On Friday, June 20, 2003, at 12:04 AM, Herry Wiputra wrote: I am having a problem with my kext keep panicing in thread_invoke(). The exact error message is panic: thread_invoke: preemption_level 1 You are either sleeping with preemption disabled explicitly, or implicitly (by holding a real simple lock when you sleep). In my code, I have a function which already hold a network funnel, then enter this while loop in which it will sleep until an event happen and spawn a new thread to handle some computation. The new thread will also try to grab the network_funnel and will release it when it returns. My kext kept panicing on the second loop, after it spawns a new thread and sleep again waiting for an event to happen. Does anyone ever comes across this issue before?? I'd have to see the exact code to provide any more feedback than above. But look for a simple lock that you forget to unlock before sleeping. --Jim _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.