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WebRtcCaptureFromElementBrowserTest.VerifyCanvasWebGLCaptureColor failing reliably on Android Tests (dbg) (L Nexus6) WebRTC bot |
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Issue descriptionFirst failed run: https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%28dbg%29%20%28L%20Nexus6%29/builds/14774 Last good run: https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Tests%20%28dbg%29%20%28L%20Nexus6%29/builds/14773 There were no WebRTC commits between the failed runs. Chrome version for the last good run is 462254 Chrome version for the first bad run is 462264 The error is detected on this line: https://cs.chromium.org/chromium/src/content/test/data/media/canvas_capture_color.html?q=canvas_capture_color.html&sq=package:chromium&dr&l=90 Sample log line: C 858.462s Main [INFO:CONSOLE(90)] "Expected 0,0,255,229.5, got 0,0,27,229", source: http://127.0.0.1:52887/media/canvas_capture_color.html (90) Which is repeated many times.
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Apr 7 2017
I didn't find any obvious commit in the Chromium range that might break this . I speculatively reverted https://codereview.chromium.org/2797973002, which is in the range, but it did not fix the problem, so I relanded it.
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Apr 7 2017
Hmm, the blame list is: https://chromium.googlesource.com/chromium/src/+log/12af4f53a6107c5c80252666c804fb5a262b01bf..0738354f2a76055b590c45b691e48c19c6281fbf?pretty=fuller (created by looking at parent_got_cr_revision for the last green+first red builds) https://codereview.chromium.org/2797973002 is not even in this range, but I understand if you ended up with the wrong revision range since the got_cr_revision properties can be misleading ( bug 670856 which I have a fix in progress for). Can you see something suspicious in the range above? My best bet is https://chromium.googlesource.com/chromium/src/+/65a58f0cd7291f90e7edd10ea42c7c8de24f3d1a or the skia roll in https://chromium.googlesource.com/chromium/src/+/84e5378049c4ae1c361c0bfacfb11ecec487ef2a I also don't understand why this fails only on our bot, it runs on the regular bots, like Nexus 5Xs in https://build.chromium.org/p/chromium.linux/builders/Android%20Tests/builds/40316 Do you think it's specific to Nexus 6 and/or the particular Android version on that bot?
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Apr 10 2017
I am clueless as to why this fails only on that particular bot.
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Apr 10 2017
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Apr 10 2017
The skia roll has "reed remove android legacy flags". That looks like something which can affect specific versions of Android.
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Apr 10 2017
reed@ could you PTAL?
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Apr 11 2017
Marking as fixed since the bot has now been green for the last five runs. Was something done to specifically to fix this bug, or was it a nice side effect of some other work? |
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