The free OSR Learning Library has more than 50 articles on a wide variety of topics about writing and debugging device drivers and Minifilters. From introductory level to advanced. All the articles have been recently reviewed and updated, and are written using the clear and definitive style you've come to expect from OSR over the years.
Check out The OSR Learning Library at: https://www.osr.com/osr-learning-library/
From the docs about FltQueueDeferredIoWorkItem it says
"Caution To avoid deadlocks, a minifilter must not post an I/O operation to a system work queue in the post-operation callback for any I/O operations that a driver can complete directly in the storage stack, such as the following:
IRP_MJ_READ IRP_MJ_WRITE IRP_MJ_FLUSH_BUFFERS
Is this still dangerous if the posting is never done for the paging file? If so, I must not understand some behavior involved in posting to a work queue. Can anyone enlighten me?
|Upcoming OSR Seminars|
|OSR has suspended in-person seminars due to the Covid-19 outbreak. But, don't miss your training! Attend via the internet instead!|
|Internals & Software Drivers||15 November 2021||Live, Online|
|Writing WDF Drivers||24 January 2022||Live, Online|
|Developing Minifilters||7 February 2022||Live, Online|
|Kernel Debugging||21 March 2022||Live, Online|