Guenter Roeck <li...@roeck-us.net> writes: > > I think you nailed it. If I drop CLONE_NEWPID from the reproducer I get > a zombie process. > > I guess the only question left is if zap_pid_ns_processes() should (or could) > somehow detect that situation and return instead of waiting forever. > What do you think ?
Any chance you can point me at the chromium code that is performing the ptrace? I want to conduct a review of the kernel semantics to see if the current semantics make it unnecessarily easy to get into hang situations. If the semantics make it really easy to get into a hang situation I want to see if there is anything we can do to delicately change the semantics to avoid the hangs without breaking existing userspace. We have a real problem in exec which has similar semantics and as long as I am looking at one I figure I should look at the other. Eric
