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SubjectRe: [PATCH 1/4] signal: fix SIGCONT notification code
On Wed, 22 Dec 2010 12:13:15 +0100, Tejun Heo wrote:
> If SIGCONT is received while the child process is stopped, the code should
> be CLD_CONTINUED. If SIGCONT is recieved while the child process is in the
> process of being stopped, it should be CLD_STOPPED.

If a process does
kill (PID, SIGSTOP);
<varying delay, possibly even from a different process>
kill (PID, SIGCONT);

does it mean the PID's parent may get different waitid() results?
Or even that PID will finally remain still `T (stopped)'?

I do not see it has any userland impact, the
PTRACE_ATTACH-to-T(stopped)-process is already racy for different reasons.


Thanks,
Jan


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