On Thu, Mar 5, 2020 at 10:41 AM Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Mar 5, 2020 at 12:20 PM Andrei Vagin <avagin@xxxxxxxxx> wrote: > > > > After this change, one more criu test became flaky. This is due to one > > of corner cases, so I am not sure that we need to fix something in the > > kernel. I have fixed this issue in the test. I am not sure that this > > will affect any real applications. > > It's an interesting test-case, but it's really not doing anything you > should rely on. I'm agree with this. > But if CRIU itself depends on this behavior (rather than just a test), > then I guess we need to. > > So is it just a test-case, or does CRIU itself depend on that "reads > get full buffers"? As mentioned, that really _is_ fundamentally broken > if there is any chance of signals.. No, it doesn't. I'm agree that we can wait an report from a real app. Thanks! Andrei