From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mtareserve85.acsu.buffalo.edu ([128.205.6.181]:59165 "EHLO mtareserve1.acsu.buffalo.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932071AbcCHQ6C (ORCPT ); Tue, 8 Mar 2016 11:58:02 -0500 Received: from localmailh.acsu.buffalo.edu (localmailh.acsu.buffalo.edu [128.205.4.31]) by mtareserve1.acsu.buffalo.edu (Postfix) with ESMTP id D1F6ED9C588 for ; Tue, 8 Mar 2016 11:58:00 -0500 (EST) Received: from localmailh.acsu.buffalo.edu (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id C5F284006B for ; Tue, 8 Mar 2016 11:58:00 -0500 (EST) Received: from localmailh.acsu.buffalo.edu (localhost [127.0.0.1]) by localmailh.acsu.buffalo.edu (Postfix) with ESMTP id 904C440080 for ; Tue, 8 Mar 2016 11:57:59 -0500 (EST) Received: from smtp.buffalo.edu (smtp2.acsu.buffalo.edu [128.205.5.254]) by localmailh.acsu.buffalo.edu (Prefixe) with ESMTP id 8EBC64006B for ; Tue, 8 Mar 2016 11:57:59 -0500 (EST) Received: from flyline.acsu.buffalo.edu (porkchopexpress.acsu.buffalo.edu [128.205.123.27]) by smtp.buffalo.edu (Postfix) with ESMTP id 8A2A7D94973 for ; Tue, 8 Mar 2016 11:57:59 -0500 (EST) Message-ID: <56DF0497.6090407@buffalo.edu> Date: Tue, 08 Mar 2016 11:57:59 -0500 From: Mark Valites MIME-Version: 1.0 To: linux-nfs@vger.kernel.org Subject: Re: RH 7 nfs-utils update causes segfault References: <56DDA2C2.3010806@buffalo.edu> <56DDABE2.3040204@buffalo.edu> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: On 03/07/2016 02:49 PM, Benjamin Coddington wrote: > Best bet would be to attache a debugger to rpc.gssd and get a stack trace of > it when it crashes. That will give us something to work from. > > You can do that with gdb -p . Something like `gdb -p $(pidof > rpc.gssd)` will work -- then type "continue" to let the process continue to > run. When it fails you can enter "bt" to emit a back trace. That > information would be very helpful. Thank you for the gdb usage suggestion - I needed it... Here's the output: GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: . Attaching to process 492 Reading symbols from /usr/sbin/rpc.gssd...Reading symbols from /usr/lib/debug/usr/sbin/rpc.gssd.debug...done. done. Reading symbols from /lib64/libtirpc.so.1...Reading symbols from /lib64/libtirpc.so.1...(no debugging symbols found)...done. (no debugging symbols found)...done. Loaded symbols for /lib64/libtirpc.so.1 Reading symbols from /lib64/libgssapi_krb5.so.2...Reading symbols from /usr/lib/debug/usr/lib64/libgssapi_krb5.so.2.2.debug...done. done. Loaded symbols for /lib64/libgssapi_krb5.so.2 Reading symbols from /lib64/libkrb5.so.3...Reading symbols from /usr/lib/debug/usr/lib64/libkrb5.so.3.3.debug...done. done. Loaded symbols for /lib64/libkrb5.so.3 Reading symbols from /lib64/libk5crypto.so.3...Reading symbols from /usr/lib/debug/usr/lib64/libk5crypto.so.3.1.debug...done. done. Loaded symbols for /lib64/libk5crypto.so.3 Reading symbols from /lib64/libcom_err.so.2...Reading symbols from /usr/lib/debug/usr/lib64/libcom_err.so.2.1.debug...done. done. Loaded symbols for /lib64/libcom_err.so.2 Reading symbols from /lib64/libc.so.6...Reading symbols from /usr/lib/debug/usr/lib64/libc-2.17.so.debug...done. done. Loaded symbols for /lib64/libc.so.6 Reading symbols from /lib64/libnsl.so.1...Reading symbols from /usr/lib/debug/usr/lib64/libnsl-2.17.so.debug...done. done. Loaded symbols for /lib64/libnsl.so.1 Reading symbols from /lib64/libpthread.so.0...Reading symbols from /usr/lib/debug/usr/lib64/libpthread-2.17.so.debug...done. done. