REGRESSION (r245715?) [WK2] Layout Test http/wpt/cache-storage/cache-storage-networkprocess-crash.html is a flaky failure

[Shawn Roberts]

The following layout test is flaky on Mac and iOS Simulator WK2 Release and Debug

http/wpt/cache-storage/cache-storage-networkprocess-crash.html

Probable cause:

Most probably cause looks like r245715 is causing the issue. Test is hitting a harness timeout

Currently I cannot reproduce locally in iOS Simulator or Mojave WK2 Release

Attempting in a few other configurations, and then will try with test lists from workers on runs.

so far attempted:


run-webkit-tests http/wpt/cache-storage/cache-storage-networkprocess-crash.html --iter 500 -f
ditto -fg
ditto --ios-simulator -f

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Fwpt%2Fcache-storage%2Fcache-storage-networkprocess-crash.html

Diff:

--- /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/http/wpt/cache-storage/cache-storage-networkprocess-crash-expected.txt
+++ /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/http/wpt/cache-storage/cache-storage-networkprocess-crash-actual.txt
@@ -1,8 +1,5 @@
-CONSOLE MESSAGE: Cache API operation failed: Internal error
-CONSOLE MESSAGE: Cache API operation failed: Internal error
-CONSOLE MESSAGE: Cache API operation failed: Internal error
-CONSOLE MESSAGE: Cache API operation failed: Internal error
-CONSOLE MESSAGE: Cache API operation failed: Internal error
 
-PASS Pending cache operation on network process crash 
+Harness Error (TIMEOUT), message = null
 
+TIMEOUT Pending cache operation on network process crash Test timed out
+

[Radar WebKit Bug Importer]

<rdar://problem/51114899>

[Truitt Savell]

I was able to reproduce just with:
run-webkit-tests http/wpt/cache-storage/cache-storage-networkprocess-crash.html --iterations 100 -f

[Shawn Roberts]

Not sure why Truitt can reproduce it, I cannot reproduce it with the test by itself on two computers ?? 

However I was able to run it with the test list and find a repro that works for me. Youenn if you cannot use the above repro's, then this worked for me locally 100% of the time with:

run-webkit-tests http/tests/workers/service/serviceworkerclients-matchAll.https.html http/wpt/cache-storage/cache-storage-networkprocess-crash.html --child-process 1

It will fail test harness timeout, and then pass on retry.

[youenn fablet]

Created attachment 370596 [details]
Patch

[EWS Watchlist]

Comment on attachment 370596 [details]
Patch

Attachment 370596 [details] did not pass win-ews (win):
Output: https://webkit-queues.webkit.org/results/12282798

New failing tests:
js/dom/custom-constructors.html

[EWS Watchlist]

Created attachment 370610 [details]
Archive of layout-test-results from ews210 for win-future

The attached test failures were seen while running run-webkit-tests on the win-ews.
Bot: ews210  Port: win-future  Platform: CYGWIN_NT-10.0-17763-3.0.5-338.x86_64-x86_64-64bit

[WebKit Commit Bot]

Comment on attachment 370596 [details]
Patch

Clearing flags on attachment: 370596

Committed r245767: <https://trac.webkit.org/changeset/245767>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.