Linux 4.6 Will Try To Make It Easier To Find Assembly Code Bugs
Written by Michael Larabel in Linux Kernel on 21 March 2016 at 08:18 AM EDT. 11 Comments
LINUX KERNEL --
Linus Torvalds has honored the request to land the "objtool" stack frame validation support for the Linux 4.6 kernel.

This new Objtool effort provides build-time object file validation for kernel stack frame correctness. This new objtool user-space utility is run at the kernel's build time to analyze the resulting .o machine code, decode the instruction stream, and checks the interpreted instructions. Suspicious Assembly code patterns are then output with currently this objtool just checking frame pointer usage but other features are planned. Another early limitation is that so far, only x86_64 is supported.

Those wishing to learn more about this new objtool addition to the Linux 4.6 kernel can read more information via this Git commit.

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Michael Larabel is the principal author of Phoronix.com 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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