Re: [PATCH AUTOSEL 6.3 5/7] riscv: Unconditionnally select KASAN_VMALLOC if KASAN

Alexandre Ghiti
2023-05-12T09:51:18Z

Hi Sasha,

On 5/9/23 05:54, Sasha Levin wrote:
> From: Alexandre Ghiti <alexghiti@rivosinc.com>
>
> [ Upstream commit 864046c512c2cd8418dc928b91981fb12a80396c ]
>
> If KASAN is enabled, VMAP_STACK depends on KASAN_VMALLOC so enable
> KASAN_VMALLOC with KASAN so that we can enable VMAP_STACK by default.
>
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
> Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
> Link: https://lore.kernel.org/r/20230203075232.274282-7-alexghiti@rivosinc.com
> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
> arch/riscv/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index eb7f29a412f87..d6aad84efb95e 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -118,6 +118,7 @@ config RISCV
> select HAVE_SYSCALL_TRACEPOINTS
> select IRQ_DOMAIN
> select IRQ_FORCED_THREADING
> + select KASAN_VMALLOC if KASAN
> select MODULES_USE_ELF_RELA if MODULES
> select MODULE_SECTIONS if MODULES
> select OF

KASAN_VMALLOC is broken for any kernel < 6.4, so this one should not be
backported to any kernel (5.15, 6.1, 6.2, 6.3).

Thanks,

Alex