From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mtareserve60.acsu.buffalo.edu ([128.205.6.125]:59556 "EHLO mtareserve1.acsu.buffalo.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753060AbcCGPzI (ORCPT ); Mon, 7 Mar 2016 10:55:08 -0500 Received: from localmailh.acsu.buffalo.edu (localmailh.acsu.buffalo.edu [128.205.4.31]) by mtareserve1.acsu.buffalo.edu (Postfix) with ESMTP id 4CE6DD1BC53 for ; Mon, 7 Mar 2016 10:48:19 -0500 (EST) Received: from localmailh.acsu.buffalo.edu (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 4092D4006B for ; Mon, 7 Mar 2016 10:48:19 -0500 (EST) Received: from localmailh.acsu.buffalo.edu (localhost [127.0.0.1]) by localmailh.acsu.buffalo.edu (Postfix) with ESMTP id 0C48A40091 for ; Mon, 7 Mar 2016 10:48:19 -0500 (EST) Received: from smtp.buffalo.edu (smtp4.acsu.buffalo.edu [128.205.5.229]) by localmailh.acsu.buffalo.edu (Prefixe) with ESMTP id 0A78F4006B for ; Mon, 7 Mar 2016 10:48:19 -0500 (EST) Received: from flyline.acsu.buffalo.edu (porkchopexpress.acsu.buffalo.edu [128.205.123.27]) by smtp.buffalo.edu (Postfix) with ESMTP id 06E35E0BBB3 for ; Mon, 7 Mar 2016 10:48:19 -0500 (EST) Message-ID: <56DDA2C2.3010806@buffalo.edu> Date: Mon, 07 Mar 2016 10:48:18 -0500 From: Mark Valites MIME-Version: 1.0 To: linux-nfs@vger.kernel.org Subject: RH 7 nfs-utils update causes Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: I recently updated a Red Hat 7 host. After rebooting, the nfs mounts on it (nfsver3,sec=krb5) failed to mount, due to the gss daemon segfaulting when the mount attempt happened: [ 7.816487] FS-Cache: Loaded [ 7.887575] FS-Cache: Netfs 'nfs' registered for caching [ 7.931164] rpc.gssd[498]: segfault at 5544452e ip 00007fbc9d704ee6 sp 00007ffc37291678 error 4 in libc-2.17.so[7fbc9d5ca000+1b 4000] [ 7.964578] abrt-hook-ccpp[994]: segfault at 0 ip 00007fba2e09431b sp 00007ffefa92fb50 error 4 in libreport.so.0.0.1[7fba2e0860 00+25000] [ 7.965398] Process 994(abrt-hook-ccpp) has RLIMIT_CORE set to 1 [ 7.965483] Aborting core At mount time, The console displays these messages as well: RPC: AUTH_GSS upcall timed out. Please check user daemon is running. gssd will start without issue if started manually on its own, but dies if I subsequently try to manually mount any of the nfs mounts. I've isolated the issue down to the latest update in the nfs-utils package: Working: nfs-utils-1.3.0-0.21.el7.x86_64 Broken: nfs-utils-1.3.0-0.21.el7_2.x86_64 (note the '_v2' difference) gssd/the mounting works without issue after backing down to the older nfs-utils version. It looks similar to the following bug report (fixed in 1.3.1), but I'm not 100% convinced it's the same: https://bugzilla.redhat.com/show_bug.cgi?id=1108615 If this is in fact the issue, I would be happy keeping the updated nfs-utils version, but working around the issue via changing my krb5.conf, but I'm not sure where the *preferred*_realm comes from - I do have *default*_realm set in my krb5.conf. If that's not it, I'd be happy to provide any additional information that may assist in troubleshooting & welcome any suggestions, but I'd greatly prefer to retain the OS-supplied nfs-utils. -Mark