Date: Tue, 31 Jul 2001 12:06:49 -1000 (HST) From: Vincent Poy <vince@oahu.WURLDLINK.NET> To: John Baldwin <jhb@FreeBSD.org> Cc: Sheldon Hearn <sheldonh@starjuice.net>, Kris Kennaway <kris@obsecurity.org>, <current@FreeBSD.org> Subject: Re: -current lockups Message-ID: <20010731120618.A87252-100000@oahu.WURLDLINK.NET> In-Reply-To: <XFMail.010731145742.jhb@FreeBSD.org>
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On Tue, 31 Jul 2001, John Baldwin wrote: > > On 31-Jul-01 Vincent Poy wrote: > > On Tue, 31 Jul 2001, John Baldwin wrote: > >> > root@pele [9:29pm][/usr/temp] >> > >> > Jul 28 21:29:40 pele /boot/kernel/kernel: lock order reversal > >> > Jul 28 21:29:40 pele /boot/kernel/kernel: lock order reversal > >> > Jul 28 21:29:40 pele /boot/kernel/kernel: 1st 0xd92fea9c process lock @ > >> > /usr/src/sys/vm/vm_glue.c:469 > >> > Jul 28 21:29:40 pele /boot/kernel/kernel: 1st 0xd92fea9c process lock @ > >> > /usr/src/sys/vm/vm_glue.c:469 > >> > Jul 28 21:29:40 pele /boot/kernel/kernel: 2nd 0xc118dfb0 lockmgr interlock > >> > @ /usr/src/sys/kern/kern_lock.c:239 > >> > Jul 28 21:29:40 pele /boot/kernel/kernel: 2nd 0xc118dfb0 lockmgr interlock > >> > @ /usr/src/sys/kern/kern_lock.c:239 > >> > >> This is due to the way that lockmgr locks are implemented unfortunately, and > >> will be fixed when vm maps switch to sx locks instead of lockmgr locks. > > > > Interesting. Is there a workaround so it just reboots instead of > > freezing? Also, I noticed that you committed some changes to the kernel, > > is that supposed to help it any? > > There is currently not a workaround. The changes committed fix other things, > but not this problem. I haven't actually seen this lock order cause a freeze > before to be honest. Yeah, that's the weird part... I thought adding a DDB_UNATTENDED as a option would atleast make it reboot or something... Cheers, Vince - vince@WURLDLINK.NET - Vice President ________ __ ____ Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ] WurldLink Corporation / / / / | / | __] ] San Francisco - Honolulu - Hong Kong / / / / / |/ / | __] ] HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____] Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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