diff --git a/backport-pid1-cgroup-show-ignore-EOPNOTSUPP-in-cg_read_pid.patch b/backport-pid1-cgroup-show-ignore-EOPNOTSUPP-in-cg_read_pid.patch
new file mode 100644
index 0000000000000000000000000000000000000000..6ee9e347024ec2da70d287007f4502e798f62523
--- /dev/null
+++ b/backport-pid1-cgroup-show-ignore-EOPNOTSUPP-in-cg_read_pid.patch
@@ -0,0 +1,86 @@
+From 9029ab8ae01f315cc9ce795ad52e09013e10d893 Mon Sep 17 00:00:00 2001
+From: Yu Watanabe <watanabe.yu+github@gmail.com>
+Date: Thu, 13 Jan 2022 00:09:38 +0900
+Subject: [PATCH] pid1,cgroup-show: ignore -EOPNOTSUPP in cg_read_pid()
+
+The function is called in recursion, and cgroup.procs in some subcgroups
+may not be read.
+
+Fixes #22089.
+
+Reference: https://github.com/systemd/systemd/pull/22095/commits/c41911ce12d23d28b090b51c200db1e1e8ee7ce7
+
+Signed-off-by: zhaoxiaohu <zhaoxiaohu@kuaishou.com>
+Signed-off-by: yuwang <yuwang@kuaishou.com>
+---
+ src/core/dbus-unit.c     |  8 ++++++--
+ src/shared/cgroup-show.c | 17 ++++++++++++-----
+ 2 files changed, 18 insertions(+), 7 deletions(-)
+
+diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
+index 24e4d25..0640d3e 100644
+--- a/src/core/dbus-unit.c
++++ b/src/core/dbus-unit.c
+@@ -1295,11 +1295,15 @@ static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
+         for (;;) {
+                 pid_t pid;
+ 
++                /* libvirt / qemu uses threaded mode and cgroup.procs cannot be read at the lower levels.
++                 * From https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#threads,
++                 * “cgroup.procs” in a threaded domain cgroup contains the PIDs of all processes in
++                 * the subtree and is not readable in the subtree proper. */
+                 r = cg_read_pid(f, &pid);
++                if (IN_SET(r, 0, -EOPNOTSUPP))
++                        break;
+                 if (r < 0)
+                         return r;
+-                if (r == 0)
+-                        break;
+ 
+                 if (is_kernel_thread(pid) > 0)
+                         continue;
+diff --git a/src/shared/cgroup-show.c b/src/shared/cgroup-show.c
+index c7e63be..c324652 100644
+--- a/src/shared/cgroup-show.c
++++ b/src/shared/cgroup-show.c
+@@ -86,7 +86,6 @@ static int show_cgroup_one_by_path(
+         _cleanup_fclose_ FILE *f = NULL;
+         _cleanup_free_ char *p = NULL;
+         size_t n = 0;
+-        pid_t pid;
+         char *fn;
+         int r;
+ 
+@@ -99,7 +98,18 @@ static int show_cgroup_one_by_path(
+         if (!f)
+                 return -errno;
+ 
+-        while ((r = cg_read_pid(f, &pid)) > 0) {
++        for (;;) {
++                pid_t pid;
++
++                /* libvirt / qemu uses threaded mode and cgroup.procs cannot be read at the lower levels.
++                 * From https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#threads,
++                 * “cgroup.procs” in a threaded domain cgroup contains the PIDs of all processes in
++                 * the subtree and is not readable in the subtree proper. */
++                r = cg_read_pid(f, &pid);
++                if (IN_SET(r, 0, -EOPNOTSUPP))
++                        break;
++                if (r < 0)
++                        return r;
+ 
+                 if (!(flags & OUTPUT_KERNEL_THREADS) && is_kernel_thread(pid) > 0)
+                         continue;
+@@ -110,9 +120,6 @@ static int show_cgroup_one_by_path(
+                 pids[n++] = pid;
+         }
+ 
+-        if (r < 0)
+-                return r;
+-
+         show_pid_array(pids, n, prefix, n_columns, false, more, flags);
+ 
+         return 0;
+-- 
+2.33.0
+
diff --git a/systemd.spec b/systemd.spec
index 83baf0c9a94f7c60573cc39725592000b7fbbdf0..c22625bd1d3aa9955ea197d3cf4b18cf216740c9 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -25,7 +25,7 @@
 Name:           systemd
 Url:            https://systemd.io/
 Version:        249
-Release:        93
+Release:        94
 License:        MIT and LGPLv2+ and GPLv2+
 Summary:        System and Service Manager
 
@@ -696,6 +696,7 @@ Patch6643:      backport-importd-Always-specify-file-unpacked-by-tar.patch
 Patch6644:      backport-docs-remove-dev-tty-confusion.patch
 Patch6645:      backport-wait-online-make-manager_link_is_online-return-0-whe.patch
 Patch6646:      backport-psi-util-fix-error-handling.patch
+Patch6647:      backport-pid1-cgroup-show-ignore-EOPNOTSUPP-in-cg_read_pid.patch
 
 Patch9001:      update-rtc-with-system-clock-when-shutdown.patch
 Patch9002:      udev-add-actions-while-rename-netif-failed.patch
@@ -2210,6 +2211,9 @@ grep -q -E '^KEYMAP="?fi-latin[19]"?' /etc/vconsole.conf 2>/dev/null &&
 /usr/bin/systemd-cryptenroll
 
 %changelog
+* Wed Dec 04 2024 zhangyao <zhangyao108@huawei.com> - 249-94
+- add backport-pid1-cgroup-show-ignore-EOPNOTSUPP-in-cg_read_pid.patch
+
 * Wed Dec 04 2024 zhangyao <zhangyao108@huawei.com> - 249-93
 - add backport-psi-util-fix-error-handling.patch