On Wed, Feb 22, 2023 at 05:00:37PM +1100, Michael Ellerman wrote:
> When KASAN/KCSAN are enabled clang generates .text.asan/tsan sections.
> Because they are not mentioned in the linker script warnings are
> generated, and when orphan handling is set to error that becomes a build
> error, eg:
>
> ld.lld: error: vmlinux.a(init/main.o):(.text.tsan.module_ctor) is
> being placed in '.text.tsan.module_ctor' ld.lld: error:
> vmlinux.a(init/version.o):(.text.tsan.module_ctor) is being placed in
> '.text.tsan.module_ctor'
>
> Fix it by adding the sections to our linker script, similar to the
> generic change made in 848378812e40 ("vmlinux.lds.h: Handle clang's
> module.{c,d}tor sections").
>
> Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
Indeed, I had not thought about architectures not using the TEXT_TEXT
macro.
Reviewed-by: Nathan Chancellor <nat...@kernel.org>
> ---
> arch/powerpc/kernel/vmlinux.lds.S | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/powerpc/kernel/vmlinux.lds.S
> b/arch/powerpc/kernel/vmlinux.lds.S
> index 958e77a24f85..7a2209767adf 100644
> --- a/arch/powerpc/kernel/vmlinux.lds.S
> +++ b/arch/powerpc/kernel/vmlinux.lds.S
> @@ -125,6 +125,7 @@ SECTIONS
> * included with the main text sections, so put it by itself.
> */
> *(.sfpr);
> + *(.text.asan.* .text.tsan.*)
> MEM_KEEP(init.text)
> MEM_KEEP(exit.text)
> } :text
> --
> 2.39.1
>
