Dealing with Weird ELF Libraries

• tracer

  2 5 7.2 Java

  Graal based x86 interpreter with separate execution trace analyzer (by pekd)

> Even the likes of gdb are rendered powerless before the might of this uber segfault.

It's quite easy to debug crashes in the dynamic linker if you use a more powerful debugger. For example there is a Graal based AMD64 VM [1] which can record an execution trace of the entire program run, including the dynamic linker, and then you can analyze the execution trace offline and see exactly what happened / what didn't happen or where the linker crashed and how it got there. In case you ever wondered what the kernel roughly does when loading an ELF file: look at the re-implementation in the ElfLoader class of that project.

[1] https://github.com/pekd/tracer

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