[Bug 54078] New: ntdll:pipe - test_blocking() sometimes fails in Wine when the pipe is not signaled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54078

Bug ID: 54078
           Summary: ntdll:pipe - test_blocking() sometimes fails in Wine
                    when the pipe is not signaled
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

ntdll:pipe - test_blocking() sometimes fails in Wine when the pipe is not
signaled:

pipe.c:1769: Test marked todo: client is not signaled
pipe.c:1751: Test failed: pipe is not signaled
pipe.c:1769: Test marked todo: client is not signaled
pipe.c:1770: Test failed: pipe is not signaled

See https://test.winehq.org/data/patterns.html#ntdll:pipe

Here is this failure's nightly WineTest run history:
* There was no failure in June and July.
* The first known failure happened on 2022-08-13, the next on 2022-08-18.
* The third failure happened on 2022-09-23.
* The fourth on 2022-11-04 which was followed by 9 more in November.

So it's likely something changed in early August-ish that introduced this
failure. But there has been a further change in November that makes it more
frequent (maybe the latter is because the TestBot now runs two VMs at a time so
the host is more busy, though that started a bit earlier, on 2022-10-25).

This failure also happens in the GitLab CI.