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Date: Wed, 30 Aug 2000 17:45:35 +0200
From: petervd@vuurwerk.nl
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Subject: kern/20945: crashes on incoming TCP connects
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>Number:         20945
>Category:       kern
>Synopsis:       today's -STABLE kernel crashes after incoming 3way handshake
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Aug 30 08:50:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Peter van Dijk
>Release:        FreeBSD 4.1-STABLE i386
>Organization:
Vuurwerk Internet
>Environment:

Today's world+kernel (RELENG_4) on an SGI 1200 with 2 PIII-550s and 1GB
of RAM. Crashes occur equally with or without SMP in the kernel.

>Description:

I can do any kind of traffic without problems *except* accepting incoming
connections. Telnetting to port 22 or 23 of the box from another box
crashes the box. Console-switching still works, the box still pings,
new TCP connections are accepted but userland seems completely dead.

A august 25th kernel works, so the bug must've been introduced somewhere
over the last 5 days.

>How-To-Repeat:

cvsup to a /usr/src from today afternoon (GMT) and build a kernel. GENERIC
will do. Telnet to port 22 or 23.

>Fix:

I compiled a kernel on a box that was cvsupped around Aug 25th and
installed that kernel. No more problems. A 4.1-RELEASE GENERIC worked
flawlessly too.


>Release-Note:
>Audit-Trail:
>Unformatted:


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