[PATCH 3.14 54/73] Target/iser: Fix a wrong dereference in case discovery session is over iser

From: Greg Kroah-Hartman
Date: Fri Dec 05 2014 - 18:18:23 EST

3.14-stable review patch. If anyone has any objections, please let me know.


From: Sagi Grimberg <sagig@xxxxxxxxxxxx>

commit e0546fc1ba66c90cb38a5764357366267d3e58e4 upstream.

In case the discovery session is carried over iser, we can't
access the assumed network portal since the default portal is
used. In this case we don't really need to allocate the fastreg
pool, just prepare to the text pdu that will follow.

Signed-off-by: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Reported-by: Alex Tabachnik <alext@xxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/infiniband/ulp/isert/ib_isert.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -985,7 +985,8 @@ isert_put_login_tx(struct iscsi_conn *co
if (!login->login_failed) {
if (login->login_complete) {
- if (isert_conn->conn_device->use_fastreg) {
+ if (!conn->sess->sess_ops->SessionType &&
+ isert_conn->conn_device->use_fastreg) {
ret = isert_conn_create_fastreg_pool(isert_conn);
if (ret) {
pr_err("Conn: %p failed to create"

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