Re: Make the 32 bit Frame Pointer backtracer fall back to traditional

[Ingo Molnar <mingo@elte.hu>]

* Harvey Harrison <harvey.harrison@gmail.com> wrote:

> On Wed, 2008-01-09 at 22:05 -0800, Arjan van de Ven wrote:
> > Subject: Make the 32 bit Frame Pointer backtracer fall back to traditional
> > From: Arjan van de Ven <arjan@linux.intel.com>
> > 
> > The 32 bit Frame Pointer backtracer code checks if the EBP is valid
> > to do a backtrace; however currently on a failure it just gives up
> > and prints nothing. That's not very nice; we can do better and still
> > print a decent backtrace. 
> > 
> > This patch changes the backtracer to fall back to the non-framepointer
> > backtracer if the EBP value isn't within the expected range; so on weird
> > stack corruption cases we get at least something out...
> > 
> 
> Arjan, I've been doing some work on traps_32.c porting over the 
> oops_begin()/oops_end()/_die() arrangement from traps_64.c and then 
> use it in unifying some more parts of fault.c.

i've got that applied and it did not seem to interact with Arjan's code.

> If you have other work in this area, I'll hold off until your stuff 
> goes in...feel free to send me any work in progress stuff and I can 
> try to coordinate with you.

i'll yell if anything clashes.

	Ingo