D54804.1790071861.diff
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D54804.1790071861.diff
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	diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c
	--- a/sys/kern/kern_ktrace.c
	+++ b/sys/kern/kern_ktrace.c
	@@ -373,11 +373,17 @@
	static void
	ktr_enqueuerequest(struct thread td, struct ktr_request req)
	{
	+ bool sched_ast;

	mtx_lock(&ktrace_mtx);
	- STAILQ_INSERT_TAIL(&td->td_proc->p_ktr, req, ktr_list);
	+ sched_ast = td->td_proc->p_ktrioparms != NULL;
	+ if (sched_ast)
	+ STAILQ_INSERT_TAIL(&td->td_proc->p_ktr, req, ktr_list);
	+ else
	+ ktr_freerequest_locked(req);
	mtx_unlock(&ktrace_mtx);
	- ast_sched(td, TDA_KTRACE);
	+ if (sched_ast)
	+ ast_sched(td, TDA_KTRACE);
	}

	/*