From shmit@natasya.noc.erols.net  Thu Oct  8 20:04:03 1998
Received: from smtp3.erols.com (smtp3.erols.com [207.172.3.236])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA29706
          for <FreeBSD-gnats-submit@freebsd.org>; Thu, 8 Oct 1998 20:04:01 -0700 (PDT)
          (envelope-from shmit@natasya.noc.erols.net)
Received: from natasya.noc.erols.net (natasya.noc.erols.net [207.172.25.236])
	by smtp3.erols.com (8.8.8/8.8.5) with ESMTP id XAA24515
	for <FreeBSD-gnats-submit@freebsd.org>; Thu, 8 Oct 1998 23:03:54 -0400 (EDT)
Received: (from shmit@localhost)
	by natasya.noc.erols.net (8.9.1/8.9.1) id XAA15351;
	Thu, 8 Oct 1998 23:03:54 -0400 (EDT)
Message-Id: <199810090303.XAA15351@natasya.noc.erols.net>
Date: Thu, 8 Oct 1998 23:03:54 -0400 (EDT)
From: Brian Cully <shmit@rcn.com>
Reply-To: shmit@rcn.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: Panic in tulip driver.
X-Send-Pr-Version: 3.2

>Number:         8221
>Category:       kern
>Synopsis:       Panic in tulip driver.
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Oct  8 20:10:00 PDT 1998
>Closed-Date:    Fri Oct 16 12:51:13 PDT 1998
>Last-Modified:  Fri Oct 16 12:51:22 PDT 1998
>Originator:     Brian Cully
>Release:        FreeBSD 3.0-BETA i386
>Organization:
>Environment:

FreeBSD natasya.noc.erols.net 3.0-BETA FreeBSD 3.0-BETA #0: Tue Oct  6 17:28:47 EDT 1998     shmit@natasya.noc.erols.net:/usr/src/sys/compile/NATASYA  i386

>Description:

Under heavy network load the tulip driver panics like so:

Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0xefc00000
fault code		= supervisor read, page not present
instruction pointer	= 0x8:0xf01b6e69
stack pointer		= 0x10:0xf4aefd9c
frame pointer		= 0x10:0xf4aefdd0
code segment		= base 0x0, limit 0xffff, type 0x1b
			= DPL0, pres 1, def32 1, gran 1
processor eflags	= interrupt enabled, resum, IOPL = 0
current process		= 260 (cvsup)
interrupt mask		= net
kernel: type 12 trap code = 0
Stopped at	_tulip_txput+0x111:	movl _PTmap(,%eax,4),%edx
db> trace
_tulip_txput [blah blah]
_tulip_ifstart_one
_ether_output
_ip_output
_tcp_output
_tcp_input
_ipintr
swi_net_next()

I don't know how useful this dump is, but it's been the cause of a lot
of panics on my machine, and has been for the last couple of months.

>How-To-Repeat:

>Fix:
	I wish I could do that.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: jkh 
State-Changed-When: Fri Oct 16 12:51:13 PDT 1998 
State-Changed-Why:  
Closed at author's request 
>Unformatted:
