src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/bsd/amd64/BsdAMD64CFrame.java

*** 1,7 ****
  /*
!  * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 58,69 ****
  
        if ( (rbp == null) || rbp.lessThan(rsp) ) {
          return null;
        }
  
        Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE);
!       if (nextRBP == null) {
          return null;
        }
        Address nextPC  = rbp.getAddressAt( 1 * ADDRESS_SIZE);
        if (nextPC == null) {
          return null;
--- 58,74 ----
  
        if ( (rbp == null) || rbp.lessThan(rsp) ) {
          return null;
        }
  
+       // Check alignment of rbp
+       if (dbg.getAddressValue(rbp) % ADDRESS_SIZE != 0) {
+         return null;
+       }
+ 
        Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE);
!       if (nextRBP == null || nextRBP.lessThanOrEqual(rbp)) {
          return null;
        }
        Address nextPC  = rbp.getAddressAt( 1 * ADDRESS_SIZE);
        if (nextPC == null) {
          return null;