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DragonFly bugs List (threaded) for 2010-09
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[issue1846] page fault in AcpiExReleaseMutex


From: "Edward O'Callaghan \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 18 Sep 2010 18:08:50 +0000

Edward O'Callaghan <eocallaghan@auroraux.org> added the comment:

The problem is with the AML Mutex handling function AcpiExReleaseMutex where the
function can fault under the very rare condition when the interpreter has
blocked, the interpreter lock is released, the interpreter is then reentered via
the same thread, and attempts to acquire an AML mutex that was previously acquired. 

This is indeed fixed in the acpica-unix-20100806 snapshot.

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status: unread -> chatting

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<http://bugs.dragonflybsd.org/issue1846>
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