Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penber...

[karo-tx-linux.git] / drivers / target / target_core_fabric_configfs.c

diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index 9c6791734ee8d704a07bf4ba9f86de3912573a83..810263dfa4a1d9d272e16a492c5fb44365967a6c 100644 (file)
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -70,6 +70,12 @@ static int target_fabric_mappedlun_link(
        struct se_portal_group *se_tpg;
        struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
        int ret = 0, lun_access;
+
+       if (lun->lun_link_magic != SE_LUN_LINK_MAGIC) {
+               pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
+                       " %p to struct lun: %p\n", lun_ci, lun);
+               return -EFAULT;
+       }
        /*
         * Ensure that the source port exists
         */
@@ -742,6 +748,12 @@ static int target_fabric_port_link(
        struct target_fabric_configfs *tf;
        int ret;
 
+       if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
+               pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
+                       " %p to struct se_device: %p\n", se_dev_ci, dev);
+               return -EFAULT;
+       }
+
        tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
        se_tpg = container_of(to_config_group(tpg_ci),
                                struct se_portal_group, tpg_group);