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 X-Spam-Level: X-Spam-Status: No, score=-0.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_SBL,URIBL_SBL_A autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19982C7618F for ; Fri, 26 Jul 2019 18:43:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E027B2077C for ; Fri, 26 Jul 2019 18:43:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=colorremedies-com.20150623.gappssmtp.com header.i=@colorremedies-com.20150623.gappssmtp.com header.b="QNuIK0Sf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388141AbfGZSnn (ORCPT ); Fri, 26 Jul 2019 14:43:43 -0400 Received: from mail-wr1-f48.google.com ([209.85.221.48]:46195 "EHLO mail-wr1-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387440AbfGZSnn (ORCPT ); Fri, 26 Jul 2019 14:43:43 -0400 Received: by mail-wr1-f48.google.com with SMTP id z1so55383184wru.13 for ; Fri, 26 Jul 2019 11:43:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=colorremedies-com.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=rKFdfrZnKwvV47yr51OW9jjzCxaEzCl7Vn56a1F/ZZM=; b=QNuIK0SfPpxuKdfY5lN11YIW6LkO4cACWsyPt0uoWmqtEWMhYCw+jV/yUwuy/jf5+I Iz2SaqOHwhlL+naRCYgWAyKwHVVTnowyEZEhzo2BIzTX+sM5O1QPjUwBFV5uXamiQCkH 9hq3HWrpxZkg9Ffygp/ATI/49ud/3pog1p4yw63KKwSDsQ1iHMTLCA8ZqAxilzHh1buO Y1+j4r9w1q9POpS6OzGG7WyH1WMv4TA8j+mkzxEnJz4jkj3n6HP3lQPfJujxUeaPtn8g qqwlV9qmenTM4mM5q5NuOWgLJTzleaxTuDauF1fN6W3M+JWRY3UQl+/IG1S08nLTiu1O pMrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=rKFdfrZnKwvV47yr51OW9jjzCxaEzCl7Vn56a1F/ZZM=; b=sAj5Xvu2yUeqrf5UoCmQlvaVSqGof8uYPCXq1zjsXTp7j3ezV/8Lm+KyWzacXHOCEY eCIOjuyBaxRoiOZzTA0RS8j/7ifACazLSZktSk45RzOBJfVbyQVNWffVREoH+8s+GEOG eTX8eQz4N1olFyA4wO4VVLkCpEV1Bcyt3EDwvekJ1uHGrNf9S9isEDnkdVmRhHFPdSvg 7KaG0Tyzy3g1FiYRIwZ3MziSOSa6RELAYwSrpPBS5xXWv0vp6rK2ApcJa791W3wBXQba qVN6PNeL+hZcIDYVHTccHBrqAd4WQltEqt9AecFlFwQGHvShoB8BFEqc/LhH4GN1niMy MNTg== X-Gm-Message-State: APjAAAXEaTKIREjceeF5x1Y81lYD3nZ6f2sMryQjKLpl2TTSQTmwCdKG dRv6q1s70Hz37GGp56ncNBPnIgytoK3arTniSSQG7NbVd/s= X-Google-Smtp-Source: APXvYqyjzpxhKndLLfC5BnX7tMRa6nFgdnt9zJemjkmwY9IZFvwoJ4/nil+KA89CQsiy9tZ7Go4bszqjDrOFkeIKI7c= X-Received: by 2002:adf:f851:: with SMTP id d17mr103773206wrq.77.1564166621083; Fri, 26 Jul 2019 11:43:41 -0700 (PDT) MIME-Version: 1.0 From: Chris Murphy Date: Fri, 26 Jul 2019 12:43:30 -0600 Message-ID: Subject: 5.3.0-0.rc1 various tasks blocked for more than 120 seconds To: Btrfs BTRFS Content-Type: text/plain; charset="UTF-8" Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Seeing this with Fedora kernel 5.3.0-0.rc1.git3.1.fc31.x86_64 which translates to git bed38c3e2dca It's causing automated OS installations to hang indefinitely, only on Btrfs. This is an excerpt of the first of many call traces: 15:52:20,316 ERR kernel:INFO: task kworker/u4:0:7 blocked for more than 122 seconds. 15:52:20,316 ERR kernel: Not tainted 5.3.0-0.rc1.git3.1.fc31.x86_64 #1 15:52:20,316 ERR kernel:"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 15:52:20,316 INFO kernel:kworker/u4:0 D12192 7 2 0x80004000 15:52:20,317 INFO kernel:Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] 15:52:20,317 WARNING kernel:Call Trace: 15:52:20,317 WARNING kernel: ? __schedule+0x352/0x900 15:52:20,317 WARNING kernel: schedule+0x3a/0xb0 15:52:20,317 WARNING kernel: btrfs_tree_read_lock+0xa3/0x260 [btrfs] 15:52:20,317 WARNING kernel: ? finish_wait+0x90/0x90 15:52:20,317 WARNING kernel: btrfs_read_lock_root_node+0x2f/0x40 [btrfs] 15:52:20,317 WARNING kernel: btrfs_search_slot+0x601/0x9d0 [btrfs] 15:52:20,317 WARNING kernel: btrfs_lookup_file_extent+0x4c/0x70 [btrfs] 15:52:20,317 WARNING kernel: __btrfs_drop_extents+0x16e/0xe00 [btrfs] 15:52:20,317 WARNING kernel: ? __set_extent_bit+0x55f/0x6a0 [btrfs] 15:52:20,317 WARNING kernel: ? kmem_cache_free+0x368/0x420 15:52:20,318 WARNING kernel: insert_reserved_file_extent.constprop.0+0x93/0x2e0 [btrfs] 15:52:20,318 WARNING kernel: ? start_transaction+0x95/0x4e0 [btrfs] 15:52:20,318 WARNING kernel: btrfs_finish_ordered_io+0x3da/0x840 [btrfs] 15:52:20,318 WARNING kernel: normal_work_helper+0xd7/0x500 [btrfs] 15:52:20,318 WARNING kernel: process_one_work+0x272/0x5a0 15:52:20,318 WARNING kernel: worker_thread+0x50/0x3b0 15:52:20,318 WARNING kernel: kthread+0x108/0x140 15:52:20,318 WARNING kernel: ? process_one_work+0x5a0/0x5a0 15:52:20,318 WARNING kernel: ? kthread_park+0x80/0x80 15:52:20,318 WARNING kernel: ret_from_fork+0x3a/0x50 15:52:20,318 ERR kernel:INFO: task kworker/u4:1:31 blocked for more than 122 seconds. The full log is here: https://openqa.fedoraproject.org/tests/426671/file/_do_install_and_reboot-syslog -- Chris Murphy