Re: [PATCH 2/3] tools/objtool: add kasan_check_* to uaccess whitelist

[Marco Elver]

On Wed, 29 May 2019 at 10:55, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
>
> On Tue, May 28, 2019 at 7:19 PM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> >
> > On Tue, May 28, 2019 at 06:32:57PM +0200, Marco Elver wrote:
> > > This is a pre-requisite for enabling bitops instrumentation. Some bitops
> > > may safely be used with instrumentation in uaccess regions.
> > >
> > > For example, on x86, `test_bit` is used to test a CPU-feature in a
> > > uaccess region:   arch/x86/ia32/ia32_signal.c:361
> >
> > That one can easily be moved out of the uaccess region. Any else?
>
> Marco, try to update config with "make allyesconfig" and then build
> the kernel without this change.
>

Done. The only instance of the uaccess warning is still in
arch/x86/ia32/ia32_signal.c.

Change the patch to move this access instead? Let me know what you prefer.

Thanks,
-- Marco