This is a note to let you know that I've just added the patch titled
target: Fix lookup of dynamic NodeACLs during cached demo-mode operation
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
target-fix-lookup-of-dynamic-nodeacls-during-cached-demo-mode-operation.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fcf29481fb8e106daad6688f2e898226ee928992 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Date: Mon, 18 Feb 2013 18:00:33 -0800
Subject: target: Fix lookup of dynamic NodeACLs during cached demo-mode operation
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
commit fcf29481fb8e106daad6688f2e898226ee928992 upstream.
This patch fixes a bug in core_tpg_check_initiator_node_acl() ->
core_tpg_get_initiator_node_acl() where a dynamically created
se_node_acl generated during session login would be skipped during
subsequent lookup due to the '!acl->dynamic_node_acl' check, causing
a new se_node_acl to be created with a duplicate ->initiatorname.
This would occur when a fabric endpoint was configured with
TFO->tpg_check_demo_mode()=1 + TPF->tpg_check_demo_mode_cache()=1
preventing the release of an existing se_node_acl during se_session
shutdown.
Also, drop the unnecessary usage of core_tpg_get_initiator_node_acl()
within core_dev_init_initiator_node_lun_acl() that originally
required the extra '!acl->dynamic_node_acl' check, and just pass
the configfs provided se_node_acl pointer instead.
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/target/target_core_device.c | 13 ++++---------
drivers/target/target_core_fabric_configfs.c | 4 ++--
drivers/target/target_core_internal.h | 2 +-
drivers/target/target_core_tpg.c | 10 ++--------
4 files changed, 9 insertions(+), 20 deletions(-)
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -1483,24 +1483,18 @@ static struct se_lun *core_dev_get_lun(s
struct se_lun_acl *core_dev_init_initiator_node_lun_acl(
struct se_portal_group *tpg,
+ struct se_node_acl *nacl,
u32 mapped_lun,
- char *initiatorname,
int *ret)
{
struct se_lun_acl *lacl;
- struct se_node_acl *nacl;
- if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) {
+ if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) {
pr_err("%s InitiatorName exceeds maximum size.\n",
tpg->se_tpg_tfo->get_fabric_name());
*ret = -EOVERFLOW;
return NULL;
}
- nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname);
- if (!nacl) {
- *ret = -EINVAL;
- return NULL;
- }
lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL);
if (!lacl) {
pr_err("Unable to allocate memory for struct se_lun_acl.\n");
@@ -1511,7 +1505,8 @@ struct se_lun_acl *core_dev_init_initiat
INIT_LIST_HEAD(&lacl->lacl_list);
lacl->mapped_lun = mapped_lun;
lacl->se_lun_nacl = nacl;
- snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname);
+ snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s",
+ nacl->initiatorname);
return lacl;
}
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -357,8 +357,8 @@ static struct config_group *target_fabri
goto out;
}
- lacl = core_dev_init_initiator_node_lun_acl(se_tpg, mapped_lun,
- config_item_name(acl_ci), &ret);
+ lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
+ mapped_lun, &ret);
if (!lacl) {
ret = -EINVAL;
goto out;
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -61,7 +61,7 @@ struct se_lun *core_dev_add_lun(struct s
int core_dev_del_lun(struct se_portal_group *, u32);
struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32);
struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *,
- u32, char *, int *);
+ struct se_node_acl *, u32, int *);
int core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun_acl *, u32, u32);
int core_dev_del_initiator_node_lun_acl(struct se_portal_group *,
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -114,16 +114,10 @@ struct se_node_acl *core_tpg_get_initiat
struct se_node_acl *acl;
spin_lock_irq(&tpg->acl_node_lock);
- list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
- if (!strcmp(acl->initiatorname, initiatorname) &&
- !acl->dynamic_node_acl) {
- spin_unlock_irq(&tpg->acl_node_lock);
- return acl;
- }
- }
+ acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname);
spin_unlock_irq(&tpg->acl_node_lock);
- return NULL;
+ return acl;
}
/* core_tpg_add_node_to_devs():
Patches currently in stable-queue which might be from nab@xxxxxxxxxxxxxxx are
queue-3.4/target-fix-lookup-of-dynamic-nodeacls-during-cached-demo-mode-operation.patch
queue-3.4/target-add-missing-mapped_lun-bounds-checking-during-make_mappedlun-setup.patch
--
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