From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932316AbWF0OMp (ORCPT ); Tue, 27 Jun 2006 10:12:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932364AbWF0OMo (ORCPT ); Tue, 27 Jun 2006 10:12:44 -0400 Received: from py-out-1112.google.com ([64.233.166.182]:63802 "EHLO py-out-1112.google.com") by vger.kernel.org with ESMTP id S932316AbWF0OMn (ORCPT ); Tue, 27 Jun 2006 10:12:43 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KbV0/IvkGheXtOoIMwFug6yaXu4lvdQlkZNjwNNJqCLZitgcNzx9/b9721Gau4wCOgUOllDNmbHiYcX8CwW/u+aIfOLuik9HnUNbL4Hp63IA10+n4Uz17jt4FOt0koUxtrLluk/kbvsPPJgDHzSEUeG9EJTrKU41dDms4DI1J+U= Message-ID: <6bffcb0e0606270712w166f04a6u237d695e2bfa1913@mail.gmail.com> Date: Tue, 27 Jun 2006 16:12:42 +0200 From: "Michal Piotrowski" To: "Andrew Morton" Subject: Re: 2.6.17-mm3 Cc: "Stephen Hemminger" , "Ingo Molnar" , "Arjan van de Ven" , linux-kernel@vger.kernel.org, netdev@vger.kernel.org In-Reply-To: <20060627015211.ce480da6.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20060627015211.ce480da6.akpm@osdl.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 27/06/06, Andrew Morton wrote: > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17/2.6.17-mm3/ > > It looks like a skge bug ========================================================= [ INFO: possible irq lock inversion dependency detected ] --------------------------------------------------------- swapper/0 just changed the state of lock: (tasklist_lock){..-?}, at: [] send_group_sig_info+0x16/0x34 but this lock took another, soft-irq-unsafe lock in the past: (&sig->stats_lock){--..} and interrupts could create inverse lock ordering between them. other info that might help us debug this: no locks held by swapper/0. the first lock's dependencies: -> (tasklist_lock){..-?} ops: 13763 { initial-use at: [] lock_acquire+0x60/0x80 [] _write_lock_irq+0x29/0x38 [] copy_process+0xea7/0x13c0 [] do_fork+0x8d/0x18f [] kernel_thread+0x6c/0x74 [] rest_init+0x14/0x3c [] start_kernel+0x388/0x390 [] 0xc0100210 in-softirq-R at: [..] Here is a dmesg log http://www.stardust.webpages.pl/files/mm/2.6.17-mm3/mm-dmesg Here is a config file http://www.stardust.webpages.pl/files/mm/2.6.17-mm3/mm-config Regards, Michal -- Michal K. K. Piotrowski LTG - Linux Testers Group (http://www.stardust.webpages.pl/ltg/wiki/)