Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754870AbYHKS1o (ORCPT ); Mon, 11 Aug 2008 14:27:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752783AbYHKS1g (ORCPT ); Mon, 11 Aug 2008 14:27:36 -0400 Received: from agminet01.oracle.com ([141.146.126.228]:55799 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752430AbYHKS1f (ORCPT ); Mon, 11 Aug 2008 14:27:35 -0400 Date: Mon, 11 Aug 2008 11:27:12 -0700 From: Randy Dunlap To: lkml Subject: INFO: task blocked for more than 120 seconds Message-Id: <20080811112712.f858d77c.randy.dunlap@oracle.com> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.5.0 (GTK+ 2.12.0; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2901 Lines: 66 On 2.6.27-rc2-git4 and several previous kernels, I see several of these messages. E.g.: INFO: task kjournald:665 blocked for more than 120 seconds. INFO: task stress:17797 blocked for more than 120 seconds. INFO: task stress:17805 blocked for more than 120 seconds. Has anyone tracked this down? Should I attempt to bisect it? (on x86_64, SMP, 8 GB RAM) INFO: task kjournald:665 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kjournald D ffff88027e04be30 4592 665 2 ffff88027e04bdd0 0000000000000046 ffff88027e04bd90 ffffffff8022b5f8 ffff88027e703090 ffff880178c91bc0 ffff88027e7033d0 0000000178c91c08 ffff88027e04bdb0 ffff88027e04be30 ffff88017eaf80f0 0000000000000246 Call Trace: [] ? __wake_up_common+0x41/0x74 [] journal_commit_transaction+0xe9/0xd7e [] ? lock_timer_base+0x26/0x4a [] ? autoremove_wake_function+0x0/0x38 [] ? try_to_del_timer_sync+0x56/0x62 [] kjournald+0xc3/0x1fb [] ? autoremove_wake_function+0x0/0x38 [] ? kjournald+0x0/0x1fb [] kthread+0x49/0x76 [] child_rip+0xa/0x11 [] ? kthread+0x0/0x76 [] ? child_rip+0x0/0x11 INFO: task stress:17797 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. stress D ffff88017eaf8024 5088 17797 17795 ffff8801f4055cd8 0000000000000082 0000000000000086 ffff88027e04bec0 ffff880178c93090 ffff88017faf75f0 ffff880178c933d0 0000000300000001 0000000000000292 ffff8801f4055ce8 ffff88017eaf80a8 0000000000000246 Call Trace: [] log_wait_commit+0xa4/0xf4 [] ? autoremove_wake_function+0x0/0x38 [] journal_stop+0x17c/0x1a9 [] journal_force_commit+0x23/0x25 [] ext3_force_commit+0x26/0x28 [] ext3_write_inode+0x39/0x3f [] __writeback_single_inode+0x180/0x284 [] ? wake_bit_function+0x0/0x2a [] generic_sync_sb_inodes+0x1c3/0x29e [] sync_sb_inodes+0x9/0xb [] sync_inodes_sb+0x95/0x9c [] __sync_inodes+0x62/0xaf [] sync_inodes+0x2e/0x33 [] do_sync+0x34/0x59 [] sys_sync+0xe/0x13 [] system_call_fastpath+0x16/0x1b --- ~Randy Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA http://linuxplumbersconf.org/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/