On The Same Page - coming to the same conclusion as another engineer when looking at a memory dump or a software trace. Literally means the same page of memory where an exception occurred or a stack trace is reconstructed or the same “page” when browsing a software trace output using a viewer.
Examples: Aha, we are on the same page!
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Today we introduce an icon for Lateral Damage pattern:
B/W
Color
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
This is a new methodology I’m working upon. The idea came from reading “About the Author” page in a book I got yesterday in my post:
The Nomadic Developer: Surviving and Thriving in the World of Technology Consulting
I post a review here and on Amazon when finished reading. Just a few words now. This is the first career book I’m reading where I find pages in roman numerals useful. The page xiii itself looks like a good template (or an example) for a business-oriented CV summary. Thinking now about updating my CV book (2nd edition?):
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Today we introduce an icon for False Positive Dump pattern:
B/W
Color
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
While reading two balanced books about Trotsky I started to admire the Russian signature “С коммунистическим приветом, <имя>” (”S kommunisticheskim privetom, <name>”) that can be translated as “With communist greetings, <name>”. Did they laugh in their red sleeves? When I was at a primary school I loved History (that was long before I saw a computer at Moscow University and I loved Chemistry in secondary and high schools). In fact, to realize my childhood dream, OpenTask, an iterative and incremental publisher, plans to publish a centennial balanced 2 volume bilingual history of Russian revolutions (the work has began already): http://www.opentask.com/history-titles
While commuting today I devised a similar but rectangular 2×2 greeting:
With fix-privet,
Dr. Debuglove
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
When the performance is a performative and the performative is a performance we think about performability:
A virtualization is virtualization.
Peter Brook, The Empty Space
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Comments in italics are mine and express my own views, thoughts and opinions
Windows Internals by M. Russinovich, D. Solomon and A. Ionescu:
Clock cycle counter for measuring CPU activity (p. 382)
Process Explorer usage to inspect hung threads (p. 383) - useful for coupled processes (http://www.dumpanalysis.org/blog/index.php/2007/09/26/crash-dump-analysis-patterns-part-28/) and could be great with simultaneous WinDbg session to inspect wait chains (http://www.dumpanalysis.org/blog/index.php/2009/02/17/wait-chain-patterns/)
Process Explorer shows both thread and WOW64 thread stacks on x64 (p. 384)
Thread stack and context query limitations for protected processes (pp. 384 - 386)
Thread pool mechanism was moved into kernel space in Vista (p. 387)
TpWorkerFactory and I/O completion ports and KQUEUE (pp. 387 - 388) - see also a “brief guide” to I/O completion ports: http://www.dumpanalysis.org/blog/index.php/2007/11/27/understanding-io-completion-ports/
The mystery of ntdll!TppWorkerThread in stack traces (pp. 389 - 390)
Today we introduce an icon for Dynamic Memory Corruption (kernel pool) pattern:
B/W
Color
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Comments in italics are mine and express my own views, thoughts and opinions
Windows Internals by M. Russinovich, D. Solomon and A. Ionescu:
W32THREAD (p. 371) - One candidate in _ETHREAD that points to it is Tcb.Win32Thread. One interesting code I found on how to extract window message queues from it: http://www.cc.gatech.edu/~brendan/volatility/dl/threadqueues.py. _W32THREAD structure on x64 W2K8 (we also see that is points to _ETHREAD):
0: kd> dt _W32THREAD
win32k!_W32THREAD
+0x000 pEThread : Ptr64 _ETHREAD
+0x008 RefCount : Uint4B
+0x010 ptlW32 : Ptr64 _TL
+0x018 pgdiDcattr : Ptr64 Void
+0x020 pgdiBrushAttr : Ptr64 Void
+0x028 pUMPDObjs : Ptr64 Void
+0x030 pUMPDHeap : Ptr64 Void
+0x038 pUMPDObj : Ptr64 Void
+0x040 pProxyPort : Ptr64 Void
+0x048 pClientID : Ptr64 Void
+0x050 GdiTmpTgoList : _LIST_ENTRY
