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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D8E5C433F5 for ; Tue, 26 Oct 2021 18:26:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 613BB61078 for ; Tue, 26 Oct 2021 18:26:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236913AbhJZS3H (ORCPT ); Tue, 26 Oct 2021 14:29:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236851AbhJZS3G (ORCPT ); Tue, 26 Oct 2021 14:29:06 -0400 Received: from mail-yb1-xb2d.google.com (mail-yb1-xb2d.google.com [IPv6:2607:f8b0:4864:20::b2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3A69C061745 for ; Tue, 26 Oct 2021 11:26:42 -0700 (PDT) Received: by mail-yb1-xb2d.google.com with SMTP id o12so33180340ybk.1 for ; Tue, 26 Oct 2021 11:26:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=colorremedies-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=XddF2Tusv4LByZKS6nvbLsvLyEXmiWFN1mSvHpfybbw=; b=Ehr6cFjCimx2guUsgtpkBfhmGUx73cfD+lgnGrjx5Wrj3ppf9R5BT7LXYgSdr4nT0z QcIsZB6o1nEdsnqZiKtUz5P82qC/ay3evfFBaSC1C3pacq1WDIsEg7La0Ui+FryB47mY 2ik+kk7u2lE6b6XHPk+iRnbdMZoT7+2KXxdmEP+QuIbWQtWhQ1Mwajc3y+gZfAgW6cMI WCWpt6KkKsGmXUw/Zyxe1JdfEyYChq4ynVMu0HVMnAVuyQK+jdeSqyQ4HTsSFlk3WrbC dh6Ma18vnne5QnC/yugcvHxLPFDI1bqzVcpcin0KIf4LbB8wX9eNhpebNfua1MSszd2Y ReXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=XddF2Tusv4LByZKS6nvbLsvLyEXmiWFN1mSvHpfybbw=; b=SdH6V2MBth9fCm3GUR3n9EyTymvzkhW1CT4vXRiDunjdKBPBsngeiBvUWG19huaOrI 6JuCmhc0Ony3GZ4AnNbWTGl64JOTZDEk06IrUjkRDrP6DqDmjfARw3fzuDUnln10lUtN 0GRM6FvEjOgB2JkRB4QonBDAL4za/PrbyYaTaYUi7oWLWB9zcoE9OuSruuNLmyeQp9Kn 9f6uLvlVMPb5zFta6bSmwwpbNeBphbKQmHV0ko7KOUnhdQSFtIHf6el95dPwhEeZHOKt FoC5oZf5nF2PXWmyuk/5/suZXtHMnPaPJ1UWJmey6wLdm4GjpA2rFf7Xd77lkDUOcXHS Mw9Q== X-Gm-Message-State: AOAM531fiieh6sEZckKkgcyV43eI5BnKautjB8Qb6NYBWw/FrUpPhUs/ Q+/L3xpMJWcZXcFagtVsZ22LKuK+KPZY4WEuep+SiA== X-Google-Smtp-Source: ABdhPJxSiHP2ymJjJUigKvtsZytwB3H94ehYFD/zKHHXHuqOTdD8xYtbyBGWarK7f3iKFJGRHOfIjlzqS9Go5kFO30M= X-Received: by 2002:a05:6902:102f:: with SMTP id x15mr24502528ybt.341.1635272802050; Tue, 26 Oct 2021 11:26:42 -0700 (PDT) MIME-Version: 1.0 References: <7de9iylb.fsf@damenly.su> <35owijrm.fsf@damenly.su> <9e746c1c-85e5-c766-26fa-a4d83f1bfd34@suse.com> <91185758-fdaf-f8da-01eb-a9932734fc09@suse.com> <435c0ba3-dab9-3d01-7d43-0d370ffa36aa@suse.com> In-Reply-To: From: Chris Murphy Date: Tue, 26 Oct 2021 14:26:26 -0400 Message-ID: Subject: Re: 5.14.9 aarch64 OOPS Workqueue: btrfs-delalloc btrfs_work_helper To: Nikolay Borisov Cc: Chris Murphy , Su Yue , Qu Wenruo , Qu Wenruo , Btrfs BTRFS Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Tue, Oct 26, 2021 at 2:14 PM Nikolay Borisov wrote: > > > > On 26.10.21 =D0=B3. 21:08, Chris Murphy wrote: > > I don't know whether the hang and crash are related at all. I've been > > unable to get a sysrq+t that shows anything when "dnf install > > libreoffice" hangs, which I suspect could be dbus related where a > > bunch of services get clobbered and restarted during the metric ton of > > dependencies that libreoffice brings into a cloud base image. But > > > Since this is a qemy virtual machine it's possible to acquire a direct > memory dump from qemu's management console. There's a dump-guest-memory > via qemu's management console alternatively via virsh one can do the > procedure described here: > https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/= html/virtualization_deployment_and_administration_guide/sect-domain_command= s-creating_a_dump_file_of_a_domains_core > > > if you can provide a memory dump + kernel vmlinux then I will be happy > to look into this. In the meantime the barriers fixes should remedy crash= . OK thanks. I'll start testing a kernel built with this patch, and then move on to capturing a memory dump of the VM if we're still seeing hangs. --=20 Chris Murphy