Re: Pressing ESC from "PXE windows Boot manager" causes ASSERT

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

Hello All,

The ASSERT happens in the following function

/**
  Internal function to free a pool entry.
  Caller must have the memory lock held

  @param  Buffer                 The allocated pool entry to free
  @param  PoolType               Pointer to pool type

  @retval EFI_INVALID_PARAMETER  Buffer not valid
  @retval EFI_SUCCESS            Buffer successfully freed.

**/
EFI_STATUS
CoreFreePoolI (
  IN VOID               *Buffer,
  OUT EFI_MEMORY_TYPE   *PoolType OPTIONAL
  )
{
.
.
ASSERT(Buffer != NULL);
  //
  // Get the head & tail of the pool entry
  //
  Head = CR (Buffer, POOL_HEAD, Data, POOL_HEAD_SIGNATURE);	// ASSERT happens here
  ASSERT(Head != NULL);
.
.
}

We are using NetworkPkg: SHA- ef810bc807188224a752ffbcf5e7f4b651291cee

I think  here I'm unable attach the files.
You can find the attached screenshots in the following Bug571
https://bugzilla.tianocore.org/show_bug.cgi?id=571

Thanks,
Karunakar


-----Original Message-----
From: Ye, Ting [mailto:ting.ye@intel.com] 
Sent: Wednesday, May 24, 2017 10:29 AM
To: Karunakar P; edk2-devel@lists.01.org
Subject: RE: Pressing ESC from "PXE windows Boot manager" causes ASSERT

Hi Karunakar,

Sorry I did not find your attached files. Would you please send them again? Besides that, do you mind telling us which code base are you using for PXE boot?  Are you using some revision of EDKII main trunk or UDK release?

Thanks,
Ting

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Karunakar P
Sent: Wednesday, May 24, 2017 12:20 PM
To: edk2-devel@lists.01.org
Subject: [edk2] Pressing ESC from "PXE windows Boot manager" causes ASSERT

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
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