efi_call() is a callable non-leaf function which doesn't honor CONFIG_FRAME_POINTER, which can result in bad stack traces. Create a stack frame for it when CONFIG_FRAME_POINTER is enabled. Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Reviewed-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> --- arch/x86/platform/efi/efi_stub_64.S | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S index 32020cb..92723ae 100644 --- a/arch/x86/platform/efi/efi_stub_64.S +++ b/arch/x86/platform/efi/efi_stub_64.S @@ -11,6 +11,7 @@ #include <asm/msr.h> #include <asm/processor-flags.h> #include <asm/page_types.h> +#include <asm/frame.h> #define SAVE_XMM \ mov %rsp, %rax; \ @@ -39,6 +40,7 @@ mov (%rsp), %rsp ENTRY(efi_call) + FRAME_BEGIN SAVE_XMM mov (%rsp), %rax mov 8(%rax), %rax @@ -51,5 +53,6 @@ ENTRY(efi_call) call *%rdi addq $48, %rsp RESTORE_XMM + FRAME_END ret ENDPROC(efi_call) -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
