From toasty@home.dragondata.com  Wed May 13 09:19:40 1998
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Date: Wed, 13 May 1998 11:19:38 -0500 (CDT)
From: toasty@home.dragondata.com
Reply-To: toasty@home.dragondata.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: non-root user can crash system if disconnected de card present
X-Send-Pr-Version: 3.2

>Number:         6623
>Category:       kern
>Synopsis:       non-root user can crash system if disconnected de card present
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed May 13 09:20:01 PDT 1998
>Closed-Date:    Fri Nov 16 15:45:24 PST 2001
>Last-Modified:  Fri Nov 16 15:45:41 PST 2001
>Originator:     Kevin Day
>Release:        FreeBSD 2.2.5-STABLE i386
>Organization:
DragonData Internet Services
>Environment:

2.2.6 server with two de cards in it. de1 was 'down'... (hub went down, and
the card complained of a 'cable problem?')

>Description:

After a de device has decided it can't talk, you can make a server instantly
reboot (no panic)

ping -s 2048 (hostname of a server across the dead de card)...

For a while you'll get 'ping: sendto: host is down'. Then if you keep going,
'ping: sendto: no buffer space available'... (at this point, my de0 card
stopped responding as well). After a few more minutes, the machine just
rebooted.

>How-To-Repeat:

Unplug the cable to a de card, and send lots of traffic to it. (ifconfig
must still show the interface as 'up').

Also... Why after a card decides theres a cable problem will it not detect
the cable being put back in until you do a 'ifconfig de0 down'. (as soon a
syou type that, it suddenly sees the cable again) These are netgear 10/100
cards...

de0: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 19 on pci0.17.0
de0: 21140A [10-100Mb/s] pass 2.2

>Fix:
	

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: dd 
State-Changed-When: Sat Jun 9 16:16:26 PDT 2001 
State-Changed-Why:  
Is this still a problem with more recent releases?  I can't reproduce 
it with -current here. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=6623 
State-Changed-From-To: feedback->closed 
State-Changed-By: bmah 
State-Changed-When: Fri Nov 16 15:45:24 PST 2001 
State-Changed-Why:  
Feedback timeout (5+ months). 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=6623 
>Unformatted:
Kevin Day
