svn commit: r253346 - in head/sys: kern net netgraph netgraph/bluetooth/socket

Marko Zec zec at
Thu Jul 25 10:24:57 UTC 2013

On Thursday 25 July 2013 11:36:46 Craig Rodrigues wrote:
> On Thu, Jul 25, 2013 at 1:07 AM, Marius Strobl 
<marius at>wrote:
> > Uhm - do we really need to have that layering violation in subr_bus.c?
> > Wouldn't it be sufficient to set curthread->td_vnet to vnet0 in
> > if_alloc(9) or if_attach(9) at least instead?
> There was some discussion about this involving Marko Zec,  Adrian Chadd,
> and myself
> starting in this thread:
> Adrian and Marko converged on similar patches:
> As Marko mentioned in another e-mail on this thread, the patch as it is
> necessary in
> order to fix VIMAGE related kernel panics in many different scenarios,
> including
> ones involving Netgraph nodes.

Moreover, unconditionally setting curvnet to vnet0 in if_alloc(), 
if_attach() or similar places as suggested my Marius simply couldn't work, 
because that would break creation of pseudo-interfaces inside non-vnet0 
contexts (such as vlan, ng_ether, ng_eiface etc.).


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