From: Sascha Wildner <saw@online.de>
Date: Wed, 7 Dec 2011 21:11:09 +0000 (+0100)
Subject: kernel/netgraph: Set resp to NULL if it is kfree()'d in the switch case.
X-Git-Tag: v3.0.0~458
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/a21e70908d865ddedb1548272e8b26298838981a

kernel/netgraph: Set resp to NULL if it is kfree()'d in the switch case.

This will prevent a later kfree() in the function from freeing it again.
---

diff --git a/sys/netgraph/ksocket/ng_ksocket.c b/sys/netgraph/ksocket/ng_ksocket.c
index dd9f317681..1e2367671a 100644
--- a/sys/netgraph/ksocket/ng_ksocket.c
+++ b/sys/netgraph/ksocket/ng_ksocket.c
@@ -809,6 +809,7 @@ ng_ksocket_rcvmsg(node_p node, struct ng_mesg *msg,
 			sopt.sopt_val = ksopt->value;
 			if ((error = sogetopt(so, &sopt)) != 0) {
 				kfree(resp, M_NETGRAPH);
+				resp = NULL;
 				break;
 			}