Re: [PATCH v1] Target/iser: Fix a wrong dereference in case discovery session is over iser

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On 10/06/2014 13:41, Sagi Grimberg wrote:
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.

So what was the wrong deference here and what was the result of accessing it?

Signed-off-by: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Reported-by: Alex Tabachnik <alext@xxxxxxxxxxxx>
---
Changes from v0:
- Fixed wrong session dereference

  drivers/infiniband/ulp/isert/ib_isert.c |    4 +++-
  1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 52c5ab8..8232d9a 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -1053,7 +1053,9 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login,
  	}
  	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) {
+				/* Normal Session and fastreg is used */
  				u8 pi_support = login->np->tpg_np->tpg->tpg_attrib.t10_pi;
ret = isert_conn_create_fastreg_pool(isert_conn,

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