sh mkinitrd_command_generator.sh

Code:

?ind: /sys/block: no such file or directory

cat: /proc/bus/input/devices: no such file or directory

cat: /proc/mdstat: no such file or directory



mkinitrd_command_generator.sh revision 1.40



This script will now etc, etc.



mkinitrd -c -k 2.6.27.7-smp -f jfs -r /dev/sda3 -o /boot/initrd.gz

Changing the 7 into 31 doesn't solve the problem.

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