Re: TCP stops sending packets over loopback on 4.10-rc3?

On Wed, 2017-01-25 at 09:26 -0500, Josef Bacik wrote:

Nope ftrace isn't broken, I'm just dumb, the space is being reclaimed 
by sk_wmem_free_skb().  So I guess I need to figure out why I stop 
getting ACK's from the other side of the loopback.  Thanks,

ss -temoi dst 127.0.0.1

Might give you some hints, like packets being dropped.

ACK can be delayed if the reader is slow to consume bytes.