Re: [PATCH v2 2/4] net: i825xx: Use absolute_pointer for memcpy from fixed memory location

[Geert Uytterhoeven]

On Wed, Sep 15, 2021 at 5:52 AM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> gcc 11.x reports the following compiler warning/error.
>
> drivers/net/ethernet/i825xx/82596.c: In function 'i82596_probe':
>     ./arch/m68k/include/asm/string.h:72:25: error:
>             '__builtin_memcpy' reading 6 bytes from a region of size 0
>                     [-Werror=stringop-overread]
>
> Use absolute_pointer() to work around the problem.
>
> Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds