From: Florin Coras <fcoras@cisco.com>
Date: Tue, 10 Mar 2020 19:34:28 +0000 (+0000)
Subject: tcp: protect against forced cleanups
X-Git-Tag: v20.09-rc0~432
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff_plain;h=9f4db3cddf9931ef97ef0ea8f9dac1b63199407c

tcp: protect against forced cleanups

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I0c3b847044d522f55dfd8262afa7c161d5bd5dd3
---

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index 2ada8b8f7dd..7712ade4416 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -1467,6 +1467,8 @@ tcp_handle_cleanups (tcp_worker_ctx_t * wrk, clib_time_type_t now)
 	break;
       clib_fifo_sub2 (wrk->pending_cleanups, req);
       tc = tcp_connection_get (req->connection_index, thread_index);
+      if (PREDICT_FALSE (!tc))
+	continue;
       session_transport_delete_notify (&tc->connection);
       tcp_connection_cleanup (tc);
     }