site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Usually the PC is meaningful though. Godfrey On Feb 28, , at 15:31, Andrew Gallatin wrote: We never unload the sound driver. Just our own driver. Hmm.. I wonder if we've got a bogus stack someplace caused by some sort of stack overflow, and the garbage return address just happens to match the address of this audio driver init routine.. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... Probably not a stack overflow. We have guard vm pages around all of our kernel stacks and if you try to walk of the end of them you will get a panic, unfortunately not usually terribly meaningful as you have just walked over the end of the stack and it can't find a valid frame for the backtrace to start. This email sent to site_archiver@lists.apple.com