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

[Takanori Watanabe]

The following reply was made to PR kern/170096; it has been noted by GNATS.

From: Takanori Watanabe <takawata at init-main.com>
To: FreeBSD-gnats-submit at FreeBSD.org, freebsd-virtualization at FreeBSD.org
Cc:  
Subject: Re: kern/170096: Dyanamically-attached network interface will crash with VIMAGE enabled kernel
Date: Tue, 24 Jul 2012 13:54:10 +0900

 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);
 ===