Tracing: The Bane of Security Folks - Understanding Kernel Tracing Techniques
Explore the complex relationship between tracing and security in this 34-minute conference talk by Steven Rostedt from VMware Inc. Delve into the conflicting goals of tracing and security in the Linux kernel, examining how tracing aims to provide maximum information while security strives to conceal it. Learn about the tactics employed by tracing mechanisms, including live text modification and call redirection, which mirror techniques used by rootkits. Gain insights into the challenges of balancing tracing functionality with security concerns, and understand why security professionals must be well-versed in tracing methodologies. Discover topics such as isolation, lockdown, function tracing, and FTrace, concluding with a Q&A session to address audience inquiries.