1330133 - 1,100 instances of "NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005" emitted from dom/media/MediaResource.cpp during linux64 debug testing

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect, P5)

Description

[Eric Rahm [:erahm]]

> 1106 WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005: file dom/media/MediaResource.cpp, line 1608

This warning [1] shows up in the following test suites:

>    518 - test-linux64/debug-mochitest-media-e10s mda
>    498 - test-linux64/debug-mochitest-media mda
>     36 - test-linux64/debug-reftest-no-accel-6 Ru6
>     34 - test-linux64/debug-reftest-6 R6
>      4 - test-linux64/debug-web-platform-tests-reftests-e10s Wr
>      4 - test-linux64/debug-mochitest-webgl-e10s-1 gl1
>      4 - test-linux64/debug-mochitest-webgl-1 gl1
>      4 - test-linux64/debug-web-platform-tests-reftests Wr
>      2 - test-linux64/debug-mochitest-webgl-e10s-3 gl3
>      2 - test-linux64/debug-mochitest-webgl-3 gl3

It shows up in 154 tests. A few of the most prevalent:

>     56 - [e10s] dom/media/test/test_media_selection.html
>     34 -        dom/media/test/test_played.html
>     30 - [e10s] dom/media/test/test_played.html
>     28 -        dom/media/test/test_media_selection.html
>     20 - [e10s] dom/media/test/test_load.html
>     20 -        dom/media/test/test_load.html
>     18 -        dom/media/test/test_play_promise_13.html
>     18 -        dom/media/test/test_clone_media_element.html
>     17 -        dom/media/test/test_play_promise_16.html
>     16 - [e10s] dom/media/test/test_video_dimensions.html

[1] https://hg.mozilla.org/mozilla-central/annotate/2977ca122452/dom/media/MediaResource.cpp#l1608

Comment 1

[JW Wang [:jwwang] [:jw_wang]]

Assign this bug to Alastor which has some experience with MediaResource.

Comment 2

[Andrew McCreight [:mccr8]]

I don't see anything similar warnings in the top 100 under dom/media. It looks like MediaResourceIndex::ReadAt() has been completely rewritten since this bug was filed.