From 6b2e7203ae5c90fb9fb1ef353fdc18372f36d11f Mon Sep 17 00:00:00 2001
From: Alan Somers <asomers@FreeBSD.org>
Date: Tue, 26 Jan 2021 20:39:28 -0700
Subject: [PATCH] Fix a resource leak in uu_avl_pool_destroy

Need to destroy the pthread mutex created in uu_avl_pool_create.

https://svnweb.freebsd.org/base?view=revision&revision=262912

Obtained from: FreeBSD
Sponsored by:	Spectra Logic Corporation
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alan Somers <asomers@gmail.com>
Closes #11528
---
 lib/libuutil/uu_avl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/libuutil/uu_avl.c b/lib/libuutil/uu_avl.c
index 040008883a..53def0e073 100644
--- a/lib/libuutil/uu_avl.c
+++ b/lib/libuutil/uu_avl.c
@@ -128,6 +128,7 @@ uu_avl_pool_destroy(uu_avl_pool_t *pp)
 	pp->uap_next->uap_prev = pp->uap_prev;
 	pp->uap_prev->uap_next = pp->uap_next;
 	(void) pthread_mutex_unlock(&uu_apool_list_lock);
+	(void) pthread_mutex_destroy(&pp->uap_lock);
 	pp->uap_prev = NULL;
 	pp->uap_next = NULL;
 	uu_free(pp);