From 3cae233d69f79eddaa99c38305fe33977e3a706b Mon Sep 17 00:00:00 2001
From: David Anderson <danderson@tailscale.com>
Date: Tue, 16 Nov 2021 11:27:44 -0800
Subject: [PATCH] device: fix nil pointer dereference in uapi read

Signed-off-by: David Anderson <danderson@tailscale.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 device/uapi.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/device/uapi.go b/device/uapi.go
index e33355d..87c5dd9 100644
--- a/device/uapi.go
+++ b/device/uapi.go
@@ -258,11 +258,11 @@ type ipcSetPeer struct {
 }
 
 func (peer *ipcSetPeer) handlePostConfig() {
-	if peer.Peer == nil {
+	if peer.Peer == nil || peer.dummy {
 		return
 	}
 	peer.disableRoaming = peer.device.net.brokenRoaming && peer.endpoint != nil
-	if !peer.dummy && peer.device.isUp() {
+	if peer.device.isUp() {
 		peer.Start()
 		if peer.pkaOn {
 			peer.SendKeepalive()