diff --git a/lib/libshare/os/freebsd/nfs.c b/lib/libshare/os/freebsd/nfs.c
index f11e77b849..b0394dfab0 100644
--- a/lib/libshare/os/freebsd/nfs.c
+++ b/lib/libshare/os/freebsd/nfs.c
@@ -65,17 +65,22 @@ static int nfs_lock_fd = -1;
 static int
 nfs_exports_lock(void)
 {
+	int err;
+
 	nfs_lock_fd = open(ZFS_EXPORTS_LOCK,
 	    O_RDWR | O_CREAT | O_CLOEXEC, 0600);
 	if (nfs_lock_fd == -1) {
+		err = errno;
 		fprintf(stderr, "failed to lock %s: %s\n",
-		    ZFS_EXPORTS_LOCK, strerror(errno));
-		return (errno);
+		    ZFS_EXPORTS_LOCK, strerror(err));
+		return (err);
 	}
 	if (flock(nfs_lock_fd, LOCK_EX) != 0) {
+		err = errno;
 		fprintf(stderr, "failed to lock %s: %s\n",
-		    ZFS_EXPORTS_LOCK, strerror(errno));
-		return (errno);
+		    ZFS_EXPORTS_LOCK, strerror(err));
+		(void) close(nfs_lock_fd);
+		return (err);
 	}
 	return (0);
 }
diff --git a/lib/libshare/os/linux/nfs.c b/lib/libshare/os/linux/nfs.c
index 21d52953fa..a7bcbd1385 100644
--- a/lib/libshare/os/linux/nfs.c
+++ b/lib/libshare/os/linux/nfs.c
@@ -65,17 +65,22 @@ static int nfs_lock_fd = -1;
 static int
 nfs_exports_lock(void)
 {
+	int err;
+
 	nfs_lock_fd = open(ZFS_EXPORTS_LOCK,
 	    O_RDWR | O_CREAT | O_CLOEXEC, 0600);
 	if (nfs_lock_fd == -1) {
+		err = errno;
 		fprintf(stderr, "failed to lock %s: %s\n",
-		    ZFS_EXPORTS_LOCK, strerror(errno));
-		return (errno);
+		    ZFS_EXPORTS_LOCK, strerror(err));
+		return (err);
 	}
 	if (flock(nfs_lock_fd, LOCK_EX) != 0) {
+		err = errno;
 		fprintf(stderr, "failed to lock %s: %s\n",
-		    ZFS_EXPORTS_LOCK, strerror(errno));
-		return (errno);
+		    ZFS_EXPORTS_LOCK, strerror(err));
+		(void) close(nfs_lock_fd);
+		return (err);
 	}
 	return (0);
 }