From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759758AbYEMTqb (ORCPT ); Tue, 13 May 2008 15:46:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755674AbYEMTqY (ORCPT ); Tue, 13 May 2008 15:46:24 -0400 Received: from 1wt.eu ([62.212.114.60]:4305 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754321AbYEMTqX (ORCPT ); Tue, 13 May 2008 15:46:23 -0400 Date: Tue, 13 May 2008 21:46:14 +0200 From: Willy Tarreau To: Harald Dunkel Cc: Vegard Nossum , linux-kernel@vger.kernel.org Subject: Re: 2.6.25.3: su gets stuck for root Message-ID: <20080513194612.GV8474@1wt.eu> References: <4829326A.6060808@t-online.de> <19f34abd0805122347x4d9c5d03m16679d724189790e@mail.gmail.com> <4829D345.7020909@t-online.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4829D345.7020909@t-online.de> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 13, 2008 at 07:43:33PM +0200, Harald Dunkel wrote: > Vegard Nossum wrote: > > > >Can you try to run "strace su someuser" instead? > > > > I tried, but its a Heisenbug: If I run it with strace (with or without > -f), then it doesn't get stuck. even as root ? Because if you run strace on "su" as a user, you will lose the setuid which may change the conditions. Willy