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Device drivers often suffer from much more bugs than the kernel, so testing device drivers becomes more and more important and necessary. In software testing, runtime tracing is an important technique to monitor real executing procedures of the program. Meanwhile, runtime information can also assist the programmer to make more accurate analysis of the program, like verifying the correctness of code...
Kernel drivers are usually provided in the form of loadable kernel extensions, which can be loaded/unloaded dynamically at runtime and execute with the same privilege as the core operating system kernel. The unrestricted security access from the drivers to the kernel is nevertheless a double-edged sword that makes them susceptible targets of trojan attacks. Given a benign driver, it is now easy to...
Embedded systems are becoming increasingly ubiquitous, controlling a wide variety of popular and safety-critical devices. Effective testing techniques could improve the dependability of these systems. In prior work we presented an approach for testing embedded systems, focusing on embedded system applications and the tasks that comprise them. In this work we focus on a second but equally important...
Support vector data description (SVDD) has become a very attractive kernel method due to its good results in many novelty detection problems. However, the decision function of SVDD is expressed in terms of the kernel expansion, which results in a run-time complexity linear in the number of support vectors. For applications where fast real-time response is needed, how to speed up the decision function...
Commercial-off-the-shelf operating systems (COTS OSs) are increasingly chosen as key building blocks in embedded system design due to their rich feature-set available at low costs. Unfortunately, as the complexity of such OSs increases, testing key OS components such as device drivers (DD) to ensure continuous service provision becomes increasingly challenging. Despite the improving test efforts targeting...
As the complexity of modern Operating Systems (OS) increases, testing key OS components such as device drivers(DD) becomes increasingly complex given the multitude of possible DD interactions. If representative operational activity profiles of DDs within an OS could be obtained, these could significantly improve the understanding of the actual operational DD state space towards guiding the test efforts...
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