Re: [PATCH] sh: Fix build with CONFIG_UBSAN=y

Hi Kees,

On Tue, 2024-01-30 at 15:27 -0800, Kees Cook wrote:
> The early boot stub for sh had UBSan instrumentation present where it is
> not supported. Disable it for this part of the build.
> 
>   sh4-linux-ld: arch/sh/boot/compressed/misc.o: in function `zlib_inflate_table':
>   misc.c:(.text+0x670): undefined reference to `__ubsan_handle_shift_out_of_bounds'
> 
> Reported-by: kernel test robot <[email protected]>
> Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
> Cc: Yoshinori Sato <[email protected]>
> Cc: Rich Felker <[email protected]>
> Cc: John Paul Adrian Glaubitz <[email protected]>
> Cc: Masahiro Yamada <[email protected]>
> Cc: Nicolas Schier <[email protected]>
> Cc: [email protected]
> Signed-off-by: Kees Cook <[email protected]>
> ---
>  arch/sh/boot/compressed/Makefile | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile
> index b5e29f99c02c..6c6c791a1d06 100644
> --- a/arch/sh/boot/compressed/Makefile
> +++ b/arch/sh/boot/compressed/Makefile
> @@ -12,6 +12,7 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
>             vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo $(OBJECTS)
>  
>  GCOV_PROFILE := n
> +UBSAN_SANITIZE := n
>  
>  #
>  # IMAGE_OFFSET is the load offset of the compression loader

Thanks for the patch. I'm looking into this now and will provide the review later.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913