Windows System Software -- Consulting, Training, Development -- Unique Expertise, Guaranteed Results
Before Posting...
Please check out the Community Guidelines in the Announcements and Administration Category.More Info on Driver Writing and Debugging
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/
!verifier 3
Bill_Wandel
Member - All Emails Posts: 237
I am looking into a memory leak using windbg and verifier. Stopping the
driver gives me the C4/62 crash. When I enter "!verifier 3" the debugger
just stays busy after printing out the address/length/tag header.
My windbg version is 1803.
Bill Wandel
driver gives me the C4/62 crash. When I enter "!verifier 3" the debugger
just stays busy after printing out the address/length/tag header.
My windbg version is 1803.
Bill Wandel
| 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! | ||
| Writing WDF Drivers | 7 Dec 2020 | LIVE ONLINE |
| Internals & Software Drivers | 25 Jan 2021 | LIVE ONLINE |
| Developing Minifilters | 8 March 2021 | LIVE ONLINE |
Comments
What's the target O/S version? If you CTRL+ALT+D can you see the debugger chatting with the target or is it just hanging there?
-scott
OSR
Bill Wandel
Just tried it with WinDbg 17763 and OS 17758 and finished just fine:
Driver Verification List ------------------------ nt!_VF_TARGET_DRIVER 0xffffa486435decc0: Nothing.sys (Loaded) Pool Allocation Statistics: ( NonPagedPool / PagedPool ) Current Pool Allocations: ( 0x00000001 / 0x00000000 ) Current Pool Bytes: ( 0x00000064 / 0x00000000 ) Peak Pool Allocations: ( 0x00000001 / 0x00000000 ) Peak Pool Bytes: ( 0x00000064 / 0x00000000 ) Contiguous Memory Bytes: 0x00000000 Peak Contiguous Memory Bytes: 0x00000000 Pool Allocations: Address Length Tag Caller Address ------------------ ---------- ---- ------------------ 0xffffa48643d02f90 0x00000064 xxxx 0xfffff807676d14f3 Nothing!DriverEntry+0x1d3 Contiguous allocations are not displayed with public symbols.Does CTRL+ALT+D show traffic? Do you think you have a LOT of leaked allocations?
-scott
OSR
Bill