[Bug 52164] New: mfplat:mfplat gets stuck in test_MFCreateDXSurfaceBuffer() on cw-gtx560 (Nvidia)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52164

            Bug ID: 52164
           Summary: mfplat:mfplat gets stuck in
                    test_MFCreateDXSurfaceBuffer() on cw-gtx560 (Nvidia)
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mfplat
          Assignee: wine-bugs at winehq.org
          Reporter: fgouget at codeweavers.com

mfplat:mfplat gets stuck on cw-gtx560 (Nvidia):

07b4:mfplat: 6 tests executed (0 marked as todo, 0 failures), 0 skipped.
1760:mfplat: 8 tests executed (0 marked as todo, 0 failures), 0 skipped.
1ab4:mfplat: 8 tests executed (0 marked as todo, 0 failures), 0 skipped.
0668:mfplat: 8 tests executed (0 marked as todo, 0 failures), 0 skipped.
mfplat:mfplat:1ae8 done (258) in 120s

(258 == WAIT_TIMEOUT)
https://test.winehq.org/data/patterns.html#mfplat:mfplat

Running with WINETEST_REPORT_SUCCESS shows that the freeze happens in
test_MFCreateDXSurfaceBuffer(), specifically in the first
IMFMediaBuffer_Unlock() call.

    hr = IMFMediaBuffer_Lock(buffer, &data, NULL, &length);
    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
    ok(length == max_length, "Unexpected length.\n"); // <--- last trace

    /* Unlock twice. */
    hr = IMFMediaBuffer_Unlock(buffer);
    ok(hr == S_OK, "Unexpected hr %#x.\n", hr); // <--- never seen


This is specific to cw-gtx560, the TestBot's only Nvidia test configuration. It
also only happens on Windows 10, from 1709 to 21H1: the test succeeds on
cw-gtx560 when running Windows 8.1 despite the fact that it still runs
test_MFCreateDXSurfaceBuffer() (the skip trace is not present in the win81
WineTest report).

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