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Date:      Tue, 2 Jun 1998 00:59:08 -0700
From:      John-Mark Gurney <gurney_j@efn.org>
To:        The Hermit Hacker <scrappy@hub.org>
Cc:        "Kenneth D. Merry" <ken@plutotech.com>, freebsd-current@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG
Subject:   Re: May29th kernel with May20th CAM drivers: panic?
Message-ID:  <19980602005908.13903@hydrogen.nike.efn.org>
In-Reply-To: <Pine.BSF.3.96.980531182600.448F-100000@hub.org>; from The Hermit Hacker on Sun, May 31, 1998 at 06:29:28PM -0400
References:  <199805312220.QAA04786@panzer.plutotech.com> <Pine.BSF.3.96.980531182600.448F-100000@hub.org>

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The Hermit Hacker scribbled this message on May 31:
> On Sun, 31 May 1998, Kenneth D. Merry wrote:
> 
> > The Hermit Hacker wrote...
> > > 
> > > Hi...
> > > 
> > > 	I'm not going to bother submitting a problem report on this,
> > > mainly because I don't even have a core to analyze, but I figured I'd at
> > > least put a 'head up' on this, in case this anything to someone...
> > > 
> > > 
> > > Fatal trap 12: page fault while in kernel mode
> > > fault virtual address   = 0xefcb5b1c
> > > fault code              = supervisor read, page not present
> > > instruction pointer     = 0x8:0xf01a88ad
> > > stack pointer           = 0x10:0xf6951af4
> > > frame pointer           = 0x10:0xf6951b28
> > > code segment            = base 0x0, limit 0xfffff, type 0x1b
> > >                         = DPL 0, pres 1, def32 1, gran 1
> > > processor eflags        = interrupt enabled, resume, IOPL = 0
> > > current process         = 7011 (innfeed)
> > > interrupt mask          = net bio
> > > kernel: type 12 trap, code=0
> > > Stopped at      _tulip_txput+0x111:     movl    _PTmap(,%eax,4),%edx
> > 
> > 
> > 	tulip_txput() is in the DEC 2114x driver. 
> 
> 	Hrmmm...are there any known problems with the 2114x driver?  I do
> see the following periodically:
> 
> de0: abnormal interrupt: transmit underflow (raising TX threshold to
> 96|256)
> de0: abnormal interrupt: transmit underflow (raising TX threshold to
> 8|512)
> 
> 	On:
> 
> de0: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 9 on pci0.10.0
> de0: 21140A [10-100Mb/s] pass 2.2
> de0: address 00:60:67:30:75:ef
> 
> 	In 100Mb/s mode...

actually, I'm running -stable and I keep getting:
de0: abnormal interrupt: transmit underflow
de0: receive: 08:00:09:39:2b:b8: bad crc

but I see the bad crc's from multiple machines, it just depends upon the
amount of traffic from that machine, I even get them from the cisco
router.... I didn't get these messages when I had a ne2k clone in the
machine...

de0 <Digital 21041 Ethernet> rev 17 int a irq 11 on pci0:10:0
de0: 21041 [10Mb/s] pass 1.1
de0: address 00:80:19:35:21:93

it works great besides the 1second lockups when a transmit underflow
happen...

the machine is nothing special...  k6-200, 48megs ram, buslogic scsi..

-- 
  John-Mark Gurney                      Modem Rev/FAX: +1 541 346 9237
  Cu Networking					  P.O. Box 5693, 97405

  Live in Peace, destroy Micro$oft, support free software, run FreeBSD
	    Don't trust anyone you don't have the source for

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