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net/smc: fix a NULL pointer dereference 

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

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kangjie Lu 2019-04-11 11:17:31 +02:00 committed by David S. Miller
parent fd57770dd1
commit e183d4e414
1 changed files with 5 additions and 0 deletions
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5
net/smc/smc_ism.c
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@ -289,6 +289,11 @@ struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,
INIT_LIST_HEAD(&smcd->vlan); INIT_LIST_HEAD(&smcd->vlan);
smcd->event_wq = alloc_ordered_workqueue("ism_evt_wq-%s)", smcd->event_wq = alloc_ordered_workqueue("ism_evt_wq-%s)",
WQ_MEM_RECLAIM, name); WQ_MEM_RECLAIM, name);
if (!smcd->event_wq) {
kfree(smcd->conn);
kfree(smcd);
return NULL;
}
return smcd; return smcd;
} }
EXPORT_SYMBOL_GPL(smcd_alloc_dev); EXPORT_SYMBOL_GPL(smcd_alloc_dev);