AMD Issues Official Statement Over osTestBackdoorATI
Written by Michael Larabel in AMD on 16 January 2014 at 06:10 PM EST. 9 Comments
A few days ago we ran a story entitled A Backdoor In AMD's Catalyst OpenCL Library? While it was later cleared up by a tweet from an AMD engineer, AMD has now issued an official statement.

That earlier article was basically an open-ended story after the oclHashcat project tweeted, "Just found in current AMD drivers (libs are not stripped): "nm /usr/lib/ | grep -i backdoor" -> ... osTestBackdoorATI."

After we drew attention to that tweet, Graham Sellers at AMD said that it was "a hook used by our automated tests to access memory usage statistics from the driver."

James Prior of AMD's Global Communication has now emailed me this afternoon with AMD's official statement over the "osTestBackdoorATI" reference:
"The symbol found inside is a non-functional test point and AMD is confident end user security has not been compromised. This, and other, test points will be removed from public libraries in all future releases."

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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