lkml.org 
[lkml]   [2020]   [Apr]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    Subject[PATCH v11 12/12] efi/libstub: disable SCS
    From
    Shadow stacks are not available in the EFI stub, filter out SCS flags.

    Suggested-by: James Morse <james.morse@arm.com>
    Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
    Reviewed-by: Kees Cook <keescook@chromium.org>
    Acked-by: Ard Biesheuvel <ardb@kernel.org>
    ---
    drivers/firmware/efi/libstub/Makefile | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
    index 094eabdecfe6..b52ae8c29560 100644
    --- a/drivers/firmware/efi/libstub/Makefile
    +++ b/drivers/firmware/efi/libstub/Makefile
    @@ -32,6 +32,9 @@ KBUILD_CFLAGS := $(cflags-y) -DDISABLE_BRANCH_PROFILING \
    $(call cc-option,-fno-stack-protector) \
    -D__DISABLE_EXPORTS

    +# remove SCS flags from all objects in this directory
    +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS))
    +
    GCOV_PROFILE := n
    KASAN_SANITIZE := n
    UBSAN_SANITIZE := n
    --
    2.26.1.301.g55bc3eb7cb9-goog
    \
     
     \ /
      Last update: 2020-04-16 18:14    [W:4.065 / U:0.000 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site