Set HAVE_STACK_VALIDATION to enable stack metadata validation for x86_64. Also, disable stacktool checking for the kexec purgatory code, because:
1. It's built by the archprepare target, which can run before stacktool has been built yet. 2. It runs outside the scope of the kernel's normal mode of operation and doesn't need stack checking anyway. Signed-off-by: Josh Poimboeuf <[email protected]> --- arch/x86/Kconfig | 1 + arch/x86/purgatory/Makefile | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 41b74e2..a7e4959 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -154,6 +154,7 @@ config X86 select VIRT_TO_BUS select X86_DEV_DMA_OPS if X86_64 select X86_FEATURE_NAMES if PROC_FS + select HAVE_STACK_VALIDATION if X86_64 config INSTRUCTION_DECODER def_bool y diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 2c835e3..30d7d58 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -1,3 +1,5 @@ +STACKTOOL := n + purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o targets += $(purgatory-y) -- 2.4.3
