Re: [PATCH] mm: export copy_to_kernel_nofault

[Andrey Konovalov]

On Fri, Oct 18, 2024 at 5:11 PM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
>
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> This symbol is now used on the kasan test module, so it needs to be
> exported.
>
> ERROR: modpost: "copy_to_kernel_nofault" [mm/kasan/kasan_test.ko] undefined!
>
> Fixes: 44749130ffb4 ("kasan: migrate copy_user_test to kunit")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  mm/maccess.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/mm/maccess.c b/mm/maccess.c
> index 3ca55ec63a6a..8f0906180a94 100644
> --- a/mm/maccess.c
> +++ b/mm/maccess.c
> @@ -82,6 +82,7 @@ long copy_to_kernel_nofault(void *dst, const void *src, size_t size)
>         pagefault_enable();
>         return -EFAULT;
>  }
> +EXPORT_SYMBOL_GPL(copy_to_kernel_nofault);
>
>  long strncpy_from_kernel_nofault(char *dst, const void *unsafe_addr, long count)
>  {
> --
> 2.39.5
>

Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>

Thank you!