From owner-freebsd-stable Tue Oct 23 20:54: 9 2001 Delivered-To: freebsd-stable@freebsd.org Received: from topperwein.dyndns.org (acs-24-154-28-168.zoominternet.net [24.154.28.168]) by hub.freebsd.org (Postfix) with ESMTP id 8FDE337B403 for ; Tue, 23 Oct 2001 20:54:04 -0700 (PDT) Received: from topperwein.dyndns.org (topperwein.dyndns.org [192.168.168.10]) by topperwein.dyndns.org (8.11.6/8.11.6) with ESMTP id f9O3sJm24534 for ; Tue, 23 Oct 2001 23:54:20 -0400 (EDT) (envelope-from behanna@zbzoom.net) Date: Tue, 23 Oct 2001 23:54:14 -0400 (EDT) From: Chris BeHanna Reply-To: Chris BeHanna To: FreeBSD-Stable Subject: Re: [HARD CRASH] gdb output - what is it saying? In-Reply-To: <20011023135935.ZKUW16766.fepD.post.tele.dk@there> Message-ID: <20011023234256.M24271-100000@topperwein.dyndns.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Content-ID: <20011023234256.V24271@topperwein.dyndns.org> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, 23 Oct 2001, Bjarne Wichmann Petersen wrote: > On Tuesday 23 October 2001 04:37, Greg Lehey wrote: > > > If I could read it, it would help. You shouldn't wrap computer > > output. > > Sorry... > > > If you follow up, please send the output as it comes, and > > make the output in hex. > > Hmm... I'm not familiar with gdb. I've tried to look through the man-pages > and gdb's help-pages but didn't find any reference on how to set the output > to hex. > > > This is a puzzling dump. Have you any specialized timer hardware or > > software on your machine? > > Not to my knowledge. I've attached my dmesg. I do have a vague > suspecion that it's somehow related to my graphicscard. The first > spontaneous crash happened 2 weeks ago after I upgraded to XFree > 4.1, installed drm-kmod and startet testing mplayer's > dvd-capabilities. DRI is enabled. I've had trouble with drm-kmod. To wit, when I kldunload the modules in reverse order of loading, I get a fatal trap 12 when I unload radeon.ko (I have a Radeon QD board in my box, on an AMD 761 ("Irongate")-based motherboard). I see from your dmesg that you're running a board with a VIA chipset. Is this an A7M266? There are issues with that board and XFree86 4.1.0 when you try to use agpgart, drm, and DRI, according to some mail I got off-list. I certainly haven't had any luck using drm-kmod and DRI on my Radeon/Irongate combination. > The occurence have been by playing DVDs through mplayer (using xvideo), > testing q3arena, twice in console after some idle-time (eg. > screensaver/blanker activated) when pressing a key. 1 or 2 occasion I can't > relate directly with graphics. With drm-kmod disabled (disable the startup script, force umount of everything but /, and reboot), I still managed to crash my machine using XFree86 4.1.0 and vlc (with XVideo output), but only if I also had a VMWare instance up at the time. Alas, no crashdump is available from that crash > Since then I've recompiled/reinstalled X, drm-kmod, kernel, "world", and all > X-related apps (eg. mplayer, KDE2.2 etc.). Still crashes. > > > Is the dump repeatable? > > Yes, playing a DVD with mplayer after 1-60 min I get a crash. Can you also crash it with vlc? If you get a crashdump, just cd'ing to where your kernel.debug lives, doing gdb -k ./kernel.debug /var/crash/vmcore.n gdb> where should be sufficient to give Greg (and other developers) some information to get started. They can then send you other commands for you to run to further examine the crash. If you don't have a kernel.debug (should be in /usr/obj/usr/src/sys/YOURKERNELNAME if you have "makeoptions DEBUG=-g" in your kernel config--also add "options DDB" and "options DDB_UNATTENDED" to get the dump but still allow an automatic reboot). If you're really brave and if you have a NULL modem cable and a spare computer, you can also add "options GDB_REMOTE_CHAT" to your kernel and debug the live kernel with a serial console. -- Chris BeHanna Software Engineer (Remove "bogus" before responding.) behanna@bogus.zbzoom.net I was raised by a pack of wild corn dogs. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message