Windows 11 BSOD "Bad Pool Caller"

[riccardosassi]

@Maxstar are you able to analyze dmp file? I've made today the two following Windows Updates: KB5050021 and KB5049624.
Now I've many BSOD with "Bad Pool Caller" sentece

I've updated the last one

Thank you

 

[Maxstar]

Hi,

1. I've split your post from this thread: [SOLVED] - kb5048685 fails to install with error 0x80070002 to the BSOD section!
2. Please follow the BSOD posting instructions and attach the requested file with logs in your next post.

 

[riccardosassi]

• Dell XPS PLUS 9320
• Windows 11 (23H2) which is the original OS came pre-installed in the machine
• x64
• I've bought the notebook in september 2022
• I never reinstall the OS
• CPU: 12th Gen Itel Core i7-1260P
• RAM: 16GB(NON-REMOVABLE)
• Video Card: intel Iris Xe Graphics
• verifier /query -> No drivers are currently verified.
• Kaspersky endpoint is installed
• No other particular software installed

Speccy results: http://speccy.piriform.com/results/SC7qn8xCf03mo6z4TzCJG5O

The last dump file is attached in the first post of the thread.

Thank you

 

[Maxstar]

Please attach also the SysnativeFileCollectionApp.zip file to your next post and wait for an BSOD expert!

 

[riccardosassi]

and here is the SysnativeFileCollectionApp.zip
Thank you again

 

[riccardosassi]

Another BSOD right now :-(
I've update also the last DMP file generated in "C:\Windows\Minidump" path
No BSOD expert for me?
Thank you

 

[ET_Explorer]

and here is the SysnativeFileCollectionApp.zip
Thank you again

Sysnative files aren't in English.

 

[ubuysa]

First things first, what a curious RAM configuration, why did you do that? Please remove the XMP overclock profile and run that RAM at its native speed (probably 4800MHz) and see whether the problem remains. The RAM is currently clocked at 6400MHz, which is its designed speed, but that's via an overclock. We need that overclock removed please (via XMP in the BIOS).

You also appear to be missing some drivers....

Intel(R) Usb Bridge Firmware Upgrade Device    USB\VID_04D8&PID_0037\MCHP-DF-005    Impossibile avviare questo dispositivo.
Realtek USB GbE Family Controller #3    USB\VID_0BDA&PID_8153\111000001    Il dispositivo è disattivato.

I would get those drivers installed/updated ASAP.

The three dumps are identical, they all occur during a graphics operation and all either show a driver attempting to free an invalid memory pool (often caused by an attempt to free the same pool twice), or by a corrupted memory pool, which might indicate bad RAM. Since this is a graphics operation the third-party driver involved will be igdkmdn64.sys, the Intel graphics driver. I can't check whether there is an update version of this driver because Dell won't let me, so you'll need to visit the Dell drivers site for your laptop and search for updated drivers, particularly graphics drivers.

I can see two DisplayLink entries suggesting that you're using a docking station and/or external monitors? Can you unplug the laptop from the docking station and/or disconnect the external monitors so the laptop is on its own with nothing connected. Do the problems still happen?

BTW. Because this is just a bit of another thread I don't actually know what problems you're experiencing, so if you could explain here exactly what is happening that would help.

 

[riccardosassi]

Thank you ubuysa
I've made a round inside my BIOS but I cannot see any way to modify RAM configuration: this is a corporate Notebook and I never modify its HW configuration: i've bought it as it is now.
I've attached also a photo of the BIOS overview.
Concerning the device drivers error I faced an issue form the 2024 which causes the fault of my Notebook webcam: it's a very common issue....see this LINK or this LINK
I've a docking station with an USB monitor and two display port Monitors: so a total of three external monitors. In my work I always use my notebook in that configuration and I face BSOD usually once a week or even often always in that configuration. I have to try to use only my notebook without the docking station and so without the external monitors.
BSOD are very randomly generated: for example when I open another tab of Firefox of when I open a PDF file with Acrobat reader or also, this morning, I've found my notebook in BSOD and I left it turned on and correctly working the afternoon of the day before.
What do you suggest?

 

[xilolee]

Hi!

After some research, it seems this bugcheck is usually related to LAN and WI-FI drivers.
Try to update them (click for dell drivers).
I would also update (at least) the chipset drivers.



