https://bugzilla.redhat.com/show_bug.cgi?id=1087720
--- Comment #6 from Matthew Heon mheon@redhat.com --- Signal 17, SIGCHILD, is deliberately not forwarded - upstream commit https://github.com/dotcloud/docker/commit/440422a96346072a0a9016c4db78ff7599....
Signal 19 might actually be a Golang bug - I've constructed a small test program in Go which also fails to catch this. Looking into this further.