On Thu, Apr 27, 2023 at 8:36 AM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > > On Thu, 27 Apr 2023 23:23:31 +0800 > Yafang Shao <laoar.shao@xxxxxxxxx> wrote: > > > > But I thought you can run a bpf_prog from another bpf_prog. So you don't > > > want to prevent it. You need other logic to detect if it was not suppose to > > > recurs. > > > > > > > If so, we have to keep the prog->active to prevent it, then I'm not > > sure if it is worth adding test_recursion_*(). > > I thought that the whole point of this exercise was because the > migrate_disable() itself could be traced (or call something that can), and > that's outside of prog->active protection. Which the test_recursion_*() > code was created for. Not sure where did this come from. migrate_enable/disable were added to deny list back in 2021.
