06:04 <gmg> I am trying to run stap on fairly recent linux kernel (4.11 rc6). I have compiled latest systemtap from the git source and have used --prefix options and have installed it on my test machine. When I do this...

06:04 <gmg> ...I am getting

06:04 <gmg> # stap -e 'probe tcp.recvmsg.return{printf("src(%s) dst(%s)\n", saddr, daddr);}'

06:04 <gmg> src(*unknown address family*) dst(*unknown address family*)

06:04 <gmg> src(*unknown address family*) dst(*unknown address family*)

06:05 <gmg> I am fairly certain that in the compiled and installed systemtap kernel module, the sk_buff structure is not right. I have used -R and -I option to stap, but still it doesn't work. Any idea as to what might be happening?

06:23 <gmg> ok.. I pulled the latest changesets and re-compiled and everything works now.. sorry for the noise

13:32 <fche> gmg, no problem, your snapshot may have come from a broken $context-var time in stap a few weeks ago