double check that head & body in register cb are always buffer
double check that head & body in register cb are always buffer

hustxiaoc/tchannel,chenwenbin928/tchannel,Zirpon/tchannel,sasa233/tchannel,savaki/tchannel,benfleis/tchannel,benfleis/tchannel,hustxiaoc/tchannel,i/tchannel,chenwenbin928/tchannel,bunnyblue/tchannel,vanloswang/tchannel,hustxiaoc/tchannel,savaki/tchannel,RyanTech/tchannel,bunnyblue/tchannel,bunnyblue/tchannel,Zirpon/tchannel,sasa233/tchannel,davewhat/tchannel,Zirpon/tchannel,i/tchannel,sasa233/tchannel,vanloswang/tchannel,savaki/tchannel,vanloswang/tchannel,RyanTech/tchannel,davewhat/tchannel,chenwenbin928/tchannel,i/tchannel,RyanTech/tchannel,benfleis/tchannel