Re: [PATCH] kasan: export kasan_poison

[Vincenzo Frascino]

On 1/25/21 11:28 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> The unit test module fails to build after adding a reference
> to kasan_poison:
> 
> ERROR: modpost: "kasan_poison" [lib/test_kasan.ko] undefined!
> 
> Export this symbol to make it available to loadable modules.
> 
> Fixes: b9b322c2bba9 ("kasan: add match-all tag tests")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Thanks I just stumbled on the same issue ;)

Reviewed-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>

> ---
>  mm/kasan/shadow.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/mm/kasan/shadow.c b/mm/kasan/shadow.c
> index de6b3f074742..32e7a5c148e6 100644
> --- a/mm/kasan/shadow.c
> +++ b/mm/kasan/shadow.c
> @@ -94,6 +94,7 @@ void kasan_poison(const void *address, size_t size, u8 value)
>  
>  	__memset(shadow_start, value, shadow_end - shadow_start);
>  }
> +EXPORT_SYMBOL_GPL(kasan_poison);
>  
>  void kasan_unpoison(const void *address, size_t size)
>  {
> 

-- 
Regards,
Vincenzo