[Webkit-unassigned] [Bug 71718] Apparent threading bug causes intermittent segfaults

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71718





--- Comment #2 from Andrew Wason <rectalogic at rectalogic.com>  2011-11-08 08:16:55 PST ---
Created an attachment (id=114075)
 --> (https://bugs.webkit.org/attachment.cgi?id=114075&action=review)
valgrind log

I built webkit with ENABLE_JIT=0 so that valgrind can be used, and after repeated runs was able to catch the error in the attached valgrind log.

The problem seems to be that the static Mutex in Source/JavaScriptCore/wtf/qt/ThreadingQt.cpp:threadMapMutex() is sometimes destroyed at process exit while the WorkerThreads are shutting down. The WorkerThreads are using the destroyed threadMapMutex while they are shutting down.

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