From 1fc5c0244b03487526fd39c15b613c5f0da71fa7 Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Wed, 16 Mar 2016 11:52:00 +0300
Subject: [PATCH] criu: pstree_switch_state -- Fix nil deref on error path

We may enter with @root_item = NULL in case of error
handling, so simply bail out.

Signed-off-by: Cyrill Gorcunov <gorcunov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
---
 criu/seize.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/criu/seize.c b/criu/seize.c
index d187b7439..06065861b 100644
--- a/criu/seize.c
+++ b/criu/seize.c
@@ -463,6 +463,9 @@ void pstree_switch_state(struct pstree_item *root_item, int st)
 {
 	struct pstree_item *item = root_item;
 
+	if (!root_item)
+		return;
+
 	if (st != TASK_DEAD)
 		freezer_restore_state();