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(parent: 8928c5b) | patch
staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist
authorStefan Wahren <stefan.wahren@i2se.com>
Sun, 3 Sep 2017 17:06:31 +0000 (19:06 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 12 Oct 2017 09:51:19 +0000 (11:51 +0200)
commit8a056a1152707567ecfe6a6f26b8414606150936
tree8a07daeee3e5740d832c26f42f56a127b34ae090tree | snapshot
parent8928c5b2d318cd591d499c94ed4dd5c920f5016fcommit | diff
staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist

commit 974d4d03fc020af4fa4e9e72a86f0fefa37803c5 upstream.

This fixes a NULL pointer dereference on RPi 2 with multi_v7_defconfig.
The function page_address() could return NULL with enabled CONFIG_HIGHMEM.
So fix this by using kmap() instead.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 71bad7f08641 ("staging: add bcm2708 vchiq driver")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c diff | blob | history
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