From e0cd43fe10732fee98e49dcb194f13ded2d5b660 Mon Sep 17 00:00:00 2001
From: Robert Mustacchi <rm@fingolfin.org>
Date: Fri, 12 Nov 2021 08:50:12 -0800
Subject: 14365 memlist_insert() throws memlists away with empty lists Reviewed
 by: Jason King <jason.brian.king@gmail.com> Reviewed by: Toomas Soome
 <tsoome@me.com> Approved by: Dan McDonald <danmcd@joyent.com>

---
 usr/src/uts/common/os/memlist_new.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'usr/src')

diff --git a/usr/src/uts/common/os/memlist_new.c b/usr/src/uts/common/os/memlist_new.c
index adef7cb015..eaa23ed24e 100644
--- a/usr/src/uts/common/os/memlist_new.c
+++ b/usr/src/uts/common/os/memlist_new.c
@@ -143,13 +143,17 @@ memlist_insert(
 	}
 	new->ml_next = NULL;
 	new->ml_prev = last;
-	if (last != NULL)
+	if (last != NULL) {
 		last->ml_next = new;
+	} else {
+		ASSERT3P(*curmemlistp, ==, NULL);
+		*curmemlistp = new;
+	}
 }
 
 void
 memlist_del(struct memlist *memlistp,
-	struct memlist **curmemlistp)
+    struct memlist **curmemlistp)
 {
 #ifdef DEBUG
 	/*
-- 
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