Yes, I’ve had little luck single-stepping in kernel code as well (though to be honest I haven’t really tried it for years). At this point, I do almost all of my debugging using fwkpfv. -John _______________________________________________ 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: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com