!thread output fields (p. 376) - Stack Base and Limit fields can be useful to dump raw stack data via dps command to see execution residue or when reconstructing stack trace, see, for example, this pattern: http://www.dumpanalysis.org/blog/index.php/2009/10/23/crash-dump-analysis-patterns-part-88/
tlist utility (p. 377)
Thread creation calls (pp. 380 - 381) - a condensed view of top level function calls on x64 W2K8:
0: kd> uf /c CreateThread
kernel32!CreateThread (00000000`7731c1c0)
kernel32!CreateThread+0x28 (00000000`7731c1e8):
call to kernel32!CreateRemoteThread (00000000`7731c200)
0: kd> uf /c CreateRemoteThread
Flow analysis was incomplete, some code may be missing
kernel32!CreateRemoteThread (00000000`7731c200)
kernel32!CreateRemoteThread+0x134 (00000000`7731c334):
call to ntdll!NtCreateThreadEx (00000000`77477790)
kernel32!CreateRemoteThread+0×166 (00000000`7731c366):
call to ntdll!RtlAllocateActivationContextStack (00000000`77456900)
kernel32!CreateRemoteThread+0×1b4 (00000000`7731c3b4):
call to ntdll!RtlQueryInformationActivationContext (00000000`77456b20)
kernel32!CreateRemoteThread+0×241 (00000000`7731c441):
call to ntdll!CsrClientCallServer (00000000`7747a460)
kernel32!CreateRemoteThread+0×281 (00000000`7731c47d):
call to ntdll!ZwResumeThread (00000000`77477230)
kernel32!CreateRemoteThread+0×38b (00000000`7731c4ae):
call to kernel32!_security_check_cookie (00000000`7732c200)
0: kd> uf /c NtCreateThreadEx
ntdll!NtCreateThreadEx (00000000`77477790)
no calls found
0: kd> uf NtCreateThreadEx
ntdll!NtCreateThreadEx:
00000000`77477790 4c8bd1 mov r10,rcx
00000000`77477793 b8a5000000 mov eax,0A5h
00000000`77477798 0f05 syscall
00000000`7747779a c3 ret
0: kd> uf /c nt!NtCreateThreadEx
nt!NtCreateThreadEx (fffff800`01af60fc)
nt!NtCreateThreadEx+0x3d (fffff800`01af6139):
call to nt!memset (fffff800`0187a4d0)
nt!NtCreateThreadEx+0x5b (fffff800`01af6157):
call to nt!memset (fffff800`0187a4d0)
nt!NtCreateThreadEx+0x99 (fffff800`01af6195):
call to nt!memset (fffff800`0187a4d0)
nt!NtCreateThreadEx+0xc8 (fffff800`01af61c4):
call to nt!PspBuildCreateProcessContext (fffff800`01af5204)
nt!NtCreateThreadEx+0x1e1 (fffff800`01af62dd):
call to nt!PspCreateThread (fffff800`01af5d40)
nt!NtCreateThreadEx+0×1f0 (fffff800`01af62ec):
call to nt!PspDeleteCreateProcessContext (fffff800`01af68f0)
0: kd> uf /c nt!PspCreateThread
nt!PspCreateThread (fffff800`01af5d40)
nt!PspCreateThread+0x102 (fffff800`01af5e42):
call to nt!ObReferenceObjectByHandle (fffff800`01ad8110)
nt!PspCreateThread+0x15b (fffff800`01af5e9b):
call to nt!ObfReferenceObject (fffff800`01883250)
nt!PspCreateThread+0x22f (fffff800`01af5f6f):
call to nt!PspAllocateThread (fffff800`01af6338)
nt!PspCreateThread+0x243 (fffff800`01af5f83):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!PspCreateThread+0x2a6 (fffff800`01af5fe6):
call to nt!PspInsertThread (fffff800`01af4c10)
nt!PspCreateThread+0x318 (fffff800`01af6058):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!PspCreateThread+0x32a (fffff800`01af606a):
call to nt!_security_check_cookie (fffff800`01895e50)
nt!PspCreateThread+0x36a (fffff800`01af60aa):
call to nt!ObfReferenceObject (fffff800`01883250)
nt!PspCreateThread+0x3a2 (fffff800`01af60e2):
call to nt!ExfAcquireRundownProtection (fffff800`0184f66c)
nt! ?? ::NNGAKEGL::`string'+0x2816e (fffff800`01b3628e):
call to nt!KiCheckForKernelApcDelivery (fffff800`0183c754)
nt! ?? ::NNGAKEGL::`string'+0x281ad (fffff800`01b362ca):
call to nt!ExfReleaseRundownProtection (fffff800`0184f690)
nt! ?? ::NNGAKEGL::`string'+0x281ce (fffff800`01b362eb):
call to nt!KiCheckForKernelApcDelivery (fffff800`0183c754)
nt! ?? ::NNGAKEGL::`string'+0x281d8 (fffff800`01b362f5):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt! ?? ::NNGAKEGL::`string'+0x281e7 (fffff800`01b36304):
call to nt!ExfReleaseRundownProtection (fffff800`0184f690)
nt! ?? ::NNGAKEGL::`string'+0x281ff (fffff800`01b3631c):
call to nt!KiCheckForKernelApcDelivery (fffff800`0183c754)
nt! ?? ::NNGAKEGL::`string'+0x2821a (fffff800`01b36337):
call to nt!PspTerminateThreadByPointer (fffff800`01ad30dc)
Today we introduce an icon for Dynamic Memory Corruption (process heap) pattern:
B/W
Color
Another alternative I considered to use is a chain metaphor but decided that it is more appropriate for linked lists.
