Date: Tue, 28 Aug 2012 16:13:22 +0100 From: =?ISO-8859-1?Q?Attila_Bog=E1r?= <attila.bogar@linguamatics.com> To: freebsd-fs@FreeBSD.org Subject: Need hints debugging KGSSAPI Message-ID: <503CE012.3040408@linguamatics.com>
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Hi, I'd like to spend some time finding out myself what's wrong with the kerberized nfs server on the FreeBSD 9-STABLE. I thought the solution is to simply force DES+RFC1964 GSSAPI, but unfortunately it's not that simple. I built a patched nfs-utils package by merging the patch referenced from https://bugzilla.redhat.com/show_bug.cgi?id=802469 - with the legacy option did not resolve the problem. I have some wireshark traces which show that one EL6 box get 3 times auth_denied however the other succeeds for the 3rd time. I can reproduce this. My kernel is a GENERIC + some option as per Rick's page: options KGSSAPI device crypto device cryptodev I know, that all interesting NFS/GSSAPI job is done within kernel space. I suppose it's not possible to unload the KGSSAPI module: http://svnweb.freebsd.org/base/head/sys/kgssapi/gss_impl.c?view=markup&pathrev=224084 What's the best way to debug the kernel other than inserting debug messages into the source tree+recompiling+rebooting? What debugger do you recommend? Is there an up-to-date tutorial on FreeBSD kernel debugging? Any constructive comments appreciated. Thanks, Attila
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