diff --git a/0034-librdmacm-Fix-an-overflow-bug-in-qsort-comparison-function.patch b/0034-librdmacm-Fix-an-overflow-bug-in-qsort-comparison-function.patch
new file mode 100644
index 0000000000000000000000000000000000000000..787c73f1f33ee9af25f700ed6312b0db43bdfb88
--- /dev/null
+++ b/0034-librdmacm-Fix-an-overflow-bug-in-qsort-comparison-function.patch
@@ -0,0 +1,36 @@
+From c4a5ac8bba611206e062c0955fb605bfc0f48b0f Mon Sep 17 00:00:00 2001
+From: Mark Zhang <markzhang@nvidia.com>
+Date: Fri, 26 Apr 2024 14:17:55 +0300
+Subject: [PATCH] librdmacm: Fix an overflow bug in qsort comparison function
+
+Reference: https://github.com/linux-rdma/rdma-core/commit/c4a5ac8bba611206e062c0955fb605bfc0f48b0f
+
+The comparison function dev_cmp() doesn't work with 64b pointers in some
+cases, as it casts the pointer to int. For example it's not able to sort
+this list:
+  {0xfffe0c2f0b00, 0xaaac741b4a90, 0xaaac741b4d70}
+
+Fixes: e5d371cb0af0 ("librdmacm: Globally store and sort IB device list")
+Signed-off-by: Mark Zhang <markzhang@nvidia.com>
+Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
+Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
+---
+ librdmacm/cma.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/librdmacm/cma.c b/librdmacm/cma.c
+index 7b924bd..0a631bd 100644
+--- a/librdmacm/cma.c
++++ b/librdmacm/cma.c
+@@ -311,7 +311,7 @@ static void remove_cma_dev(struct cma_device *cma_dev)
+ 
+ static int dev_cmp(const void *a, const void *b)
+ {
+-	return (int)(*(char *const *)a - *(char *const *)b);
++	return (*(uintptr_t *)a > *(uintptr_t *)b) - (*(uintptr_t *)a < *(uintptr_t *)b);
+ }
+ 
+ static int sync_devices_list(void)
+-- 
+2.27.0
+
diff --git a/rdma-core.spec b/rdma-core.spec
index fc16708df510de45b0661f2c8b7fc4ea7c58f6e5..5f9130e8ab2e45800d56a43a78a75c77ead4e021 100644
--- a/rdma-core.spec
+++ b/rdma-core.spec
@@ -1,6 +1,6 @@
 Name:           rdma-core
 Version:        50.0
-Release:        10
+Release:        11
 Summary:        RDMA core userspace libraries and daemons
 License:        GPLv2 or BSD
 Url:            https://github.com/linux-rdma/rdma-core
@@ -39,6 +39,7 @@ patch30: 0030-libhns-Remove-unused-return-value.patch
 patch31: 0031-libhns-Fix-several-context-locks-issue.patch
 patch32: 0032-libhns-Clean-up-signed-unsigned-mix-with-relational-.patch
 patch33: 0033-libhns-Fix-missing-flag-when-creating-qp-by-hnsdv_cr.patch
+patch34: 0034-librdmacm-Fix-an-overflow-bug-in-qsort-comparison-function.patch
 
 BuildRequires:  binutils cmake >= 2.8.11 gcc libudev-devel pkgconfig pkgconfig(libnl-3.0)
 BuildRequires:  pkgconfig(libnl-route-3.0) systemd systemd-devel
@@ -621,6 +622,12 @@ fi
 %doc %{_docdir}/%{name}-%{version}/70-persistent-ipoib.rules
 
 %changelog
+* Fri May 24 zhangyaqi <zhangyaqi@kylinos.cn> - 50.0-11
+- Type: bugfix
+- ID: NA
+- SUG: NA
+- DESC: Fix an overflow bug in qsort comparison function
+
 * Sun May 12 2024 yinsist <jianhui.oerv@isrc.iscas.ac.cn> - 50.0-10
 - Type: requirement
 - ID: NA