From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752742Ab0KDP6f (ORCPT ); Thu, 4 Nov 2010 11:58:35 -0400 Received: from mail-ey0-f174.google.com ([209.85.215.174]:49489 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751413Ab0KDP6c (ORCPT ); Thu, 4 Nov 2010 11:58:32 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:mime-version:content-type :content-disposition:user-agent; b=NuvJ3Q54GWS8l+m7g45Zuzo0zVm0AYnPv31LH/weenR0bGZwM1btbXuXDN2s1QGCfO jFFbWL9DAPVbDBWxhW3ZmfcjnnyCU61OENmWLMSg5+JsZvAHnpZnzqYW79dFhNW1N2XL fMFobUKCyXdAqjDbNaFFBC1h/cLYsD5unvR84= Date: Thu, 4 Nov 2010 17:58:26 +0200 From: Sergey Senozhatsky To: Oleg Nesterov Cc: KOSAKI Motohiro , Roland McGrath , David Howells , linux-kernel@vger.kernel.org Subject: task blocked for more than 120 seconds Message-ID: <20101104155826.GC13818@swordfish.minsk.epam.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="0lnxQi9hkpPO77W3" Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --0lnxQi9hkpPO77W3 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hello, Got the following traces: [42001.449295] INFO: task openbox:17761 blocked for more than 120 seconds. [42001.449303] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [42001.449311] openbox D 0000000000000003 0 17761 3723 0x00000000 [42001.449321] ffff88004ce8dc38 0000000000000046 0000000000000000 ffff88004ce8c000 [42001.449333] ffff88004ce8dfd8 0000000000012040 ffff880133010000 ffff88004ce8dfd8 [42001.449343] 0000000000012040 0000000000012040 ffff88004ce8dfd8 0000000000012040 [42001.449354] Call Trace: [42001.449369] [] schedule_timeout+0x38/0x220 [42001.449381] [] ? mark_held_locks+0x50/0x72 [42001.449389] [] ? _raw_spin_unlock_irq+0x2b/0x59 [42001.449398] [] ? get_parent_ip+0x11/0x41 [42001.449406] [] ? sub_preempt_count+0x92/0xa5 [42001.449413] [] wait_for_common+0xca/0x144 [42001.449421] [] ? default_wake_function+0x0/0xf [42001.449429] [] ? _raw_spin_unlock_irqrestore+0x6f/0x74 [42001.449436] [] wait_for_completion+0x18/0x1a [42001.449445] [] stop_one_cpu+0x8c/0xba [42001.449453] [] ? migration_cpu_stop+0x0/0x3d [42001.449461] [] sched_exec+0xc3/0xdc [42001.449470] [] do_execve+0xaa/0x267 [42001.449479] [] sys_execve+0x3e/0x55 [42001.449488] [] stub_execve+0x6c/0xc0 [42001.449494] 1 lock held by openbox/17761: [42001.449498] #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x28/0x64 [47761.448699] INFO: task make:29123 blocked for more than 120 seconds. [47761.448704] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [47761.448710] make D 0000000000000001 0 29123 24208 0x00000004 [47761.448719] ffff880115dadcf0 0000000000000046 ffff880100000000 ffff880115dac000 [47761.448731] ffff880115dadfd8 0000000000012040 ffff880133290000 ffff880115dadfd8 [47761.448741] 0000000000012040 0000000000012040 ffff880115dadfd8 0000000000012040 [47761.448752] Call Trace: [47761.448766] [] schedule_timeout+0x38/0x220 [47761.448774] [] ? wait_for_common+0x26/0x144 [47761.448784] [] ? do_raw_spin_lock+0x6b/0x122 [47761.448792] [] ? _raw_spin_unlock_irq+0x2b/0x59 [47761.448801] [] ? get_parent_ip+0x11/0x41 [47761.448808] [] ? sub_preempt_count+0x92/0xa5 [47761.448816] [] wait_for_common+0xca/0x144 [47761.448823] [] ? default_wake_function+0x0/0xf [47761.448831] [] ? sub_preempt_count+0x92/0xa5 [47761.448838] [] wait_for_completion+0x18/0x1a [47761.448845] [] do_fork+0x2b0/0x32e [47761.448856] [] ? sysret_check+0x2e/0x69 [47761.448864] [] sys_vfork+0x20/0x22 [47761.448871] [] stub_vfork+0x13/0x20 [47761.448878] [] ? system_call_fastpath+0x16/0x1b [47761.448884] no locks held by make/29123. [47761.448891] INFO: task make:31380 blocked for more than 120 seconds. [47761.448895] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [47761.448899] make D 0000000000000000 0 31380 29123 0x00000000 [47761.448908] ffff880157f01c38 0000000000000046 0000000000000000 ffff880157f00000 [47761.448918] ffff880157f01fd8 0000000000012040 ffff8800773abea0 ffff880157f01fd8 [47761.448929] 0000000000012040 0000000000012040 ffff880157f01fd8 0000000000012040 [47761.448939] Call Trace: [47761.448947] [] schedule_timeout+0x38/0x220 [47761.448957] [] ? mark_held_locks+0x50/0x72 [47761.448965] [] ? _raw_spin_unlock_irq+0x2b/0x59 [47761.448972] [] ? get_parent_ip+0x11/0x41 [47761.448979] [] ? sub_preempt_count+0x92/0xa5 [47761.448986] [] wait_for_common+0xca/0x144 [47761.448994] [] ? default_wake_function+0x0/0xf [47761.449001] [] ? _raw_spin_unlock_irqrestore+0x6f/0x74 [47761.449008] [] wait_for_completion+0x18/0x1a [47761.449017] [] stop_one_cpu+0x8c/0xba [47761.449025] [] ? migration_cpu_stop+0x0/0x3d [47761.449033] [] sched_exec+0xc3/0xdc [47761.449041] [] do_execve+0xaa/0x267 [47761.449049] [] sys_execve+0x3e/0x55 [47761.449056] [] stub_execve+0x6c/0xc0 [47761.449062] 1 lock held by make/31380: [47761.449065] #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x28/0x64 Sergey --0lnxQi9hkpPO77W3 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iJwEAQECAAYFAkzS2CIACgkQfKHnntdSXjRMOgP+Pg+//4+l3W8CjeklYrUsUOve G1Hi4bYi4ouxQrPwoXyHMoPUykMQeQbryJgBQl/cPZn7fkxb7LNFsJ8mpj4uYqYn xr0V+XDSvz34cBRpS4lhGpsXg31hrXu4qJ2aCHyKjZB7S87g2KyHFp8j95EnoPfe wkJj3JzwPKno9Qla9NM= =MEld -----END PGP SIGNATURE----- --0lnxQi9hkpPO77W3--