diff --git a/lib/libzfs/libzfs_mount.c b/lib/libzfs/libzfs_mount.c
index 59b98a2845..252112e24b 100644
--- a/lib/libzfs/libzfs_mount.c
+++ b/lib/libzfs/libzfs_mount.c
@@ -664,7 +664,7 @@ zfs_unmount(zfs_handle_t *zhp, const char *mountpoint, int flags)
 		 * then get freed later. We strdup it to play it safe.
 		 */
 		if (mountpoint == NULL)
-			mntpt = zfs_strdup(hdl, entry.mnt_special);
+			mntpt = zfs_strdup(hdl, entry.mnt_mountp);
 		else
 			mntpt = zfs_strdup(hdl, mountpoint);
 
diff --git a/tests/test-runner/bin/zts-report.py b/tests/test-runner/bin/zts-report.py
index d4e743a171..efee5d989b 100755
--- a/tests/test-runner/bin/zts-report.py
+++ b/tests/test-runner/bin/zts-report.py
@@ -184,6 +184,7 @@ known = {
     'removal/removal_with_zdb': ['SKIP', known_reason],
     'rootpool/setup': ['SKIP', na_reason],
     'rsend/rsend_008_pos': ['SKIP', '6066'],
+    'snapshot/rollback_003_pos': ['SKIP', '6143'],
     'vdev_zaps/vdev_zaps_007_pos': ['FAIL', known_reason],
     'xattr/xattr_008_pos': ['SKIP', na_reason],
     'xattr/xattr_009_neg': ['SKIP', na_reason],
diff --git a/tests/zfs-tests/tests/functional/snapshot/rollback_003_pos.ksh b/tests/zfs-tests/tests/functional/snapshot/rollback_003_pos.ksh
index 9b1e400db5..342e7df58f 100755
--- a/tests/zfs-tests/tests/functional/snapshot/rollback_003_pos.ksh
+++ b/tests/zfs-tests/tests/functional/snapshot/rollback_003_pos.ksh
@@ -48,6 +48,10 @@
 
 verify_runnable "both"
 
+if is_linux; then
+	log_unsupported "Test case is known to fail on Linux"
+fi
+
 function cleanup
 {
 	typeset snap=""