[PATCH v4 4/6] riscv: Fix EFI stub usage of KASAN instrumented strcmp function

Alexandre Ghiti
2023-02-03T07:57:35Z

The EFI stub must not use any KASAN instrumented code as the kernel
proper did not initialize the thread pointer and the mapping for the
KASAN shadow region.

Avoid using the generic strcmp function, instead use the one in
drivers/firmware/efi/libstub/string.c.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/riscv/kernel/image-vars.h | 2 --
1 file changed, 2 deletions(-)

diff --git a/arch/riscv/kernel/image-vars.h b/arch/riscv/kernel/image-vars.h
index 7e2962ef73f9..15616155008c 100644
--- a/arch/riscv/kernel/image-vars.h
+++ b/arch/riscv/kernel/image-vars.h
@@ -23,8 +23,6 @@
* linked at. The routines below are all implemented in assembler in a
* position independent manner
*/
-__efistub_strcmp = strcmp;
-
__efistub__start = _start;
__efistub__start_kernel = _start_kernel;
__efistub__end = _end;
--
2.37.2