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=0.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,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 DC502C433DF for ; Thu, 14 May 2020 10:26:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB1C6206DA for ; Thu, 14 May 2020 10:26:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="h6Gnw9S4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726010AbgENK0o (ORCPT ); Thu, 14 May 2020 06:26:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725955AbgENK0n (ORCPT ); Thu, 14 May 2020 06:26:43 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62BDFC061A0C for ; Thu, 14 May 2020 03:26:42 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id f6so1087938pgm.1 for ; Thu, 14 May 2020 03:26:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=F/AuceWv1rF5Dq0GrZElQ2Gk8jkt6NdP+z8rO7F9owk=; b=h6Gnw9S4dFldcQwrsdThMnZN3p9N4VPz713kgCFGrlxgCNcRNlQ+ziYH/1+RbochFv PfhX2oPWZ1p2OpHxqwRsNnHzmD7YXBaYDE4vkzN5Cn8KvsMIiNZwzNJwKvyvLL+xYb0u 2PZzSRxP1DVnWB9pndMJgg3LGmiMvm+qAjRY9Q0mM9P49EQmyn5hlGH/Cl8VhdFN4CZ+ v/LL0OIrP3XzjuiNDTykRRWX3rHimWUBr9AQb4GIvT0bxrhrnMXSddzz1iGP3p2rXCVU zk0+2aC9kPWjd+OMBoxaah9PbtbROUJw/svHOL4wjyyPM+GlsWNfZlTIxewlxOPFnYYo 1yCA== 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=F/AuceWv1rF5Dq0GrZElQ2Gk8jkt6NdP+z8rO7F9owk=; b=hevDuJKCw+PHQPen2sdSNNMaCISChvlQqViN/gAJcDOhDXBvHeriRsrrz2PnxWBrPq T8JmaqDXPGekKA7wU6S2FXFZb+oR7BrRuHC2zqkeilxB28/orGVwd4mQOH3BSAAPu6fL deqmLVBPUD/eNXGbnXflBBX6RMpgRFoeM8v536W/OC1Lw/xynbq697Wd+Q3yNP7nTLrF TPnaQNe0abOhrWEnY0s8cLEUD3Z/xrA9xOpbh9tbYdfJMsJVa2h91p6ul7UVN7CuB6Mn 986HV6207Xou+Y8LS/vV8vGZ+zc11IcTH/yTDgYU6oxsE2uou24zL4/zoF69In8RhtyT uBuQ== X-Gm-Message-State: AOAM5307OTcW7dt2sw+6jy4p8mhei9AgPHiPQLg2It+d7RgDrcld04xV 5Eg9cF3OS0E3W8G7V2k9pUHGUs/rclI8pb2eDoln6f54d9bMeA== X-Google-Smtp-Source: ABdhPJz0nN9BbpX5JiBI30dyJRwp90NUsSRKmFdScymSZlRhXNd9GDRk8jN5Kvjm3wNcfnZFt7Kq3z3fNBITWxTcrXo= X-Received: by 2002:a62:3442:: with SMTP id b63mr2291000pfa.137.1589452001410; Thu, 14 May 2020 03:26:41 -0700 (PDT) MIME-Version: 1.0 From: sea you Date: Thu, 14 May 2020 12:26:30 +0200 Message-ID: Subject: Kernel panic in laundromat_main on 5.3.0-46-generic (Ubuntu HWE) To: linux-nfs@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hi all, Today we've seen a kernel panic that looks like related to delegations and laundromat ... [1388051.959652] Call Trace: [1388051.959984] unhash_delegation_locked+0x39/0xa0 [nfsd] [1388051.960631] laundromat_main+0x235/0x5a0 [nfsd] [1388051.961234] process_one_work+0x1fd/0x3f0 [1388051.961803] worker_thread+0x34/0x410 [1388051.962281] kthread+0x121/0x140 [1388051.962698] ? process_one_work+0x3f0/0x3f0 [1388051.963210] ? kthread_park+0xb0/0xb0 [1388051.963690] ret_from_fork+0x22/0x40 .... In the link below you'll find what has been captured from the console. https://pastebin.com/raw/CdpMfUAK I couldn't really find any reference to this in the mailing list history so I assume we might have hit a bug that is unknown so far. Best regards, Doma