Unverified Commit 617955ca authored by Alexandre Ghiti's avatar Alexandre Ghiti Committed by Palmer Dabbelt
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riscv: Fix EFI stub usage of KASAN instrumented strcmp function 



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: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
Reviewed-by: default avatarAtish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20230203075232.274282-5-alexghiti@rivosinc.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent 401e8448

arch/riscv/kernel/image-vars.h

+0 −2
Original line number Diff line number Diff line
@@ -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;