308265 2026-02-19 17:39:30 -0800 [GStreamer] Test media/media-source/media-source-reopen.html is a flaky failure 2026-03-24 07:02:19 -0700 1 1 1 Unclassified WebKit WPE WebKit WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 309438 P2 Normal --- 1 clopez webkit-unassigned bugs-noreply philn oldest_to_newest 2183236 0 clopez 2026-02-19 17:39:30 -0800 The test media/media-source/media-source-reopen.html fails randomly on WPE and GTK The bot gtk-release completed 1055 runs on the interval [303869@main-307860@main] Frequency of results for test: media/media-source/media-source-reopen.html 1042 times [98.8%] -> NOERROR 13 times [1.2%] -> TEXT PASS Of those 1055 runs it didn't match the expectation 13 times [1.2%] Details of the type and frequency of unmatched expectations: 13 times [1.2%] -> TEXT PASS (Expected: PASS) Flakiness factor: 2.5% - This test was flaky on 2.5% of the 1055 runs analyzed, either giving different results within a single run, or a different result than in the previous run. The bot wpe-release completed 1256 runs on the interval [303869@main-307860@main] Frequency of results for test: media/media-source/media-source-reopen.html 1241 times [98.8%] -> NOERROR 15 times [1.2%] -> TEXT PASS Of those 1256 runs it didn't match the expectation 15 times [1.2%] Details of the type and frequency of unmatched expectations: 15 times [1.2%] -> TEXT PASS (Expected: PASS) Flakiness factor: 2.3% - This test was flaky on 2.3% of the 1256 runs analyzed, either giving different results within a single run, or a different result than in the previous run. This is the diff when it fails: --- /sdk/webkit/layout-test-results/media/media-source/media-source-reopen-expected.txt +++ /sdk/webkit/layout-test-results/media/media-source/media-source-reopen-actual.txt @@ -15,6 +15,7 @@ EXPECTED (video.buffered.end(video.buffered.length-1) == Math.min(audiosb.buffered.end(audiosb.buffered.length-1), videosb.buffered.end(videosb.buffered.length-1)) == 'true') OK EVENT(update) RUN(source.endOfStream()) -EVENT(ended) +EVENT(error) +[object Event] FAIL END OF TEST And it generates this stderr output: 0:00:06.395341962 1251419 0x7ff80c000e20 ERROR videometa gstvideometa.c:424:default_map: plane 1, no memory at offset 309760 0:00:06.395355768 1251419 0x7ff80c000e20 ERROR default video-frame.c:168:gst_video_frame_map_id: failed to map video frame plane 1 0:00:06.395436089 1251419 0x55a0dc0155e0 ERROR webkitcommon GStreamerCommon.cpp:1073:operator():<mse-media-player-8> Got message: error message: 0x7ff5b42ff370, time 99:99:99.999999999, seq-num 9917, element 'avdec_h264-5', GstMessageError, gerror=(GError)NULL, debug=(string)"../../../../../jhbuild/checkout/gstreamer/subprojects/gst-libav/ext/libav/gstavviddec.c\(1888\):\ get_output_buffer\ \(\):\ /GstPlayBin3:mse-media-player-8/GstURIDecodeBin3:uridecodebin3/GstDecodebin3:decodebin3-8/avdec_h264:avdec_h264-5:\012The\ video\ memory\ allocated\ from\ downstream\ pool\ could\ not\ mapped\ for\ read\ and\ write.", details=(structure)"message-details\,\ stream-id\=\(string\)1\,\ uri\=\(string\)mediasourceblob:file:///61ebad0b-2eda-426a-8ac8-194dbb2f9071\;"; 0:00:06.395450015 1251419 0x55a0dc0155e0 ERROR webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:2122:handleMessage:<mse-media-player-8> Cannot access memory for read and write operation. (url=mediasourceblob:file:///61ebad0b-2eda-426a-8ac8-194dbb2f9071) (code=7) See run details: https://build.webkit.org/results/WPE-Linux-64-bit-Release-Tests/307804@main%20(25398)/results.html 2193134 1 philn 2026-03-24 07:02:19 -0700 *** This bug has been marked as a duplicate of bug 309438 ***