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jarkko

Jarkko Sakkinen

Great I get in my “hello bpf” truncated stacks delivered through a ringbuf:

❯ sudo build/hello-ebpf
[0]: 0xffffa5c74e6e9498
[1]: 0x0000000000000000
[2]: 0x0000000000000000
[3]: 0x0000000000000000
[4]: 0x0000000000000000
[5]: 0x0000000000000000
[6]: 0x0000000000000000
[7]: 0x0000000000000000

It looks like this because I temporarily hooked kprobe to a syscall. Next I change the hook to tpm_transmit.

I do all post-processing from this at the host.

#linux #kernel #bpf #profiler

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