On 11/6/17 5:56 AM, Vasily Averin wrote:
> On 2017-11-05 15:48, David Miller wrote:
>> From: Vasily Averin <v...@virtuozzo.com>
>>> I doubt that pointer to freed net have value for someone except
>>> developers, on the other hand it helps to speed up the problem
>>> investigation.
>>
>> Any kernel pointer printed has value to attackers.
>
> David, could you please advise how to identify net namespace in kernel
> messages?
>
> In OpenVz we got many requests from host admins, they need to understand
> which container triggered the message. In such cases we have added our custom
> Container Id, but mainline lacks it.
>
> I expected that mainline can use net pointer for such purposes,
> nfsd does it for example:
>
> NFSD: starting 90-second grace period (net 880e307fe240)
>
> Now you recommend do not use net pointer.
> However could you please advise some alternative?
>
Perf now exports the device and inode. see perf_ns_link_info and its use.
