Hi, Ian tracked it down to a commit to pmap-v6.c http://svnweb.freebsd.org/base/head/sys/arm/arm/pmap-v6.c?r1=251370&r2=252694&pathrev=252694 Backing this commit out fixes the jemalloc asserts. Ian has emailed zbb directly to get his take on it. - Diane -- - db at FreeBSD.org db at db.net http://www.db.net/~db