diff --git a/0027--nvme-cuse-Add-ctrlr_lock-for-cuse-register-and-unreg.patch b/0027--nvme-cuse-Add-ctrlr_lock-for-cuse-register-and-unreg.patch
new file mode 100644
index 0000000..06ac0d7
--- /dev/null
+++ b/0027--nvme-cuse-Add-ctrlr_lock-for-cuse-register-and-unreg.patch
@@ -0,0 +1,98 @@
+From 253cca4fc3a89c38e79d2e940c5a0b7bb082afcc Mon Sep 17 00:00:00 2001
+From: Zhanghongtao2417 <651380626@qq.com>
+Date: Fri, 26 Apr 2024 22:01:25 +0800
+Subject: [PATCH] nvme/cuse: Add ctrlr_lock for cuse register and unregister
+
+conflicts:
+lib/nvme/nvme_io_msg.c  nvme_io_msg_ctrlr_update
+
+spdk_nvme_cuse_unregister and spdk_nvme_ctrlr_process_admin_completions
+ running at the same time, concurrently operate external_io_msgs.
+So we add locks to protect.
+
+Fixes #3353
+
+Change-Id: Id5176975676c29a475e8e2a0d7c93e44646c00dc
+Signed-off-by: Zhanghongtao2417 <651380626@qq.com>
+Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/22927
+Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
+Community-CI: Mellanox Build Bot
+Reviewed-by: Jim Harris <jim.harris@samsung.com>
+Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
+---
+ lib/nvme/nvme_io_msg.c | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/lib/nvme/nvme_io_msg.c b/lib/nvme/nvme_io_msg.c
+index 94c4d071c..e11e67c85 100644
+--- a/lib/nvme/nvme_io_msg.c
++++ b/lib/nvme/nvme_io_msg.c
+@@ -111,13 +111,16 @@ nvme_io_msg_ctrlr_register(struct spdk_nvme_ctrlr *ctrlr,
+ 		return -EINVAL;
+ 	}
+ 
++	nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);
+ 	if (nvme_io_msg_is_producer_registered(ctrlr, io_msg_producer)) {
++		nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ 		return -EEXIST;
+ 	}
+ 
+ 	if (!STAILQ_EMPTY(&ctrlr->io_producers) || ctrlr->is_resetting) {
+ 		/* There are registered producers - IO messaging already started */
+ 		STAILQ_INSERT_TAIL(&ctrlr->io_producers, io_msg_producer, link);
++		nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ 		return 0;
+ 	}
+ 
+@@ -129,6 +132,7 @@ nvme_io_msg_ctrlr_register(struct spdk_nvme_ctrlr *ctrlr,
+ 	ctrlr->external_io_msgs = spdk_ring_create(SPDK_RING_TYPE_MP_SC, 65536, SPDK_ENV_SOCKET_ID_ANY);
+ 	if (!ctrlr->external_io_msgs) {
+ 		SPDK_ERRLOG("Unable to allocate memory for message ring\n");
++		nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ 		return -ENOMEM;
+ 	}
+ 
+@@ -137,10 +141,12 @@ nvme_io_msg_ctrlr_register(struct spdk_nvme_ctrlr *ctrlr,
+ 		SPDK_ERRLOG("spdk_nvme_ctrlr_alloc_io_qpair() failed\n");
+ 		spdk_ring_free(ctrlr->external_io_msgs);
+ 		ctrlr->external_io_msgs = NULL;
++		nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ 		return -ENOMEM;
+ 	}
+ 
+ 	STAILQ_INSERT_TAIL(&ctrlr->io_producers, io_msg_producer, link);
++	nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ 
+ 	return 0;
+ }
+@@ -156,9 +162,11 @@ nvme_io_msg_ctrlr_update(struct spdk_nvme_ctrlr *ctrlr)
+ 	struct nvme_io_msg_producer *io_msg_producer;
+ 
+ 	/* Update all producers */
++	nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);
+ 	STAILQ_FOREACH(io_msg_producer, &ctrlr->io_producers, link) {
+ 		io_msg_producer->update(ctrlr);
+ 	}
++	nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ }
+ 
+ void
+@@ -195,7 +203,9 @@ nvme_io_msg_ctrlr_unregister(struct spdk_nvme_ctrlr *ctrlr,
+ {
+ 	assert(io_msg_producer != NULL);
+ 
++	nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);
+ 	if (!nvme_io_msg_is_producer_registered(ctrlr, io_msg_producer)) {
++		nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ 		return;
+ 	}
+ 
+@@ -203,4 +213,5 @@ nvme_io_msg_ctrlr_unregister(struct spdk_nvme_ctrlr *ctrlr,
+ 	if (STAILQ_EMPTY(&ctrlr->io_producers)) {
+ 		nvme_io_msg_ctrlr_detach(ctrlr);
+ 	}
++	nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
+ }
+-- 
+2.33.0
+
diff --git a/spdk.spec b/spdk.spec
index 8857cbb..64e779c 100644
--- a/spdk.spec
+++ b/spdk.spec
@@ -3,7 +3,7 @@
 
 Name: spdk
 Version: 21.01.1
-Release: 13
+Release: 14
 Summary: Set of libraries and utilities for high performance user-mode storage
 License: BSD and MIT
 URL: http://spdk.io
@@ -34,6 +34,7 @@ Patch23: 0023-Fix-probe-core-dump-while-admin-cmd-timeout.patch
 Patch24: 0024-Fix-build-warning.patch
 Patch25: 0025-ut-rdma-Fix-GCC-10.2.0-warning.patch
 Patch26: 0026-lib-nvme-add-mutex-before-submit-admin-request.patch
+Patch27: 0027--nvme-cuse-Add-ctrlr_lock-for-cuse-register-and-unreg.patch
 
 %define package_version %{version}-%{release}
 
@@ -204,6 +205,9 @@ mv doc/output/html/ %{install_docdir}
 
 
 %changelog
+* Mon May 20 2024 Hongtao Zhang <zhanghongtao22@huawei.com> - 21.01.1-14
+- nvme/cuse: Add ctrlr_lock for cuse register and unregister
+
 * Mon Apr 29 2024 Hongtao Zhang <zhanghongtao22@huawei.com> - 21.01.1-13
 - lib/nvme: add mutex before submit admin request