[LTP] [PATCH] mlock_8-1, munlock_10-1: don't use LONG_MAX as invalid pointer

[Petr Vorel]

Hi Jan,

> > > arm64 kernel with commit 057d3389108e ("mm: untag user pointers passed to
> > > memory syscalls") will assume this is tagged user pointer and will
> > > attempt to clear first byte. This leads to test hitting different error
> > > (EINVAL instead of ENOMEM).

> > > Add a helper function which provides invalid/unused pointer from user
> > > address space.

> > > Signed-off-by: Jan Stancek <jstancek@redhat.com>
> > Reviewed-by: Petr Vorel <pvorel@suse.cz>

> Thanks, discussion in:
>   http://lists.linux.it/pipermail/ltp/2019-October/013993.html
> is still going, so maybe this will be fixed on kernel side
> after all.

Thanks for info, I didn't notice this is related to your patch.

Kind regards,
Petr