From 8abc718de6e9e52d8a6bfdb735060554aeae25e4 Mon Sep 17 00:00:00 2001 From: Feng Li Date: Tue, 12 Jul 2016 06:15:44 +0800 Subject: iscsi-target: Fix panic when adding second TCP connection to iSCSI session In MC/S scenario, the conn->sess has been set NULL in iscsi_login_non_zero_tsih_s1 when the second connection comes here, then kernel panic. The conn->sess will be assigned in iscsi_login_non_zero_tsih_s2. So we should check whether it's NULL before calling. Signed-off-by: Feng Li Tested-by: Sumit Rai Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Nicholas Bellinger diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index b5212f0..adf419f 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -1371,8 +1371,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) } login->zero_tsih = zero_tsih; - conn->sess->se_sess->sup_prot_ops = - conn->conn_transport->iscsit_get_sup_prot_ops(conn); + if (conn->sess) + conn->sess->se_sess->sup_prot_ops = + conn->conn_transport->iscsit_get_sup_prot_ops(conn); tpg = conn->tpg; if (!tpg) { -- cgit v0.10.2