On Sat, 22 Dec 2018 at 08:41, Paolo Bonzini <pbonz...@redhat.com> wrote: > > On 21/12/18 22:09, Peter Maydell wrote: > > I don't really understand what's going on here, or why > > it only happens with this one system (my main x86-64 > > Linux Ubuntu 16.04.5 box) and not the various others I'm > > running test builds on. But it does seem to be 100% > > reliable with any of these pullreqs with the new test > > driver in them :-( > > I'm afraid something in your setup is causing make's stdout to have > O_NONBLOCK set. Make doesn't use O_NONBLOCK at all, so it must be > something above it. I also checked Perl with strace and, at least here, > it doesn't set O_NONBLOCK. > > So here are some ideas... First, can you try applying something like > this to reproduce?
OK, I'll give these a go, but it'll have to be in January now. thanks -- PMM
