On Fri, Jan 17, 2020 at 10:11 AM Waiman Long <longman@xxxxxxxxxx> wrote: > > I built a make with the lastest make git tree and the problem was gone > with the new make. So it was a bug in make not the kernel. Sorry for the > noise. I think I spent about three days trying to figure it out. At least it felt that way. I looked at the pipe code a _lot_, also blaming the kernel for obvious reasons. Linus