On Tue, 27 Feb 2007, Jiawei Ye wrote: > With the latest uipc locking changes, I experienced a hard lockup on my > -current machine. Many processes got stuck in *unp_m state and > ctrl-alt-delete at the console cannot properly restart the machine and I had > to hard-reset (no coredump available). Is there anyway to diagnose this? Please configure WITNESS, DDB, and BREAK_TO_DEBUGGER on a box with a serial console. Then attach the output of "ps", "show alllocks", and "alltrace" to an e-mail. With any luck, this is a leaked lock in some missed error case and we can just add a missing unlock. Thanks! Robert N M Watson Computer Laboratory University of CambridgeReceived on Tue Feb 27 2007 - 07:44:07 UTC
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