linux-kernel - Re: [PATCH] lib: fix build failure in CONFIG_DEBUG

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Date:   Mon, 10 Dec 2018 09:46:37 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Colin King <colin.king@...onical.com>,
        LKML <linux-kernel@...r.kernel.org>,
        PowerPC <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH] lib: fix build failure in CONFIG_DEBUG_VIRTUAL test

On Mon, Dec 10, 2018 at 12:08 AM Christophe Leroy
<christophe.leroy@....fr> wrote:
>
> On several arches, virt_to_phys() is in io.h
>
> Build fails without it:
>
>   CC      lib/test_debug_virtual.o
> lib/test_debug_virtual.c: In function 'test_debug_virtual_init':
> lib/test_debug_virtual.c:26:7: error: implicit declaration of function 'virt_to_phys' [-Werror=implicit-function-declaration]
>   pa = virt_to_phys(va);
>        ^
>
> Fixes: e4dace361552 ("lib: add test module for CONFIG_DEBUG_VIRTUAL")
> CC: stable@...r.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

Reviewed-by: Kees Cook <keescook@...omium.org>

-Kees

> ---
>  lib/test_debug_virtual.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/lib/test_debug_virtual.c b/lib/test_debug_virtual.c
> index d5a06addeb27..bf864c73e462 100644
> --- a/lib/test_debug_virtual.c
> +++ b/lib/test_debug_virtual.c
> @@ -5,6 +5,7 @@
>  #include <linux/vmalloc.h>
>  #include <linux/slab.h>
>  #include <linux/sizes.h>
> +#include <linux/io.h>
>
>  #include <asm/page.h>
>  #ifdef CONFIG_MIPS
> --
> 2.13.3
>


-- 
Kees Cook