On Wed, Sep 3, 2014 at 1:03 AM, Michael S. Tsirkin wrote: >> bad one is the >> >> Author: Jason Wang >> Date: Tue Sep 2 18:07:46 2014 +0300 >> >> vhost_net: start/stop guest notifiers properly > > > > upstream has this (pull request sent today): > vhost_net: cleanup start/stop condition > > Could you apply it and see if it helps please? > > Michael, if it helps it should be before start/stop guest notifiers > ideally to avoid bisect problems. It is already applied as shown from the list in the previous message (there are some aio fixes too on top of 2.1 I picked before but they should not impact vhost-net interaction in any mean). The symptoms are a bit interesting - VM crashes only at PCI device initalization (e.g. grub stage after reset and initrd unpacking are passing well, but then things getting ugly). I am running 3.14 guest i686-pae kernel from debian backports in guest, so it may be version-specific after all. If it`ll be hard to reproduce, I can try 64bit, expecting same behavior. Please find args in attached file.