D58327.diff
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	diff --git a/sys/kern/sys_procdesc.c b/sys/kern/sys_procdesc.c
	--- a/sys/kern/sys_procdesc.c
	+++ b/sys/kern/sys_procdesc.c
	@@ -493,16 +493,25 @@
	procdesc_kqops_event(struct knote *kn, long hint)
	{
	struct procdesc *pd;
	+ struct proc *p;
	u_int event;

	pd = kn->kn_fp->f_data;
	if (hint == 0) {
	/*
	* Initial test after registration. Generate notes in
	- * case the process already terminated before registration.
	+ * case the process already terminated before
	+ * registration, or is stopped, or traced, with an event
	+ * pending.
	*/
	- event = (pd->pd_flags & PDF_EXITED) != 0 ? (NOTE_EXIT \|
	- NOTE_PDSIGCHLD) : 0;
	+ p = pd->pd_proc;
	+ if ((pd->pd_flags & PDF_EXITED) != 0)
	+ event = NOTE_EXIT \| NOTE_PDSIGCHLD;
	+ else if ((atomic_load_int(&p->p_flag) & (P_STOPPED_SIG \|
	+ P_STOPPED_TRACE)) != 0)
	+ event = NOTE_PDSIGCHLD;
	+ else
	+ event = 0;
	} else {
	/* Mask off extra data. */
	event = (u_int)hint & NOTE_PCTRLMASK;