From owner-freebsd-hackers@FreeBSD.ORG Wed Oct 29 02:47:26 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 91AB416A4D8; Wed, 29 Oct 2003 02:47:26 -0800 (PST) Received: from frost.ath.cx (BSN-95-242-77.dsl.siol.net [193.95.242.77]) by mx1.FreeBSD.org (Postfix) with ESMTP id 404A743FCB; Wed, 29 Oct 2003 02:47:25 -0800 (PST) (envelope-from bfg@noviforum.si) Received: from noviforum.si (mordor.lucky.si [192.168.200.250]) by frost.ath.cx (ESMTP) with ESMTP id 728A178; Wed, 29 Oct 2003 11:47:25 +0100 (CET) Message-ID: <3F9F9884.3020309@noviforum.si> Date: Wed, 29 Oct 2003 11:37:56 +0100 From: =?ISO-8859-2?Q?=22Branko_F=2E_Gra=E8nar=22?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031013 Thunderbird/0.3 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-current@freebsd.org X-Enigmail-Version: 0.81.7.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-hackers@freebsd.org Subject: FreeBSD 5.1-p10 reproducible crash with Apache2 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Oct 2003 10:47:26 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi. FreeBSD 5.1-p10 (and also possible other 5.1-pX version) can be remotely locked up if the following criteria is met: + apache2 has mod_ssl loaded and enabled + apache2 has the following configuration directives set to the following values: SSLMutex sem SSLSessionCache shm:/some/file(1048576) + client connects via SSL/TLS to apache fast enough. If all conditions above are satisfied except the last one, then lockup doesn't happen. I tested on three 5.1-p10 machines (SMP, uniprocessor, uniprocessor with hypterthreading) with JMeter 1.9.1. It is possible lockup machine with 100 requests (1 concurrent request) in 1-3 seconds. If SSLMutex is set to file:/path/somewhere and SSLSessionCache is set to dbm:/some/dbm lockup does not accour. Linux 2.4.22 is not affected by this issue. Details: apache: 2.0.47 php: 4.3.3 + turck mmcache 2.4.2 web application: horde imp webmail Best regards, Brane -----BEGIN PGP SIGNATURE----- iD8DBQE/n5iEfiC/E+t8hPcRAu9kAJ4lpD5CJf7HwYxphipHin0gUFaORACfV6ei Wxi5PvScjACrKmCxCEbt0l0= =UVfz -----END PGP SIGNATURE-----