From mark@linus.demon.co.uk  Wed Jun 28 16:13:59 1995
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Date: Wed, 28 Jun 1995 01:56:02 +0100
From: Mark Valentine <mark@linus.demon.co.uk>
Reply-To: mark@linus.demon.co.uk
To: FreeBSD-gnats-submit@freebsd.org
Subject: hang when interrupting tcpdump on dismantled ppp interface
X-Send-Pr-Version: 3.2

>Number:         574
>Category:       kern
>Synopsis:       hang when interrupting tcpdump on dismantled ppp interface
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 28 16:20:00 1995
>Closed-Date:    Sat Aug 12 16:55:28 PDT 1995
>Last-Modified:  Sat Aug 12 16:59:22 PDT 1995
>Originator:     Mark Valentine
>Release:        FreeBSD 2.0-BUILT-19950526 i386
>Organization:
>Environment:

	486DX/66, ISA, 16MB, using sd0 on an AHA1542C.
	FreeBSD-current of about a week ago (2.0-BUILT-19950617), with
	XFree86 3.1.1; kernel ppp driver with pppd 2.1.2; single ppp0
	interface (modem on ttyd1), no ethernet interfaces.

>Description:

	I've experienced a system hang (no console response) a couple
	of times now, and I think the circumstances were the same.  Both
	times I interrupted tcpdump after taking the interface (ppp0) down.
	I'm running under X.

>How-To-Repeat:

	Bring up ppp0; start tcpdump; bring down ppp0; ^C tcpdump.  The
	system freezes immediately.

>Fix:
	
	Sorry, I haven't investigated.

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: peter 
State-Changed-When: Sat Aug 12 16:55:28 PDT 1995 
State-Changed-Why:  
Fixed in v1.10 of bpf.c a while ago which was intended for PR#522 
Noted and verified by the submitter (Mark Valentine) 
>Unformatted:


