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Date:      Fri, 19 Feb 2010 00:24:28 +0300
From:      Slawa Olhovchenkov <slw@zxy.spb.ru>
To:        Pyun YongHyeon <pyunyh@gmail.com>
Cc:        Nick Rogers <ncrogers@gmail.com>, stable@freebsd.org
Subject:   Re: trap 12: page fault while in kernel mode on 8.0-RELEASE (possibly bge(4) related)
Message-ID:  <20100218212428.GJ55307@zxy.spb.ru>
In-Reply-To: <20100218193612.GB11675@michelle.cdnetworks.com>
References:  <147432021002141004o6c1412b7gd548b87709532ef9@mail.gmail.com> <20100216175719.GB1394@michelle.cdnetworks.com> <20100218143822.GA8380@zxy.spb.ru> <20100218193612.GB11675@michelle.cdnetworks.com>

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On Thu, Feb 18, 2010 at 11:36:12AM -0800, Pyun YongHyeon wrote:

> On Thu, Feb 18, 2010 at 05:38:22PM +0300, Slawa Olhovchenkov wrote:
> > On Tue, Feb 16, 2010 at 09:57:19AM -0800, Pyun YongHyeon wrote:
> > 
> > > On Sun, Feb 14, 2010 at 10:04:58AM -0800, Nick Rogers wrote:
> > > > I'm having repeated kernel panic issues on 8.0-RELEASE/amd64. Can anyone
> > > > shed light on the below error? I unfortunately cannot provide a proper crash
> > > > dump. The pointer addresses are always the same. The only other thing I've
> > > > noticed that may be related is a watchdog timeout on bge0 error before the
> > > > panic. Thanks.
> > > > 
> > > 
> > > Any chance to get backtrace from the crash?
> > 
> > I got same trouble on the same platform (8.0-STABLE/amd64).
> > hw.bge.allow_asf=0 already
> > 
> > I got 2 proper crash dump (first w/ net.inet.ip.forwarding=1
> > and second w/ net.inet.ip.forwarding=0).
> > 
> 
> It looks like mbuf pointer was changed to NULL in the middle of IP
> forwarding and IP fragment stage. If bge(4) frees passed mbufs this
> may happen but I'm not sure this comes from bge(4).
> By chance, are you using polling(4) on bge(4)? Also show me the

I am not using polling.

> dmesg output(only bge(4) related one).

dmesg from boot:

bge0: <HP NC7782 Gigabit Server Adapter, ASIC rev. 0x002100> mem 0xfdf70000-0xfdf7ffff irq 25 at device 2.0 on pci2
miibus0: <MII bus> on bge0
brgphy0: <BCM5704 10/100/1000baseTX PHY> PHY 1 on miibus0
brgphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
bge0: Ethernet address: 00:14:c2:3d:e5:52
bge0: [ITHREAD]
bge1: <HP NC7782 Gigabit Server Adapter, ASIC rev. 0x002100> mem 0xfdf60000-0xfdf6ffff irq 26 at device 2.1 on pci2
miibus1: <MII bus> on bge1
brgphy1: <BCM5704 10/100/1000baseTX PHY> PHY 1 on miibus1
brgphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
bge1: Ethernet address: 00:14:c2:3d:e5:51
bge1: [ITHREAD]
bge1: link state changed to UP
bge0: link state changed to UP

Nothing in dmesg before trap.

-- 
Slawa Olhovchenkov



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