Re: [PATCH RESEND v3 2/3] kasan: migrate copy_user_test to kunit

[Andrey Konovalov]

On Tue, Oct 15, 2024 at 1:10 AM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Mon, 14 Oct 2024 07:57:00 +0500 Sabyrzhan Tasbolatov <snovitoll@xxxxxxxxx> wrote:
>
> > Migrate the copy_user_test to the KUnit framework to verify out-of-bound
> > detection via KASAN reports in copy_from_user(), copy_to_user() and
> > their static functions.
> >
> > This is the last migrated test in kasan_test_module.c, therefore delete
> > the file.
> >
>
> x86_64 allmodconfig produces:
>
> vmlinux.o: warning: objtool: strncpy_from_user+0x8a: call to __check_object_size() with UACCESS enabled

Too bad. I guess we have to duplicate both kasan_check_write and
check_object_size before both do_strncpy_from_user calls in
strncpy_from_user.