[3.19.y-ckt stable] Patch "arm64: kconfig: Move LIST_POISON to a safe value" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Mon Oct 19 22:39:30 UTC 2015
This is a note to let you know that I have just added a patch titled
arm64: kconfig: Move LIST_POISON to a safe value
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt8.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From 9d154612cd942e2bf1695aab67e37e1cd580a562 Mon Sep 17 00:00:00 2001
From: Jeff Vander Stoep <jeffv at google.com>
Date: Tue, 18 Aug 2015 20:50:10 +0100
Subject: arm64: kconfig: Move LIST_POISON to a safe value
commit bf0c4e04732479f650ff59d1ee82de761c0071f0 upstream.
Move the poison pointer offset to 0xdead000000000000, a
recognized value that is not mappable by user-space exploits.
Acked-by: Catalin Marinas <catalin.marinas at arm.com>
Signed-off-by: Thierry Strudel <tstrudel at google.com>
Signed-off-by: Jeff Vander Stoep <jeffv at google.com>
Signed-off-by: Will Deacon <will.deacon at arm.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
arch/arm64/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 840c232..5fee0bd 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -97,6 +97,10 @@ config NO_IOPORT_MAP
config STACKTRACE_SUPPORT
def_bool y
+config ILLEGAL_POINTER_VALUE
+ hex
+ default 0xdead000000000000
+
config LOCKDEP_SUPPORT
def_bool y
--
1.9.1
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