On 04/06, Matt Helsley wrote: > > On Mon, Apr 05, 2010 at 08:44:43PM -0700, Roland McGrath wrote: > > > tracehook_report_clone_complete() call is made when that task_struct is no > > longer guaranteed to be valid. Hmm. I missed this. > Also, if utrace allows multiple tracers and they each > exist in a different namespace then storing a pid nr isn't going to work. Yes, but utrace is simple. ptrace_report_clone() does ctx->eventmsg = child->pid; we should fix this line and that is all, afaics. Every tracer has a separate "struct ptrace_context *ctx". > So my hunch is, in the long run, we'll need to hold a reference there and > drop it when the last tracer detaches Without utrace only one tracer is possible. So, I think we should either change do_fork() to get the right tracee_pid_nr, or add get/put into do_fork() and change tracehooks as Roland suggested. Oleg. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
