RESOLVED WONTFIX 210213
Release WebGLLayer earlier in ~GraphicsContextGLOpenGL 
https://bugs.webkit.org/show_bug.cgi?id=210213
Summary Release WebGLLayer earlier in ~GraphicsContextGLOpenGL
Kenneth Russell
Reported 2020-04-08 14:40:44 PDT
In GraphicsContextGLOpenGL::~GraphicsContextGLOpenGL in Source/WebCore/platform/graphics/cocoa/GraphicsContextGLOpenGLCocoa.mm, the native context is deleted and [WebGLLayer setContext:] called immediately afterward to clear out its NakedPtr<GraphicsContextGLOpenGL>. In order to allow WebGLLayer's cleanup code to potentially do work with the native context, it seems appropriate to release the WebGLLayer earlier. May be related to other recently filed crashes.
Attachments
Patch (3.23 KB, patch)
2020-04-08 14:44 PDT, Kenneth Russell 		no flags
DetailsFormatted DiffDiff
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Kenneth Russell
Comment 1 2020-04-08 14:44:06 PDT
Created attachment 395871 [details] Patch
EWS
Comment 2 2020-04-08 15:57:56 PDT
Committed r259764: <https://trac.webkit.org/changeset/259764> All reviewed patches have been landed. Closing bug and clearing flags on attachment 395871 [details].
Radar WebKit Bug Importer
Comment 3 2020-04-08 15:58:13 PDT
<rdar://problem/61482594>
Ryan Haddad
Comment 4 2020-04-10 17:41:42 PDT
Reverted r259764 for reason: Causes layout test crashes under GuardMalloc Committed r259915: <https://trac.webkit.org/changeset/259915>
Ryan Haddad
Comment 5 2020-04-10 17:44:23 PDT
(In reply to Ryan Haddad from comment #4) > Reverted r259764 for reason: > > Causes layout test crashes under GuardMalloc > > Committed r259915: <https://trac.webkit.org/changeset/259915> We were seeing crashes on iOS Simulator when running tests under GuardMalloc These are some of the tests that hit crashes: fast/canvas/webgl/no-info-log-for-simple-shaders.html fast/canvas/webgl/tex-image-and-sub-image-2d-with-image.html webgl/1.0.3/conformance/extensions/ext-blend-minmax.html fast/canvas/webgl/no-info-log-for-simple-shaders.html
Kenneth Russell
Comment 6 2020-04-10 18:16:26 PDT
Thanks Ryan and sorry about the crashes. Was worried about that. How can I run my local iOS Simulator build with GuardMalloc?
Kenneth Russell
Comment 7 2020-04-13 16:11:44 PDT
Note - per fix in Bug 210222, if that one lands and sticks, I'll likely close this as WontFix rather than trying to pursue it further.
Kenneth Russell
Comment 8 2020-04-20 11:21:38 PDT
The fix for Bug 210222 seems that it's stable and won't be reverted, so closing this out as WontFix.
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