Re: kernel panic

[David Balazic]

The kernel error message ( an "oops", as it is called ) is a kernel
error ( bug ). Report it. The instructions for reporting are written
in the kernel sources. ( the file BUGS or README I am not sure which )

As it is 99% a kernel error, fix it by upgrading to a never version,
like  2.4.20.

You may post your working lilo.conf , so we can compare it to your
(non-working) grub setup.

Regards,
David Balazic

mi wrote:
> 
> Hello again.
> Before anybody answer my first mail, please rerad this.
> The bootfloppy basically is working.
> When i boot a 2.4.17 kernel ( no matter if from the harddrive or from the
> floppy) it comes up ok, but then freezes, after 'Mounted root (ext2) readonly'
> .... only occasionally with some error reporting (see below).
> The root filesystem is on ide1 (master) = (hd1,5) = hdc6, a logical partition
> about 17 GB  'far' from the rim. I don't use any 'lba' option for grub.
> i did some tracking...
> My first idea was to pass the --no-mem-option; but that did not match....
> Next idea, swap: there's a swap on each of both drives;
> so the kernel has to access the a ide drive that was inactive before.
> That's a difference i can imagine to my current 'fixed' LILO configuration,
> that chains from ide0 to ide1.
> But excluding the ide0-swap from /etc/fstab won't match, either.
> No i tried to boot a 2.2.19 kernel from ide0.
> That worked !
> Next i copied this kernel to ide1, and voila ! there it works, too.
> Also from floppy.
> So it seems to be a 2.4.17 specific problem.
> 
> Here's the first lines of it's error output, that occurs not every time, so
> I'm not sure if this is related to the freezing or not:
> 
> Unable to handle paging request at virtual address f604c487
> printing eip: c0118e3e
> xpde: 000000000000
> Oops: 0002
> [ much more stuff below, but no human language words...]
> 
> How to go on ?
> 1) Let it go and stay with LILO.
> But after trying the grub stage2-shell i never will be satisfied with lilo
> again ....
> 2 ) Stay with the old kernel ?
> 3) Try compile a more recent kernel
> 4) Track and find some options / tuning for grub and the kernel as well
> This i would prefer, because it's the safest to know what went wrong.
> 
> Since the failure doesn't occur with LILO, the question is: what is grub
> doing another way that affects the kernel between mounting the root and
> starting init.
> 
> What ideas do i have ?
> a) Try to find out what the kernel message means.
> - probably i have to mail to some kernel.org and wait some more days....not
> funny. I don't know the right address where to ask, in addition :-|
> b) Reading up loads of archive pages with my slow like hell dialup link :-|
> c) Check something with mapping (lilo chains with 0x80 to 0x83)
> d) that was all :-(
> 
> btw.
> I was so hopeful that with grub i can get rid of most chainloading .....
> If i the end have to chain the two mbr's as well here with grub, please let
> me know, so that i don't have to run through all test i can imagine....
> 
> Would be thankful for any little help.
> 
> --
>                             micha.
> 
> # -------------- Here's the menu.lst:
> 
> # LINUX:
> 
> title Woody 2.4.17  kernel (fd0)
> root (fd0)
> kernel (fd0)/boot/vmlinuz-2.4.17 root=/dev/hdc6
> 
> title Woody 2.4.17  kernel (hd1,0)
> root (hd1,0)
> kernel (hd1,0)/vmlinuz root=/dev/hdc6
> 
> # ----------- Here the relevant etc/fstab - Partitions:
> GRUB ||  DEVICE        MOUNT  TYPE    OPTIONS  SIZE
> 1,5  || /dev/hdc6         /     ext2    auto,user,rw,exec,dev,suid
> 1,6  || /dev/hdc7        none   swap    sw,pri=1
> 1,0  || /dev/hdc1        /boot_1        ext2    auto,user,rw,exec,suid
> 0,2   || /dev/hda3  none        swap    sw,pri=2
> 0.1   || /dev/hda2  /boot_0 ext2    auto,user,rw,exec,suid
> 
> _______________________________________________
> Bug-grub mailing list
> address@hidden
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-- 
David Balazic
--------------
"Be excellent to each other." - Bill S. Preston, Esq., & "Ted" Theodore
Logan
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