Re: [PATCH 4/6] riscv: Fix EFI stub usage of KASAN instrumented string functions

Heiko Stübner
2023-01-04T15:40:15Z

Am Freitag, 16. Dezember 2022, 17:21:39 CET schrieb Alexandre Ghiti:
> 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 generic string functions by copying stub dependencies from
> lib/string.c to drivers/firmware/efi/libstub/string.c as RISC-V does
> not implement architecture-specific versions of those functions.
>
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>

I think a similar change already went into 6.2-rc1 [0],
though it seems to leave strcmp in place in image-vars.h

[0] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=da8dd0c75b3f82eb366eb1745fb473ea92c8c087