On 03/19, qianli zhao wrote: > > > But then I don't understand the SIGNAL_GROUP_EXIT check added by your > > patch. Do we really need it if we want to avoid zap_pid_ns_processes() > > when the global init exits? > > I think check SIGNAL_GROUP_EXIT is necessary,or panic() will happen > after all init sub-threads do_exit(),so the following two situations > will happen: > 1.According to the timing in the changelog, > zap_pid_ns_processes()->BUG() maybe happened.
How? Perhaps I missed something again, but I don't think this is possible. zap_pid_ns_processes() simply won't be called, find_child_reaper() will see the !PF_EXITING thread which calls panic(). So I think this should be documented somehow, at least in the changelog. Oleg.
