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Subject[RFC v5 50/57] arm64: kernel: Add exception on kuser32 to prevent stack analysis
Date
From: Raphael Gault <raphael.gault@arm.com>

kuser32 being used for compatibility, it contains a32 instructions
which are not recognised by objtool when trying to analyse arm64
object files. Thus, we add an exception to skip validation on this
particular file.

Signed-off-by: Raphael Gault <raphael.gault@arm.com>
Signed-off-by: Julien Thierry <jthierry@redhat.com>
---
arch/arm64/kernel/Makefile | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index fc6488660f64..f5994679db5f 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -33,6 +33,9 @@ ifneq ($(CONFIG_COMPAT_VDSO), y)
obj-$(CONFIG_COMPAT) += sigreturn32.o
endif
obj-$(CONFIG_KUSER_HELPERS) += kuser32.o
+
+OBJECT_FILES_NON_STANDARD_kuser32.o := y
+
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o
--
2.21.0
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