On Sun, Oct 17, 2021 at 10:46 PM Dongliang Mu <mudongliangabcd@gmail.com> wrote:

Hi all,

I am writing to kindly ask one question: is there any tracing
mechanism in Linux kernel that can trace all the executed instructions
of a user process?

Use gdb -p <pid> to attach to the process your interested in

The gdb command: display/i $pc shows you the instruction before it executes. display $pc shows the line of code before n or s executes it.

If this user process is run on different
processors, traces of this process on different processors should be
also recorded.

This am not too sure about, someone more knowledgeable will probably let us know ( Valdis ? )

Any comment is welcome.

--
My best regards to you.

No System Is Safe!
Dongliang Mu

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