diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
index 85f6098d82ff..39668027e2b5 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
@@ -273,6 +273,15 @@ cksummer(void *arg)
 	ofp = fdopen(dda->inputfd, "r");
 	while (ssread(drr, sizeof (*drr), ofp) != 0) {
 
+		/*
+		 * kernel filled in checksum, we are going to write same
+		 * record, but need to regenerate checksum.
+		 */
+		if (drr->drr_type != DRR_BEGIN) {
+			bzero(&drr->drr_u.drr_checksum.drr_checksum,
+			    sizeof (drr->drr_u.drr_checksum.drr_checksum));
+		}
+
 		switch (drr->drr_type) {
 		case DRR_BEGIN:
 		{
diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c
index 6766083841c9..b1863bead51b 100644
--- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c
+++ b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c
@@ -94,7 +94,7 @@
 extern int zfs_ioctl_version;
 #endif
 
-static int g_fd;
+static int g_fd = -1;
 static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
 static int g_refcount;
 
@@ -120,9 +120,14 @@ libzfs_core_fini(void)
 {
 	(void) pthread_mutex_lock(&g_lock);
 	ASSERT3S(g_refcount, >, 0);
-	g_refcount--;
-	if (g_refcount == 0)
+
+	if (g_refcount > 0)
+		g_refcount--;
+
+	if (g_refcount == 0 && g_fd != -1) {
 		(void) close(g_fd);
+		g_fd = -1;
+	}
 	(void) pthread_mutex_unlock(&g_lock);
 }
 
@@ -139,6 +144,7 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name,
 	size_t size;
 
 	ASSERT3S(g_refcount, >, 0);
+	VERIFY3S(g_fd, !=, -1);
 
 	(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
 
@@ -411,6 +417,9 @@ lzc_exists(const char *dataset)
 	 */
 	zfs_cmd_t zc = { 0 };
 
+	ASSERT3S(g_refcount, >, 0);
+	VERIFY3S(g_fd, !=, -1);
+
 	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
 	return (ioctl(g_fd, ZFS_IOC_OBJSET_STATS, &zc) == 0);
 }
@@ -656,6 +665,7 @@ recv_impl(const char *snapname, nvlist_t *props, const char *origin,
 	int error;
 
 	ASSERT3S(g_refcount, >, 0);
+	VERIFY3S(g_fd, !=, -1);
 
 	/* zc_name is name of containing filesystem */
 	(void) strlcpy(zc.zc_name, snapname, sizeof (zc.zc_name));