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Date: Wed, 5 Feb 1997 13:06:06 -0800 (PST)
From: arlie@thepoint.net
To: freebsd-gnats-submit@freebsd.org
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Subject: bin/2671: Run-away processes using all CPU time
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>Number:         2671
>Category:       bin
>Synopsis:       Run-away processes using all CPU time
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Feb  5 13:10:02 PST 1997
>Last-Modified:
>Originator:     Arlie Davis
>Organization:
ThePoint Internet Services, Inc.
>Release:        2.1.6.1
>Environment:
FreeBSD access.thepoint.net 2.1.6-RELEASE FreeBSD 2.1.6-RELEASE #0: Sun Jan 12 2
2:54:42  1997     root@access.thepoint.net:/usr/src/sys/compile/ACCESS  i386
>Description:
PPPD and several other programs apparently do not correctly receive the SIGHUP signal when a user hangs up on a serial line or closes a Telnet session.  This uses 100% of CPU time and renders the serial port useless until the process is noticed and killed.  This also happens with Lynx, Pine, vi, and other text-based programs (not just pppd).

This problem occurs under all versions of FreeBSD that I have tried, including 2.1.0, 2.1.5, 2.1.6, and 2.2-961014-SNAP.
>How-To-Repeat:
Dial in, start PPP session, hangup line WITHOUT notifying peer PPP process
>Fix:

>Audit-Trail:
>Unformatted: