| From | Luis Henriques <> | Subject | [PATCH 3.16.y-ckt 051/133] arm64: kconfig: Move LIST_POISON to a safe value | Date | Wed, 30 Sep 2015 10:49:59 +0100 |
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3.16.7-ckt18 -stable review patch. If anyone has any objections, please let me know.
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From: Jeff Vander Stoep <jeffv@google.com>
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@arm.com> Signed-off-by: Thierry Strudel <tstrudel@google.com> Signed-off-by: Jeff Vander Stoep <jeffv@google.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- arch/arm64/Kconfig | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 839f48c26ef0..316ed8cf5bc0 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -81,6 +81,10 @@ config NO_IOPORT_MAP config STACKTRACE_SUPPORT def_bool y +config ILLEGAL_POINTER_VALUE + hex + default 0xdead000000000000 + config LOCKDEP_SUPPORT def_bool y
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