HHH-17064 Fetch mode select causes StackOverflowError if used together with fetch type lazy

hibernate-core/src/main/java/org/hibernate/sql/results/graph/entity/AbstractEntityInitializer.java

@@ -614,6 +614,9 @@ public abstract class AbstractEntityInitializer extends AbstractFetchParentAcces
 			if ( existingLoadingEntry.getEntityInitializer() == this ) {
 				isOwningInitializer = true;
 			}
+			else {
+				isInitialized = true;
+			}
 		}
 		else {
 			isOwningInitializer = true;

hibernate-core/src/main/java/org/hibernate/sql/results/graph/entity/internal/EntitySelectFetchInitializer.java

@@ -109,6 +109,12 @@ public class EntitySelectFetchInitializer extends AbstractFetchParentAccess impl
 			return;
 		}
 
+		final EntityInitializer parentEntityInitializer = parentAccess.findFirstEntityInitializer();
+		if ( parentEntityInitializer != null && parentEntityInitializer.isEntityInitialized() ) {
+			isInitialized = true;
+			return;
+		}
+
 		if ( !isAttributeAssignableToConcreteDescriptor() ) {
 			return;
 		}

hibernate-core/src/test/java/org/hibernate/orm/test/mapping/fetch/depth/DepthOneTest.java

@@ -61,6 +61,9 @@ public class DepthOneTest {
 				session -> {
 					Agency agency = new Agency( 1, "Test Agency" );
 
+					AgencyDetail agencyDetail = new AgencyDetail( 1, "abc" );
+					agency.setAgencyDetail( agencyDetail );
+					session.persist( agencyDetail );
 					session.persist( agency );
 					Group group = new Group( 1, "Test Group 1" );
 
@@ -84,8 +87,24 @@ public class DepthOneTest {
 				session -> {
 					Agency agency = session.get( Agency.class, 1 );
 					assertThat( agency ).isNotNull();
+					assertThat( agency.getAgencyDetail() ).isNotNull();
+
+					Set<Group> groups = agency.getGroups();
+					assertThat( groups.size() ).isEqualTo( 1 );
+
+					Group group = groups.iterator().next();
+					assertThat( group.getAgency() ).isNotNull();
+					assertThat( group.getAgency() ).isSameAs( agency );
+
+					Set<User> users = group.getUsers();
+					assertThat( users.size() ).isEqualTo( 8 );
+					for ( User user : users ) {
+						assertThat( user.getAgency() ).isNotNull();
+						assertThat( user.getAgency() ).isSameAs( agency );
+					}
+
 					List<String> executedQueries = statementInspector.getSqlQueries();
-					assertThat( executedQueries.size() ).isEqualTo( 5 );
+					assertThat( executedQueries.size() ).isEqualTo( 4 );
 
 					assertThat( executedQueries.get( 0 ).toLowerCase() ).isEqualTo(
 							"select a1_0.agency_id,a2_0.agency_id,a2_0.agency_detail,a1_0.agency_txt from agency_table a1_0 left join agency_detail_table a2_0 on a2_0.agency_id=a1_0.agency_id where a1_0.agency_id=?"
@@ -103,9 +122,6 @@ public class DepthOneTest {
 							"select u1_0.group_id,u1_1.user_id,a1_0.agency_id,a1_0.agency_txt,u1_1.user_name from group_user u1_0 join user_table u1_1 on u1_1.user_id=u1_0.user_id left join agency_table a1_0 on a1_0.agency_id=u1_1.agency_id where u1_0.group_id in(select g1_0.group_id from group_table g1_0 where g1_0.agency_id=?)"
 					);
 
-					assertThat( executedQueries.get( 4 ).toLowerCase() ).isEqualTo(
-							"select a1_0.agency_id,a1_0.agency_detail from agency_detail_table a1_0 where a1_0.agency_id=?"
-					);
 				}
 		);
 	}
@@ -212,6 +228,14 @@ public class DepthOneTest {
 		private Integer agencyId = null;
 		private String agencyDetail = null;
 
+		public AgencyDetail() {
+		}
+
+		public AgencyDetail(Integer agencyId, String agencyDetail) {
+			this.agencyId = agencyId;
+			this.agencyDetail = agencyDetail;
+		}
+
 		@Id
 		@Column(name = "AGENCY_ID")
 		public Integer getAgencyId() {