The following commit has been merged into the core/build branch of tip: Commit-ID: b3e5d80d0c48c0cc7bce56473672f4e6e1210910 Gitweb: https://git.kernel.org/tip/b3e5d80d0c48c0cc7bce56473672f4e6e1210910 Author: Kees Cook <keescook@xxxxxxxxxxxx> AuthorDate: Tue, 01 Sep 2020 19:53:43 -07:00 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Thu, 03 Sep 2020 10:28:35 +02:00 arm64/build: Warn on orphan section placement We don't want to depend on the linker's orphan section placement heuristics as these can vary between linkers, and may change between versions. All sections need to be explicitly handled in the linker script. With all sections now handled, enable orphan section warnings. Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Acked-by: Will Deacon <will@xxxxxxxxxx> Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Link: https://lore.kernel.org/r/20200902025347.2504702-2-keescook@xxxxxxxxxxxx --- arch/arm64/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 6de7f55..081144f 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -29,6 +29,10 @@ LDFLAGS_vmlinux += --fix-cortex-a53-843419 endif endif +# We never want expected sections to be placed heuristically by the +# linker. All sections should be explicitly named in the linker script. +LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn) + ifeq ($(CONFIG_ARM64_USE_LSE_ATOMICS), y) ifneq ($(CONFIG_ARM64_LSE_ATOMICS), y) $(warning LSE atomics not supported by binutils)
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