Index: bpf.c
===================================================================
RCS file: /cvs/src/sys/net/bpf.c,v
retrieving revision 1.209
diff -u -p -r1.209 bpf.c
--- bpf.c	13 Jan 2022 14:15:27 -0000	1.209
+++ bpf.c	13 Jan 2022 22:14:35 -0000
@@ -566,18 +566,23 @@ out:
 void
 bpf_wakeup(struct bpf_d *d)
 {
+	struct klist *klist;
+
 	MUTEX_ASSERT_LOCKED(&d->bd_mtx);
 
 	if (d->bd_nreaders)
 		wakeup(d);
 
+	klist = &d->bd_sel.si_note;
+	if (!klist_empty(klist))
+		knote(klist, NOTE_SUBMIT);
+
 	/*
 	 * As long as pgsigio() and selwakeup() need to be protected
 	 * by the KERNEL_LOCK() we have to delay the wakeup to
 	 * another context to keep the hot path KERNEL_LOCK()-free.
 	 */
-	if ((d->bd_async && d->bd_sig) ||
-	    (!klist_empty(&d->bd_sel.si_note) || d->bd_sel.si_seltid != 0)) {
+	if ((d->bd_async && d->bd_sig) || d->bd_sel.si_seltid != 0) {
 		bpf_get(d);
 		if (!task_add(systq, &d->bd_wake_task))
 			bpf_put(d);