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RESOLVED FIXED
198766
Add assertions to help debug crash at WebKit::HistoryEntryDataEncoder::operator<<
https://bugs.webkit.org/show_bug.cgi?id=198766
Summary
Add assertions to help debug crash at WebKit::HistoryEntryDataEncoder::operat...
Sihui Liu
Reported
2019-06-11 13:44:18 PDT
...
Attachments
Patch
(3.11 KB, patch)
2019-06-11 13:46 PDT
,
Sihui Liu
no flags
Details
Formatted Diff
Diff
Patch
(3.11 KB, patch)
2019-06-11 14:25 PDT
,
Sihui Liu
no flags
Details
Formatted Diff
Diff
Patch
(3.10 KB, patch)
2019-06-12 09:18 PDT
,
Sihui Liu
no flags
Details
Formatted Diff
Diff
Patch for landing
(3.18 KB, patch)
2019-06-12 14:54 PDT
,
Sihui Liu
no flags
Details
Formatted Diff
Diff
Show Obsolete
(3)
View All
Add attachment
proposed patch, testcase, etc.
Sihui Liu
Comment 1
2019-06-11 13:46:03 PDT
Created
attachment 371874
[details]
Patch
Sihui Liu
Comment 2
2019-06-11 14:25:44 PDT
Created
attachment 371879
[details]
Patch
Sihui Liu
Comment 3
2019-06-12 09:18:55 PDT
Created
attachment 371968
[details]
Patch
Geoffrey Garen
Comment 4
2019-06-12 11:15:58 PDT
Comment on
attachment 371968
[details]
Patch View in context:
https://bugs.webkit.org/attachment.cgi?id=371968&action=review
r=me
> Source/WebKit/Shared/SessionState.h:116 > + bool isDestructed { false }; > + ~FrameState() { isDestructed = true; }
This probably deserves a comment that it's only here to help debug an undiagnosed bug, with a Bugzilla or Radar link.
Sihui Liu
Comment 5
2019-06-12 14:54:17 PDT
Created
attachment 371990
[details]
Patch for landing
WebKit Commit Bot
Comment 6
2019-06-12 15:36:37 PDT
Comment on
attachment 371990
[details]
Patch for landing Clearing flags on attachment: 371990 Committed
r246382
: <
https://trac.webkit.org/changeset/246382
>
WebKit Commit Bot
Comment 7
2019-06-12 15:36:38 PDT
All reviewed patches have been landed. Closing bug.
Radar WebKit Bug Importer
Comment 8
2019-06-12 15:39:17 PDT
<
rdar://problem/51686085
>
Darin Adler
Comment 9
2019-06-13 09:22:34 PDT
Comment on
attachment 371990
[details]
Patch for landing View in context:
https://bugs.webkit.org/attachment.cgi?id=371990&action=review
> Source/WebKit/UIProcess/API/C/WKPage.cpp:485 > + auto data = encodeLegacySessionState(sessionState); > if (shouldReturnData) > - return toAPI(encodeLegacySessionState(sessionState).leakRef()); > + return toAPI(data.leakRef());
This isn’t adding an assertion. This is refactoring that causes us to do additional work when shouldReturnData is false. Nothing in the change log makes it clear why this is a desirable change.
Sihui Liu
Comment 10
2019-06-13 11:14:41 PDT
Comment on
attachment 371990
[details]
Patch for landing View in context:
https://bugs.webkit.org/attachment.cgi?id=371990&action=review
>> Source/WebKit/UIProcess/API/C/WKPage.cpp:485 >> + return toAPI(data.leakRef()); > > This isn’t adding an assertion. This is refactoring that causes us to do additional work when shouldReturnData is false. Nothing in the change log makes it clear why this is a desirable change.
Right, add some explaining here for reference. Previously the crash traces tell us: WKPageCopySessionState returns WKSessionStateRef => Some pointer casts by user => WKSessionStateCopyData(WKSessionStateRef) -> encodeLegacySessionState(sessionState) [Crash] Now: WKPageCopySessionState [try encodeLegacySessionState(sessionState)] returns WKSessionStateRef => pointer casts => WKSessionStateCopyData(WKSessionStateRef) -> encodeLegacySessionState(sessionState) If we start to see crashes in WKPageCopySessionState after this change, we can confirm sessionState is bad before the casts.
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