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FROMLIST: arm64: vdso: disable Shadow Call Stack

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Shadow stacks are only available in the kernel, so disable SCS
instrumentation for the vDSO.

Bug: 145210207
Change-Id: Id894b77112801c00a44bcc539cc3882b5f72b251
(am from https://lore.kernel.org/patchwork/patch/1149061/)
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen 2018-05-02 11:05:53 -07:00
commit 1cb25645a4
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kernel/vdso/Makefile
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@ -25,7 +25,7 @@ ccflags-y += -DDISABLE_BRANCH_PROFILING
VDSO_LDFLAGS := -Bsymbolic
CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os
CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS)
KBUILD_CFLAGS += $(DISABLE_LTO)
KASAN_SANITIZE := n
UBSAN_SANITIZE := n