Re: [BUG] Consistent LBR/TSX vmentry failure (0x80000022) calling domain_crash() in vmx.c:3324

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 20/05/2020 11:33, Elliot Killick wrote:
> Hello,
>
> Xen is crashing Windows 10 (64-bit) VMs consistently whenever IDA
> Debugger
> (https://www.hex-rays.com/products/ida/support/download_freeware/)
> launches the Local Windows Debugger. The crash occurs when trying to
> launch the debugger against any executable (e.g. calc.exe) right at the
> time IDA says it is "Moving segment from <X address> to <Y address>".
>
> Tested on Windows 7, 8 and Linux as well but the bug is only triggered
> on Windows 10. Happens whether or not IDA is running with administrator
> privileges. No drivers/VM tools installed. Windows has a bug check code
> of zero, leaves no memory dump, nothing in the logs from QEMU in Dom0,
> the domain just powers off immediately leaving a record of the incident
> in the hypervisor.log. So, it does appear to be a Xen issue. Modern
> Intel CPU.
>
> Does anyone have some ideas on what may be causing this?

What exact CPU do you have?  This looks exactly like the
Haswell/Broadwell TSX errata.

~Andrew