From 0b3e336601b82c6afa0e9cf21db9cb8793e25399 Mon Sep 17 00:00:00 2001 From: Laura Abbott Date: Fri, 20 Jul 2018 14:41:54 -0700 Subject: arm64: Add support for STACKLEAK gcc plugin This adds support for the STACKLEAK gcc plugin to arm64 by implementing stackleak_check_alloca(), based heavily on the x86 version, and adding the two helpers used by the stackleak common code: current_top_of_stack() and on_thread_stack(). The stack erasure calls are made at syscall returns. Additionally, this disables the plugin in hypervisor and EFI stub code, which are out of scope for the protection. Acked-by: Alexander Popov Reviewed-by: Mark Rutland Reviewed-by: Kees Cook Signed-off-by: Laura Abbott Signed-off-by: Will Deacon --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm64/Kconfig') diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 27fd50e86dfe..1494d5cfd681 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -108,6 +108,7 @@ config ARM64 select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT select HAVE_ARCH_SECCOMP_FILTER + select HAVE_ARCH_STACKLEAK select HAVE_ARCH_THREAD_STRUCT_WHITELIST select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE -- cgit v1.2.3-59-g8ed1b