kern/170096: Dyanamically-attached network interface will crash with VIMAGE enabled kernel

[Takanori Watanabe]

It is fixed with following patch, though some consideration needed with
kernel module:

Index: usb_process.c
===================================================================
--- usb_process.c       (revision 238557)
+++ usb_process.c       (working copy)
@@ -55,6 +55,7 @@
 #include <sys/proc.h>
 #include <sys/kthread.h>
 #include <sys/sched.h>
+#include <net/vnet.h>
 
 #if (__FreeBSD_version < 700000)
 #define        thread_lock(td) mtx_lock_spin(&sched_lock)
@@ -111,6 +112,9 @@
        td = curthread;
        thread_lock(td);
        sched_prio(td, up->up_prio);
+#ifdef VIMAGE
+       td->td_vnet = vnet0;
+#endif
        thread_unlock(td);
 
        mtx_lock(up->up_mtx);
===