[PATCH net 2/5] net/smc: fix a NULL pointer dereference

[Ursula Braun]

From: Kangjie Lu <k...@umn.edu>

In case alloc_ordered_workqueue fails, the fix returns NULL
to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <k...@umn.edu>
Signed-off-by: Ursula Braun <ubr...@linux.ibm.com>
---
 net/smc/smc_ism.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index 2fff79db1a59..e89e918b88e0 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -289,6 +289,11 @@ struct smcd_dev *smcd_alloc_dev(struct device *parent, 
const char *name,
        INIT_LIST_HEAD(&smcd->vlan);
        smcd->event_wq = alloc_ordered_workqueue("ism_evt_wq-%s)",
                                                 WQ_MEM_RECLAIM, name);
+       if (!smcd->event_wq) {
+               kfree(smcd->conn);
+               kfree(smcd);
+               return NULL;
+       }
        return smcd;
 }
 EXPORT_SYMBOL_GPL(smcd_alloc_dev);
-- 
2.16.4