A kernel with the below change is working for me.
diff --git a/sys/sys/_malloc.h b/sys/sys/_malloc.h index 37fcb0e18d..3b40725d47 100644 --- a/sys/sys/_malloc.h +++ b/sys/sys/_malloc.h @@ -70,7 +70,6 @@ struct kmalloc_slab { __size_t findex; /* end of frees */ __size_t xindex; /* synchronizer */ exislock_t exis; /* existential lock state */ - struct kmalloc_mgt *mgt; __uint64_t bmap[(KMALLOC_SLAB_MAXOBJS + 63) / 64]; void *fobjs[1]; /* list of free objects */ } __cachealign; -- James