diff --git a/0001-Revert-hashmap-make-sure-to-initialize-shared-hash-k.patch b/0001-Revert-hashmap-make-sure-to-initialize-shared-hash-k.patch
new file mode 100644
index 0000000..e69a3a4
--- /dev/null
+++ b/0001-Revert-hashmap-make-sure-to-initialize-shared-hash-k.patch
@@ -0,0 +1,63 @@
+From de646878d39a184d3e5ecac5e49fac63b5d27dbf Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
+Date: Sun, 20 Sep 2020 14:37:39 +0200
+Subject: [PATCH] Revert "hashmap: make sure to initialize shared hash key
+ atomically"
+
+This reverts commit df14a160095987140f4435412156a80ec628fd7c.
+---
+ src/basic/hashmap.c | 13 ++++++-------
+ 1 file changed, 6 insertions(+), 7 deletions(-)
+
+diff --git a/src/basic/hashmap.c b/src/basic/hashmap.c
+index 64fbad1969..3bd94a1320 100644
+--- a/src/basic/hashmap.c
++++ b/src/basic/hashmap.c
+@@ -1,7 +1,6 @@
+ /* SPDX-License-Identifier: LGPL-2.1+ */
+ 
+ #include <errno.h>
+-#include <pthread.h>
+ #include <stdint.h>
+ #include <stdlib.h>
+ #include <string.h>
+@@ -21,6 +20,7 @@
+ #include "strv.h"
+ 
+ #if ENABLE_DEBUG_HASHMAP
++#include <pthread.h>
+ #include "list.h"
+ #endif
+ 
+@@ -195,6 +195,7 @@ assert_cc(DIRECT_BUCKETS(struct set_entry) < (1 << 3));
+  * a handful of directly stored entries in a hashmap. When a hashmap
+  * outgrows direct storage, it gets its own key for indirect storage. */
+ static uint8_t shared_hash_key[HASH_KEY_SIZE];
++static bool shared_hash_key_initialized;
+ 
+ /* Fields that all hashmap/set types must have */
+ struct HashmapBase {
+@@ -770,10 +771,6 @@ static void reset_direct_storage(HashmapBase *h) {
+         memset(p, DIB_RAW_INIT, sizeof(dib_raw_t) * hi->n_direct_buckets);
+ }
+ 
+-static void shared_hash_key_initialize(void) {
+-        random_bytes(shared_hash_key, sizeof(shared_hash_key));
+-}
+-
+ static struct HashmapBase *hashmap_base_new(const struct hash_ops *hash_ops, enum HashmapType type HASHMAP_DEBUG_PARAMS) {
+         HashmapBase *h;
+         const struct hashmap_type_info *hi = &hashmap_type_info[type];
+@@ -796,8 +793,10 @@ static struct HashmapBase *hashmap_base_new(const struct hash_ops *hash_ops, enu
+ 
+         reset_direct_storage(h);
+ 
+-        static pthread_once_t once = PTHREAD_ONCE_INIT;
+-        assert_se(pthread_once(&once, shared_hash_key_initialize) == 0);
++        if (!shared_hash_key_initialized) {
++                random_bytes(shared_hash_key, sizeof(shared_hash_key));
++                shared_hash_key_initialized= true;
++        }
+ 
+ #if ENABLE_DEBUG_HASHMAP
+         h->debug.func = func;
diff --git a/systemd.spec b/systemd.spec
index c895a4f..0b59e01 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -64,6 +64,7 @@ Patch0900:      0002-Revert-units-set-NoNewPrivileges-for-all-long-runnin.patch
 Patch0998:      0998-resolved-create-etc-resolv.conf-symlink-at-runtime.patch
 
 Patch0009:      https://github.com/systemd/systemd/pull/17050/commits/f58b96d3e8d1cb0dd3666bc74fa673918b586612.patch
+Patch0010:      0001-Revert-hashmap-make-sure-to-initialize-shared-hash-k.patch
 
 %ifarch %{ix86} x86_64 aarch64
 %global have_gnu_efi 1