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February 2017


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Jonathan Bell <[log in to unmask]>
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Jonathan Bell <[log in to unmask]>
Fri, 24 Feb 2017 21:29:25 +0000
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Please see the announcement below for a talk coming up on 3/2 at 2:00pm in room 4801. Luis is currently a Post Doc at Imperial College London where he’s working with Cristian Cadar, the creator of the Klee symbolic analysis tool. Luis works in the space between programming languages, software systems, and security.

Title: Deploying Incompatible Unmodified Dynamic Analyses in Production via Multi-version Execution


Popular dynamic analysis tools such as Valgrind and compiler sanitizers are
effective at finding and diagnosing challenging bugs and security
vulnerabilities.  However, they cannot be combined on the same program
execution, and incur a high overhead, which typically prevents them from being
used in production.

In this talk I will present the FreeDA system which enables to deploy existing
multiple incompatible dynamic analysis tools without requiring any modification
and while masking their overhead.  FreeDA levarages on multi-version execution,
in which the dynamic analyses are run alongside the production system.  FreeDA
is applicable in several common scenarios, involving network servers and
interactive applications.  In particular, FreeDA is able to deploy Valgrind and
Clang's sanitizers to high-performance servers, such as Ngninx and Redis, and
interactive applications, such as Git and HTop.


Luís Pina is currently a post-doc at the Software Reliability Group (SRG) at
Imperial College London. He was part of the Programming Languages Group (PLUM)
at University of Maryland from 2012 to 2015, and part of the Software
Engineering Group (ESW) at INESC-ID in Lisbon from 2009 to 2012.

He holds a PhD on Computer Science from Instituto Superior Técnico, University
of Lisbon, Portugal.  He developed his dissertation under the supervision of
Prof. Luís Veiga and Prof. Michael Hicks, focusing on making Dynamic Software
Updates (DSU) practical.

Luís is now working on Multi-Version Execution, with Prof. Cristian Cadar,
exploring how to use this technique to deploy costly dynamic analysis techniques
in production environments.