From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: all processes waiting in TASK_UNINTERRUPTIBLE state Message-ID: From: "Bulent Abali" Date: Mon, 25 Jun 2001 12:48:46 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Jeff Dike Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, James Stevenson List-ID: >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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/