Pressing ESC from "PXE windows Boot manager" causes ASSERT

[Karunakar P <karunakarp@amiindia.co.in>]

Hi All,

We have facing an issue with PXE boot.
[Issue]
When ESC is pressed from Windows Boot manager during PXE boot (IPv4 or IPv6) system Hangs with following ASSERT

ASSERT [DxeCore] \MdeModulePkg\Core\Dxe\Mem\Pool.c : CR has Bad Signature

[Reproduction Steps]
1. Perform UEFI PXEv4 or UEFI PXEv6 boot
2. It will start PXE boot over IPv4/6 and Downloads NBP file successfully.
   Attached the Screenshot for the same(ScreenShot1.jpg)

   It will Displays the info like "Press ENTER for network boot service"
   Attached Screensho(ScreenShot2.jpg)

3. Press ENTER and then press ESC immediately to see the Windows Boot Manager Menu
   It will list the available Operating Systems
   Attached the screenshot(ScreenShot3.png)

4. Press ESC to come back to Setup or next Boot option

[Result]
System hangs with ASSERT

[Expected Result]
On pressing ESC from Windows Boot Manager, it should come back to setup/Next boot option in boot order

Note:
We have PXE server configured in Windows Server 2012 R2.

Please look into it.


Thanks,
karunakar