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arm/boot: 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 warning.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20200902025347.2504702-4-keescook@chromium.org
This commit is contained in:
Kees Cook 2020-09-01 19:53:45 -07:00 committed by Ingo Molnar
parent 5a17850e25
commit 4409d2f8df
1 changed files with 2 additions and 0 deletions
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arch/arm/boot/compressed/Makefile
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@ -123,6 +123,8 @@ endif
LDFLAGS_vmlinux += --no-undefined
# Delete all temporary local symbols
LDFLAGS_vmlinux += -X
# Report orphan sections
LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn)
# Next argument is a linker script
LDFLAGS_vmlinux += -T