From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 12 May 2002 16:35:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 12 May 2002 16:35:53 -0400 Received: from dbl.q-ag.de ([80.146.160.66]:19606 "EHLO dbl.q-ag.de") by vger.kernel.org with ESMTP id ; Sun, 12 May 2002 16:35:51 -0400 Message-ID: <3CDED21B.3050208@colorfullife.com> Date: Sun, 12 May 2002 22:35:39 +0200 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020408 X-Accept-Language: en-us, en MIME-Version: 1.0 To: =?iso-8859-2?Q?Witek_Kr=EAcicki?= CC: linux-kernel@vger.kernel.org Subject: Re: [BUG 2.5.X] Hollow processes Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > It's impossible to check what the process is (trying to read > /proc/{pid}/{anyting} causes reading process to hang in the > same way (so we have now 2 hanging processes). Have you tried SysRQ+showTasks? That dumps the kernel stack. You can convert the numbers to names with ksymoops, or often klogd will convert them and the result is in /var/log/messages. What exactly hangs? Could you run strace ls /proc/1234 strace cat /proc/1234/maps strace ls /proc/1234/fd -l Which syscall hangs? SMP or UP? -- Manfred