Re: 2.4.23 hard lock, 100% reproducible.

Marcelo Tosatti
2003-12-08T11:23:22Z

On Mon, 8 Dec 2003, Tim Timmerman wrote:

> >>>>> "Mark" == Mark Symonds <mark@symonds.net> writes:
>
> Mark> Hi,
>
> >>
> >> The first oops looks like:
> >>
> >> Unable to handle kernel NULL pointer
> >> dereference at virtual address: 00000000
> >>
> Mark> [...]
>
> Mark> I'm using ipchains compatability in there, looks like
> Mark> this is a possible cause - getting a patch right now,
> Mark> will test and let y'all know (and then switch to
> Mark> iptables, finally).
> Let me just add a me-too here.
>
> Haven't got the oops on my desk, here, but from what I could
> see, the error occurred in find_appropriate_src, somewhere in
> ipchains.
>
> Further, possibly irrelevant datapoint: ABIT BP6, ne2k-pci and
> 3Com590 network cards. When the oops occurs, everything locks,
> capslock and scrolllock are lit.
>
> I can reproduce the error by letting a second system ping the
> first, on the internal network. Sometimes it doesn't even
> complete a full boot.
>
> I'll try and capture more detail tonight.

Tim,

Please try the updated 2.4 BK tree (you can use -bk5,
http://www.kernel.org/pub/linux/kernel/v2.4/snapshots/patch-2.4.23-bk5.bz2).

It contains a fix for a known bug in the netfilter which might what you're
hitting.