From owner-freebsd-current Tue Feb 6 15:15:51 2001 Delivered-To: freebsd-current@freebsd.org Received: from meow.osd.bsdi.com (meow.osd.bsdi.com [204.216.28.88]) by hub.freebsd.org (Postfix) with ESMTP id 84BD637B491 for ; Tue, 6 Feb 2001 15:15:31 -0800 (PST) Received: from laptop.baldwin.cx (john@jhb-laptop.osd.bsdi.com [204.216.28.241]) by meow.osd.bsdi.com (8.11.1/8.9.3) with ESMTP id f16NDY350636; Tue, 6 Feb 2001 15:13:34 -0800 (PST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <3A807C86.DFD3F274@acm.org> Date: Tue, 06 Feb 2001 15:14:37 -0800 (PST) From: John Baldwin To: Jim Bloom Subject: Re: Kernel Panic from Yesterday's CVSup Cc: current@FreeBSD.org Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 06-Feb-01 Jim Bloom wrote: > Which kernel do you want me to try this with? I have tried two > different kernels with two different errors. (Both have been sent at > different times in the past couple days.) The registers listed here > from the second kernel (with WITNESS, INVARIANTS, INVARIANT_SUPPORT, > MUTEX_DEBUG). As such the addresses disagree (sw1b has 8 more bytes for > invariants), but the text segment was correct. You'll have to turn off WITNESS to get it to die in cpu_switch(), but you'll want to leave the others on for now. > Without debug, I get the trap 9. With debug, I get a trap 12 > immediately followed by a panic with mutex shced lock recursion. > > I rebuilt the kernel with out the debugging and check the state of > things. The code is correct and the esi register had the expected > value. Hmmmmmmmm. Ok, try with debugging minus WITNESS (and you don't want MUTEX_DEBUG, that slows things down a _lot_). Then see if %esi is still 0x100 instead of 0x20. If so, then check the instructions to make sure they aren't hosed. > P.S. I am hitting the same problem Robert Watson mentioned. I don't > have room for three kernels on the machine. Yes. :( The default / size for -current is not very good, as development boxes need more room on / than production boxes. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message