D59349.diff
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	diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c
	--- a/sys/kern/kern_fork.c
	+++ b/sys/kern/kern_fork.c
	@@ -91,6 +91,11 @@
	SDT_PROVIDER_DECLARE(proc);
	SDT_PROBE_DEFINE3(proc, , , create, "struct proc ", "struct proc ", "int");

	+static bool pdfork_implicit_nowaitpid;
	+SYSCTL_BOOL(_kern, OID_AUTO, pdfork_implicit_nowaitpid, CTLFLAG_RWTUN,
	+ &pdfork_implicit_nowaitpid, 0,
	+ "PD_NOWAITPID is assumed to be always set");
	+
	#ifndef _SYS_SYSPROTO_H_
	struct fork_args {
	int dummy;
	@@ -560,7 +565,8 @@
	P2_LOGSIGEXIT_ENABLE);
	if ((fr->fr_flags & RFPROCDESC) != 0) {
	p2->p_zombieref = PZOMBIEREF_PROCDESC;
	- if ((fr->fr_pd_flags & PD_NOWAITPID) == 0 &&
	+ if (((fr->fr_pd_flags & PD_NOWAITPID) == 0 &&
	+ !pdfork_implicit_nowaitpid) &&
	(fr->fr_flags & RFNOWAIT) == 0)
	p2->p_zombieref \|= (PZOMBIEREF_PARENT \|
	PZOMBIEREF_NEEDPARENT);