From 5e20e9ec3859205c220867ca49efb752b8edaacc Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Wed, 26 Jan 2022 16:25:58 +0200
Subject: Prevent possible concurrent CBanDB::Write() calls

---
 src/banman.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/banman.cpp')

diff --git a/src/banman.cpp b/src/banman.cpp
index 95b927c1ff..7fa489b051 100644
--- a/src/banman.cpp
+++ b/src/banman.cpp
@@ -7,6 +7,7 @@
 
 #include <netaddress.h>
 #include <node/ui_interface.h>
+#include <sync.h>
 #include <util/system.h>
 #include <util/time.h>
 #include <util/translation.h>
@@ -39,6 +40,9 @@ BanMan::~BanMan()
 
 void BanMan::DumpBanlist()
 {
+    static Mutex dump_mutex;
+    LOCK(dump_mutex);
+
     SweepBanned(); // clean unused entries (if bantime has expired)
 
     if (!BannedSetIsDirty()) return;
-- 
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