Index: head/sys/kern/kern_exec.c
===================================================================
--- head/sys/kern/kern_exec.c
+++ head/sys/kern/kern_exec.c
@@ -648,8 +648,8 @@
 		free(imgp->freepath, M_TEMP);
 		imgp->freepath = NULL;
 		/* set new name to that of the interpreter */
-		NDINIT(&nd, LOOKUP, ISOPEN | LOCKLEAF | FOLLOW | SAVENAME,
-		    UIO_SYSSPACE, imgp->interpreter_name, td);
+		NDINIT(&nd, LOOKUP, ISOPEN | LOCKLEAF | LOCKSHARED | FOLLOW |
+		    SAVENAME, UIO_SYSSPACE, imgp->interpreter_name, td);
 		args->fname = imgp->interpreter_name;
 		goto interpret;
 	}