From: Kees Cook Date: Wed, 2 Sep 2020 02:53:45 +0000 (-0700) Subject: arm/boot: Warn on orphan section placement X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4409d2f8dfe7d5088567d4ba00133f876ee586c7;p=linux.git 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 Signed-off-by: Ingo Molnar Reviewed-by: Nick Desaulniers Link: https://lore.kernel.org/r/20200902025347.2504702-4-keescook@chromium.org --- diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index b1147b7f2c8d3..58028abd05d95 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -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