From 0a01bd4e1bdf5f761f5cee8bd95d82284ae0095f Mon Sep 17 00:00:00 2001
From: faluco <borja.ferrer@softwareradiosystems.com>
Date: Fri, 31 Jul 2020 12:27:40 +0200
Subject: [PATCH] - Fix a race condition where the prach struct was being free
 while the prach worker was still running.   This could cause heap corruption
 making the enb_phy_test to fail sometimes.

---
 srsenb/src/phy/prach_worker.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/srsenb/src/phy/prach_worker.cc b/srsenb/src/phy/prach_worker.cc
index 3591b10e4..fb20eca96 100644
--- a/srsenb/src/phy/prach_worker.cc
+++ b/srsenb/src/phy/prach_worker.cc
@@ -72,12 +72,12 @@ int prach_worker::init(const srslte_cell_t&      cell_,
 
 void prach_worker::stop()
 {
-  srslte_prach_free(&prach);
-
   running      = false;
   sf_buffer* s = nullptr;
   pending_buffers.push(s);
   wait_thread_finish();
+
+  srslte_prach_free(&prach);
 }
 
 void prach_worker::set_max_prach_offset_us(float delay_us)