Add check to see if stack pointer is off the stack according to the memory

src/processor/exploitability_unittest.cc

 // Copyright (c) 2010, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 109 matching lines @@
   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
             ExploitabilityFor("linux_jmp_to_0.dmp"));
   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
             ExploitabilityFor("linux_outside_module.dmp"));
   ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
             ExploitabilityFor("linux_raise_sigabrt.dmp"));
   ASSERT_EQ(google_breakpad::EXPLOITABILITY_INTERESTING,
             ExploitabilityFor("linux_inside_module_exe_region1.dmp"));
   ASSERT_EQ(google_breakpad::EXPLOITABILITY_INTERESTING,
             ExploitabilityFor("linux_inside_module_exe_region2.dmp"));
+  ASSERT_EQ(google_breakpad::EXPLOITABILITY_INTERESTING,
+            ExploitabilityFor("linux_stack_pointer_in_stack.dmp"));
+  ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
+            ExploitabilityFor("linux_stack_pointer_in_module.dmp"));
 
 }
 }