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=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 DD66DC7618F for ; Fri, 26 Jul 2019 19:10:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B109C21994 for ; Fri, 26 Jul 2019 19:10:46 +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="CR3zpUQV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727875AbfGZTKp (ORCPT ); Fri, 26 Jul 2019 15:10:45 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:38048 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726970AbfGZTKp (ORCPT ); Fri, 26 Jul 2019 15:10:45 -0400 Received: by mail-wr1-f67.google.com with SMTP id g17so55477576wrr.5 for ; Fri, 26 Jul 2019 12:10:44 -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:content-transfer-encoding; bh=8CuRXMXrUZ1AACmNbFXBcIsdlJEkTedjFr/PwtDrJPI=; b=CR3zpUQVsaj27yhYXOxHfUsIZTvhx8s37Pz7MUeqc1eT4fCjVDnV50MImkjVW+pmJW +OElGoFplgAD86jUFmArO+ikOEA2KKIhhygOslb0mPf4PUULcYUkbhi/blCxK8NrP2ev RieHAanKp+HkrV+M94VmA/988Sbu7cuTyhplEAuHh/FfPuvrUieeeGhEfnxGAXew9t/z w9QhwGtG9RQK7HEseBQQ6JsqEsD2kI5O4ZdmFBQk+xpd4M4PY+HqeZzqP9lWDWJXwFn+ wwtFmQrTWQ9fX3CkLvw4TT59l+kniHmyhUn+sN+ItusipCksmHH9T4O4+mY9lVoTVfrg n5hA== 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:content-transfer-encoding; bh=8CuRXMXrUZ1AACmNbFXBcIsdlJEkTedjFr/PwtDrJPI=; b=s/gt518t4ft9DCmkoB0kuOpRbqERI3HYIxlzYC23ieeHMLeumuHN0pNooWZcmHcyGD CLxlHn5jJLsPEhFsUWu0tMEB8fjJrGjGTucppOIxSsigKBu6iULujRj9cUpDACl+94Se wordaWcBahglsU3eCytJUKqITZ2hI5TY78jrsXD8tKUoGbDPZi1H4EZIr3OhPYDdpJPz URC+T7Yo+OkBzt5xRLZlantGe8FNpAOGaS2bkR/UNmyxXrTTAKfGzr0ODxE8Jz0HzwA8 E3kzlwEgidUd5pPlsG0Gnds8eA38NY4GDvEPRw24qx+zWubD8bbzFzBTdff27xMsZZ74 jfzg== X-Gm-Message-State: APjAAAXvK7gTpNG1M89StEqR75GoyUbXO7IVCJ3jNQZiB1uGqoRAstxT igGrS4/lPxRiy5Fbq79vzAgzMnXSZ+zYjFbVKXbQZlb0 X-Google-Smtp-Source: APXvYqwRhXzkWRgPgboPqtnOnM6ZjNXdsJ3VNPozA7FanA18FzGxAX8q0fB0F5+LiVu+izPWvYhmIaZllLGJfPrh5XE= X-Received: by 2002:a5d:6911:: with SMTP id t17mr1541324wru.268.1564168243514; Fri, 26 Jul 2019 12:10:43 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Chris Murphy Date: Fri, 26 Jul 2019 13:10:32 -0600 Message-ID: Subject: Re: 5.3.0-0.rc1 various tasks blocked for more than 120 seconds To: Nikolay Borisov Cc: Chris Murphy , Btrfs BTRFS Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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 1:07 PM Nikolay Borisov wrote: > > > > On 26.07.19 =D0=B3. 22:00 =D1=87., Chris Murphy wrote: > > 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 0x8000400= 0 > >> 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 [btrf= s] > >> 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 [btrf= s] > >> 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 pro= blem? > > https://lore.kernel.org/linux-btrfs/20190725082729.14109-3-nborisov@sus= e.com/ > > Likely yes. Yes it's fixed, or yes it's different? --=20 Chris Murphy