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Loaded symbols for /lib64/libpthread.so.0 Reading symbols from /lib64/libkrb5support.so.0...Reading symbols from /usr/lib/debug/usr/lib64/libkrb5support.so.0.1.debug...done. done. Loaded symbols for /lib64/libkrb5support.so.0 Reading symbols from /lib64/libdl.so.2...Reading symbols from /usr/lib/debug/usr/lib64/libdl-2.17.so.debug...done. done. Loaded symbols for /lib64/libdl.so.2 Reading symbols from /lib64/libkeyutils.so.1...Reading symbols from /usr/lib/debug/usr/lib64/libkeyutils.so.1.5.debug...done. done. Loaded symbols for /lib64/libkeyutils.so.1 Reading symbols from /lib64/libresolv.so.2...Reading symbols from /usr/lib/debug/usr/lib64/libresolv-2.17.so.debug...done. done. Loaded symbols for /lib64/libresolv.so.2 Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from /usr/lib/debug/usr/lib64/ld-2.17.so.debug...done. done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib64/libselinux.so.1...Reading symbols from /usr/lib/debug/usr/lib64/libselinux.so.1.debug...done. done. Loaded symbols for /lib64/libselinux.so.1 Reading symbols from /lib64/libpcre.so.1...Reading symbols from /lib64/libpcre.so.1...(no debugging symbols found)...done. (no debugging symbols found)...done. Loaded symbols for /lib64/libpcre.so.1 Reading symbols from /lib64/liblzma.so.5...Reading symbols from /lib64/liblzma.so.5...(no debugging symbols found)...done. (no debugging symbols found)...done. Loaded symbols for /lib64/liblzma.so.5 Reading symbols from /usr/lib64/gssproxy/proxymech.so...Reading symbols from /usr/lib/debug/usr/lib64/gssproxy/proxymech.so.debug...done. done. Loaded symbols for /usr/lib64/gssproxy/proxymech.so Reading symbols from /lib64/libgssrpc.so.4...Reading symbols from /usr/lib/debug/usr/lib64/libgssrpc.so.4.2.debug...done. done. Loaded symbols for /lib64/libgssrpc.so.4 0x00007f4cd7ba4be9 in __GI_ppoll (fds=fds@entry=0x7f4cd9dc8b50, nfds=nfds@entry=1024, timeout=, timeout@entry=0x0, sigmask=sigmask@entry=0x7ffdd6f44770) at ../sysdeps/unix/sysv/linux/ppoll.c:51 51 result = INLINE_SYSCALL (ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8); Missing separate debuginfos, use: debuginfo-install libtirpc-0.2.4-0.6.el7.x86_64 pcre-8.32-15.el7.x86_64 xz-libs-5.1.2-12alpha.el7.x86_64 (gdb) continue Continuing. Program received signal SIG37, Real-time event 37. 0x00007f4cd7ba4be9 in __GI_ppoll (fds=fds@entry=0x7f4cd9dc8b50, nfds=nfds@entry=1024, timeout=, timeout@entry=0x0, sigmask=sigmask@entry=0x7ffdd6f44770) at ../sysdeps/unix/sysv/linux/ppoll.c:51 51 result = INLINE_SYSCALL (ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8); (gdb) bt #0 0x00007f4cd7ba4be9 in __GI_ppoll (fds=fds@entry=0x7f4cd9dc8b50, nfds=nfds@entry=1024, timeout=, timeout@entry=0x0, sigmask=sigmask@entry=0x7ffdd6f44770) at ../sysdeps/unix/sysv/linux/ppoll.c:51 #1 0x00007f4cd8c30587 in ppoll (__ss=0x7ffdd6f44770, __timeout=0x0, __nfds=1024, __fds=0x7f4cd9dc8b50) at /usr/include/bits/poll2.h:77 #2 gssd_poll (nfds=1024, fds=0x7f4cd9dc8b50) at gssd_main_loop.c:194 #3 gssd_run () at gssd_main_loop.c:258 #4 0x00007f4cd8c2f11a in main (argc=, argv=0x7ffdd6f449d8) at gssd.c:216