1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 6b423485c5d6..ea9617c7b403 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -351,7 +351,15 @@ int core_enable_device_list_for_node(
                         kfree(new);
                         return -EINVAL;
                 }
-                BUG_ON(orig->se_lun_acl != NULL);
+                if (orig->se_lun_acl != NULL) {
+                        pr_warn_ratelimited("Detected existing explicit"
+                                " se_lun_acl->se_lun_group reference for %s"
+                                " mapped_lun: %llu, failing\n",
+                                 nacl->initiatorname, mapped_lun);
+                        mutex_unlock(&nacl->lun_entry_mutex);
+                        kfree(new);
+                        return -EINVAL;
+                }
 
                 rcu_assign_pointer(new->se_lun, lun);
                 rcu_assign_pointer(new->se_lun_acl, lun_acl);