Two bugs in Linux kernels' tracing subsystem (found by OpenResty XRay)

We just published a new blog post: “Two bugs in Linux kernels’ tracing subsystem (found by OpenResty XRay)”:

https://blog.openresty.com/en/kernel-tracing-bugs-found-by-xray/

In the development and testing of OpenResty XRay, we often find many bugs in open-source software and tools. After all, OpenResty XRay elevates dynamic tracing technology to a whole new level. Our analysis tools for various technology stacks and software are much more complex than those open source tools for SystemTap, DTrace, and eBPF. Therefore, our test suite often puts unprecedented pressure on the Linux kernel, eBPF, LLVM, SystemTap, GDB, and other components. High pressure naturally catches deeper bugs.