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Date:      Wed, 11 Jun 2008 13:46:38 -0500
From:      eculp <eculp@casasponti.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: reboot after panic : page fault for two consecutive days now with FreeBSD stable 7.0
Message-ID:  <20080611134638.17855qkovcmssi04@intranet.casasponti.net>
In-Reply-To: <20080611133220.198644ite5u5r778@intranet.casasponti.net>
References:  <20080611133220.198644ite5u5r778@intranet.casasponti.net>

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Quoting eculp <eculp@casasponti.net>:

> This is on a relatively new Dell dualcore with 4G of ram running up =20
> to date stable.  I'm not on site so I have no idea what might be =20
> provoking these crashes.  In fact in many years of running FreeBSD =20
> I've not seen something just happen like this.  It is a =20
> simi-production machine that cvsups daily and builds and installs a =20
> new world and kernel.  Ports are updated about once a week and =20
> haven't seen any issues previously.  It has been running 24/7 since =20
> new, about 8 months.
>
> 3 files were generated info, bounds and vmcore.  The info file follows:
>
> Dump header from device /dev/mfid0s1b
>   Architecture: i386
>   Architecture Version: 2
>   Dump Length: 341225472B (325 MB)
>   Blocksize: 512
>   Dumptime: Wed Jun 11 12:34:24 2008
>   Hostname: casasponti.net
>   Magic: FreeBSD Kernel Dump
>   Version String: FreeBSD 7.0-STABLE #258: Tue Jun 10 05:54:42 CDT 2008
>     root@casasponti.net:/usr/obj/usr/src/sys/ENCONTACTO
>   Panic String: page fault
>   Dump Parity: 2395754794
>   Bounds: 2
>   Dump Status: good
>
> the vmcore is about 300M so I'm not attaching it;) I could put it on =20
> line at a moments notice.  I think that what I need is probably a =20
> crash course on debugging a crash and I really don't know where to =20
> start since after over 10 years with freebsd I've never needed it.  =20
> Any help, suggestions, etc. would be greatly appreciated.

Forgot I did try to debug but got nowhere:

/usr/obj/usr/src/sys/ENCONTACTO # kgdb kernel.debug /var/crash/vmcore.2
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions=
.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
Cannot access memory at address 0x0
(kgdb)

Ignorance, I'm sure.
>
> Thanks,
>
> ed
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