Date: Mon, 15 Oct 2012 13:38:25 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r241582 - head/sys/rpc/rpcsec_gss Message-ID: <201210151338.q9FDcPCj099144@svn.freebsd.org>
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Author: rmacklem Date: Mon Oct 15 13:38:25 2012 New Revision: 241582 URL: http://svn.freebsd.org/changeset/base/241582 Log: Add a comment describing why r241097 was done. Suggested by: rwatson MFC after: 1 week Modified: head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c Modified: head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c ============================================================================== --- head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c Mon Oct 15 13:20:08 2012 (r241581) +++ head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c Mon Oct 15 13:38:25 2012 (r241582) @@ -1024,6 +1024,17 @@ svc_rpc_gss_validate(struct svc_rpc_gss_ if (maj_stat != GSS_S_COMPLETE) { rpc_gss_log_status("gss_verify_mic", client->cl_mech, maj_stat, min_stat); + /* + * Attila Bogar and Herbert Poeckl reported similar problems + * w.r.t. a Linux NFS client doing a krb5 NFS mount against the + * FreeBSD server. We determined this was a Linux bug: + * http://www.spinics.net/lists/linux-nfs/msg32466.html, where + * the mount failed to work because a Destroy operation with a + * bogus encrypted checksum destroyed the authenticator handle. + * Since the checksum is bogus (gss_verify_mic() failed), it + * doesn't make sense to destroy the handle and not doing so + * fixes the Linux mount. + */ if (gcproc != RPCSEC_GSS_DESTROY) client->cl_state = CLIENT_STALE; return (FALSE);
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