Hi Michal, On Thu, Sep 21, 2017 at 09:34:20AM +0200, Michal Kubecek wrote: > I will have to check but IIRC it might be possible to use zero length > for the peek to only check the length which could help you to avoid both > the reallocation and copying the same data from kernel to userspace > twice.
Yes, msg with zero buf length also works. I will post a new patch after fix. Thanks Hangbin
