[Webkit-unassigned] [Bug 209846] New: [WPE] Debug bot timeouts with many unresponsive webprocess errors

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Mar 31 21:44:04 PDT 2020


https://bugs.webkit.org/show_bug.cgi?id=209846

            Bug ID: 209846
           Summary: [WPE] Debug bot timeouts with many unresponsive
                    webprocess errors
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WPE WebKit
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lmoura at igalia.com
                CC: bugs-noreply at webkitgtk.org

Right after starting the tests, many of the workers fail to run the first tests, with messages like:

04:32:07.666 78279 WPEWebProcess is unresponsive, pid = None
04:32:07.668 78279 worker/8 crypto/workers/crypto-gc-worker.html output stderr lines:
04:32:07.668 78279   <unknown> - TestController::run - Failed to reset state to consistent values
04:32:07.668 78279   #PROCESS UNRESPONSIVE - WPEWebProcess
04:32:07.693 78279 "ruby --version" took 0.02s
04:32:07.838 78279 "ruby -I /home/buildbot/wpe/wpe-linux-64-debug-tests/build/Websites/bugs.webkit.org/PrettyPatch /home/buildbot/wpe/wpe-linux-64-debug-tests/build/Websites/bugs.webkit.org/PrettyPatch/prettify.rb /home/buildbot/wpe/wpe-linux-64-debug-tests/build/layout-test-results/crypto/workers/crypto-gc-worker-diff.txt" took 0.14s

It seems to have started around build #3470 (containing revisions r256477 through r256502, Feb 12th). Before it, this error happened rather sparsely (see list below). Since this build, it started occurring right from the start quite frequently.

Occurrences of this error in the builds before:

* 3457 - 0 - Earliest build checked
* ... No ocurrences between
* 3463 - 0
* 3464 - 1 - transitions/negative-delay.html, late in the test run
* 3465 - 1 - storage/indexeddb/pending-version-change-on-exit-private.html, late in the test run
* 3466 - 0
* 3467 - 0
* 3468 - 1 - storage/indexeddb/optional-arguments.html, late in the test run
* 3469 - 1 - imported/w3c/web-platform-tests/html/browsers/history/the-history-interface/history_go_minus.html
* 3470 - 14 - All 10 workers fail in the first test they run, with more failures later, triggering the circuit breaker.

Link to build: https://build.webkit.org/builders/WPE%20Linux%2064-bit%20Debug%20%28Tests%29/builds/3470

Still have not managed to reproduce it locally.

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