From: Kangjie Lu <kjlu@umn.edu>
Date: Fri, 15 Mar 2019 04:12:06 +0000 (-0500)
Subject: net: strparser: fix a missing check for create_singlethread_workqueue
X-Git-Tag: v5.1-rc3~35^2~72
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=228cd2dba27cee9956c1af97e6445be056881e41;p=thirdparty%2Fkernel%2Flinux.git

net: strparser: fix a missing check for create_singlethread_workqueue

In case create_singlethread_workqueue fails, the check returns
an error to callers to avoid potential NULL pointer dereferences.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/strparser/strparser.c b/net/strparser/strparser.c
index da1a676860cad..860dcfb95ee47 100644
--- a/net/strparser/strparser.c
+++ b/net/strparser/strparser.c
@@ -550,6 +550,8 @@ EXPORT_SYMBOL_GPL(strp_check_rcv);
 static int __init strp_mod_init(void)
 {
 	strp_wq = create_singlethread_workqueue("kstrp");
+	if (unlikely(!strp_wq))
+		return -ENOMEM;
 
 	return 0;
 }