commit a709f25c1da4a2fb44a1f3fd060298fbbd88aa3c
Author: Steve Dickson <steved@redhat.com>
Date:   Tue May 14 15:52:50 2019 -0400

    mount: Report correct error in the fall_back cases.
    
    In mount auto negotiation, a v3 mount is tried
    when the v4 fails with error that could mean
    v4 is not supported.
    
    When the v3 mount fails, the original v4 failure
    should be used to set the errno, not the v3 failure.
    
    Fixes:https://bugzilla.redhat.com/show_bug.cgi?id=1709961
    Signed-off-by: Steve Dickson <steved@redhat.com>

diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index 1bb7a73..901f995 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -889,7 +889,7 @@ out:
  */
 static int nfs_autonegotiate(struct nfsmount_info *mi)
 {
-	int result;
+	int result, olderrno;
 
 	result = nfs_try_mount_v4(mi);
 check_result:
@@ -949,7 +949,18 @@ fall_back:
 	if (mi->version.v_mode == V_GENERAL)
 		/* v2,3 fallback not allowed */
 		return result;
-	return nfs_try_mount_v3v2(mi, FALSE);
+
+	/*
+	 * Save the original errno in case the v3 
+	 * mount fails from one of the fall_back cases. 
+	 * Report the first failure not the v3 mount failure
+	 */
+	olderrno = errno;
+	if ((result = nfs_try_mount_v3v2(mi, FALSE)))
+		return result;
+
+	errno = olderrno;
+	return result;
 }
 
 /*