Safari crashes constantly- Crashed Thread: 6 JavaScriptCore::Marking

Question

This has been happening for a while and crash reports are always the same. :  Crashed Thread:  6  JavaScriptCore::MarkingI&#x27;ve used Apple Hardware Test and Rember to test if it&#x27;s a RAM issue, but both come up fine and don&#x27;t detect anything. Below is the latest truncated report. I&#x27;ll post the full one if necessary.Process:         WebProcess [870]Path:            /System/Library/StagedFrameworks/Safari/WebKit2.framework/WebProcess.app/Conten ts/MacOS/WebProcessIdentifier:      com.apple.WebProcessVersion:         8537 (8537.73.11)Build Info:      WebKit2-7537073011000000~3Code Type:       X86-64 (Native)Parent Process:  ??? [780]User ID:         501Date/Time:       2014-02-12 11:10:20.863 -0500OS Version:      Mac OS X 10.8.5 (12F45)Report Version:  10Interval Since Last Report:          393622 secCrashes Since Last Report:           3Per-App Interval Since Last Report:  134969 secPer-App Crashes Since Last Report:   1Anonymous UUID:                      63079B78-60B2-A08F-2673-81DFC5AB9A8DCrashed Thread:  6  JavaScriptCore::Marking…………Thread 6 Crashed:: JavaScriptCore::Marking0   com.apple.JavaScriptCore                0x0000000106793bda JSC::CodeBlock::updateAllPredictionsAndCountLiveness(JSC::OperationInProgress, unsigned int&amp;, unsigned int&amp;) + 1541   com.apple.JavaScriptCore                0x000000010689b315 JSC::CodeBlock::stronglyVisitStrongReferences(JSC::SlotVisitor&amp;) + 13172   com.apple.JavaScriptCore                0x000000010689abee JSC::CodeBlock::visitAggregate(JSC::SlotVisitor&amp;) + 3823   com.apple.JavaScriptCore                0x000000010689ad4f JSC::FunctionExecutable::visitChildren(JSC::JSCell*, JSC::SlotVisitor&amp;) + 1594   com.apple.JavaScriptCore                0x000000010671918d JSC::SlotVisitor::drain() + 5415   com.apple.JavaScriptCore                0x0000000106718d27 JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode) + 3436   com.apple.JavaScriptCore                0x00000001066fb67a JSC::GCThread::gcThreadMain() + 747   com.apple.JavaScriptCore                0x00000001066f05ef ***::wtfThreadEntryPoint(void*) + 158   libsystem_c.dylib                       0x00007fff8a523772 _pthread_start + 3279   libsystem_c.dylib                       0x00007fff8a5101a1 thread_start + 13

Linc Davis · Answer

That kind of crash is usually, or perhaps always, caused by a hardware fault.If your model has user-replaceable memory, and you&#x27;ve upgraded the memory modules, reinstall the original memory and see whether there&#x27;s any improvement. Be careful not to touch the gold contacts. Clean them with a mild solvent such as rubbing alcohol. Aftermarket memory must exactly match the technical specifications for your model. Memory that is either slower or faster than specified may be incompatible.Apple Diagnostics or the Apple Hardware Test, though generally unreliable, will sometimes detect a fault. A negative test can&#x27;t be depended on. Run the extended version of the test, if applicable.

Warped · Answer

I did run both tests in the extended indepth mode, but both came back clean. interesteing why if this is a RAM issue why both Apple Diognostics and Rember turned up nothing. I&#x27;m positive that the RAM matches the system. I did recently upgraded all ofthe RAM and was working for several weeks before the crashes started. I swapped the old RAM back in to see if the crashes continue. I&#x27;ll keep you posted. I&#x27;ll need ot get 90% alcohol before I try cleaning hte RAM.