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[win-pv-devel] DRIVER_IRQL_NOT_LESS_OR_EQUAL in xenbus.sys

  • To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Michael Stern <mhstar89@xxxxxxxxx>
  • Date: Fri, 11 Nov 2016 15:51:40 +0100
  • Delivery-date: Fri, 11 Nov 2016 14:53:18 +0000
  • List-id: Developer list for the Windows PV Drivers subproject <win-pv-devel.lists.xenproject.org>

I'm running a Windows 2016 VM under Xen, which works great - however, the moment I try to install Microsoft SQL Server 2016, Windows will crash with a BSOD due to DRIVER_IRQL_NOT_LESS_OR_EQUAL in xenbus.sys.

Here's what I found out:
- The bug is perfectly reproducible, it'll happen every time, and it'll happen within seconds of the attempted install.
- If the SQL Server 2016 Setup is started while xenbus.sys is not installed, the install works fine, but obviously the performance of the server is very poor without the PV drivers.
- This happens with the signed drivers, and with the bleeding edge drivers.
- This is not limited to Windows 2016 and SQL Server 2016, installing the SP3 of SQL Server 2012 on a Windows 2008 Server will also result in a BSOD in xenbus.sys.

Do you have any pointers as to what I could try? Would you be interested in a memory dump, or some other information? I can setup a pristine Windows 2016 Server with all the files in place to cause the crash.

Host system is a Xen 4.7.0 on Ubuntu 16.04 (however keep in mind that without the PV drivers, the install works without hiccups).
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