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Just launched my game Blackjack, Jackpot and Slot applets written in pure Java 1.0 in 1997 and they still work in IE (I do launch them occasionally every few years):
http://vostokov.opentask.com/Applets.htm
Can’t believe it!
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Today we introduce an icon for Multiple Exceptions (kernel mode) pattern:
B/W
Color
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Just noticed that Memory Dump Analysis Anthology, Volume 3 is on a metaphysics bestseller list on Amazon DE today (the volume indeed has a few articles related to Memoidealism and memory dumps + memory traces worldview):
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
I borrowed a pattern icon idea from the book I’m reading now: Algorithms in a Nutshell
From now on, every memory dump analysis pattern (and later trace analysis patterns) will have platform-independent pictorial representation. Today we introduce an icon for Multiple Exceptions (user mode) pattern:
B/W
Color
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Sometimes we have a sequence of Activity Regions with increasing values of Statement Current, like depicted here:
The boundaries of regions may be blurry and arbitrarily drawn. Nevertheless, the current is visibly increasing or decreasing, hence the name of this pattern: Trace Acceleration, by analogy with physical acceleration, second-order derivative. We can also metaphorically use here the notion of a partial derivative for trace statement current and acceleration for Threads of Activity and Adjoint Threads of Activity but whether it is useful remains to be seen.
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
This is an extension of Thread of Activity pattern based on the concept of multibraiding and it is called Adjoint Thread of Activity correspondingly. I’m going to illustrate it soon when I publish a synthetic case study involving several software trace analysis patterns.
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
While reading Software Studies: A Lexicon (Leonardo Books) 
“The highest perfection of society is found in the union of order and anarchy.” ->
-> “The highest perfection of software is found in the union of order and anarchy.”
Therefore, a bugtation as paradigmatic substitution can be seen as specialised topical patching. It is also augmented with topical coloring:
“The highest perfection of” debugging “is found in the union of order and anarchy.”
Double patching now?
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Comments in italics are mine and express my own views, thoughts and opinions
Windows Internals by M. Russinovich, D. Solomon and A. Ionescu:
NtCreateProcess (pp. 349 - 351) - a condensed view of top level function calls on x64 W2K8:
0: kd> uf /c nt!NtCreateProcess
nt!NtCreateProcess (fffff800`01c51770)
nt!NtCreateProcess+0x64 (fffff800`01c517d4):
call to nt!NtCreateProcessEx (fffff800`01c516e0)
0: kd> uf /c nt!NtCreateProcessEx
nt!NtCreateProcessEx (fffff800`01c516e0)
nt!NtCreateProcessEx+0x7d (fffff800`01c5175d):
call to nt!PspCreateProcess (fffff800`01c51410)
0: kd> uf /c nt!PspCreateProcess
nt!PspCreateProcess (fffff800`01c51410)
nt!PspCreateProcess+0xd0 (fffff800`01c514e0):
