Re: another strange panic
Re: another strange panic
- Subject: Re: another strange panic
- From: Andrew Gallatin <email@hidden>
- Date: Tue, 1 Mar 2005 09:31:33 -0500 (EST)
William Kucharski writes:
> On Feb 28, 2005, at 3:13 PM, Andrew Gallatin wrote:
>
> > Sound assertion "!success && ( 0x20 == address )" Failed in
> > AppleOnboardAudio/K2Platform.cpp line 285 goto Exit
> >
> > Exception state (sv=0x00337230)
> > PC=0x000924A0; MSR=0x0001030; DAR=0x003373D8;
> > DSISR=0x003373E0;LR=0x003373C8; R1=0x003372B8; XCP=0x003373E8 (Unknown
> > code)
>
> The error message indicates that the system couldn't write to the
> Crystal 82XX S/PDIF digital audio receiver via the I2C bus. Could your
> PCI driver be doing anything to somehow affect that?
Nothing intentional, at least.
> Of course the LR is set to 0x3373c8, which given the DAR and DSISR
> seems very suspicious.
>
> I suspect this is yet another example of the failure we've already
> seen, where something has trashed the kernel's stack and has resulted
> in something going off into the weeds.
>
> My suspicion is still that there's something in your PCI driver that's
> overflowing or otherwise stomping on the stack, and it's just a matter
> of dumb luck who happens to get nailed by it and when...
Yes, I agree. I just wish I could figure out what I'm doing to cause
it. At least there are guard pages around the stack, according to Godfrey.
Drew
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