[PATCH v7 5/5] x86/boot/compressed: Warn on orphan section placement

Kees Cook keescook at chromium.org
Tue Sep 1 22:53:47 EDT 2020

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

Now that all sections are explicitly handled, enable orphan section

Signed-off-by: Kees Cook <keescook at chromium.org>
 arch/x86/boot/compressed/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 5b7f6e175b03..871cc071c925 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -54,6 +54,7 @@ KBUILD_LDFLAGS += $(call ld-option,--no-ld-generated-unwind-info)
 # Compressed kernel should be built as PIE since it may be loaded at any
 # address by the bootloader.
 LDFLAGS_vmlinux := -pie $(call ld-option, --no-dynamic-linker)
+LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn)
 LDFLAGS_vmlinux += -T
 hostprogs	:= mkpiggy

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