From owner-freebsd-arm@FreeBSD.ORG Fri Nov 1 22:02:44 2013 Return-Path: Delivered-To: freebsd-arm@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id A4E10C57 for ; Fri, 1 Nov 2013 22:02:44 +0000 (UTC) (envelope-from ian@FreeBSD.org) Received: from mho-02-ewr.mailhop.org (mho-02-ewr.mailhop.org [204.13.248.72]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 7A3E72B63 for ; Fri, 1 Nov 2013 22:02:44 +0000 (UTC) Received: from c-24-8-230-52.hsd1.co.comcast.net ([24.8.230.52] helo=damnhippie.dyndns.org) by mho-02-ewr.mailhop.org with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1VcMnc-000FoE-UF; Fri, 01 Nov 2013 22:02:37 +0000 Received: from [172.22.42.240] (revolution.hippie.lan [172.22.42.240]) by damnhippie.dyndns.org (8.14.3/8.14.3) with ESMTP id rA1M2YYs057414; Fri, 1 Nov 2013 16:02:34 -0600 (MDT) (envelope-from ian@FreeBSD.org) X-Mail-Handler: Dyn Standard SMTP by Dyn X-Originating-IP: 24.8.230.52 X-Report-Abuse-To: abuse@dyndns.com (see http://www.dyndns.com/services/sendlabs/outbound_abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX18g3CJIrGE9XfejhHwGQEyG Subject: Re: sshd crash From: Ian Lepore To: Jia-Shiun Li In-Reply-To: References: <1383313834.31172.65.camel@revolution.hippie.lan> <1383328423.31172.92.camel@revolution.hippie.lan> Content-Type: text/plain; charset="us-ascii" Date: Fri, 01 Nov 2013 16:02:34 -0600 Message-ID: <1383343354.31172.102.camel@revolution.hippie.lan> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit Cc: "freebsd-arm@freebsd.org" , Howard Su X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Nov 2013 22:02:44 -0000 On Sat, 2013-11-02 at 02:40 +0800, Jia-Shiun Li wrote: > On Sat, Nov 2, 2013 at 1:53 AM, Ian Lepore wrote: > > On Sat, 2013-11-02 at 01:44 +0800, Jia-Shiun Li wrote: > >> may I add: putty causes this to happen. mine 0.62. But ssh from another > >> FreeBSD host has no problem. > >> > >> I suspect it to be some issues related to memory or malloc issues > >> specific to bbb. 'tmux a -d' without existing detached sessions > >> causes tmux client to core dump. But sshd and it are both fine on rpi. > >> > >> -Jia-Shiun. > > > > This is the first I've heard of being able to ssh to an arm platform > > that doesn't have PrivSep disabled, since about July or so. I've never > > heard a report yet that anything on the client side could make a > > difference. > > > > It's definitely not a beaglebone thing, it happens on every arm board > > I've got... dreamplug, rpi, bbw, imx53, wandboard. > > > Ok let me make sure I did not mix things up. ;) > > IIRC I once saw similar issue on rpi shortly. But after another > weekly update it was gone. I did not pay too much attention on rpi, > and thought it was bbb specific. > > I did not change sshd_config, UsePrivilegeSeparation supposed > remaining on as default is. > > sshd logs attached initiating ssh to bbb from: > - PuTTY on Windows w/ key auth, > - PuTTY on Windows w/ password auth, and > - (open)ssh on rpi > > Both rpi & bbb are now running r257094: > --- 8< --- > jsli@beaglebone:~ % uname -a > FreeBSD beaglebone 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r257094: Sat > Oct 26 03:06:24 CST 2013 > jsli@4cbsd:/root/crochet-freebsd/work/obj/arm.armv6/usr/src/sys/BEAGLEBONE > arm > jsli@beaglebone:~ % > > jsli@raspberry-pi:~ % uname -a > FreeBSD raspberry-pi 11.0-CURRENT FreeBSD 11.0-CURRENT #2 r257094: Sat > Oct 26 00:16:37 CST 2013 > jsli@4cbsd:/rpi/obj/arm.armv6/usr/src/sys/RPI-B arm > jsli@raspberry-pi:~ % > --- 8< --- > > -Jia-Shiun. Okay, I can confirm that the client you use makes a difference in some way. With privsep enabled on my BBW I get the jemalloc assert on the server when connecting from an older client, including both of these: x86 - OpenSSH_5.4p1 FreeBSD-20100308, OpenSSL 0.9.8q 2 Dec 2010 arm - OpenSSH_5.4p1_hpn13v11 FreeBSD-20100308, OpenSSL 0.9.8q 2 Dec 2010 The x86 system is running 8.3 and the arm system 8.2. When using my rpi to connect to the bb, it works. Its version is: OpenSSH_6.3p1, OpenSSL 1.0.1e-freebsd 11 Feb 2013 I have no idea what all this means, but it is the first new datapoint we've had for a while. -- Ian