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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