On Wed, Nov 14, 2018 at 06:36:11PM +0100, Oleg Nesterov wrote: > On 11/14, Roman Gushchin wrote: > > > > > No, this is very wrong. Just suppose the caller is killed right before > > > clear_thread_flag(TIF_SIGPENDING). > > > > So, I had TASK_KILLABLE before, but had some issues with ptrace/gdb. > > I'll revisit this option. > > Yes, ptrace_signal_wake_up() won't wake a TASK_KILLABLE tracee up... > > BTW. Could you explain in the changelog how should a frozen task interact > with ptrace? 0/6 says "ptrace works" but that is all. It is not clear to me > what do we actually want wrt ptrace... Sure, will add. Basically, I want some minimal functionality to work properly. E.g. attach to a frozen task, get some info, detach.