call to nt!ObReferenceObjectByHandle (fffff800`01ad8110)
nt!PspCreateProcess+0xff (fffff800`01c5150f):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!PspCreateProcess+0x146 (fffff800`01c51556):
call to nt!ObReferenceObjectByHandle (fffff800`01ad8110)
nt!PspCreateProcess+0x1a6 (fffff800`01c515b6):
call to nt!PspAllocateProcess (fffff800`01aac690)
nt!PspCreateProcess+0x202 (fffff800`01c51612):
call to nt!PspInsertProcess (fffff800`01aa6520)
nt!PspCreateProcess+0x21b (fffff800`01c5162b):
call to nt!PspDoHandleSweepSingle (fffff800`01b92770)
nt!PspCreateProcess+0x26f (fffff800`01c5167f):
call to nt!SeDeleteAccessState (fffff800`01b02f8c)
nt!PspCreateProcess+0x27a (fffff800`01c5168a):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!PspCreateProcess+0x287 (fffff800`01c51697):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!PspCreateProcess+0x294 (fffff800`01c516a4):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!PspCreateProcess+0x2a7 (fffff800`01c516b7):
call to nt!_security_check_cookie (fffff800`01895e50)
NtCreateUserProcess (pp. 351 - 360) - a condensed view of top level function calls on x64 W2K8:
0: kd> uf /c nt!NtCreateUserProcess
nt!NtCreateUserProcess (fffff800`01ab2238)
nt!NtCreateUserProcess+0x97 (fffff800`01ab22cf):
call to nt!memset (fffff800`0187a4d0)
nt!NtCreateUserProcess+0xb4 (fffff800`01ab22ec):
call to nt!memset (fffff800`0187a4d0)
nt!NtCreateUserProcess+0x184 (fffff800`01ab23bc):
call to nt!ExRaiseDatatypeMisalignment (fffff800`01bddd20)
nt!NtCreateUserProcess+0x1c2 (fffff800`01ab23fb):
call to nt!memset (fffff800`0187a4d0)
nt!NtCreateUserProcess+0x1dd (fffff800`01ab2416):
call to nt!PspBuildCreateProcessContext (fffff800`01af5204)
nt!NtCreateUserProcess+0x207 (fffff800`01ab2440):
call to nt!PspCaptureCreateInfo (fffff800`01aad390)
nt!NtCreateUserProcess+0x2d1 (fffff800`01ab250a):
call to nt!ZwOpenFile (fffff800`01873480)
nt!NtCreateUserProcess+0x311 (fffff800`01ab254a):
call to nt!ObReferenceObjectByHandle (fffff800`01ad8110)
nt!NtCreateUserProcess+0x378 (fffff800`01ab25b1):
call to nt!ZwCreateSection (fffff800`01873760)
nt!NtCreateUserProcess+0x3af (fffff800`01ab25e8):
call to nt!ObReferenceObjectByHandle (fffff800`01ad8110)
nt!NtCreateUserProcess+0x412 (fffff800`01ab264b):
call to nt!PspCaptureProcessParameters (fffff800`01aae128)
nt!NtCreateUserProcess+0x483 (fffff800`01ab26bc):
call to nt!PspAllocateProcess (fffff800`01aac690)
nt!NtCreateUserProcess+0x546 (fffff800`01ab277f):
call to nt!ObfReferenceObject (fffff800`01883250)
nt!NtCreateUserProcess+0x630 (fffff800`01ab2869):
call to nt!PspAllocateThread (fffff800`01af6338)
nt!NtCreateUserProcess+0x69f (fffff800`01ab28d8):
call to nt!PspInsertProcess (fffff800`01aa6520)
nt!NtCreateUserProcess+0x70e (fffff800`01ab2947):
call to nt!PspInsertThread (fffff800`01af4c10)
nt!NtCreateUserProcess+0x74f (fffff800`01ab2988):
call to nt!PspCreateObjectHandle (fffff800`01b01e10)
nt!NtCreateUserProcess+0x775 (fffff800`01ab29ae):
call to nt!memmove (fffff800`0186fce0)
nt!NtCreateUserProcess+0x7ca (fffff800`01ab2a03):
call to nt!PspUpdateCreateInfo (fffff800`01aadc9c)
nt!NtCreateUserProcess+0x7d9 (fffff800`01ab2a12):
call to nt!SeDeleteAccessState (fffff800`01b02f8c)
