ftrace introduces instability into kernel 2.6.27(-rc2,-rc3)

[Benjamin Herrenschmidt]

On Mon, 2008-08-18 at 23:12 -0400, Steven Rostedt wrote:
> On Tue, 19 Aug 2008, Benjamin Herrenschmidt wrote:
> 
> > Ok, so i did a patch, but it doesn't fix the problem. So
> > there's something else whacking on the stack frames.
> 
> Is it 32 bit or 64?  I've tested the 64 bit quite a bit, but not so much 
> the 32 (my powerbook is not usually that stable).

32-bit. Reproduced on powerbook by a user, 440, 750, ...

> You might want to look at the entry.S mcount code too.

Yeah, I had a look, nothing obviously bad there, but I may just
have missed it :-)

Ben.