From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 25 Jun 2001 12:49:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 25 Jun 2001 12:49:05 -0400 Received: from [32.97.182.101] ([32.97.182.101]:25227 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id ; Mon, 25 Jun 2001 12:48:55 -0400 Importance: Normal Subject: Re: all processes waiting in TASK_UNINTERRUPTIBLE state To: Jeff Dike Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, James Stevenson X-Mailer: Lotus Notes Release 5.0.3 (Intl) 21 March 2000 Message-ID: From: "Bulent Abali" Date: Mon, 25 Jun 2001 12:48:46 -0400 X-MIMETrack: Serialize by Router on D01ML233/01/M/IBM(Build V508_06042001 |June 4, 2001) at 06/25/2001 12:47:44 PM MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >abali@us.ibm.com said: >> I am running in to a problem, seemingly a deadlock situation, where >> almost all the processes end up in the TASK_UNINTERRUPTIBLE state. >> All the process eventually stop responding, including login shell, no >> screen updates, keyboard etc. Can ping and sysrq key works. I >> traced the tasks through sysrq-t key. The processors are in the idle >> state. Tasks all seem to get stuck in the __wait_on_page or >> __lock_page. > >I've seen this under UML, Rik van Riel has seen it on a physical box, and we >suspect that they're the same problem (i.e. mine isn't a UML-specific bug). Can you give more details? Was there an aic7xxx scsi driver on the box? run_task_queue(&tq_disk) should eventually unlock those pages but they remain locked. I am trying to narrow it down to fs/buffer code or the SCSI driver aic7xxx in my case. Thanks. /bulent