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| author | Mark Rustad <mark.d.rustad@intel.com> | 2012-04-03 10:24:52 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-04-06 18:57:05 -0700 |
| commit | 06383f10c49f507220594a455c6491ca6f8c94ab (patch) | |
| tree | aeed502673297971463114c1046e82c74ab498f2 | |
| parent | e1c4038282c7586c3544542b37872c434669d3ac (diff) | |
| download | linux-06383f10c49f507220594a455c6491ca6f8c94ab.tar.gz linux-06383f10c49f507220594a455c6491ca6f8c94ab.tar.bz2 linux-06383f10c49f507220594a455c6491ca6f8c94ab.zip | |
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: Mark Rustad <mark.d.rustad@intel.com>
Acked-by: Kiran Patil <Kiran.patil@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/tcm_fc/tfc_conf.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c index f357039349ba..2948dc944619 100644 --- a/drivers/target/tcm_fc/tfc_conf.c +++ b/drivers/target/tcm_fc/tfc_conf.c @@ -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); |