From owner-freebsd-current Tue Aug 22 12:55: 2 2000 Delivered-To: freebsd-current@freebsd.org Received: from falla.videotron.net (falla.videotron.net [205.151.222.106]) by hub.freebsd.org (Postfix) with ESMTP id 0BDAF37B42C for ; Tue, 22 Aug 2000 12:54:54 -0700 (PDT) Received: from modemcable136.203-201-24.mtl.mc.videotron.net ([24.201.203.136]) by falla.videotron.net (Sun Internet Mail Server sims.3.5.1999.12.14.10.29.p8) with ESMTP id <0FZP00BNWLK771@falla.videotron.net> for freebsd-current@FreeBSD.ORG; Tue, 22 Aug 2000 15:45:43 -0400 (EDT) Date: Tue, 22 Aug 2000 15:48:46 -0400 (EDT) From: Bosko Milekic Subject: Re: Kernel panic on fxp In-reply-to: <39A2A70D.E1198B31@whetstonelogic.com> X-Sender: bmilekic@jehovah.technokratis.com To: Patrick Gardella Cc: freebsd-current@FreeBSD.ORG Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG PLEASE read this: http://www.freebsd.org/FAQ/hackers.html#AEN4885 Basically, by just looking at the page fault message, this appears to be the dereferencing of a NULL pointer. That's all that I'm afraid pretty much anybody will be able to conclude from this unless you, at least, provide us with a backtrace as well as an assembly dump of whatever function the crash occured in. On Tue, 22 Aug 2000, Patrick Gardella wrote: > I've been working for a while to try to figure out a problem I'm having > here. > > I did a buildworld Sunday, and started to get kernel panics on boot when > it probed fxp. So I removed fxp from my kernel and loaded it as a > module (via loader.conf.local). It paniced. Then I unloaded the > if_fxp.ko on startup, and it booted. But if I load the fxp module now, > after a full boot, everything is great. Rebooting with fxp in the > kernel or loading the module on boot will cause a panic *every* time. > > Thinking it might be build problem, I redid the build/install/kernel > again on Monday, and am having the same problems. The panics only > started on the upgrade from a -current dated sometime in early July. > > As you will see from below, this is an SMP machine (dual P200) with 256 > Megs RAM. > I am also using NETGRAPH to run PPPoE. > > Any ideas? > > Patrick > > The panic is: > Fatal trap 12: page fault while in kernel mode > mp_lock=00000005; cpuid = 0; lapic.id=00000000 > fault virtual address = 0x0 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc034e304 > stack pointer = 0x10:0xc038bea8 > frame pointer = 0x10=0xc038bebc > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPC 0, pres 1, def 32 1, gran 1 > processor eflag = interrupt enabled, resume, IOPC=0 > current process = 0 (swapper) > interrupt mask = net tty bio cam <- SMP:XXX > trap number = 12 > panic: page fault Cheers, Bosko. -- Bosko Milekic * Voice/Mobile: 514.865.7738 * Pager: 514.921.0237 bmilekic@technokratis.com * http://www.technokratis.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message