Bug 206315

Summary: Regression(r253213) Load hang and high CPU usage when trying to load myuhc.com
Product: WebKit Reporter: Chris Dumez <cdumez>
Component: Page LoadingAssignee: Chris Dumez <cdumez>
Status: RESOLVED FIXED    
Severity: Normal CC: aakash_jain, achristensen, ap, beidson, commit-queue, dbates, esprehn+autocc, ews-watchlist, ggaren, japhet, kangil.han, webkit-bot-watchers-bugzilla, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=206474
Bug Depends on:    
Bug Blocks: 204912    
Attachments:
Description Flags
Patch none

Description Chris Dumez 2020-01-15 14:09:38 PST 
Starting in r253213, we now throw when trying to do a sync XHR during unload. Unfortunately, this is confusing the script on myuhc.com and it ends up retrying the sync XHR in a tight loop.
Comment 1 Chris Dumez 2020-01-15 14:09:53 PST 
<rdar://problem/58139842>
Comment 2 Chris Dumez 2020-01-15 14:17:26 PST 
Created attachment 387846 [details]
Patch
Comment 3 Geoffrey Garen 2020-01-15 15:02:12 PST 
Comment on attachment 387846 [details]
Patch

r=me
Comment 4 WebKit Commit Bot 2020-01-15 15:55:08 PST 
Comment on attachment 387846 [details]
Patch

Clearing flags on attachment: 387846

Committed r254652: <https://trac.webkit.org/changeset/254652>
Comment 5 WebKit Commit Bot 2020-01-15 15:55:10 PST 
All reviewed patches have been landed.  Closing bug.
Comment 6 Aakash Jain 2020-01-18 07:33:46 PST 
> Committed r254652: <https://trac.webkit.org/changeset/254652>
This caused test failure on Windows as also indicated by EWS red-bubble (https://ews-build.webkit.org/#/builders/10/builds/3834)

Tracked in https://bugs.webkit.org/show_bug.cgi?id=206474