[Webkit-unassigned] [Bug 166957] New: [WK2][Cocoa] Avoid null dereference in FullScreen code.
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Jan 11 18:01:13 PST 2017
https://bugs.webkit.org/show_bug.cgi?id=166957
Bug ID: 166957
Summary: [WK2][Cocoa] Avoid null dereference in FullScreen
code.
Classification: Unclassified
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: WebKit2
Assignee: webkit-unassigned at lists.webkit.org
Reporter: bfulgham at webkit.org
Crash tracing statistics indicate that the 'WebVideoFullScreenManager::didSetupFullscreen' encounters stability issues under certain conditions.
We do not have a reproducible test case showing this behavior, but code inspection indicates that the page values in the completion Block were not being referenced consistently with other methods in the same class. It also did not account for the possibility that the page object had been cleared between starting the dispatch and when the block actually runs.
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