[PATCH] net: strparser: fix a missing check for create_singlethread_workqueue

[Kangjie Lu]

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@xxxxxxx>
---
 net/strparser/strparser.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/strparser/strparser.c b/net/strparser/strparser.c
index da1a676860ca..860dcfb95ee4 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;
 }
-- 
2.17.1