Oracle Solaris Performance, Panics, Hangs, and Dtrace (MOSC)

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How to debug random identical SIGBUS errors? (Solaris 10 / x64 /x4150M2)

edited Dec 26, 2015 10:02AM in Oracle Solaris Performance, Panics, Hangs, and Dtrace (MOSC) 3 commentsAnswered

Hi all,

I'm seeing our application crash on multiple production servers with a specific (but randomly occurring) SIGBUS that I can't replicate in our test environment.  (Same hardware and OS images.)

How can I go about ascertaining the root cause?

I've been able to grab a few pstacks, and the top is always very much like this:

fffffd7ffa2aba87 FcCharSetFindLeafPos () + 27

fffffd7ffa2abbd4 FcCharSetFindLeaf () + 34

fffffd7ffa2acfc4 FcCharSetHasChar () + 34

fffffd7ffc9c7404 bool QFontEngineFT::stringToCMap(const QChar*,int,QGlyphLayout*,int*,QFlags<QTextEngine::ShaperFlag>)const () + 2e4

fffffd7ffc8da23a QFixed QFontEngine::averageCharWidth()const () + 15a

fffffd7ffc9c5d15 QFixed QFontEngineFT::averageCharWidth()const () + a5

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