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authorJeff Vander Stoep <jeffv@google.com>2015-08-18 20:50:10 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-09-29 19:25:58 +0200
commit1bcc586eae97f5dfb9249c2d8c9406f0f8da57ae (patch)
tree7b4be602b02fd4ed8e3889d7f790bab30dd9bd77 /arch
parent2a6f41747737303b2241f0e30c6960a30102ac26 (diff)
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@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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7796af4b1d6f..99fe93a5021f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -101,6 +101,10 @@ config NO_IOPORT_MAP
config STACKTRACE_SUPPORT
def_bool y
+config ILLEGAL_POINTER_VALUE
+ hex
+ default 0xdead000000000000
+
config LOCKDEP_SUPPORT
def_bool y