Don't double vput and panic after looking up "."

diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c
index ec5d7a8..768a567 100644 (file)
--- a/sys/kern/vfs_syscalls.c
+++ b/sys/kern/vfs_syscalls.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vfs_syscalls.c,v 1.295 2018/07/22 06:31:17 anton Exp $        */
+/*     $OpenBSD: vfs_syscalls.c,v 1.296 2018/07/27 01:44:19 beck Exp $ */
 /*     $NetBSD: vfs_syscalls.c,v 1.71 1996/04/23 10:29:02 mycroft Exp $        */
 
 /*
@@ -945,7 +945,7 @@ sys_unveil(struct proc *p, void *v, register_t *retval)
        /* release vref and lock from namei, but not vref from ppath_add */
        if (nd.ni_vp)
                vput(nd.ni_vp);
-       if (nd.ni_dvp)
+       if (nd.ni_dvp && nd.ni_dvp != nd.ni_vp)
                vput(nd.ni_dvp);
        return (error);
 }