From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay5-d.mail.gandi.net ([217.70.183.197]:49984 "EHLO relay5-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751654AbaGSHTZ convert rfc822-to-8bit (ORCPT ); Sat, 19 Jul 2014 03:19:25 -0400 Received: from mfilter6-d.gandi.net (mfilter6-d.gandi.net [217.70.178.135]) by relay5-d.mail.gandi.net (Postfix) with ESMTP id 8281C41C06B for ; Sat, 19 Jul 2014 09:19:22 +0200 (CEST) Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by mfilter6-d.gandi.net (mfilter6-d.gandi.net [10.0.15.180]) (amavisd-new, port 10024) with ESMTP id BlapyxDRyjpZ for ; Sat, 19 Jul 2014 09:19:21 +0200 (CEST) Received: from zafu.localnet (AMontpellier-256-1-92-201.w90-28.abo.wanadoo.fr [90.28.147.201]) (Authenticated sender: michel@bouissou.net) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 0270041C067 for ; Sat, 19 Jul 2014 09:19:20 +0200 (CEST) From: =?ISO-8859-1?Q?Sw=E2mi?= Petaramesh To: linux-btrfs Subject: BTRFS kernel errors in 3.15.5 Date: Sat, 19 Jul 2014 09:19:13 +0200 Message-ID: <1874170.zy97UOFIcr@zafu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, This happens systematically these days, while trying to backup using rsync two of my laptops on an external HD - BTRFS formatted. First at mount : juil. 19 09:08:32 zafu kernel: BTRFS info (device dm-3): disk space caching is enabled juil. 19 09:08:38 zafu kernel: pool[7215]: segfault at 58252fd0 ip 00007fd06e466ac7 sp 00007fd062ffbf90 error 4 in libc-2.19.so[7fd06e41e000+1a4000] Happening on 2 different machines (both Arch Linux with latest kernel), I suspected the external HD, but it spent the night passing all long SMART tests plus a "btrfs scrub", all with flying colors... After the following error, all accesses to the external HD lock until a forced power off of the whole system... juil. 19 09:12:57 zafu kernel: INFO: task kworker/u4:7:6677 blocked for more than 120 seconds. juil. 19 09:12:57 zafu kernel: Tainted: G O 3.15.5-2-ARCH #1 juil. 19 09:12:57 zafu kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. juil. 19 09:12:57 zafu kernel: kworker/u4:7 D 0000000000000000 0 6677 2 0x00000000 juil. 19 09:12:57 zafu kernel: Workqueue: btrfs-flush_delalloc normal_work_helper [btrfs] juil. 19 09:12:57 zafu kernel: ffff88001e9dfb48 0000000000000046 ffff8800879f1460 0000000000014700 juil. 19 09:12:57 zafu kernel: ffff88001e9dffd8 0000000000014700 ffff8800879f1460 ffffffffa0262692 juil. 19 09:12:57 zafu kernel: 0000000000000000 ffffffff00000050 ffff88001e9dfbc4 ffff88001e9dfac8 juil. 19 09:12:57 zafu kernel: Call Trace: juil. 19 09:12:57 zafu kernel: [] ? run_delalloc_range+0x192/0x350 [btrfs] juil. 19 09:12:57 zafu kernel: [] ? filemap_fdatawait+0x30/0x30 juil. 19 09:12:57 zafu kernel: [] schedule+0x29/0x70 juil. 19 09:12:57 zafu kernel: [] io_schedule+0x94/0xf0 juil. 19 09:12:57 zafu kernel: [] sleep_on_page+0xe/0x20 juil. 19 09:12:57 zafu kernel: [] __wait_on_bit_lock+0x48/0xb0 juil. 19 09:12:57 zafu kernel: [] __lock_page+0x78/0x90 juil. 19 09:12:57 zafu kernel: [] ? autoremove_wake_function+0x40/0x40 juil. 19 09:12:57 zafu kernel: [] extent_write_cache_pages.isra.28.constprop.45+0x258/0x3a0 [btrfs] juil. 19 09:12:57 zafu kernel: [] ? update_curr+0xec/0x1b0 juil. 19 09:12:57 zafu kernel: [] ? __enqueue_entity+0x78/0x80 juil. 19 09:12:57 zafu kernel: [] ? enqueue_entity+0x24e/0xaa0 juil. 19 09:12:57 zafu kernel: [] extent_writepages+0x5c/0x90 [btrfs] juil. 19 09:12:57 zafu kernel: [] ? __btrfs_submit_bio_start_direct_io+0x40/0x40 [btrfs] juil. 19 09:12:57 zafu kernel: [] btrfs_writepages+0x28/0x30 [btrfs] juil. 19 09:12:57 zafu kernel: [] do_writepages+0x1e/0x30 juil. 19 09:12:57 zafu kernel: [] __filemap_fdatawrite_range+0x5d/0x80 juil. 19 09:12:57 zafu kernel: [] filemap_flush+0x1c/0x20 juil. 19 09:12:57 zafu kernel: [] btrfs_run_delalloc_work+0x5a/0xa0 [btrfs] juil. 19 09:12:57 zafu kernel: [] normal_work_helper+0x77/0x350 [btrfs] juil. 19 09:12:57 zafu kernel: [] process_one_work+0x168/0x450 juil. 19 09:12:57 zafu kernel: [] worker_thread+0x132/0x3e0 juil. 19 09:12:57 zafu kernel: [] ? manage_workers.isra.23+0x2d0/0x2d0 juil. 19 09:12:57 zafu kernel: [] kthread+0xea/0x100 juil. 19 09:12:57 zafu kernel: [] ? kthread_create_on_node+0x1b0/0x1b0 juil. 19 09:12:57 zafu kernel: [] ret_from_fork+0x7c/0xb0 juil. 19 09:12:57 zafu kernel: [] ? kthread_create_on_node+0x1b0/0x1b0 -- Swâmi Petaramesh http://petaramesh.org PGP 9076E32E