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=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 0536DC433DF for ; Sun, 7 Jun 2020 17:44:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB36B2073B for ; Sun, 7 Jun 2020 17:44:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726732AbgFGRom (ORCPT ); Sun, 7 Jun 2020 13:44:42 -0400 Received: from mout.kundenserver.de ([212.227.17.13]:42651 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726683AbgFGRol (ORCPT ); Sun, 7 Jun 2020 13:44:41 -0400 Received: from 'smile.earth' ([95.89.4.93]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MvJwN-1ir7bx2zmz-00rKDP; Sun, 07 Jun 2020 19:44:36 +0200 X-Virus-Scanned: amavisd at 'smile.earth' From: Hans-Peter Jansen To: linux-nfs , Anthony Joseph Messina Subject: Re: general protection fault, probably for non-canonical address in nfsd Date: Sun, 07 Jun 2020 19:44:35 +0200 Message-ID: <9727420.yF10LQ635x@xrated> In-Reply-To: <11558085.O9o76ZdvQC@linux-ws1.messinet.com> References: <15780697.tcFqIYE18H@xrated> <11558085.O9o76ZdvQC@linux-ws1.messinet.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V03:K1:BgrKFYAsrmiPVqBD5o+jBRBgEO4MTR9c2pb4zXhbEUqgBsd+mL3 mfLxN6WiTohLYHkSoVWYBOWjfrQhoUCdzvi0avM0RjXOBNazd0mayYY8sSLkl0EfaeocNNg 8P8c7cef0//UCf4RE+obwHQ0pj8pdZNi3e2U3aOln4WVed5nPxGKgAXBafVK0qHjBeTj4Y7 KKh1ETVbnCZftJGtFRZOA== X-UI-Out-Filterresults: notjunk:1;V03:K0:k5ZMofGx2rs=:/OTvSnVOpHEwwx+qHDzQ2A Z7DkDwnCCA28qX1+U6c34p/NNSJcHaBbV59+T50+Ie1H6D9ffof4qMpVPgqdXdViqzYZC3ugp OdvspszyW9b+bWNP6+qg5XODCgneSkVS7qGLcAPLkzF48hRLdtTTaP6KDZoUUczAw35q3vtK2 C1zAFLVlyN/ihMDFbP3Kp6ImaLTrLEHWDsiPtgGdEc5lmRERw5wTFqicJ4FUPAL4jNsb6CatY RdmsGLxdII1ByXIXJt0Ww2At0C76HBFqlyG02nKqmERVBDTmFJrw8RcKalvzZfxu6oYdUH7MW qz1IqqE6Lh042C+r6dTJ1UH2JH+/71K4ZYKidxqlN0NAHkWfKIfWibf4ZmCK5Y3bspa4N40ve A//7byC8edd6XNFMDKNW09GFSjUg/4wff6TQi5pTJ61+wZe9VtUB86P/5aPrSSoXC26TdPaqo 7dfm3C1wkxhfKq+jZco/U1T1yl5boTEZWWTDp5mzq3V7CUhIzRyuoGyadOudF7ERHw4PwMH9Q SPY8Yeqhz4OpSmP1V/eNzhMhnXRny11qGEqpElEVFHM1ZMVhZDhRh+4vyYO/aMbVDuOOG8Ikl gQLN1+oEgz77fqwRqlCA/OPPfKBnC6KLVjgI5T+7s+3tEjUND6QWGJ2G21BR/8y0UsQU8G0F4 m2Cu6BbXPO0LlXwM2oI1TH2wnuNLbqhOoSLUqwFm0RgPXwap6DQ1AfZbaRwWfBy+/V6KGvnyL Gf+7bgslIy62Net3b1PA7xP3pqPikyrMOI2RjKOTLWoEkuxFM/8GZN8OK5dVnZWBdV//H9GFv skQBvEOo+CmEwoSzIJ3cLFXjkehMJj3GHdY3gkzKGDg58zJecI= Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Am Sonntag, 7. Juni 2020, 18:01:55 CEST schrieb Anthony Joseph Messina: > On Sunday, June 7, 2020 10:32:44 AM CDT Hans-Peter Jansen wrote: > > Hi, > > > > after upgrading the kernel from 5.6.11 to 5.6.14, we suffer from regular > > crashes of nfsd here: > > > > 2020-06-07T01:32:43.600306+02:00 server rpc.mountd[2664]: authenticated > > mount request from 192.168.3.16:303 for /work (/work) > > 2020-06-07T01:32:43.602594+02:00 server rpc.mountd[2664]: authenticated > > mount request from 192.168.3.16:304 for /work/vmware (/work) > > 2020-06-07T01:32:43.602971+02:00 server rpc.mountd[2664]: authenticated > > mount request from 192.168.3.16:305 for /work/vSphere (/work) > > 2020-06-07T01:32:43.606276+02:00 server kernel: [51901.089211] general > > protection fault, probably for non-canonical address 0xb9159d506ba40000: > > 0000 [#1] SMP PTI 2020-06-07T01:32:43.606284+02:00 server kernel: > > [51901.089226] CPU: 1 PID: 3190 Comm: nfsd Tainted: G O > > 5.6.14-lp151.2-default #1 openSUSE Tumbleweed (unreleased) > > 2020-06-07T01:32:43.606286+02:00 server kernel: [51901.089234] Hardware > > name: System manufacturer System Product Name/P7F-E, BIOS 0906 > > I see similar issues in Fedora kernels 5.6.14 through 5.6.16 > https://bugzilla.redhat.com/show_bug.cgi?id=1839287 > > On the client I mount /home with sec=krb5p, and /mnt/koji with sec=krb5 Thanks for confirmation. Apart from the hassle with server reboots, this issue has some DOS potential, I'm afraid. Cheers, Pete