On Wed, 2006-10-04 at 16:02 -0500, Steve Fox wrote:
> On Wed, 2006-10-04 at 09:57 -0700, Andrew Morton wrote:
>
> > You might well find this bisection lands you on origin.patch. ie: a
> > mainline bug. I note that David merged a few more xfrm fixes this morning.
> >
> > So to confirm that, first test just origin.patch and if that fails, test
> > git-of-the-moment. If that doesn't fail, they fixed it.
>
> origin.patch from --m3 failed. Unfortunately so did a fresh clone of
> Linus's git tree.
>
I am not an expert in that area, but your stack trace made me curious.
Looking at the dis-assembly, line of code in question is:
if (likely(modemap[mode->encap] == NULL)) {
Register contents indicate that, its called as
xfrm_register_mode(&xfrm4_tunnel_mode, AF_INET);
or
xfrm_register_mode(&xfrm4_transport_mode, AF_INET);
(family is AF_INET).
The invalid deref is due to modemap = 0x7ff (RAX: 00000000000007ff)
Since its so easy to reproduce, can you add a printk before
this check to dump mode->encap and modemap, afinfo, family etc ?
Just curious ..
Thanks,
Badari
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