diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c
--- a/sys/kern/vfs_lookup.c
+++ b/sys/kern/vfs_lookup.c
@@ -717,6 +717,11 @@
 		cnp->cn_nameptr = cnp->cn_pnbuf;
 		if (*(cnp->cn_nameptr) == '/') {
 			vrele(dp);
+			/* Reset the lookup to start from the real root. */
+			if (__predict_false(ndp->ni_rootdir != pwd->pwd_rdir)) {
+				cnp->cn_flags |= ISRESTARTED;
+				ndp->ni_rootdir = pwd->pwd_rdir;
+			}
 			error = namei_handle_root(ndp, &dp);
 			if (error != 0)
 				goto out;