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    SubjectRe: [PATCH 1/1] ptrace: make sure do_wait() won't hang after PTRACE_ATTACH
    Hello, Oleg, Denys.

    On Mon, Feb 14, 2011 at 09:01:30PM +0100, Oleg Nesterov wrote:
    > > Or we can avoid entering TASK_TRACED on ptrace(PTRACE_GETSIGINFO) et al.
    > > Can we remain in TASK_STOPPED?
    > Oh, unlikely, I think.

    Actually I was thinking along this line. We can allow
    PTRACE_GETSIGINFO to proceed without forcing the tracee into TRACED
    state, the rationale being the operation is required to tell between
    group stop and ptrace trap. Am I missing something?



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