Re: 2.4.23 hard lock, 100% reproducible.

Marcelo Tosatti
2003-12-08T10:32:40Z

On Sun, 7 Dec 2003, Mark Symonds wrote:

>
> Hi,
>
> >
> > The first oops looks like:
> >
> > Unable to handle kernel NULL pointer
> > dereference at virtual address: 00000000
> >
> [...]
> >
> >
> > Isnt it a bit weird that the full backtrace is not reported ?
> >
> > wli suggests that might stack corruption.
> >
>
> My bad - wrote it down by hand originally since
> it was locked hard.
>
> >
> > I dont see any suspicious change around tcp_print_conntrack().
> >
> > Any clues?
> >
>
> I'm using ipchains compatability in there, looks like
> this is a possible cause - getting a patch right now,
> will test and let y'all know (and then switch to
> iptables, finally).

Mark,

Please try the latest BK tree. There was a known bug in the netfilter code
which could cause the lockups.