Re: kernel NULL pointer
On Tue, Apr 17, 2001 at 04:58:22PM -0700, Karsten M. Self wrote:
> on Tue, Apr 17, 2001 at 11:37:42PM +0200, David Jardine (jardine@tesionmail.de) wrote:
> > On Tue, Apr 17, 2001 at 12:20:58PM -0700, Karsten M. Self wrote:
> > > on Tue, Apr 17, 2001 at 12:38:17AM +0200, David Jardine (jardine@tesionmail.de) wrote:
> > > > Following a re-compilation of my kernel (2.0.36) pon is
> > > > behaving erratically, to say the least. After a reboot
> > > > it works quite often the first time, less often the
> > > > second, rarely the third... and once it's failed, it
> > > > always fails after that.
> > > >
> > > > When it fails, it spews out a couple of screenfuls of
> > > > something too fast to capture and then hangs - sometimes
> > > > ^C kills it, sometimes ^D, sometimes I have to reboot.
> > > >
> > > > The straces of failed and successful connections seem
> > > > identical (except for pids and times, of course).
> > > >
> > > > This is the syslog account (the same every time, I think):
> > > >
> > > > Apr 17 00:17:07 gennes kernel: Unable to handle kernel NULL pointer dereference at virtual address c0000000
> > > > Apr 17 00:17:07 gennes kernel: current->tss.cr3 = 00101000, %cr3 = 00101000
> > > > Apr 17 00:17:07 gennes kernel: *pde = 00102067
> > > > Apr 17 00:17:07 gennes kernel: *pte = 00000000
> > > > Apr 17 00:17:07 gennes kernel: Oops: 0000
> > > > Apr 17 00:17:07 gennes kernel: CPU: 0
> > > > Apr 17 00:17:07 gennes kerneld: error: exit: Identifier removed
> > > >
> > > > If anyone recognizes the symptoms, I'd be most grateful
> > > > for pointers in the direction of a solution.
> > >
> > > It's a bug ;-)
> >
> > Don't kid me. I can bring the stablest of systems crashing
> > round my ears by sheer stupidity.
>
> Meet you and raise you ten.
>
> I'd gone through an extremely frustrating three months last spring with
> 2.2.14 in which sambafs and something else were rendering my system
> unstable -- crashes every 2-14 days, most indicated with "NULL pointer
> dereference". Turned out to be a known, but obscure, bug.
>
> > Anyway, I'm ashamed to say that I've decided to try potato again.
> > (Ashamed because of the trouble you took to help me, for which
> > many thanks.)
>
> No, no, no. I'm an arrogant, abuse ass heaping scorn on newbies,
> remember?
>
> > May I ask one more stupid question? I don't understand the exact
> > connection between kernel versions and distribution versions.
>
> There is none. Or at least no strong link.
>
> Most Debian distros are released against a set of kernel binaries which
> have been compiled for the distro. For 2.2 (Potato) this includes
> several flavors of 2.2, and possibly 2.0 and 2.4, kernels.
>
> > I tried to upgrade from slink to potato but found that the one thing I
> > really needed (jdk) had been replaced by something else (jikes and
> > kaffe) that I couldn't get working. Will I have problems if I try to
> > install the stuff from my slink CDs on my potato system?
>
> You should be able to backtrack packages so long as you don't get
> dependency conflicts. Don't have the dope on these particular packages
> though. I'd look into why these aren't working for you (kaffe, jikes).
I did just that and now they're working beautifully.
What a fantastic Easter! Family away for four days, subscribed to
this list, got lots of help, learnt to compile a kernel, install
sound, discovered lots of new things... A few holidays like that
and I won't call myself a newbie any more - if I don't forget it
all in the meantime. How long is it till next Easter?
Thanks to all of you.
David
>
> > Thanks
>
> --
> Karsten M. Self <kmself@ix.netcom.com> http://kmself.home.netcom.com/
> What part of "Gestalt" don't you understand? There is no K5 cabal
> http://gestalt-system.sourceforge.net/ http://www.kuro5hin.org
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