From gpalmer@morton.cdrom.com  Tue May  2 05:22:48 1995
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Date: Tue, 2 May 1995 05:24:01 -0700
From: Gary Palmer <gpalmer@morton.cdrom.com>
Reply-To: gpalmer@morton.cdrom.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: tcpdump seems to cause spontaneous reboots
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>Number:         376
>Category:       kern
>Synopsis:       tcpdump seems to cause spontaneous reboots
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    gpalmer
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May  2 05:30:01 1995
>Closed-Date:    Wed Feb 7 23:58:04 PST 1996
>Last-Modified:  Thu Feb  8 00:08:56 PST 1996
>Originator:     Gary J Palmer
>Release:        FreeBSD 2.1.0-Development i386
>Organization:

Walnut Creek CDROM

>Environment:

Any machine with a relatively recent kernel and the bpf compiled into the 
kernel on an active network.

>Description:

tcpdump seems to cause random reboots on active IP networks. At least 3
different machines on WC's ethernets have suffered from this bug in the
last week. Using a filter seems to cause the bug to occur more rapidly.
(Judging from what David Greenman said last week in a different context
 the bpf when used by tcpdump is causing a kernel stack overflow).

>How-To-Repeat:

tcpdump

>Fix:
	
davidg      95/07/28 05:15:17

  Modified:    sys/i386/isa  if_ed.c
  Log:
  Fixed bug where a bogus packet length could cause a panic if the length
  was less than sizeof(struct ed_ring).

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: pst 
State-Changed-When: Wed Feb 7 15:44:46 PST 1996 
State-Changed-Why:  
Please verify that this bug has been fixed in 2.1 or later code. 


Responsible-Changed-From-To: freebsd-bugs->gpalmer 
Responsible-Changed-By: pst 
Responsible-Changed-When: Wed Feb 7 15:44:46 PST 1996 
Responsible-Changed-Why:  
State-Changed-From-To: feedback->closed 
State-Changed-By: olah 
State-Changed-When: Wed Feb 7 23:58:04 PST 1996 
State-Changed-Why:  
A fix has been committed. 
>Unformatted:


