[PATCH 2/3] scsi: libiscsi: fix invalid pointer dereference in iscsi_eh_session_reset

[Ding Hui]

like commit 5db6dd14b313 ("scsi: libiscsi: Fix NULL pointer dereference in
iscsi_eh_session_reset"), access conn->persistent_address here is not safe
too.

The persistent_address is independent of conn refcount, so maybe
already freed by iscsi_conn_teardown(), also we put the refcount of conn
above, the conn pointer may be invalid.

Signed-off-by: Ding Hui <dinghui@xxxxxxxxxxxxxx>
---
 drivers/scsi/libiscsi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 712a45368385..69b3b2148328 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2531,8 +2531,8 @@ int iscsi_eh_session_reset(struct scsi_cmnd *sc)
 	spin_lock_bh(&session->frwd_lock);
 	if (session->state == ISCSI_STATE_LOGGED_IN) {
 		ISCSI_DBG_EH(session,
-			     "session reset succeeded for %s,%s\n",
-			     session->targetname, conn->persistent_address);
+			     "session reset succeeded for %s\n",
+			     session->targetname);
 	} else
 		goto failed;
 	spin_unlock_bh(&session->frwd_lock);
-- 
2.17.1