Date: Tue, 4 Mar 2008 21:10:04 GMT From: Kris Kennaway <kris@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/121322: 'panic: spin lock held too long' on reboot Message-ID: <200803042110.m24LA4Ij091291@freefall.freebsd.org>
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The following reply was made to PR kern/121322; it has been noted by GNATS. From: Kris Kennaway <kris@FreeBSD.org> To: Lars Stokholm <lars.stokholm@gmail.com> Cc: freebsd-gnats-submit@freebsd.org Subject: Re: kern/121322: 'panic: spin lock held too long' on reboot Date: Tue, 04 Mar 2008 22:07:33 +0100 Lars Stokholm wrote: > On Mon, Mar 3, 2008 at 9:56 PM, Kris Kennaway <kris@freebsd.org> wrote: >> Can you enable WITNESS and DDB and reproduce the problem? It will drop >> into the debugger and you can do 'show locks' to show who holds it, then >> 'bt <#>' that thread. > > I was unsure of what to do with 'bt', so here's just the output of the > command without arguments. If that's not what you wanted me to do, > I'll try again. :) Sorry, I meant 'show alllocks'. Look for the spinlock and pass that thread ID as the argument to bt. > I apologize for giving you the output as an image. Is there a way to > write it to the disk as plain text? If you call doadump then the DDB output will often be saved for display by kgdb. Kris
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