On Fri, Nov 26, 2010 at 06:23:55PM +0100, mat wrote:
> could you try the attached patch ?
>
> on module load, we sort the __jump_table section. So we should make it
> writable.
>
>
> Matthieu
> diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h
> index f52d42e..574dbc2 100644
> --- a/arch/x86/include/asm/jump_label.h
> +++ b/arch/x86/include/asm/jump_label.h
> @@ -14,7 +14,7 @@
> do { \
> asm goto("1:" \
> JUMP_LABEL_INITIAL_NOP \
> - ".pushsection __jump_table, \"a\" \n\t"\
> + ".pushsection __jump_table, \"aw\" \n\t"\
> _ASM_PTR "1b, %l[" #label "], %c0 \n\t" \
> ".popsection \n\t" \
> : : "i" (key) : : label); \
Acked-by: Kees Cook <kees.cook@xxxxxxxxxxxxx>
Can this please get committed to tip?
Thanks,
-Kees
--
Kees Cook
Ubuntu Security Team
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