From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.palepurple.co.uk ([89.16.183.188]:35253 "EHLO mail.palepurple.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754931AbbLGLPU (ORCPT ); Mon, 7 Dec 2015 06:15:20 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.palepurple.co.uk (Postfix) with ESMTP id 9CEC2812B for ; Mon, 7 Dec 2015 11:09:13 +0000 (GMT) Received: from mail.palepurple.co.uk ([127.0.0.1]) by localhost (mail.palepurple.co.uk [127.0.0.50]) (amavisd-new, port 10024) with ESMTP id I1B92PqrQo-w for ; Mon, 7 Dec 2015 11:09:13 +0000 (GMT) Received: from [172.30.33.200] (host81-133-46-190.in-addr.btopenworld.com [81.133.46.190]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: david@palepurple.co.uk) by mail.palepurple.co.uk (Postfix) with ESMTPSA id 5CA7680D3 for ; Mon, 7 Dec 2015 11:09:13 +0000 (GMT) To: "linux-btrfs@vger.kernel.org" From: David Goodwin Subject: kernel 4.1.12 - hung_task_timeout Message-ID: <566568D9.7070501@codepoets.co.uk> Date: Mon, 7 Dec 2015 11:09:13 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, See below for oops messages from a 4.1.12 kernel. The system would probably have been running a balance or scrub at the time. Processes trying to use subvolumes blocked and it eventually needed rebooting via sysrq to fix. Kernel is a vanilla one from kernel.org. thanks, David. INFO: task cron:12252 blocked for more than 120 seconds. Not tainted 4.1.12-dg1 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. cron D ffff8803e0256840 0 12252 2356 0x00000000 ffff88021366caa0 ffff8803cb01c170 ffff8803cea84a20 0000000000000246 ffff880004e70000 ffff8800e72829f0 0000000000140000 ffff8800e72829f0 0000000000000001 ffff880028eb3438 ffffffff8157494f ffff88003bf0c2e0 Call Trace: [] ? schedule+0x2f/0x80 [] ? wait_current_trans.isra.19+0x9f/0x100 [btrfs] [] ? wait_woken+0x90/0x90 [] ? start_transaction+0x438/0x5b0 [btrfs] [] ? btrfs_create+0x39/0x1e0 [btrfs] [] ? __d_instantiate+0x98/0x120 [] ? d_rehash+0x4b/0x60 [] ? vfs_create+0xc4/0x130 [] ? do_last+0x1154/0x1210 [] ? __init_waitqueue_head+0x1/0x20 [] ? path_openat+0x83/0x600 [] ? __wake_up_bit+0x42/0x50 [] ? page_add_file_rmap+0x13/0x60 [] ? do_filp_open+0x30/0xa0 [] ? __alloc_fd+0x9f/0x130 [] ? do_sys_open+0x12a/0x220 [] ? system_call_fastpath+0x16/0x75 INFO: task cron:12566 blocked for more than 120 seconds. Not tainted 4.1.12-dg1 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. cron D ffff8803e0216840 0 12566 25790 0x00000000 ffff8803b08ac3d0 ffff8801b234d5c8 ffffffff81814540 ffff8803b08ac3d0 ffff88004ecc4000 ffff880266c26634 ffff8803b08ac3d0 00000000ffffffff ffff880266c26638 0000000000000000 ffffffff8157494f ffff880266c26630 Call Trace: [] ? schedule+0x2f/0x80 [] ? schedule_preempt_disabled+0xe/0x20 [] ? __mutex_lock_slowpath+0x95/0x110 [] ? mutex_lock+0x1b/0x30 [] ? do_last+0x381/0x1210 [] ? __init_waitqueue_head+0x1/0x20 [] ? path_openat+0x83/0x600 [] ? do_filp_open+0x30/0xa0 [] ? __alloc_fd+0x9f/0x130 [] ? do_sys_open+0x12a/0x220 [] ? system_call_fastpath+0x16/0x75 INFO: task cron:12568 blocked for more than 120 seconds. Not tainted 4.1.12-dg1 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. cron D ffff8803e0256840 0 12568 2356 0x00000000 ffff880004b71430 ffff8801247ba588 ffff8803cea84a20 ffff88004ecf0000 ffff88004ecf0000 ffff8803baccd2a4 ffff880004b71430 00000000ffffffff ffff8803baccd2a8 0000000000000000 ffffffff8157494f ffff8803baccd2a0 Call Trace: [] ? schedule+0x2f/0x80 [] ? schedule_preempt_disabled+0xe/0x20 [] ? __mutex_lock_slowpath+0x95/0x110 [] ? mutex_lock+0x1b/0x30 [] ? do_last+0x381/0x1210 [] ? __init_waitqueue_head+0x1/0x20 [] ? path_openat+0x83/0x600 [] ? __wake_up_bit+0x42/0x50 [] ? filemap_map_pages+0xc8/0x250 [] ? do_filp_open+0x30/0xa0 [] ? __alloc_fd+0x9f/0x130 [] ? do_sys_open+0x12a/0x220 [] ? system_call_fastpath+0x16/0x75