Re: WARNING in apparmor_secid_to_secctx

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On Thu, Sep 6, 2018 at 1:19 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
> On Thu, Sep 6, 2018 at 12:59 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
>> On Wed, Sep 5, 2018 at 7:37 PM, Casey Schaufler <casey@xxxxxxxxxxxxxxxx> wrote:
>>> On 9/5/2018 4:08 AM, Dmitry Vyukov wrote:
>>>> Thanks! I've re-enabled selinux on syzbot:
>>>> https://github.com/google/syzkaller/commit/196410e4f5665d4d2bf6c818d06f1c8d03cfa8cc
>>>> Now we will have instances with apparmor and with selinux.
>>>
>>> Any chance we could get a Smack instance as well?
>>
>> Hi Casey,
>>
>> Sure!
>> Provided you want to fix bugs ;)
>> I've setup an instance with smack enabled:
>> https://github.com/google/syzkaller/commit/0bb7a7eb8e0958c6fbe2d69615b9fae4af88c8ee
>
>
> But just doing default things does not seem to find much. I guess
> common paths through the hooks are well exercised already.
> So perhaps if we do more non-trivial things, it can find more stuff.
> But what are they? Adding/changing/removing xattr's? Which? What are
> the values? Changing security contexts? How? What else?
> selinux has own filesystem and we should touch some files there:
> https://github.com/google/syzkaller/blob/master/sys/linux/selinux.txt
> But we don't anything similar for other modules.


First one that looks smack-specific:
https://syzkaller.appspot.com/bug?id=9eda6092f146cb23cb9109f675a2e2cb743ee48b
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