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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 27687C7618F for ; Fri, 26 Jul 2019 19:00:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E3A4D22BEF for ; Fri, 26 Jul 2019 19:00:53 +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="ILavBodI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388198AbfGZTAw (ORCPT ); Fri, 26 Jul 2019 15:00:52 -0400 Received: from mail-wr1-f44.google.com ([209.85.221.44]:44197 "EHLO mail-wr1-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387743AbfGZTAw (ORCPT ); Fri, 26 Jul 2019 15:00:52 -0400 Received: by mail-wr1-f44.google.com with SMTP id p17so55419097wrf.11 for ; Fri, 26 Jul 2019 12:00:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=colorremedies-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=3HDmYL7LYF43unjnNLaEU7YBVIeeox6ELqg5o0ga+48=; b=ILavBodILNDl42PjnOsvWI8hBKWVGvACxV6wkMPYIBetmfMsWY3gj134exYvrSQUZl /jTQsw1ttvJoD88PIC1DSHRSN1q1CrZOXqh2S769T3tT8tLLMSlAAypXTimqWHrGcFl0 l3EWRMfz4o1HQeXNJNwBDFQ5s3e1gWmo65I3pUdW0e+UJ7H2xDcNQOeOyFrddiPjQS3O KoK/Ft7y/l+qYR6vebY/r9F5VXn6l0vjPAEIbs3YWbBqb7XKwkl5NFTfjCYNj7zmdGyC ZhCoAa3ikTCNbZjr1RRXB7jEI9phF8Dwo3CIACig1nzdwfxaLZ4QbSw2//sd0FNQW/4S lJag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=3HDmYL7LYF43unjnNLaEU7YBVIeeox6ELqg5o0ga+48=; b=NcGS1I7IKAfWIRmSLRxrykQDKWdvKeZhKOT6Y2gTX6jMQxO6S/Nfu0/muKTeF9rPDg pu/M4WJUBII7KcPebjyh1pktjKt7bVE8p7HFTXUJRI89dM9MSnLwNVCsbkpBhN0Fl+nE 2GHQ1hfpAN848oIxRvaU+JfrjPcsSgKcB41TvHRDgWd7lkstxVsiGeAXkI7ilkLtF75C Tl3joGc5pP9TgBKKafn4uPYOzosUKbW3eq4bKxgojJV9eo392Sly2oBpTXYVLSbGMXto sUVgylfjzfY0s+HE69GxKv9KHZDFxiWZyl2a5zEbNdgvncucDkOZVawsFdWIVA4eKV94 FrsA== X-Gm-Message-State: APjAAAWUup3Bbi5pX68f4WF8XrHIbGXn9wuPVOon3go4w0B4m6TV6mkG neG4aZcDPQtSfrLgb6vOTidtDXs7ydeKkbEfunHWncZBsis= X-Google-Smtp-Source: APXvYqy9vW1Hi2enYKPMll4pe0i/Y/RfEAaE03ydCOQ09GK6c1FgzEDLDIPhqchbnRhygwAJHIUL3XTVpHeomrbXwKE= X-Received: by 2002:adf:f851:: with SMTP id d17mr103818370wrq.77.1564167650527; Fri, 26 Jul 2019 12:00:50 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Chris Murphy Date: Fri, 26 Jul 2019 13:00:39 -0600 Message-ID: Subject: Re: 5.3.0-0.rc1 various tasks blocked for more than 120 seconds To: Chris Murphy Cc: 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 On Fri, Jul 26, 2019 at 12:43 PM Chris Murphy wrote: > > 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. Is it related to this and maybe already fixed? Or is it a different problem? https://lore.kernel.org/linux-btrfs/20190725082729.14109-3-nborisov@suse.com/ -- Chris Murphy