On Wed, 8 Oct 2025 23:08:26 +0200 Jiri Olsa <[email protected]> wrote:
> hi, > I'm getting no stacktrace from bpf program attached on kretprobe.multi probe > (which means on top of return fprobe) on x86. > > I think we need some kind of treatment we do for rethook, AFAICS the ORC > unwind > stops on return_to_handler, because the stack and the function itself are not > adjusted for unwind_recover_ret_addr call > > If it's any help I pushed the bpf/selftest for that in here: > > https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/log/?h=stacktrace_test > > just execute: > # test_progs -t stacktrace_map/kretprobe_multi Hmm, curious. as far as we are using fgraph, stacktrace should work. May this happen if function-graph tracer is enabled too? Thank you, > > thanks, > jirka -- Masami Hiramatsu (Google) <[email protected]>
