diff mbox series

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

Message ID 20230203075232.274282-5-alexghiti@rivosinc.com
State Accepted
Commit 617955ca6e275c4dd0dcf5316fca7fc04a8f2fe6
Headers show
Series RISC-V kasan rework | expand

Commit Message

Alexandre Ghiti Feb. 3, 2023, 7:52 a.m. UTC 
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 mbox series

Patch

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;