From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41719C83F10 for ; Mon, 28 Aug 2023 05:08:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229656AbjH1FI0 (ORCPT ); Mon, 28 Aug 2023 01:08:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229583AbjH1FIJ (ORCPT ); Mon, 28 Aug 2023 01:08:09 -0400 Received: from out28-79.mail.aliyun.com (out28-79.mail.aliyun.com [115.124.28.79]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 362FCCC for ; Sun, 27 Aug 2023 22:08:05 -0700 (PDT) X-Alimail-AntiSpam: AC=CONTINUE;BC=0.04436772|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_alarm|0.0189875-0.000724597-0.980288;FP=0|0|0|0|0|-1|-1|-1;HT=ay29a033018047211;MF=wangyugui@e16-tech.com;NM=1;PH=DS;RN=1;RT=1;SR=0;TI=SMTPD_---.URQgWMM_1693199273; Received: from 192.168.2.112(mailfrom:wangyugui@e16-tech.com fp:SMTPD_---.URQgWMM_1693199273) by smtp.aliyun-inc.com; Mon, 28 Aug 2023 13:07:57 +0800 Date: Mon, 28 Aug 2023 13:07:58 +0800 From: Wang Yugui To: linux-btrfs@vger.kernel.org Subject: fstests(btrfs/100) triggered a dead-lock(of scrub?) Message-Id: <20230828130753.30B3.409509F4@e16-tech.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.81.04 [en] Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Hi, fstests(btrfs/100) triggered a dead-lock(of scrub?). frequency: It happened once only. yet not reproduced by 200 times. but it happened on a server with ECC memory. kernel btrfs version: 6.2 with some update applied to 6.1.y. sysrq(-w) result: [12462.772983] sysrq: Show Blocked State [12462.807604] task:btrfs-transacti state:D [12462.851608] stack:0 pid:435693 ppid:2 flags:0x00004000 [12462.851768] Call Trace: [12462.851891] [12462.852045] __schedule+0x2cb/0x880 [12462.852200] schedule+0x50/0xc0 [12462.852326] btrfs_scrub_pause+0xa9/0x110 [btrfs] [12463.066833] ? enqueue_task_stop+0x90/0x90 [12463.066957] btrfs_commit_transaction+0x1cf/0xbc0 [btrfs] [12463.281494] ? start_transaction+0xcf/0x610 [btrfs] [12463.496014] ? timers_update_migration+0x10/0x30 [12463.496142] transaction_kthread+0x173/0x1c0 [btrfs] [12463.496297] ? btrfs_cleanup_transaction+0x5f0/0x5f0 [btrfs] [12463.710824] kthread+0xe3/0x110 [12463.710951] ? kthread_complete_and_exit+0x20/0x20 [12463.711105] ret_from_fork+0x1f/0x30 [12463.711258] [12463.711391] task:btrfs state:D [12463.711536] stack:0 pid:436523 ppid:435331 flags:0x00004002 [12463.711688] Call Trace: [12463.711821] [12463.714618] __schedule+0x2cb/0x880 [12463.714756] schedule+0x50/0xc0 [12463.714902] scrub_simple_mirror+0x75b/0x820 [btrfs] [12463.715057] ? blk_mq_plug_issue_direct.constprop.91+0x85/0x120 [12463.715180] ? enqueue_task_stop+0x90/0x90 [12463.715307] ? __wake_up_common_lock+0x8e/0xd0 [12463.715432] scrub_stripe+0x33b/0x670 [btrfs] [12463.762911] scrub_chunk+0xc9/0x130 [btrfs] [12463.977412] scrub_enumerate_chunks+0x2af/0x760 [btrfs] [12464.191921] ? enqueue_task_stop+0x90/0x90 [12464.192042] btrfs_scrub_dev+0x25a/0x630 [btrfs] [12464.406545] ? start_transaction+0xcf/0x610 [btrfs] [12464.621032] btrfs_dev_replace_by_ioctl.cold.14+0x254/0x2fa [btrfs] [12464.835507] ? _copy_from_user+0x7f/0xa0 [12464.835631] btrfs_ioctl+0x1e30/0x26f0 [btrfs] [12464.908312] ? __filemap_fdatawait_range+0x71/0x140 [12464.908437] ? __x64_sys_ioctl+0x89/0xc0 [12464.908561] __x64_sys_ioctl+0x89/0xc0 [12464.908687] do_syscall_64+0x58/0x80 [12464.908848] ? __x64_sys_rt_sigaction+0xc8/0x100 [12464.909002] ? exit_to_user_mode_prepare+0x1af/0x1c0 [12464.909130] ? syscall_exit_to_user_mode+0x22/0x40 [12464.909285] ? do_syscall_64+0x67/0x80 [12464.909412] ? do_syscall_64+0x67/0x80 [12464.909565] ? syscall_exit_to_user_mode+0x22/0x40 [12464.909727] ? do_syscall_64+0x67/0x80 [12464.909881] ? exc_page_fault+0x64/0x140 [12464.910007] entry_SYSCALL_64_after_hwframe+0x64/0xce [12464.910134] RIP: 0033:0x7f499fc3ec6b [12464.910286] RSP: 002b:00007ffd63629078 EFLAGS: 00000246 [12464.910369] BTRFS error (device sda3): bdev /dev/mapper/error-test errs: wr 22, rd 3091, flush 0, corrupt 0, gen 0 [12464.910412] ORIG_RAX: 0000000000000010 [12464.910646] BTRFS error (device sda3): fixed up error at logical 3266019328 on dev /dev/mapper/error-test [12465.124932] RAX: ffffffffffffffda RBX: 00007ffd636290e0 RCX: 00007f499fc3ec6b [12465.154546] RDX: 00007ffd63629f10 RSI: 00000000ca289435 RDI: 0000000000000003 [12465.368963] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [12465.369118] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000003 [12465.369270] R13: 00007ffd6362b706 R14: 0000000000000000 R15: 0000562067f582e0 [12465.369400] There are a lot of message: # Just 'root XXX' are different in these warn messages. [12464.835561] BTRFS warning (device sda3): i/o error at logical 3266019328 on dev /dev/mapper/error-test, physical 1114341376, root 402, inode 294, offset 3936256, length 4096, links 1 (path: p7/d8/fa) [12464.908196] BTRFS warning (device sda3): i/o error at logical 3266019328 on dev /dev/mapper/error-test, physical 1114341376, root 401, inode 294, offset 3936256, length 4096, links 1 (path: p7/d8/fa) [12464.908209] BTRFS warning (device sda3): i/o error at logical 3266019328 on dev /dev/mapper/error-test, physical 1114341376, root 400, inode 294, offset 3936256, length 4096, links 1 (path: p7/d8/fa) [12464.908227] BTRFS warning (device sda3): i/o error at logical 3266019328 on dev /dev/mapper/error-test, physical 1114341376, root 399, inode 294, offset 3936256, length 4096, links 1 (path: p7/d8/fa) [12464.908235] BTRFS warning (device sda3): i/o error at logical 3266019328 on dev /dev/mapper/error-test, physical 1114341376, root 398, inode 294, offset 3936256, length 4096, links 1 (path: [12460.229783] BTRFS warning (device sda3): i/o error at logical 3266019328 on dev /dev/mapper/error-test, physical 1114341376, root 499, inode 294, offset 3936256, length 4096, links 1 (path: p7/d8/f16) Best Regards Wang Yugui (wangyugui@e16-tech.com) 2023/08/28