Re: strange panic, debugging help wanted..
Re: strange panic, debugging help wanted..
- Subject: Re: strange panic, debugging help wanted..
- From: Andrew Gallatin <email@hidden>
- Date: Wed, 22 Dec 2004 16:47:09 -0500 (EST)
William Kucharski writes:
> On Dec 22, 2004, at 1:12 PM, Andrew Gallatin wrote:
>
> > Thanks for the details, but I'm not very familiar with the ppc
> > architecture. What's a common programming error that can result in
> > this behaviour on ppc? Could returning from a function after it
> > clobbers the stack result in this behaviour? If so, are there any
> > "red-zone" options in the Darwin kernel that could catch something
> > like this?
>
> If your programmers are using assembly, inspection of their code can
> help find this sort of thing, and it's usually a typo (e.g. "Oh, I
> meant to clear %r10, not %r1...")
Nope, no assembly except for a few inline sync instructions.
> If they're using C, overwriting the stack could easily cause this (say
> going beyond the bounds of an automatic array or variable.)
That's probably it, I'll start searching for changes that fit this
bill.
Thanks for your help,
Drew
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