nt!NtCreateUserProcess+0x7e9 (fffff800`01ab2a22):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!NtCreateUserProcess+0x7f1 (fffff800`01ab2a2a):
call to nt!ObfDereferenceObject (fffff800`0187cde0)
nt!NtCreateUserProcess+0x7fe (fffff800`01ab2a37):
call to nt!PspDeleteCreateProcessContext (fffff800`01af68f0)
nt!NtCreateUserProcess+0x810 (fffff800`01ab2a49):
call to nt!_security_check_cookie (fffff800`01895e50)
nt!NtCreateUserProcess+0x862 (fffff800`01ab2a9b):
call to nt!ZwOpenFile (fffff800`01873480)
nt!NtCreateUserProcess+0x884 (fffff800`01ab2abd):
call to nt!PspUpdateCreateInfo (fffff800`01aadc9c)
nt! ?? ::NNGAKEGL::`string'+0x4f944 (fffff800`01b55164):
call to nt!ObReferenceObjectByHandle (fffff800`01ad8110)
nt! ?? ::NNGAKEGL::`string'+0x4f9a5 (fffff800`01b551c5):
call to nt!PspUpdateCreateInfo (fffff800`01aadc9c)
nt! ?? ::NNGAKEGL::`string'+0x4fa80 (fffff800`01b55298):
call to nt!PspGetContextThreadInternal (fffff800`01b02660)
nt! ?? ::NNGAKEGL::`string'+0x4faf3 (fffff800`01b55303):
call to nt!ExfTryToWakePushLock (fffff800`0186b924)
nt! ?? ::NNGAKEGL::`string'+0x4fb21 (fffff800`01b55325):
call to nt!KiCheckForKernelApcDelivery (fffff800`0183c754)
nt! ?? ::NNGAKEGL::`string'+0x4fb3e (fffff800`01b55342):
call to nt!PspDoHandleSweepSingle (fffff800`01b92770)
nt! ?? ::NNGAKEGL::`string'+0x4fb92 (fffff800`01b55392):
call to nt!KiCheckForKernelApcDelivery (fffff800`0183c754)
nt! ?? ::NNGAKEGL::`string'+0x4fba0 (fffff800`01b553a0):
call to nt!PspDoHandleSweepSingle (fffff800`01b92770)
nt! ?? ::NNGAKEGL::`string'+0x4fbb2 (fffff800`01b553b2):
call to nt!PsTerminateProcess (fffff800`01b94140)
The check for import of disallowed API during post-process initialization (p. 361)
CsrCreateProcess (pp. 361 - 362) - Here’s a condensed view of top level function calls on x64 W2K8:
0: kd> uf /c CsrCreateProcess
CSRSRV!CsrCreateProcess (000007fe`fd8c76c8)
CSRSRV!CsrCreateProcess+0x18 (000007fe`fd8c76e0):
call to CSRSRV!CsrpCreateProcess (000007fe`fd8c7280)
0: kd> uf /c CsrpCreateProcess
CSRSRV!CsrpCreateProcess (000007fe`fd8c7280)
CSRSRV!CsrpCreateProcess+0x2e (000007fe`fd8c72ae):
call to ntdll!RtlEnterCriticalSection (00000000`77478920)
CSRSRV!CsrpCreateProcess+0x66 (000007fe`fd8c72e6):
call to CSRSRV!CsrCreateThread (000007fe`fd8c77fc)
CSRSRV!CsrpCreateProcess+0x78 (000007fe`fd8c72f8):
call to ntdll!ZwClose (00000000`77476e00)
CSRSRV!CsrpCreateProcess+0x83 (000007fe`fd8c7303):
call to CSRSRV!CsrAllocateProcess (000007fe`fd8c715c)
CSRSRV!CsrpCreateProcess+0xa4 (000007fe`fd8c7324):
call to CSRSRV!CsrGetProcessLuid (000007fe`fd8c8790)
CSRSRV!CsrpCreateProcess+0x114 (000007fe`fd8c7394):
call to CSRSRV!memcpy (000007fe`fd8cadec)
CSRSRV!CsrpCreateProcess+0x1ab (000007fe`fd8c742b):
call to ntdll!NtSetInformationProcess (00000000`77476ed0)
CSRSRV!CsrpCreateProcess+0x1d2 (000007fe`fd8c7452):
call to ntdll!NtSetInformationProcess (00000000`77476ed0)
CSRSRV!CsrpCreateProcess+0x257 (000007fe`fd8c74d7):
call to ntdll!NtSetInformationProcess (00000000`77476ed0)
CSRSRV!CsrpCreateProcess+0x277 (000007fe`fd8c74f7):
call to ntdll!RtlFreeHeap (00000000`77478c80)
CSRSRV!CsrpCreateProcess+0x2d8 (000007fe`fd8c7558):
call to ntdll!NtQueryInformationThread (00000000`77476f60)
CSRSRV!CsrpCreateProcess+0x2f0 (000007fe`fd8c7570):
call to ntdll!RtlFreeHeap (00000000`77478c80)
