From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753471AbYA3A3P (ORCPT ); Tue, 29 Jan 2008 19:29:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751306AbYA3A2y (ORCPT ); Tue, 29 Jan 2008 19:28:54 -0500 Received: from sj-iport-6.cisco.com ([171.71.176.117]:39952 "EHLO sj-iport-6.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750886AbYA3A2w (ORCPT ); Tue, 29 Jan 2008 19:28:52 -0500 To: linux-kernel@vger.kernel.org Subject: task blocked in sync_buffer from ext3_free_branches X-Message-Flag: Warning: May contain useful information From: Roland Dreier Date: Tue, 29 Jan 2008 16:28:35 -0800 Message-ID: User-Agent: Gnus/5.1008 (Gnus v5.10.8) XEmacs/21.4.21 (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 30 Jan 2008 00:28:36.0296 (UTC) FILETIME=[0D6F7C80:01C862D7] Authentication-Results: sj-dkim-2; header.From=rdreier@cisco.com; dkim=pass ( sig from cisco.com/sjdkim2002 verified; ); Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'm getting the following while building a kernel (with make -j24 on an 8 CPU system: 4 socket dual-core opteron) with current Linus git (5b10ca19 is my head). Once this happens the build is hung, although I can ssh in and get a new shell OK. Any ideas or suggestions on what would be useful debugging information? [ 201.820629] INFO: task mv:7225 blocked for more than 120 seco. [ 201.824624] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 201.828622] mv D 0000000000000000 0 7225 7055 [ 201.840623] ffff8101c11bdb48 0000000000000086 0000000000000000 ffff810074432360 [ 201.857186] ffff810242822c00 ffff8101c11bdaf8 ffff810074432360 ffffffff80597200 [ 201.876624] ffffffff80597200 ffffffff80593c80 ffffffff80597200 ffff8101c1059120 [ 201.892626] Call Trace: [ 201.896647] [] sync_buffer+0x0/0x40 [ 201.900628] [] io_schedule+0x28/0x33 [ 201.904628] [] sync_buffer+0x3b/0x40 [ 201.908628] [] __wait_on_bit+0x40/0x6e [ 201.912629] [] sync_buffer+0x0/0x40 [ 201.916628] [] out_of_line_wait_on_bit+0x6c/0x78 [ 201.920631] [] wake_bit_function+0x0/0x23 [ 201.924630] [] __bread+0x61/0x76 [ 201.928632] [] ext3_free_branches+0x90/0x1b8 [ 201.932631] [] ext3_truncate+0x71d/0x871 [ 201.936632] [] start_this_handle+0x294/0x304 [ 201.940631] [] journal_stop+0x192/0x19e [ 201.944632] [] journal_start+0x9b/0xd2 [ 201.948632] [] ext3_delete_inode+0x7a/0xcf [ 201.952631] [] ext3_delete_inode+0x0/0xcf [ 201.956632] [] generic_delete_inode+0xa7/0x11d [ 201.960631] [] d_kill+0x34/0x55 [ 201.964632] [] dput+0x101/0x10b [ 201.968633] [] sys_renameat+0x18d/0x1fc [ 201.972634] [] do_page_fault+0x3d8/0x724 [ 201.976635] [] sys_newlstat+0x28/0x31 [ 201.980636] [] system_call+0x7e/0x83