STOP: c0000021a BSOD sometimes at system shutdown
We have been seeing a BSOD sometimes at shutdown during a reboot test
that we are running on several systems. Typically, we see 1 of these
BSODs (screenshot: http://digidreamerz.com/screenshots/2010-02-22_09.43.47.jpg,
process memory dump: http://digidreamerz.com/WER852b.dir00.zip) per
night on one of our systems (we are running the reboot testing on 6
systems, typically 250-300 reboots per night total). After this
happens and we login after restarting the system, we typically get a
process memory dump of winlogon.exe in a temp folder. We have analyzed
it and always see that winlogon.exe is getting an access violation by
trying to write to address 00000000. We have done much debugging and
work to try to figure out why this is happening and we have not had
much luck in figuring out precisely how this happens.
Our systems are running WindowsXP Embedded with SP2 and a few other
patches. They all have the exact same hardware.
We are looking for suggestions on how to figure out what the problem
is, and how we can fix it.
Any help would be greatly appreciated