diff --git a/0002-fix-coredump-in-bl_add_disk.patch b/0002-fix-coredump-in-bl_add_disk.patch
new file mode 100644
index 0000000000000000000000000000000000000000..beb277189c83199549d58a942c319cfc1647fb49
--- /dev/null
+++ b/0002-fix-coredump-in-bl_add_disk.patch
@@ -0,0 +1,44 @@
+From c7e995c8a4a3985d1b315814d29e8d9211d6dc5e Mon Sep 17 00:00:00 2001
+From: lixiaokeng <lixiaokeng@huawei.com>
+Date: Tue, 30 Nov 2021 16:38:02 +0800
+Subject: [PATCH 1/2] fix coredump in bl_add_disk
+
+The serial->data is not malloced separately, so it can't be freed.
+Just free(serial).
+
+Signed-off-by: Lixiaokeng <lixiaokeng@huawei.com>
+---
+ utils/blkmapd/device-discovery.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/utils/blkmapd/device-discovery.c b/utils/blkmapd/device-discovery.c
+index f5f9b10..2c50205 100644
+--- a/utils/blkmapd/device-discovery.c
++++ b/utils/blkmapd/device-discovery.c
+@@ -188,7 +188,6 @@ static void bl_add_disk(char *filepath)
+ 
+ 	if (disk && diskpath) {
+ 		if (serial) {
+-			free(serial->data);
+ 			free(serial);
+ 		}
+ 		return;
+@@ -229,7 +228,6 @@ static void bl_add_disk(char *filepath)
+ 			disk->valid_path = path;
+ 		}
+ 		if (serial) {
+-			free(serial->data);
+ 			free(serial);
+ 		}
+ 	}
+@@ -242,7 +240,6 @@ static void bl_add_disk(char *filepath)
+ 		free(path);
+ 	}
+ 	if (serial) {
+-		free(serial->data);
+ 		free(serial);
+ 	}
+ 	return;
+-- 
+2.26.1.windows.1
+
diff --git a/nfs-utils.spec b/nfs-utils.spec
index 66aacaff8be31d6486d9b6267c543dcf21d45388..3b863cc31bc756b9df18abac00843c6b2ab909cc 100644
--- a/nfs-utils.spec
+++ b/nfs-utils.spec
@@ -4,7 +4,7 @@
 
 Name:    nfs-utils
 Version: 2.5.1
-Release: 2
+Release: 4
 Epoch:   1
 Summary: The Linux NFS userland utility package
 License: MIT and GPLv2 and GPLv2+ and BSD
@@ -14,6 +14,7 @@ Source0: https://www.kernel.org/pub/linux/utils/nfs-utils/%{version}/%{name}-%{v
 
 Patch0:  0000-systemd-idmapd-require-rpc-pipefs.patch
 Patch1:  0001-correct-the-statd-path-in-man.patch
+Patch2:  0002-fix-coredump-in-bl_add_disk.patch
 
 BuildRequires: libevent-devel,libcap-devel, libtirpc-devel libblkid-devel
 BuildRequires: krb5-libs >= 1.4 autoconf >= 2.57 openldap-devel >= 2.2
@@ -222,6 +223,12 @@ fi
 %{_mandir}/*/*
 
 %changelog
+* Tue Nov 30 2021 yanglongkang <yanglongkang@huawei.com> - 2.5.1-4
+- fix nfs-blkmapd service core dump
+
+* Wed Nov 11 2020 lixiaokeng <lixiaokeng@huawei.com> - 2.5.1-3
+- add epoch to the version of help package required
+
 * Thu Dec 17 2020 yanglongkang <yanglongkang@huawei.com> - 2.5.1-2
 - set help package as install requires