1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 40865aac2afa..45584442a35c 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -327,6 +327,12 @@ static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
                         break;
 
+                rcu_read_lock();
+                if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
+                        rc = -ENODEV;
+                        rcu_read_unlock();
+                        break;
+                }
                 csk = &cp->csk_tbl[l5_cid];
                 csk_hold(csk);
                 if (cnic_in_use(csk)) {
@@ -341,6 +347,7 @@ static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
                                 cnic_cm_set_pg(csk);
                 }
                 csk_put(csk);
+                rcu_read_unlock();
                 rc = 0;
         }
         }