From owner-freebsd-questions@FreeBSD.ORG Fri Jul 1 09:31:35 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F2A5F106566C for ; Fri, 1 Jul 2011 09:31:35 +0000 (UTC) (envelope-from mlmichael70@gmail.com) Received: from mail-ww0-f50.google.com (mail-ww0-f50.google.com [74.125.82.50]) by mx1.freebsd.org (Postfix) with ESMTP id 8BEBC8FC16 for ; Fri, 1 Jul 2011 09:31:35 +0000 (UTC) Received: by wwe6 with SMTP id 6so2979159wwe.31 for ; Fri, 01 Jul 2011 02:31:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=q6wMCh378hrI8YuxNGCTB4S0Tkol5o9mcetCcZJKSEc=; b=iGpUZC55yEJPmbwMQlgTKqJP6fjWQN8rdhRBFVcPSHucoYeUhikBuRySn29Vh4LOO+ CbJ1QXqHJXZZobIa5xAgIPPnC/53gWvlIpc+uA7VDOQ63uvCoQvKy2XeKbKYyYJuzWYc 46i/IX1cZh2cB3yll75aCbMT6WyI15v7rN15Q= Received: by 10.227.54.200 with SMTP id r8mr2700179wbg.112.1309510860462; Fri, 01 Jul 2011 02:01:00 -0700 (PDT) Received: from prime.nonspace (adsl-77-86-90-220.karoo.kcom.com [77.86.90.220]) by mx.google.com with ESMTPS id ei4sm2197260wbb.26.2011.07.01.02.00.59 (version=SSLv3 cipher=OTHER); Fri, 01 Jul 2011 02:01:00 -0700 (PDT) Message-ID: <4E0D8CCB.1000004@gmail.com> Date: Fri, 01 Jul 2011 10:00:59 +0100 From: Michael User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.18) Gecko/20110622 Thunderbird/3.1.11 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: why desktop apps are able to kill my freebsd box? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Jul 2011 09:31:36 -0000 Why a faulty desktop application run as unprivileged user is able to crash my system? I mean, I know programs have bugs and sometimes they lead to crashes. I'm fine with that. But why a crashing program (for example firefox or banshee) is able to kill the whole system? And by 'crash' or 'kill' i mean that for whatever reason the system is frozen and doesn't reply to anything but a hard reset. It just doesn't make much sense so I'm assuming that I must be doing something wrong. Where and what kind of restrictions should I set up to make sure that a buggy unprivileged program cannot freeze my box? Thank you in advance. Michael.