On Mon, Oct 18, 2021 at 04:41:14PM +0800, Dongliang Mu wrote: > On Mon, Oct 18, 2021 at 4:07 PM FMDF <fmdefrancesco@xxxxxxxxx> wrote: > > > > On Mon, 18 Oct 2021, 04:46 Dongliang Mu, <mudongliangabcd@xxxxxxxxx> 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? If this user process is run on different > >> processors, traces of this process on different processors should be > >> also recorded. > > > > > > You've not explained in detail what is the purpose of the tracing that you want to do. Missing this information I can only provide you a list of links to various tools and methods. Take a look by yourself and try to figure out what is better suited for your needs... > > I want to log all the executed instructions of a user process (e.g., > poc.c in syzkaller) in the kernel mode and then would like to leverage > backward analysis to capture the root cause of kernel panic/crash. > > Therefore, I need the instruction-level tracing mechanisms or tools. Then use a userspace debugger like gdb, that is what they are designed for. good luck! greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
