If you enable driver verifier on usbstor.sys, hibernate the system and then resume from hibernation, you may experience a system crash with bug code DRIVER_VERIFIER_IOMANAGER_VIOLATION (c9) and the first argument equal to 228. The memory dump will point to usbstor.sys as the faulting module, specifically in the USBSTOR_FdoSetPowerD0Completion routine.
Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.