Crash with SIGBUS on Ubuntu16.04 x64

The crash happen in command line and in Jenkins env

```
INFO: app cmdline: "./AAA"
INFO: logdir is "/tmp/Dr. Memory"
INFO: symcache_dir is "/tmp/Dr. Memory/symcache"
INFO: DynamoRIO configuration directory is /usr/share/tomcat8/.dynamorio
INFO: configuring iv_test pid=12466 dr_ops="-disable_traces -bb_single_restore_prefix -max_bb_instrs 256 -vm_size 256M -no_enable_reset -logdir `/tmp/Dr. Memory/dynamorio` "
INFO: configuring client "/usr/local/DrMemory-Linux-1.11.0-2/bin64/release/libdrmemorylib.so" ops="-logdir `/tmp/Dr. Memory` -symcache_dir `/tmp/Dr. Memory/symcache` -resfile 12466 "
~~Dr.M~~ Dr. Memory version 1.11.0
~~Dr.M~~ (Uninitialized read checking is not yet supported for 64-bit)
~~Dr.M~~ WARNING: application is missing line number information.

```