If you can't find them on dell, try the ones from intel and realtek:
- Intel® Wireless Wi-Fi Drivers for Windows® 10 and Windows 11*
- Intel® Wireless Bluetooth® Drivers for Windows® 10 and Windows 11*
- Realtek

Completely uninstall intel driver and support assistant.
If it's already uninstalled:

Read More:

• Enable the automatic system registry backup (to c:\windows\system32\config\RegBack).
  Read More:

  Open EITHER an elevated powershell instance (i.e. right-click on windows start, click windows powershell (admin)) OR an elevated command prompt instance (i.e. right-click on windows start, click command prompt (admin)) .
  In the new window, copy/paste/launch (with enter, if necessary) these commands:

  reg add "HKLM\System\CurrentControlSet\Control\Session Manager\Configuration Manager" /v EnablePeriodicBackup  /t reg_dword /d 1 /f
  schtasks /run /i /tn "\microsoft\windows\registry\regidlebackup"
  taskschd

  A task scheduler instance will open.
  Navigate in the task scheduler library to microsoft, windows, registry and verify if the regidlebackup task status is Running.
  If it's not running, right-click it and click Run.
• (Optional) Download Tweaking.com - Windows Repair Portable - MajorGeeks
  Open it.
  Click the repairs - main tab (or click jump to repairs).
  Click open repairs: it will automatically create a registry backup.
  Close the program.
• Create a system restore point.
  Read More:

  Open an elevated powershell instance.
  In the powershell window, copy/paste/launch these commands:

  Enable-ComputerRestore c:
  checkpoint-computer -description "checkpoint 2023/05/01"

  Obviously, you can change the description.
  Only if you don't have powershell in the right-click menu (context menu), proceed with the elevated command prompt.
  In the command prompt window, copy/paste these commands:

  powershell
  Enable-ComputerRestore c:
  checkpoint-computer -description "checkpoint 2023/05/01"

  Obviously, you can change the description.
  The restore point creation needed just few seconds and occupies less than 100MB (I'm using an SSD).
  If you prefer, you can use windows GUI to configure restore settings, instead of using that powershell command.
  Click windows start, paste systempropertiesadvanced, press enter. Then change tab clicking on system protection.
• Create a system image, backup your important files, passwords, licence keys.
  Read More:

  If you are already using a system image software, this is the right opportunity to make a complete image of the operating system.
  If you aren't using a system image software, this is the right opportunity to learn and use one: Using Macrium Free to Backup or Image your drives
  Unfortunately, Macrium Reflect is no longer free; you can use the Hasleo backup suite (it's a free and full backup solution) instead.

AFTER you have taken the appropriate precautions explained above, stop and disable the semav6msr64 service:

Read More:

sc stop semav6msr64
sc config semav6msr64 start=disabled

Reboot.
Remove also semav6msr64.sys in c:\windows\system32\drivers, if it were still present.

About the memory speed: raminfo.html and also the minidumps show eight sticks.
Raminfo.html shows 6400 MHz.
The minidumps show Speed 6400MHz; but also Configured Memory Speed 5200.
Intel i7-1260p memory specifications show Up to LPDDR5 5200 MT/s.
Speccy doesn't show the ram speed.
You could check also task manager:

 

[ubuysa]

Indeed, I forgot it was a laptop with LPDDR5 RAM, you typically can't downclock that.

Based on what I was seeing in those dumps, indicating a probable graphics cause, I really would suggest you spend the time running the laptop out of the docking station and on its own. Sadly, troubleshooting is sometimes painful and rarely fun. This is an important test however to isolate the root cause of these BSODs.

 

[riccardosassi]

Hello to Everybody,
This morning I've installed the following three updates:
- Intel® Wireless Wi-Fi Drivers for Windows® 10 and Windows 11*
- Intel® Wireless Bluetooth® Drivers for Windows® 10 and Windows 11*
- Realtek
I've done it manually cause with Dell Update Manager I cannot find anything.
I've attached also the MEM Speed taken from Activity Manager: Speed 5200 MT/s
Now I try to see the situation in these days: if the BSOD continue to come I will work without docking station for some days...

I've done only the step for registry backup (the first one listed by xilolee): I don't understand if also the other steps are necessary, probably yes, but I'm worried about "stop and disable the semav6msr64"...is this danger?

Thank you

 

[xilolee]

I've done only the step for registry backup (the first one listed by xilolee): I don't understand if also the other steps are necessary, probably yes, but I'm worried about "stop and disable the semav6msr64"...is this danger?

If you uninstalled intel driver and support assistant, semav6msr64(.sys) should have been removed too.
If it is still present, it should not be dangerous to remove it with those commands; but since things can always go wrong, it's best to take some precautions.
Try at least one of the other options listed (better safe than sorry).