Re: [PATCH 2/2] kasan: apply store-only mode in kasan kunit testcases

[Andrey Konovalov]

On Tue, Aug 12, 2025 at 11:28 PM Yeoreum Yun <yeoreum.yun@xxxxxxx> wrote:
>
> > > But in case of sync, when the MTE fault happens, it doesn't
> > > write to memory so, I think it's fine.
> >
> > Does it not? I thought MTE gets disabled and we return from the fault
> > handler and let the write instruction execute. But my memory on this
> > is foggy. And I don't have a setup right now to test.
>
> Right. when fault is hit the MTE gets disabled.
> But in kasan_test_c.c -- See the KUNIT_EXPECT_KASAN_FAIL,
> It re-enables for next test by calling kasan_enable_hw_tags().

But before that, does the faulting instruction get executed? After MTE
gets disabled in the fault handler.