panic: trap: memory address not aligned (tap/if_bridge/openvpn -> kgdb information)

[James Tanis]

I don't know, think its the blind leading the blind here. I think you
need someone wiser in the force then I :P.

On 5/28/06, Michael Ortmann <mortmann at googlemail.com> wrote:
> James Tanis schrieb:
> > I don't really know why it has to be the kernel's fault as you said,
> > the error is memory address is not aligned, which unlike i386, is
> > illegal under sparc32/64. I'm no kernel hacker either, but it seems to
> > me that the userland program is attempting to access memory at an
> > inappropriate address. Honestly the error could be caused by anything,
> > but if you have searched Google (and you should have by now) you'll
> > see the error could be cause by a multitude of things, this was just
> > one idea. I've never even used openvpn. I may try installing it today
> > or tomorrow, if I put freebsd back on my ultra60 just to see if I get
> > the same thing.
>
> i thought its the kernels fault because a userland program should never
> make the kernel panic, but segfault itself. else any userprogram could
> just write to an unaligned address and therefore crash the system - thus
> any user could crash the system.
>
> ok, openvpn is suid root but it should not access the kernels memory in
> any case, should it?
>
> im sure openvpn worked on sparc64/freebsd before, so, i could try out
> older/different openvpn versions and hunt the bug down there. but i
> still feel its not openvpns fault. how can i see if a kerneldriver
> (tap/if_brige) or openvpn leads to the crash? ill try to do ifconfig by
> hand and do what openvpn does, may be i can reproduce the crash that way...
>
> regards,
> Michael Ortmann
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-- 
James Tanis
jtanis at pycoder.org
http://pycoder.org