X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:mime-version:date:message-id:subject:from:to
	:content-type; q=dns; s=default; b=VtSq9qMaXQhqszmQauEP5Tk8Guu2l
	daAbVzymeuKe0FkxqyC6PEteSZKafsQ2bqkVsp81umN2V/BSMl4SPNqo5H3D6bi+
	/oTCbKaznH+/iaEIDCgD+nffLP4GMcESJpBrjxymFg9lIIqPcNXKKAE7DdOeCu9q
	CiVpBoLp+cR8RI=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:mime-version:date:message-id:subject:from:to
	:content-type; s=default; bh=8chxnzpfCloTLPEJjvh6/wenZ7s=; b=JXk
	7tZNlhkJ1VpJNCy5a65KGj5LVTnLhPi3JocI0TLeR/DCBSz3CbOA40Yi2wXiE9IT
	tTYsiASOaSf7ewgDHw1iRJjpIMVdkFXiffccUcjv0TWj899XO9omlPEmqZ8NEn68
	nBLl0H4Nj6mzetTs36ouSDidHyk4xP8WYdWaQRkE=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=1.9 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,KAM_FROM_URIBL_PCCC,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=no version=3.3.2
X-HELO:	mail-qg0-f48.google.com
MIME-Version:	1.0
X-Received:	by 10.140.35.240 with SMTP id n103mr26015473qgn.11.1423855199075; Fri, 13 Feb 2015 11:19:59 -0800 (PST)
Date:	Fri, 13 Feb 2015 14:19:59 -0500
Message-ID:	<CAEF1h+WwOwUWg6-zXnJ-uGqQBW=3dM4L0bJczawjTb-3vNfdZw@mail.gmail.com>
Subject:	ssh / sshd processes not exiting cleanly
From:	Cary Lewis <cary DOT lewis AT gmail DOT com>
To:	cygwin AT cygwin DOT com
X-IsSubscribed:	yes

I am running cygwin 1.7.34 on a server 2008R2 machine.

I have installed sshd and it seems to run fine (I can log in), but
when I try to exit, the ssh session doesn't terminate. I can force it
to exit by hitting Enter~., but that leaves a defunct sshd.exe lying
around.

When I enter in exit from a ssh session (logging in locally
automatically), I see this in the sshd log (I enabled DEBUG2 and
syslog):

Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug1: Received SIGCHLD.
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug1: session_by_pid: pid 4992
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug1:
session_exit_message: session 0 channel 0 pid 4992
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0:
request exit-status confirm 0
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug1:
session_exit_message: release channel 0
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0: write failed
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0: close_write
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0: send eow
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0: output
open -> closed
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug1:
session_pty_cleanup: session 0 release /dev/pty10
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: notify_done: reading
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0:
read<=0 rfd 8 len 0
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0: read failed
Feb 13 14:14:21 ENGAGEIP-PRD sshd: PID 7064: debug2: channel 0: close_read

I dont see anything else in the log when I force the exit of the ssh
session with the
~.

Can someone explain what is going on?

Here is part of the cygcheck -s:

  Cygwin DLL version info:
        DLL version: 1.7.34
        DLL epoch: 19
        DLL old termios: 5
        DLL malloc env: 28
        Cygwin conv: 181
        API major: 0
        API minor: 285
        Shared data: 5
        DLL identifier: cygwin1
        Mount registry: 3
        Cygwin registry name: Cygwin
        Installations name: Installations
        Cygdrive default prefix:
        Build date:
        Shared id: cygwin1S5

Service             : sshd
Display name        : CYGWIN sshd
Current State       : Running
Controls Accepted   : Stop
Command             : /usr/sbin/sshd -D

openssh                   6.7p1-2            OK
openssl                   1.0.1k-1           OK

I don't see this behaviour on my Windows 7 machines/

Thanks.

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -