RESOLVED WORKSFORME 175243
REGRESSION (iOS 11 beta 3): Microsoft Power BI crashes 
https://bugs.webkit.org/show_bug.cgi?id=175243
Summary REGRESSION (iOS 11 beta 3): Microsoft Power BI crashes
erezg
Reported 2017-08-06 04:35:14 PDT
Created attachment 317360 [details] 5 different crashes in WebCore Hi. Since iOS 11 beta 3 came out, we've started to get crashes during a login flow involving UIWebView with a password box. Our app also has several WKWebViews preloaded and kept in memory for future use. We don't get these crashes when the WKWebViews aren't loaded (no loadRequest is called) Attached here is a ZIP with 5 crash examples (we get different ones). The crash usually happens when moving out of a password box and tapping a button. Main Thread stack traces tops: - WebCore::RenderBox::scrollPosition() - WebCore::RenderLayer::hitTestList - WebCore::LayoutState::LayoutState Web Thread stack traces tops: - WebCore::FontRanges::fontForFirstRange() (crash on overflow) - WebCore::RenderBlockFlow::estimateLogicalTopPosition Would appreciate your help. Thanks!
Attachments
5 different crashes in WebCore (153.09 KB, application/zip)
2017-08-06 04:35 PDT, erezg 		no flags
Details
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Alexey Proskuryakov
Comment 1 2017-08-08 11:21:27 PDT
Does this crash in a more interesting way when using GuardMalloc or ASan (especially an ASan build of WebKit)?
Radar WebKit Bug Importer
Comment 2 2017-08-08 11:21:47 PDT
<rdar://problem/33779404>
Simon Fraser (smfr)
Comment 3 2017-08-08 17:09:16 PDT
Best way to avoid these crashes would be to migrate to WKWebView.
erezg
Comment 4 2017-08-10 04:19:48 PDT
Looks like iOS 11 beta 5 handled all issues and I don't see these crashes anymore. I'll file another bug in case something pops up in future versions. Thanks!
Alexey Proskuryakov
Comment 5 2017-08-10 10:13:52 PDT
Thank you for following up!
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