Hi,
On Sat, Dec 11, 2010 at 12:18:57AM +0100, mat wrote:
> Le Wed, 8 Dec 2010 14:19:51 -0800,
> Kees Cook <kees.cook@xxxxxxxxxxxxx> a écrit :
>
> > 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?
> I think it is not need anymore with Steven Rostedt patch [1]
>
> Matthieu
>
> [1]
> > > Here we set the text read only before we call the notifiers. The
> > > function tracer changes the calls to mcount into nops via a notifier
> > > call so this must be done after the module notifiers.
Which patch was that? (Or, rather, what's a good url to see it?)
-Kees
--
Kees Cook
Ubuntu Security Team
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