Re: [PATCH 6.1.y] riscv/efistub: Ensure GP-relative addressing is not used

Greg Kroah-Hartman
2024-02-23T16:05:50Z

On Wed, Feb 21, 2024 at 11:21:24PM +0100, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
>
> commit afb2a4fb84555ef9e61061f6ea63ed7087b295d5 upstream.
>
> The cflags for the RISC-V efistub were missing -mno-relax, thus were
> under the risk that the compiler could use GP-relative addressing. That
> happened for _edata with binutils-2.41 and kernel 6.1, causing the
> relocation to fail due to an invalid kernel_size in handle_kernel_image.
> It was not yet observed with newer versions, but that may just be luck.
>
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> drivers/firmware/efi/libstub/Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Both now queued up, thanks.

greg k-h