Hi All, I tried the same thing on kernel, kernel.development, kernel.debug. Also I did set DEBUG=1 ( which did not make much sense, and did not work ). It would be of real help, if someone tell me what is going wrong. Prokash _______________________________________________ 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 If I set a break point in any of the hot path ( like, tcp_connect), it gets hit quite often. But I never see the sources when I go up and down the frames. I know for fact, that any kext I built can see the source, well of course I only tried for debug built). Basically can I do source level stepping given that I have the correct build for KernelDebug kit that matches with xnu kernel source. There are articles on how to have a gdb stub on the VM ( 10.10 osx), but the host osx does not have gdb. I can build gdb using auto tools on open source, but not sure if lldb could do this. Furthermore all the articles shows how to setup and break into the kernel, but not source level stepping. Not sure if source-map is the right thing or not. On gdb kernel debugging directory add works all the time.