Your system may crash if kernel extensions are written which invoke fp_ioctlx() on devices, and use addresses passed in from userspace.
With Assure MIMIX DR for AIX version 5.0 drivers loaded on AIX 6.1 nodes without APAR IV50876 installed, or your AIX 7.1 nodes without APAR IV50842 installed, the AIX commands topas -V, fileplace and lvmstat will not function correctly. Assure MIMIX DR for AIX will prevent a system crash by trapping the FP_IOCTLs and returning ENOTSUP.
If your AIX 6.1 nodes have APAR IV50876 installed, or your AIX 7.1 nodes have APAR IV50842 installed, Assure MIMIX DR for AIX version 5.0 will not trap the FP_IOCTLs. The AIX commands topas -V, fileplace and lvmstat will function correctly.