From 025f69ade93952e9415ea5c5f48d729b03e04dfc Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri, 26 May 2017 00:26:17 +0200
Subject: [PATCH] staging: vchiq_2835_arm: Handle vmalloc_to_page error case
Git-commit: 025f69ade93952e9415ea5c5f48d729b03e04dfc
Patch-mainline: v4.13-rc1
References: FATE#324827
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c | 5 +++++
1 file changed, 5 insertions(+)
--- 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
PAGE_SIZE));
size_t bytes = PAGE_SIZE - off;
+ if (!pg) {
+ cleanup_pagelistinfo(pagelistinfo);
+ return NULL;
+ }
+
if (bytes > length)
bytes = length;
pages[actual_pages] = pg;