hi Sorin,
OvsInitExternalNBLContext() is called from OvsStartNBLIngress() which is the 
function that hooks into NDIS to get hold of packets in the ingress path.

Typically these are packets that are generated by VMs, or it could be generated 
by an layered driver above OVS.

Under what conditions would a NBL generated by OVS, get processed in 
OvsStartNBLIngress()?

-- Nithin

> On Jul 1, 2015, at 7:01 AM, Sorin Vinturis <svintu...@cloudbasesolutions.com> 
> wrote:
> 
> This BSOD occurred in the context of a packet (NBL) with multiple
> NET_BUFFER(s) (NBs). The reason for the BSOD is due to the marking
> of NBLs created by OVS as being external and wrongly completing them.
> 
> This patch should be applied both on master and branch 2.4.
> 
> Signed-off-by: Sorin Vinturis <svintu...@cloudbasesolutions.com>
> Reported-by: Sorin Vinturis <svintu...@cloudbasesolutions.com>
> Reported-at: 
> https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_openvswitch_ovs-2Dissues_issues_82&d=BQIGaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=pNHQcdr7B40b4h6Yb7FIedI1dnBsxdDuTLBYD3JqV80&m=fhvbX5XtKdTcw6NAB-9ZhpeR8OCoGr9hIPCT5N4ZDtA&s=wozkLP_z4adCLJ55PdqIHRBkdlEmOrQ8PPlDVcoOqII&e=
>  


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