CSRSRV!CsrpCreateProcess+0x2fd (000007fe`fd8c757d):
call to CSRSRV!CsrAllocateThread (000007fe`fd8c7b94)
CSRSRV!CsrpCreateProcess+0x32d (000007fe`fd8c75ad):
call to CSRSRV!CsrInsertThread (000007fe`fd8c7bfc)
CSRSRV!CsrpCreateProcess+0x344 (000007fe`fd8c75c4):
call to ntdll!RtlFreeHeap (00000000`77478c80)
CSRSRV!CsrpCreateProcess+0x356 (000007fe`fd8c75d6):
call to ntdll!RtlFreeHeap (00000000`77478c80)
CSRSRV!CsrpCreateProcess+0x365 (000007fe`fd8c75e5):
call to ntdll!RtlLeaveCriticalSection (00000000`77478960)
CSRSRV!CsrpCreateProcess+0x393 (000007fe`fd8c7613):
call to CSRSRV!CsrSetBackgroundPriority (000007fe`fd8c712c)
CSRSRV!CsrpCreateProcess+0x3b6 (000007fe`fd8c7636):
call to CSRSRV!CsrInsertProcess (000007fe`fd8c71f0)
CSRSRV!CsrpCreateProcess+0x3d8 (000007fe`fd8c7658):
call to ntdll!RtlLeaveCriticalSection (00000000`77478960)
No elevation, virtualization and compatibility checks for protected processes (p. 362)
KiThreadStartup (p. 363) - it looks like on x64 W2K8 it is KxStartUserThread that has this high-level call structure:
0: kd> uf /c nt!KxStartUserThread
nt!KxStartUserThread (fffff800`018b56e0)
nt!KiStartUserThread+0x12 (fffff800`018b5756):
unresolvable call: call qword ptr [rsp+10h]
nt!KiStartUserThread+0x9f (fffff800`018b57e3):
call to nt!KiInitiateUserApc (fffff800`0189d710)
nt!KiStartUserThread+0xbc (fffff800`018b5800):
call to nt!KiRestoreDebugRegisterState (fffff800`01878860)
PspUserThreadStartup (p. 363) - high-level call structure on x64 W2K8
0: kd> uf /c PspUserThreadStartup
nt!PspUserThreadStartup (fffff800`01b01ae4)
nt!PspUserThreadStartup+0xa1 (fffff800`01b01b85):
call to nt!MmGetSessionLocaleId (fffff800`01b028a4)
nt!PspUserThreadStartup+0xdc (fffff800`01b01bc0):
call to nt!DbgkCreateThread (fffff800`01b02cc0)
nt!PspUserThreadStartup+0x100 (fffff800`01b01be4):
call to nt!PfProcessCreateNotification (fffff800`01ab46cc)
nt!PspUserThreadStartup+0x121 (fffff800`01b01c05):
call to nt!PspInitializeThunkContext (fffff800`01b028e4)
nt! ?? ::NNGAKEGL::`string'+0x42263 (fffff800`01b48d5a):
call to nt!ExfAcquirePushLockExclusive (fffff800`0186aa60)
nt! ?? ::NNGAKEGL::`string'+0x4226b (fffff800`01b48d62):
call to nt!ExfReleasePushLockExclusive (fffff800`018c4b98)
nt! ?? ::NNGAKEGL::`string'+0x42283 (fffff800`01b48d7a):
call to nt!KiCheckForKernelApcDelivery (fffff800`0183c754)
nt! ?? ::NNGAKEGL::`string'+0x42299 (fffff800`01b48d90):
call to nt!PspTerminateThreadByPointer (fffff800`01ad30dc)
System-wide cookie in SharedUserData for pointer encoding/decoding API (p. 363)
LdrInitializeThunk (p. 364) - high-level call structure on x64 W2K8
0: kd> uf /c LdrInitializeThunk
ntdll!LdrInitializeThunk (00000000`774568d0)
ntdll!LdrInitializeThunk+0x9 (00000000`774568d9):
call to ntdll!LdrpInitialize (00000000`77456990)
ntdll!LdrInitializeThunk+0×13 (00000000`774568e3):
call to ntdll!ZwContinue (00000000`77477140)
ntdll!LdrInitializeThunk+0×1a (00000000`774568ea):
call to ntdll!RtlRaiseStatus (00000000`774e8fa0)
ntdll!RtlAllocateActivationContextStack+0×29 (00000000`7745692d):
call to ntdll!RtlAllocateHeap (00000000`774789b0)
0: kd> uf /c LdrpInitialize
Matched: 00000000`774567f0 ntdll!LdrpInitialize = <no type information>
Matched: 00000000`77456990 ntdll!LdrpInitialize = <no type information>
