AFAIK a Page Fault always means that a page that has been referenced is not
in physical memory.
> -----Original Message-----
> From: William Montgomery [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, August 16, 2000 10:10 PM
> To: Norm Dresner
> Cc: [EMAIL PROTECTED]
> Subject: Re: [rtl] debugging a Page Fault
>
>
> Thanks for the reply.
>
> I agree with the analysis below. I just wanted confirmation on the
> definition of "Page Fault (exception 14)". I believe this means
> a pointer has referenced an address which in _not_ in physical memory.
> Is this correct?
>
> Is there a way to look at the stack in gdb?
> When I do a "backtrace" command the results look reasonable.
> How can I examine the actual (raw) stack contents?
> Also, I would like to see where the stack pointer is and how deep
> I have gone into the stack.
>
> On Wed, 16 Aug 2000, Norm Dresner wrote:
>
> > If you're causing a page fault when you're returning from a function
> call,
> > one possibility is that the function has overwritten the stack and that
> the
> > place to which you "return" is not the place from which it was called
> but
> > something way off in outer space -- hence a page fault.
> >
> > Norm
> >
> > At 06:42 PM 8/16/2000 -0400, William Montgomery wrote:
> > >
> > >I have a large module which causes my machine to lockup
> > >from which there is no escape but power off/on. Thanks to the
> > >great work by the RTLinux folks I am using the new rtl_debug
> > >module and gdb to find this. The dmesg produces:
> > >
> > >rtl_debug: exception 14 in rt_process (EIP=0xc80c63d0), thread id
> > >0xc6e00600;
> > >(re)start GDB to debug
> > >
> > >I am able to see the line this occurs at using gdb but this is just
> > >pointing to a function return brace. I see that this is a Page Fault
> > >exception but I'm not sure what this means or what might be the cause.
> > >
> > >Any hints?
> > >
> > >Wm
> > >
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> >
>
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