Commit bf0c4e04 authored Aug 18, 2015 by Jeff Vander Stoep Committed by Will Deacon Aug 19, 2015

arm64: kconfig: Move LIST_POISON to a safe value



Move the poison pointer offset to 0xdead000000000000, a
recognized value that is not mappable by user-space exploits.

Cc: <stable@vger.kernel.org>
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>

parent 9a5ad7d0

arch/arm64/Kconfig

+4 −0

Original line number	Diff line number	Diff line
		@@ -106,6 +106,10 @@ config NO_IOPORT_MAP
		config STACKTRACE_SUPPORT
		def_bool y

		config ILLEGAL_POINTER_VALUE
		hex
		default 0xdead000000000000

		config LOCKDEP_SUPPORT
		def_bool y