On 01/04, Jamie Iles wrote: > > This can result in init becoming stoppable/killable after tracing. For > example, running: > > while true; do kill -STOP 1; done & > strace -p 1 > > and then stopping strace and the kill loop will result in init being > left in state TASK_STOPPED. Sending SIGCONT to init will resume it, but > init will now respond to future SIGSTOP signals rather than ignoring > them.
and to SIGKILL. Another problem is that /sbin/init should ignore SIGKILL even when ptraced, but this needs another patch, will try to do tomorrow. And yet another problem with force_sig(), it should probably take ptrace and/or SIGTRAP into account. Thanks Jamie, Acked-by: Oleg Nesterov <o...@redhat.com>
