/usr/bin/compiz:11:malloc_consolidate:_int_malloc:__libc_calloc:g_malloc0:thread_memory_from_self

The Ubuntu Error Tracker has been receiving reports about a problem regarding compiz. This problem was most recently seen with package version 1:0.9.13.0+16.10.20160818.2-0ubuntu2, the problem page at https://errors.ubuntu.com/problem/34a3e9f498263ab5a6091ac47875f85f38d64fb3 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker you can request it at http://forms.canonical.com/reports/.