Seg fault, Fedora 17 upgrade kernel?

mjbradakis · 07-08-2012, 03:41 PM

So I follow the instructions on the Fedora page to use preupgrade to convert my system to Fedora 17. It doesn't work. Perhaps the problem is related to this:

grub> root (hd0,0)
root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
grub> kernel /upgrade/vmlinuz
kernel /upgrade/vmlinuz
[Linux-bzImage, setup=0x4000, size=0x3dbf60]
Segmentation fault

Any suggestions?

mjb.

kbp · 07-08-2012, 05:57 PM

Sounds like a corrupt image, I'd clean up and try again - and if all else fails you could always use the preferred "clean install" method.

aijazbaig1 · 07-08-2012, 11:50 PM

Hi

Could you please elaborate a little about how you arrived at this conclusion that the image is corrupt? Perhaps for educational purposes.

Also, the size of the kernel image is around 4MB (as per the above). How can be kernel be so small (assuming its a regular desktop for which it was built). May be it is an embedded system and they might have customized the kernel according to their constraints? Or is there something else you think?

kbp · 07-09-2012, 06:08 AM

It wasn't a conclusion, it was just a guess. I guessed that the boot loader would attempt to load the image into memory and test it for validity - the fact that it raised a seg fault seemed to indicate that something was wrong with the image.

mjbradakis · 07-10-2012, 12:29 AM

I decided to go from 11 to 17 in smaller steps, not all at once, and everything worked. Well, almost, now the machine boots but won't display anything, even though one can log in using ssh from another host. But that is not a kernel issue, most likely.

Thanks for the assistance.

mjb.

kbp · 07-10-2012, 01:48 AM

<bleep> .. you didn't say you were upgrading from Fed 11, I highly recommend a fresh install.

mjbradakis · 07-10-2012, 08:23 PM

I did end up starting from a fresh install of 15 from a disk I had. The day I started the upgrade project I was also dealing with a clogged main sewer line, so my focus was a bit scattered. Things are much better now, both sewer and software.

Next time I'll provide more specific details.

mjb.

John VV · 07-10-2012, 09:35 PM

i would not even try to Upgrade from fedora 15 to 17

the fedora 11 to 17 upgrade will NEVER have worked well

download a fedora 17 install dvd and do a clean fresh NEW install of fedora 17