Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936616AbZDIVhX (ORCPT ); Thu, 9 Apr 2009 17:37:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756436AbZDIVhG (ORCPT ); Thu, 9 Apr 2009 17:37:06 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:34929 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755571AbZDIVhE (ORCPT ); Thu, 9 Apr 2009 17:37:04 -0400 Date: Thu, 9 Apr 2009 14:39:10 -0700 From: Sukadev Bhattiprolu To: Kumar Gala Cc: oleg@redhat.com, linux-kernel Mailing List , Andrew Morton Subject: Re: LTP 20080131 causes defunct processes w/2.6.30-rc1 (possible ptrace issue?) Message-ID: <20090409213910.GB30645@us.ibm.com> References: <0CA2FBE3-C50C-4503-9134-6DA1C6965743@kernel.crashing.org> <0D4C1952-792C-4AFF-8969-1EF5386FDAB9@kernel.crashing.org> <20090409194912.GA30645@us.ibm.com> <0D6A6388-C12F-4066-84B8-155381D14504@kernel.crashing.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0D6A6388-C12F-4066-84B8-155381D14504@kernel.crashing.org> X-Operating-System: Linux 2.0.32 on an i486 User-Agent: Mutt/1.5.15+20070412 (2007-04-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1210 Lines: 40 Kumar Gala [galak@kernel.crashing.org] wrote: > > On Apr 9, 2009, at 2:49 PM, Sukadev Bhattiprolu wrote: > >> Kumar Gala [galak@kernel.crashing.org] wrote: >>> >>> On Apr 9, 2009, at 10:43 AM, Kumar Gala wrote: >>> >>>> I'm seeing some weird behavior in 2.6.30-rc1 that didn't exist in >>>> 2.6.29. >>>> We have a slightly older LTP version (20080131) that we run on some >>>> embedded PPC boards. If I run the syscall tests on 2.6.29 things pass >>>> as >> >> Will try to repro on a normal machine, but can you attach the >> /proc/pid/status >> (and possibly the stack) of the parent of the 'recv01' ? > > Name: recv01 > State: Z (zombie) > Tgid: 2449 > Pid: 2449 > PPid: 1 Ok, but I meant the status of the parent (i.e /proc/1/status in this case). To get the stack, if CONFIG_MAGIC_SYSRQ=y, you can: $ echo 1 > /proc/sys/kernel/sysrq $ echo t > /proc/sysrq-trigger $ dmesg > /tmp/dmesg.out Look in /tmp/dmesg.out for the process stack Suka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/