be79126844
It can be used to panic the kernel by giving too big value. Fix it by moving allocation and size verification into kern_getfsstat(). This even simplifies kern_getfsstat() consumers, but destroys symmetry - memory is allocated inside kern_getfsstat(), but has to be freed by the caller. Found by: FreeBSD Kernel Stress Test Suite: http://www.holm.cc/stress/ Reported by: Peter Holm <peter@holm.cc>