linux-kernel - Re: [PATCH v3 0/2] usercopy: Convert test_user

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Date: Wed, 12 Jun 2024 22:03:56 -0700
From: Kees Cook <kees@...nel.org>
To: David Gow <davidgow@...gle.com>
Cc: Mark Rutland <mark.rutland@....com>,
	Vitor Massaru Iha <vitor@...saru.org>,
	Ivan Orlov <ivan.orlov0322@...il.com>,
	Brendan Higgins <brendan.higgins@...ux.dev>,
	Rae Moar <rmoar@...gle.com>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
	kunit-dev@...glegroups.com, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v3 0/2] usercopy: Convert test_user_copy to KUnit test

On Thu, Jun 13, 2024 at 12:41:43PM +0800, David Gow wrote:
> On Thu, 13 Jun 2024 at 03:59, Kees Cook <kees@...nel.org> wrote:
> >
> > Hi,
> >
> > This builds on the proposal[1] from Mark and lets me convert the
> > existing usercopy selftest to KUnit. Besides adding this basic test to
> > the KUnit collection, it also opens the door for execve testing (which
> > depends on having a functional current->mm), and should provide the
> > basic infrastructure for adding Mark's much more complete usercopy tests.
> >
> >  v3:
> >   - use MEMEQ KUnit helper (David)
> >   - exclude pathological address confusion test for systems with separate
> >     address spaces, noticed by David
> >   - add KUnit-conditional exports for alloc_mm() and arch_pick_mmap_layout()
> >     noticed by 0day
> >  v2: https://lore.kernel.org/lkml/20240610213055.it.075-kees@kernel.org/
> >  v1: https://lore.kernel.org/lkml/20240519190422.work.715-kees@kernel.org/
> >
> > -Kees
> >
> > [1] https://lore.kernel.org/lkml/20230321122514.1743889-2-mark.rutland@arm.com/
> 
> Thanks! This looks good to me (and passes everything here). Unless
> there's a compelling reason not to, I think we can take this via the
> KUnit tree.

That would be lovely, thank you! :)

-- 
Kees Cook