Messages in this thread | | | Date | Tue, 15 Feb 2011 16:24:48 +0100 | From | Tejun Heo <> | Subject | Re: [PATCH 1/1] ptrace: make sure do_wait() won't hang after PTRACE_ATTACH |
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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?
Thanks.
-- tejun
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