adding unloadable module support... kernel panic [SOLVED]

gnychis · Last edited by gnychis on Wed Mar 22, 2006 12:11 am; edited 1 time in total

hi,

I tried adding unloadable module support to my 2.6.15-r1 kernel and now I cannot boot up or else i get a kernel panic trying to load the snd-emu10k1 module at default level.

I tried adding a "1" at the end of my GRUB boot line, and also tried adding "runlevel=single" but neither seem to get me to a prompt to recompile my kernel without trying to load snd-emu10k1 first.

I am not sure what to do here. I'd greatly appreciate any help.

Thanks!
George

PsychoticRetina · Posted: Sun Feb 19, 2006 7:09 pm Post subject:

boot off of the cd, chroot and recompile kernel.
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patroy · n00b Joined: 14 Oct 2004 Posts: 60 Location: Vancouver BC

Do you have a live cd? If so just use that to boot or if you don't have a cd-burner get tomsrtbt http://www.toms.net/rb/ (single floppy linux).
Just chroot and recompile. (note for next time always keep the old working kernel incase of such moments).
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gnychis · Posted: Sun Feb 19, 2006 7:13 pm Post subject:

am i not getting into single user mode correctly? I would much prefer getting into single user mode because I have a software raid 0 which is very much a pain to setup and mount in the live disk and i don't want to risk screwing that up.

i will definately keep the old kernel in the future

PsychoticRetina · Posted: Sun Feb 19, 2006 7:17 pm Post subject:

in gentoo, i believe youd have to add a "single" runlevel manually to /etc/inittab + /etc/runlevels if you wanted one. im not sure though.
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PsychoticRetina · Posted: Sun Feb 19, 2006 7:21 pm Post subject:

i suppose you could also just compile a kernel on a diffent machine, stick it on a usb-drive or similar and copy it to /boot without chrooting.
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gnychis · Posted: Sun Feb 19, 2006 7:45 pm Post subject:

you know what, you sparked an idea... because i run a raid0 i always make a full backup onto another hard disk in my computer. My backup is in .tar.bz2 format and has my /boot in it... if i can just extract /boot/vmlinuz from it without having to extract the whole thing. The minimal live cd doesn't have "man" installed

How can i extract only a single file from a whole .tar.bz2?

gnychis · Posted: Sun Feb 19, 2006 8:07 pm Post subject:

okay i was able to boot up safely by mounting boot and extracting that file from my backup

phew... i knew i made those backups for something

I posted a message on the LKML about it, and someone seems interested in the problem, so i'm going to try and figure it out and post back here

Thanks guys!
George

gnychis · Posted: Sun Feb 19, 2006 10:04 pm Post subject:

well people responded on LKML to have me download 2.6.16-r4 and keep it unmodified and try the unloadable module support and it worked fine

I am thinking a patch that the vanilla sources is applying is causing this... i'm not sure though, i guess i have to avoid vanilla sources