From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <494F6250.50707@domain.hid> Date: Mon, 22 Dec 2008 09:48:00 +0000 From: Gilles Chanteperdrix MIME-Version: 1.0 References: <20081127175234.163sujmgcgcgs4gk@domain.hid> <492EF786.4040303@domain.hid> <20081128181906.mnv2mvjgo44wgoc0@domain.hid> <49301B0B.9010208@domain.hid> <20081128182944.qp8yhwpk6cw8cwss@domain.hid> <49302630.4080104@domain.hid> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Zombie user tasks List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alphan Ulusoy Cc: xenomai@xenomai.org Alphan Ulusoy wrote: > I've recompiled the kernel after turning off the preemptible RCU > option. I left CONFIG_PREEMPT as it is for the time being. Can > preemptible RCU option be the cause ? I do not think so. However, I have no idea what the problem could be. Are you sure that you ran wait on the given pid? In order to be sure, you can try and send SIGCHLD to the process father? What would be really interesting too, is to have the process status. So, in function sched_show_task, file kernel/sched.c, could you try and print p->state in hexadecimal? In the dump you sent, the state is shown as a question mark, so we do not really know in what state the task is. You should also recompile your kernel with frame pointers, if it is not already the case. -- Gilles.