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Date:      Fri, 12 Nov 2004 16:27:14 -0800
From:      Julian Elischer <julian@elischer.org>
To:        usb@freebsd.org, peter@freebsd.org
Subject:   race condition in ehci/USB code..
Message-ID:  <419554E2.5060104@elischer.org>

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I just found a case where the ehci hardware is writing data back into a 
buffer
that has been put back on the free list.
I assume that there was a timeout on the command, but the trasaction was 
never
cancelled.. (or we a re part way through cancelling it).

Ian, was this fixed in your timeout changes you just reverted?
Does anyone else have any domain knowldge on this stuff?









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