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Date:      Thu, 30 Nov 2006 00:24:31 +0800
From:      "Rong-en Fan" <grafan@gmail.com>
To:        "Kevin Oberman" <oberman@es.net>
Cc:        markus@x-trader.de, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>
Subject:   Re: Panic in "thread taskq" on RELENG_6
Message-ID:  <6eb82e0611290824q7386c85asce80d19c3fd6f45e@mail.gmail.com>
In-Reply-To: <20061128204402.A8C5D45051@ptavv.es.net>
References:  <20061128190106.1D6B313283@qhmail2.colt1.inetserver.de> <20061128204402.A8C5D45051@ptavv.es.net>

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On 11/29/06, Kevin Oberman <oberman@es.net> wrote:
> > From: "=?iso-8859-1?Q?Markus_Oestreicher?=" <markus@x-trader.de>
> > Date: Tue, 28 Nov 2006 20:01:06 +0100
> > Sender: owner-freebsd-stable@freebsd.org
> >
> > Good Day,
> >
> > I get a panic on latest RELENG_6 every 6-12 hours. The server is a
> > Dual Xeon FSB800 with 2 GB RAM and aac(4)-disks running postfix and
> > amavisd-new for SPAM scanning.
> >
> >
> > kernel trap 12 with interrupts disabled
> >
> > Fatal trap 12: page fault while in kernel mode
> > cpuid = 3; apic id = 07
> > fault virtual address         = 0x104
> > fault code            = supervisor read, page not present
> > instruction pointer   = 0x20:0xc06774e1
> > stack pointer         = 0x28:0xe4f93c90
> > frame pointer         = 0x28:0xe4f93c9c
> > code segment          = base 0x0, limit 0xfffff, type 0x1b
> >                               = DPL 0, pres 1, def32 1, gran 1
> > processor eglags              = resume, IOPL = 0
> > current process               = 5 (thread taskq)
> >
> > The panic always in process "thread taskq".
> >
> > db>trace
> > _mit_lock_sleep(cb031e5c,c63f7180) at _mtx_lock_sleep+0x9d
> > unp_gc(0,1) at uno_gc+0x222
> > taskqueue_run(c6439d80) at taskqueue_run+0x13f
> > taskqueue_thread_loop(c09f8988,e4f93d38) at taskqueue_thread_loop+0x> 92
> > fork_exit(c06a1bc0,c09f8988,e4f93d38) at fork_exit+0x71
> > fork_trampoline() at fork_trampoline+0x8
> > --- trap 0x1, eip = 0, esp=0xe4f93d6c, ebp = 0
> >
> > FreeBSD mx.local 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #1:
> >  Tue Nov 28 02:12:58 CET 2006
> >  root@mx.local:/usr/obj/usr/src/sys/SMP  i386
> >
> >
> > Does that look like a hardware problem or a software issue?
> > I will try to swap RAM in the next few days.
>
> You are the third person to report this panic. (I am one of the other
> two.

I reported unp_gc() panic recently. See
"Re: LOR (intr table and sio) and instability" on stable@.
jhb@ told me that he also saw this and there is currently no
fix yet.

Regards,
Rong-En Fan

>
> I am guessing from the name of your kernel that this is an SMP
> system. So are the other two.
>
> Are you running gnome-2.16 with hald? This is about all we found
> in common on the first two systems.
>
> Robert Watson would like some added data. Can you build a kernel with
> the following options and connect something to the serial port to record
> output?
> options WITNESS
> options INVARIANT_SUPPORT
> options DDB
> options KDB
> options INVARIANTS
>
> At the debugger prompt:
> > show pcpu
> > trace
> > show allpcpu
> > traceall
> > show alllocks
>
> At least my system has been totally uncooperative in crashing when I am
> anywhere near it, so I have not yet collected any information other than
> dumps.
> --
> R. Kevin Oberman, Network Engineer
> Energy Sciences Network (ESnet)
> Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
> E-mail: oberman@es.net                  Phone: +1 510 486-8634
> Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751
>
>
>



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