From f4ea3137077490388fb6299288cda931008b4856 Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Wed, 30 Dec 2020 16:55:37 +0300
Subject: [PATCH] Fix cl->read_op being freed without calling the completion
 callback

---
 messenger.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/messenger.cpp b/messenger.cpp
index 7d24abe8..e1bad003 100644
--- a/messenger.cpp
+++ b/messenger.cpp
@@ -348,7 +348,14 @@ void osd_messenger_t::stop_client(int peer_fd)
     }
     if (cl->read_op)
     {
-        delete cl->read_op;
+        if (cl->read_op->callback)
+        {
+            cancel_op(cl->read_op);
+        }
+        else
+        {
+            delete cl->read_op;
+        }
         cl->read_op = NULL;
     }
     for (auto rit = read_ready_clients.begin(); rit != read_ready_clients.end(); rit++)