From owner-freebsd-questions@freebsd.org Tue Sep 8 18:32:08 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EC381A00075 for ; Tue, 8 Sep 2015 18:32:08 +0000 (UTC) (envelope-from niklaas@kulturflatrate.net) Received: from mail2.kulturflatrate.net (mail.financecomm.com [178.63.105.5]) by mx1.freebsd.org (Postfix) with ESMTP id A95AB1DB5 for ; Tue, 8 Sep 2015 18:32:07 +0000 (UTC) (envelope-from niklaas@kulturflatrate.net) Received: from [IPv6:2a02:810c:840:3870:224:d7ff:feec:38e0] (unknown [IPv6:2a02:810c:840:3870:224:d7ff:feec:38e0]) (Authenticated sender: niklaas@kulturflatrate.net) by mail2.kulturflatrate.net (Postfix) with ESMTPSA id 3A94440075; Tue, 8 Sep 2015 20:32:00 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=kulturflatrate.net; s=default; t=1441737120; bh=OtgfIGZ9O/WY777KPpSbiSK1eYEZIrYBxTPB1cA9h2E=; h=Subject:To:References:Cc:From:Date:In-Reply-To; b=BDTuVqqvIkt0FIh/+nuxncTGLCFVc5h9puGxmUjudngQEqJVe2ArdG1xKsXWfOg8P 4IdFNHL5HuRaUqG3jTvRohlrhVPPf2M/PVR/AfNdEjqaOFCQF3BU9Ni+XOGA2SUM2q 7++t7G5LVdWBzSCXq5VFNYOAr+DIxgx9+1wwNrb4= Subject: Re: Jail causes host to reboot To: Kozlov Sergey References: <55E6E26A.1040706@kulturflatrate.net> <55E704D4.2050607@kulturflatrate.net> <55E74EC9.1060803@gmail.com> <55EDCACC.5080101@kulturflatrate.net> <55EF24B9.3070202@gmail.com> Cc: freebsd-questions@freebsd.org From: Niklaas Baudet von Gersdorff X-Enigmail-Draft-Status: N1110 Message-ID: <55EF2A12.1080405@kulturflatrate.net> Date: Tue, 8 Sep 2015 20:33:54 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <55EF24B9.3070202@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Sep 2015 18:32:09 -0000 On 08/09/15 20:11, Kozlov Sergey wrote: > Do you have a dumpdev configured in your rc.conf? Nope, unfortunately, I don't. Am I right that I should also read https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html ? :-) > Do you see any files in /var/crash? If yes - then it's a kernel panic > and you have the coredump. Please read this article > > and submit a PR. $ ls -la /var/crash total 4 drwxr-x--- 2 root wheel 3 Jul 11 2014 . drwxr-xr-x 24 root wheel 24 Sep 2 12:23 .. -rw-r--r-- 1 root wheel 5 Jan 16 2014 minfree $ cat /var/crash/minfree 2048 Does this mean that it wasn't a kernel panic at all? Or isn't there something worth noticing because I don't have dumpdev configured? I'm afraid that I can't remember another change that I made to the jail that caused it to crash. But, up to now, the only thing I can remember I did was upgrading net/syncthing. > I know that it can be a difficult path to take, but please do that. > Having a kernel panic in a -RELEASE version is rare and your particular > circumstances are very valuable, cause you can reliably reproduce the bug. > > Don't be a free rider, make FreeBSD better ;) I definitely want to further investigate the problem and keep everyone updated about it. It's just that I need some help to do that, so your reply is very much appreciated. I'm definitely not a free rider. ;-) So far, I haven't started the jail again since it has continuously broken my system. (I'm scared.) I will configure dumpdev first and after that I'll start the jail. I'll keep you updated.