[Webkit-unassigned] [Bug 188480] New: [macOS] Multiple third party apps crash due to the thread safety check in TimerBase::setNextFireTime

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188480

            Bug ID: 188480
           Summary: [macOS] Multiple third party apps crash due to the
                    thread safety check in TimerBase::setNextFireTime
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org

Multiple third party applications are crashing inside TimerBase::setNextFireTime due to the thread-safety release assert introduced in http://trac.webkit.org/r233821 to diagnose shared timer heap corruption caused by thread safety issues.

We did catch & fix multiple bugs thanks to this release assert but this release assertion is hit by third party apps invoking WebView APIs in non-main threads on macOS.


<rdar://problem/43158535>

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