Ambiguous symbol error at ‘LdrpInitialize’
0: kd> uf /c 00000000`77456990
Flow analysis was incomplete, some code may be missing
ntdll!LdrpInitialize (00000000`77456990)
ntdll!LdrpInitialize+0xaa (00000000`7745689a):
call to ntdll!LdrpInitializeThread (00000000`77470770)
ntdll!LdrpInitialize+0xaf (00000000`7745689f):
call to ntdll!ZwTestAlert (00000000`77478490)
ntdll! ?? ::FNODOBFM::`string’+0×20948 (00000000`7746bb8b):
call to ntdll!RtlInitializeSRWLock (00000000`774687f0)
ntdll! ?? ::FNODOBFM::`string’+0×20954 (00000000`7746bb97):
call to ntdll!LdrpInitializeProcess (00000000`7746ca20)
ntdll! ?? ::FNODOBFM::`string’+0×20b40 (00000000`7746d540):
call to ntdll!InitSecurityCookie (00000000`7746d560)
ntdll! ?? ::FNODOBFM::`string’+0×20ae4 (00000000`7746e52f):
call to ntdll!NtDelayExecution (00000000`77477050)
0: kd> uf /c ntdll!LdrpInitializeThread
ntdll!LdrpInitializeThread (00000000`77470770)
ntdll!LdrShutdownThread+0x139 (00000000`77437544):
call to ntdll!LdrpCallTlsInitializers (00000000`77437630)
ntdll!LdrpInitializeThread+0x16d (00000000`774376f8):
call to ntdll!LdrpCallTlsInitializers (00000000`77437630)
ntdll!LdrShutdownThread+0x124 (00000000`77448199):
call to ntdll!RtlActivateActivationContextUnsafeFast (00000000`77478bf0)
ntdll!LdrShutdownThread+0x149 (00000000`774481b5):
unresolvable call: call rsi
ntdll!LdrShutdownThread+0x151 (00000000`774481bd):
call to ntdll!RtlDeactivateActivationContextUnsafeFast (00000000`77478b00)
ntdll!LdrShutdownThread+0x68 (00000000`77448238):
call to ntdll!RtlEnterCriticalSection (00000000`77478920)
ntdll!LdrShutdownThread+0x1cd (00000000`774483cf):
call to ntdll!LdrpFreeTls (00000000`774482f0)
ntdll!LdrShutdownThread+0x1e1 (00000000`774483e3):
call to ntdll!RtlLeaveCriticalSection (00000000`77478960)
ntdll!LdrShutdownThread+0x1e6 (00000000`774483e8):
call to ntdll!LdrpCleanupThreadTlsData (00000000`77448490)
ntdll!LdrShutdownThread+0x213 (00000000`77448415):
call to ntdll!RtlFreeHeap (00000000`77478c80)
ntdll!LdrShutdownThread+0x246 (00000000`77448448):
call to ntdll!RtlFreeActivationContextStack (00000000`774480a0)
ntdll!LdrpInitializeThread+0x264 (00000000`774706bf):
call to ntdll!RtlLeaveCriticalSection (00000000`77478960)
ntdll!LdrpInitializeThread+0x43 (00000000`774707b3):
call to ntdll!RtlAllocateActivationContextStack (00000000`77456900)
ntdll!LdrpInitializeThread+0x5f (00000000`774707cf):
call to ntdll!RtlEnterCriticalSection (00000000`77478920)
ntdll!LdrpInitializeThread+0x65 (00000000`774707d5):
call to ntdll!LdrpAllocateTls (00000000`774569d0)
ntdll!LdrpInitializeThread+0x13e (00000000`774708ae):
call to ntdll!RtlActivateActivationContextUnsafeFast (00000000`77478bf0)
ntdll!LdrpInitializeThread+0x161 (00000000`774708d5):
unresolvable call: call rsi
ntdll!LdrpInitializeThread+0x17c (00000000`774708e1):
call to ntdll!RtlDeactivateActivationContextUnsafeFast (00000000`77478b00)
ntdll!LdrpInitializeThread+0x1a9 (00000000`7749017c):
call to ntdll!RtlRaiseStatus (00000000`774e8fa0)
ntdll!LdrpInitializeThread+0x1b5 (00000000`77490188):
call to ntdll!RtlLeaveCriticalSection (00000000`77478960)
ntdll!LdrpInitializeThread+0x1d0 (00000000`774901a3):
call to ntdll!NtDelayExecution (00000000`77477050)
ntdll!LdrpInitializeThread+0x1dc (00000000`774901af):
