From: Victor Julien <victor@inliniac.net>
Date: Fri, 2 Nov 2012 08:18:15 +0000 (+0100)
Subject: flow: fix crash when flow engine under extreme stress, and unable to force free any... 
X-Git-Tag: suricata-1.4beta3~44
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=966c731e73a4b45c1cf5eb22f83364f9824664ff;p=thirdparty%2Fsuricata.git

flow: fix crash when flow engine under extreme stress, and unable to force free any existing flow
---

diff --git a/src/flow-hash.c b/src/flow-hash.c
index 283cbc480c..f64aacd10b 100644
--- a/src/flow-hash.c
+++ b/src/flow-hash.c
@@ -425,6 +425,10 @@ static Flow *FlowGetNew(Packet *p) {
             }
 
             f = FlowGetUsedFlow();
+            if (f == NULL) {
+                /* very rare, but we can fail. Just giving up */
+                return NULL;
+            }
 
             /* freed a flow, but it's unlocked */
         } else {