Re: [PATCH 1/1] ptrace: make sure do_wait() won't hang afterPTRACE_ATTACH

From: Oleg Nesterov
Date: Mon Feb 28 2011 - 11:57:19 EST

On 02/28, Tejun Heo wrote:
> I believe this is already solved by making the tracee always enter
> TASK_TRACED via ptrace_stop() on attach, which always reports the
> group stop signal to the ptracer whether the real parent has consumed
> it or not. The patch is at the top of this gigantic thread. Oleg,
> this is solved one, right?

Yes, sure. gdb will never see the stopped (I mean task->state) tracee
after attach, so it does not need to do something special. This problem
with exit_code == 0 is fixed too.


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