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Commit 06383f10 authored by Mark Rustad's avatar Mark Rustad Committed by Nicholas Bellinger
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tcm_fc: Do not free tpg structure during wq allocation failure 



Avoid freeing a registered tpg structure if an alloc_workqueue call
fails.  This fixes a bug where the failure was leaking memory associated
with se_portal_group setup during the original core_tpg_register() call.

Signed-off-by: default avatarMark Rustad <mark.d.rustad@intel.com>
Acked-by: default avatarKiran Patil <Kiran.patil@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent e1c40382

drivers/target/tcm_fc/tfc_conf.c

+8 −5
Original line number Diff line number Diff line
@@ -300,6 +300,7 @@ static struct se_portal_group *ft_add_tpg( 
{

	struct ft_lport_acl *lacl;

	struct ft_tpg *tpg;

	struct workqueue_struct *wq;

	unsigned long index;

	int ret;
@@ -321,18 +322,20 @@ static struct se_portal_group *ft_add_tpg( 
	tpg->lport_acl = lacl;

	INIT_LIST_HEAD(&tpg->lun_list);



	ret = core_tpg_register(&ft_configfs->tf_ops, wwn, &tpg->se_tpg,

				tpg, TRANSPORT_TPG_TYPE_NORMAL);

	if (ret < 0) {

	wq = alloc_workqueue("tcm_fc", 0, 1);

	if (!wq) {

		kfree(tpg);

		return NULL;

	}



	tpg->workqueue = alloc_workqueue("tcm_fc", 0, 1);

	if (!tpg->workqueue) {

	ret = core_tpg_register(&ft_configfs->tf_ops, wwn, &tpg->se_tpg,

				tpg, TRANSPORT_TPG_TYPE_NORMAL);

	if (ret < 0) {

		destroy_workqueue(wq);

		kfree(tpg);

		return NULL;

	}

	tpg->workqueue = wq;



	mutex_lock(&ft_lport_lock);

	list_add_tail(&tpg->list, &lacl->tpg_list);