From e6901a29bc4345f12e9c85426cc2be81045020a6 Mon Sep 17 00:00:00 2001
From: Ashish SHUKLA <ashish@FreeBSD.org>
Date: Tue, 30 Aug 2022 08:18:51 +0000
Subject: [PATCH] kvm_close(3): Check kd->sparse_map != NULL before munmap

PR:		266113
Reviewed by:	markj
---
 lib/libkvm/kvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libkvm/kvm.c b/lib/libkvm/kvm.c
index b98f2f25e619..4b886171a7d6 100644
--- a/lib/libkvm/kvm.c
+++ b/lib/libkvm/kvm.c
@@ -303,7 +303,7 @@ kvm_close(kvm_t *kd)
 		free(kd->pt_map);
 	if (kd->page_map != NULL)
 		free(kd->page_map);
-	if (kd->sparse_map != MAP_FAILED)
+	if (kd->sparse_map != MAP_FAILED && kd->sparse_map != NULL)
 		munmap(kd->sparse_map, kd->pt_sparse_size);
 	free((void *)kd);