Date: Wed, 10 Jul 2002 10:02:32 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: "Chris J. Mutter" <cjm@satanii.enemy.org> Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: kernel trap on a AlphaServer 400 Message-ID: <15660.15992.992752.254928@grasshopper.cs.duke.edu> In-Reply-To: <200207080855.g688tqvt088710@satanii.enemy.org> References: <200207080855.g688tqvt088710@satanii.enemy.org>
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Chris J. Mutter writes:
> Hello list,
>
> i upgraded from 4.5-RELEASE-p2 to 4.6-RELEASE-p1 on my main
> shellbox. 4.5 ran without any troubles for weeks. and now i got a
> kernel trap after 4days uptime:
>
> --snip--
> fatal kernel trap:
>
> trap entry = 0x4 (unaligned access fault)
> a0 = 0xfffffe000177f17f
> a1 = 0x29
> a2 = 0x1
> pc = 0xfffffc0000372e9c
> ra = 0xfffffc0000368414
> curproc = 0xfffffe000d87cc40
> pid = 387, comm = sendmail
>
> panic: trap
>
> syncing disks... 10
> done
> Uptime: 4d10h48m38s
> Automatic reboot in 15 seconds - press a key on the console to abort
> Rebooting...
> Copyright (c) 1992-2002 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
> The Regents of the University of California. All rights reserved.
> FreeBSD 4.6-RELEASE-p1 #0: Tue Jul 2 12:00:48 CEST 2002
> root@satanii.enemy.org:/usr/obj/usr/src/sys/S2
> AlphaStation 200/400 ("Avanti")
> AlphaServer 400 4/60, 166MHz
> 8192 byte page size, 1 processor.
> CPU: EV4 (21064) major=2 minor=0
> OSF PAL rev: 0x100000002012e
> --snip--
>
> anything i could do against it? (i have no debugging options in the
> kernel). nothing changed on the hardware side. i had to upgrade because
> of the latest libc security changes (resolver bug).
For a full stack trace, add ddb to your kernel (see i386/conf/LINT).
For a stack trace with gdb after the crash, you can enable crashdumps.
At the very least, run configure with -g, and build a kernel with
symbols. The run gdb on that kernel and do list *faulting_address.
Eg, list *0xfffffc0000372e9c
Drew
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