Grant Seltzer

@GrantSeltzer

Aspiring free software hacker

Brooklyn, NY
grant.pizza
Vrijeme pridruživanja: ožujak 2017.
48 fotografija ili videozapisa Fotografije i videozapisi

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  1. 30. sij

    Oster now supports multiple functions :) Next absolute priority is testing and documentation.

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  2. 25. sij

    and runes!

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  3. 24. sij

    Oster now supports arrays :)

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  4. proslijedio/la je Tweet
    23. sij

    Pro tip: Do not disable SELinux. Learn tools that can fix those issues on a CentOS or RHEL boxes.

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  5. 20. sij

    I'm looking to set up CI for where I can have automated builds on github PRs. I'd want to run integration tests using multiple version of Go on each of a handful of different architectures. Anyone have recommendations? Relevant tutorials?

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  6. 17. sij

    Oster now supports string arguments :-)

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  7. 16. sij

    I guess this is also platform specific. This being on x86_64 .

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  8. 15. sij

    Fun fact: string arguments take up 16 bytes on the stack. 8 for the address of the character array, 8 for the length.

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  9. 9. sij

    Be sure to check out that sweet `--debug` flag to see the installed eBPF program. It's generated using Go's text/template package

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  10. 9. sij

    Open sourced my eBPF based tool for tracing Go programs. Features are minimal right now but go check it out and report bugs :-)

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  11. 7. sij

    Got it by importing `<linux/kernel.h`>. Thanks for nothing everybody!!! /s

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  12. 7. sij

    Anyone know if/how I can `sprintf` in an eBPF filter? Can't seem to import stdio.h which makes sense.

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  13. 5. sij

    Using Go's text templates for the first time. It's great for templating out eBPF programs. Open sourcing coming soon :eyes:

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  14. 4. sij

    Gonna be a good weekend heehee :-)

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  15. 20. pro 2019.

    Great post on Go pragmas by :

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  16. 20. pro 2019.

    Actually found a use case for the` go:noinline` pragma. I'm testing out using uprobes on go functions and wrote a bunch of simple programs that kept getting inline'd. Short blog post incoming.

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  17. 18. pro 2019.

    Alright, I figured out that you can traverse through the stack in eBPF off a uprobe and found the function arguments :-)

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  18. 18. pro 2019.

    Anyone who follows me successfully play with using bcc for attaching uprobes to functions in go binaries? Can't figure out what exactly the runtime is doing to the stack but shits fucked.

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  19. proslijedio/la je Tweet
    15. pro 2019.

    When I was little, I would look at the tabloids while standing in the grocery line. Aliens, reptilians, etc. Imagine if those idle glances changed the other content I saw in the world to be similar, in a continual feedback loop until everything around me was tabloid headlines.

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  20. 11. pro 2019.

    Using Karn for Seccomp Enforcement:

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