linux-kernel - Re: [RFC PATCH net-next 5/5] selftests/bpf: change test

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Date:   Thu, 8 Jun 2017 16:27:47 +0100
From:   Edward Cree <ecree@...arflare.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
CC:     <davem@...emloft.net>, Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        <netdev@...r.kernel.org>,
        iovisor-dev <iovisor-dev@...ts.iovisor.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH net-next 5/5] selftests/bpf: change test_verifier
 expectations

On 08/06/17 03:43, Alexei Starovoitov wrote:
> On Wed, Jun 07, 2017 at 04:00:02PM +0100, Edward Cree wrote:
>> Some of the verifier's error messages have changed, and some constructs
>>  that previously couldn't be verified are now accepted.
>>
>> Signed-off-by: Edward Cree <ecree@...arflare.com>
>> ---
>>  tools/testing/selftests/bpf/test_verifier.c | 226 ++++++++++++++--------------
>>  1 file changed, 116 insertions(+), 110 deletions(-)
> imo this rewrite needs more than one additional test.
> Like i counted at least 2 new verifier features (like negative and ptr & 0x40)
> All the new logic needs to be covered by tests.
Yes, I will write some new tests to cover the new features.  I just wanted
 to get some comments on the patch first, in case I was barking up entirely
 the wrong tree.

-Ed