DevConf.US 2019 has ended
DevConf.us 2019 is the 2nd annual, free, Red Hat sponsored technology conference for community project and professional contributors to Free and Open Source technologies held at the Boston University in the historic city of Boston, USA.

When: Thursday, August 15 to Saturday, August 17, 2018

Venue: Boston University, George Sherman Union Building
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Saturday, August 17 • 11:40 - 12:25
Objtool: A Hidden Gem of Executable Parsing

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While ELF is an old standard it has enabled the development of remarkable tools and the Linux Kernel's objtool scanner is a great example of this. Objtool has evolved over time from a stack checker to enabling such kernel features as reliable, super-low overhead stack tracing, live patching, and more. Recently checks for Spectre/Meltdown mitigation and other useful checks have also been incorporated. Objtool achieves these feats by scanning the object files produced by the compiler, checking code patterns, and collecting information that the kernel uses at runtime to implement these features. We'll go into detail on how objtool does this and, finally, we'll discuss ongoing work incorporating other kernel build-time scanning tools into objtool.

avatar for Matt Helsley

Matt Helsley

Open Source Engineer, VMware
Matt recently joined the systems group within VMware's Open Source Technology Center. Prior to this Matt worked on crazy kernel patches related to container checkpoint/restart, cgroups, CKRM, and more at IBM's Linux Technology Center.

Saturday August 17, 2019 11:40 - 12:25 EDT
East Balcony GS Union, BU