network_utils: fix TSAN detected race

lib/include/srsran/common/network_utils.h

@@ -154,7 +154,7 @@ private:
   // state
   std::mutex                     socket_mutex;
   std::map<int, recv_callback_t> active_sockets;
-  bool                           running   = false;
+  std::atomic<bool>              running   = {false};
   int                            pipefd[2] = {-1, -1};
   std::vector<int>               rem_fd_tmp_list;
   std::condition_variable        rem_cvar;

lib/src/common/network_utils.cc

@@ -459,7 +459,7 @@ void socket_manager::run_thread()
   FD_SET(pipefd[0], &total_fd_set);
   max_fd = std::max(pipefd[0], max_fd);
 
-  while (running) {
+  while (running.load(std::memory_order_relaxed)) {
     memcpy(&read_fd_set, &total_fd_set, sizeof(total_fd_set));
     int n = select(max_fd + 1, &read_fd_set, nullptr, nullptr, nullptr);