[PATCH 6/11] iscsi bugfixes: fix oops when removing session

[Mike Christie <michaelc@cs.wisc.edu>]

>From Or Gerlitz:

We are touching the cls_session after we have freed
it. This causes a oops.

Signed-off-by: Or Gerlitz  <ogerlitz@voltaire.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 92186f0..775fd2a 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1337,6 +1337,7 @@ void iscsi_session_teardown(struct iscsi
 {
 	struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 	struct iscsi_session *session = iscsi_hostdata(shost->hostdata);
+	struct module *owner = cls_session->transport->owner;
 
 	scsi_remove_host(shost);
 
@@ -1345,7 +1346,7 @@ void iscsi_session_teardown(struct iscsi
 
 	iscsi_destroy_session(cls_session);
 	scsi_host_put(shost);
-	module_put(cls_session->transport->owner);
+	module_put(owner);
 }
 EXPORT_SYMBOL_GPL(iscsi_session_teardown);