Bug 214805 – [GTK] API test WebKit.OnDeviceChangeCrash is flaky timeout

• Status: RESOLVED
• Resolution: FIXED
• Component: WebKitGTK

[Diego Pino]

See https://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release%20%28Tests%29/builds/14898/steps/API%20tests/logs/stdio

The test was flaky too in other recent GTK Tests builds such as #14861 and #14863.

(WebKitWebProcess:16523): Gdk-[1;33mWARNING[0m **: [34m21:38:05.150[0m: The program 'WebKitWebProcess' received an X Window System error.

This probably reflects a bug in the program.

The error was 'BadMatch (invalid parameter attributes)'.

  (Details: serial 202 error_code 8 request_code 148 (GLX) minor_code 34)

  (Note to programmers: normally, X errors are reported asynchronously;

   that is, you will receive the error a while after causing it.

   To debug your program, run it with the GDK_SYNCHRONIZE environment

   variable to change this behavior. You can then get a meaningful

   backtrace from your debugger if you break on the gdk_x_error() function.)

**FAIL** WebKit.OnDeviceChangeCrash



../../Tools/TestWebKitAPI/Tests/WebKit/UserMedia.cpp:157

Value of: !didCrash

  Actual: false

Expected: true

[Lauro Moura]

This test was passing consistently from revisions 238236@main (earliest known result in the current buildbot) to 243130@main (mid-October 2021).

But between 243131@main and 243249@main (both inclusive), it started a consistent timeout spell, becoming a flaky timeout since.

This consistent timeout spell was related to the ccache issues generating invalid builds, as many unrelated tests also failed, but given the flakiness afterward, the commit that introduced the issue is likely in this range.

Unfortunately, couldn't reproduce locally yet.

In WPE, it's much less flaky, with less than 1 timeout per hundred builds.

[Vitaly Dyackhov]

See also: https://bugs.webkit.org/show_bug.cgi?id=258353

[Vitaly Dyackhov]

Pull request: https://github.com/WebKit/WebKit/pull/15365

[EWS]

Committed 265577@main (e289c4e0a33a): <https://commits.webkit.org/265577@main>

Reviewed commits have been landed. Closing PR #15365 and removing active labels.