From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753448AbXIMLn4 (ORCPT ); Thu, 13 Sep 2007 07:43:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751850AbXIMLnt (ORCPT ); Thu, 13 Sep 2007 07:43:49 -0400 Received: from ug-out-1314.google.com ([66.249.92.174]:54044 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751538AbXIMLns (ORCPT ); Thu, 13 Sep 2007 07:43:48 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:x-enigmail-version:content-type:content-transfer-encoding; b=Rx/OpINLf04+5wNkq5gSwQW+fVjF6Ns9opOU8sDEVaWZbQBW6He/WTHZBmz7yhICuMkFw2/PdMeniRcsNBtr7FCpgbC0rL0R/vcnK8crHc9s2gToz6QpPIDHmpdWjOi18gx1d7YaUCsnKrngVPkMxqH8vWzPknPWwnjYiJ09pf4= Message-ID: <46E9226F.9010700@gmail.com> Date: Thu, 13 Sep 2007 13:43:43 +0200 From: Jiri Slaby User-Agent: Thunderbird 2.0.0.0 (X11/20070326) MIME-Version: 1.0 To: Andrew Morton CC: linux-mm@kvack.org, Linux kernel mailing list Subject: 2.6.23-rc4-mm1: deadlock while mmaping video device X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I have this circular lock dependency on 2.6.23-rc4-mm1 when opening /dev/video0 and mmaping it. the v4l driver is stk11xx: http://www.fi.muni.cz/~xslaby/sklad/panics/mm-deadlock.png Using slub on x86_64 if that matters. For now, I'm unable to set up a netconsole, so only the picture linked above is the best I have. regards, -- http://www.fi.muni.cz/~xslaby/ Jiri Slaby faculty of informatics, masaryk university, brno, cz