KGDB stack traces in the kernel.

[John Baldwin]

On Monday, April 04, 2011 9:04:23 pm Justin Hibbits wrote:
> On Apr 4, 2011, at 6:57 PM, Julian Elischer wrote:
> > is there anyone here with enough gdb/kgdb source experience to know  
> > what
> > we would need to put on the stack at fork_exit() to make it stop  
> > when it
> > gets there?
> >
> > not only is it annoying but it slows down debugging because kgdb and  
> > the ddd
> > front end ask for stacks a LOT. sometimes it actually just hangs as  
> > the stack
> > goes into a loop and never ends.
> >
> > I had a quick look but didn't spot how gdb decides it has reached  
> > the end of a stack.
> >
> > Julian
> 
>  From my experience, it checks for a NULL stack chain pointer.  Once  
> that reaches NULL, it's the end of the stack.

No, I removed that because it broke debugging panics due to NULL function 
pointers.

-- 
John Baldwin