4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Ard Biesheuvel <ard.biesheu...@linaro.org> commit 0426a4e68f18d75515414361de9e3e1445d2644e upstream. To prevent the compiler from emitting absolute references to the section markers when running in PIC mode, override the visibility to 'hidden' for all contents of asm/sections.h Tested-by: Matthias Kaehlcke <m...@chromium.org> Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Matt Fleming <m...@codeblueprint.co.uk> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20170818194947.19347-4-ard.biesheu...@linaro.org Signed-off-by: Ingo Molnar <mi...@kernel.org> [nc: Fix conflict due to lack of commit 42b55734030c1 in linux-4.4.y] Signed-off-by: Nathan Chancellor <natechancel...@gmail.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/firmware/efi/libstub/arm64-stub.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) --- a/drivers/firmware/efi/libstub/arm64-stub.c +++ b/drivers/firmware/efi/libstub/arm64-stub.c @@ -9,9 +9,17 @@ * published by the Free Software Foundation. * */ + +/* + * To prevent the compiler from emitting GOT-indirected (and thus absolute) + * references to the section markers, override their visibility as 'hidden' + */ +#pragma GCC visibility push(hidden) +#include <asm/sections.h> +#pragma GCC visibility pop + #include <linux/efi.h> #include <asm/efi.h> -#include <asm/sections.h> efi_status_t __init handle_kernel_image(efi_system_table_t *sys_table_arg, unsigned long *image_addr,
