K 10 svn:author V 6 andrew K 8 svn:date V 27 2019-11-20T14:37:48.793098Z K 7 svn:log V 544 Import the NetBSD Kernel Concurrency Sanitizer (KCSAN) runtime. KCSAN is a tool to find concurrent memory access that may race each other. After a determined number of memory accesses a cell is created, this describes the current access. It will then delay for a short period to allow other CPUs a chance to race. If another CPU performs a memory access to an overlapping region during this delay the race is reported. This is a straight import of the NetBSD code, it will be adapted to FreeBSD in a future commit. Sponsored by: DARPA, AFRL END