Re: [PATCH 1/1] ptrace: do_notify_parent_cldstop: fix the wrong->nsproxy usage

[Oleg Nesterov]

On 05/27, Roland McGrath wrote:
>
> > Actually, ptrace_signal() is fine wrt pid_ns. task_pid_vnr(current->parent)
> > returns 0 if the tracer is not seen from the tracee's namespace, this is
> > correct. So, afaics only ptrace_notify() needs the (low priority) fix.
>
> Oh, both are correct.  Sorry.  These are signals received by tracee, which
> is current, so task_pid_vnr() dtrt.

No, task_pid_vnr(current) in ptrace_notify() is not right. If the tracer
does PTRACE_GETSIGINFO it gets the wrong .si_pid.

Oleg.

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