From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu, 25 May 2017 22:26:17 +0000 (+0200)
Subject: staging: vchiq_2835_arm: Handle vmalloc_to_page error case
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=025f69ade93952e9415ea5c5f48d729b03e04dfc;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

staging: vchiq_2835_arm: Handle vmalloc_to_page error case

In case vmalloc_to_page returns NULL create_pagelist must abort
imediatly.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index 8911e86a2cce..eeeee1bf68b7 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -459,6 +459,11 @@ create_pagelist(char __user *buf, size_t count, unsigned short type,
 								 PAGE_SIZE));
 			size_t bytes = PAGE_SIZE - off;
 
+			if (!pg) {
+				cleanup_pagelistinfo(pagelistinfo);
+				return NULL;
+			}
+
 			if (bytes > length)
 				bytes = length;
 			pages[actual_pages] = pg;