call to ntdll!RtlEnterCriticalSection (00000000`77478920)
ntdll!LdrpInitializeThread+0x233 (00000000`7749020a):
call to ntdll!RtlActivateActivationContextUnsafeFast (00000000`77478bf0)
ntdll!LdrpInitializeThread+0x245 (00000000`7749021c):
call to ntdll!LdrpCallTlsInitializers (00000000`77437630)
ntdll!LdrpInitializeThread+0x250 (00000000`77490227):
call to ntdll!RtlDeactivateActivationContextUnsafeFast (00000000`77478b00)
ntdll!LdrShutdownThread+0x1ab (00000000`7749027e):
call to ntdll!RtlActivateActivationContextUnsafeFast (00000000`77478bf0)
ntdll!LdrShutdownThread+0x1bd (00000000`77490290):
call to ntdll!LdrpCallTlsInitializers (00000000`77437630)
ntdll!LdrShutdownThread+0x1c8 (00000000`7749029b):
call to ntdll!RtlDeactivateActivationContextUnsafeFast (00000000`77478b00)
ntdll! ?? ::FNODOBFM::`string'+0x15c61 (00000000`774bd160):
call to ntdll!NtDelayExecution (00000000`77477050)
ntdll! ?? ::FNODOBFM::`string'+0x15c6e (00000000`774bd16d):
call to ntdll!RtlRaiseStatus (00000000`774e8fa0)
ntdll! ?? ::FNODOBFM::`string'+0x15cb0 (00000000`774bd1a6):
call to ntdll!RtlEnterCriticalSection (00000000`77478920)
ntdll! ?? ::FNODOBFM::`string'+0x15cbc (00000000`774bd1b2):
call to ntdll!RtlLeaveCriticalSection (00000000`77478960)
ntdll! ?? ::FNODOBFM::`string'+0x15cd7 (00000000`774bd1cd):
call to ntdll!RtlFreeHeap (00000000`77478c80)
ntdll! ?? ::FNODOBFM::`string'+0x15cfd (00000000`774bd1f3):
call to ntdll!RtlFreeHeap (00000000`77478c80)
0: kd> uf /c ntdll!LdrpInitializeProcess
Flow analysis was incomplete, some code may be missing
ntdll!LdrpInitializeProcess (00000000`7746ca20)
ntdll!LdrpInitializeProcess+0xf88 (00000000`7746bc0d):
call to ntdll!LdrpUpdateOrderLinks (00000000`774644c0)
ntdll!LdrpInitializeProcess+0xf9c (00000000`7746bc21):
call to ntdll!RtlInsertInvertedFunctionTable (00000000`77464e50)
ntdll!LdrpInitializeProcess+0xfa4 (00000000`7746bc29):
call to ntdll!LdrpAllocateDataTableEntry (00000000`77464380)
ntdll!LdrpInitializeProcess+0x1098 (00000000`7746bc76):
call to ntdll!RtlImageNtHeaderEx (00000000`7747dc00)
ntdll!LdrpInitializeProcess+0x10f1 (00000000`7746bccd):
call to ntdll!RtlAppendUnicodeStringToString (00000000`774574b0)
ntdll!LdrpInitializeProcess+0x110f (00000000`7746bceb):
call to ntdll!LdrpUpdateOrderLinks (00000000`774644c0)
ntdll!LdrpInitializeProcess+0x1123 (00000000`7746bcff):
call to ntdll!RtlInsertInvertedFunctionTable (00000000`77464e50)
ntdll!LdrpInitializeProcess+0x1128 (00000000`7746bd04):
call to ntdll!RtlInitializeHistoryTable (00000000`7746da90)
ntdll!LdrpInitializeProcess+0x11c9 (00000000`7746bd4f):
call to ntdll!RtlpInitCurrentDir (00000000`7746db70)
ntdll!LdrpInitializeProcess+0x1648 (00000000`7746bdca):
call to ntdll!LdrLoadDll (00000000`77463e30)
ntdll!LdrpInitializeProcess+0x16ba (00000000`7746bdf9):
call to ntdll!LdrGetProcedureAddressEx (00000000`7747dd10)
ntdll!LdrpInitializeProcess+0x171f (00000000`7746be16):
call to ntdll!LdrpWalkImportDescriptor (00000000`77466390)
ntdll!LdrpInitializeProcess+0x18cd (00000000`7746be5b):
call to ntdll!LdrpInitializeTls (00000000`7746e380)
ntdll!LdrpInitializeProcess+0x1940 (00000000`7746be88):
call to ntdll!LdrpRunInitializeRoutines (00000000`77464650)
ntdll!LdrpInitializeProcess+0x138e (00000000`7746bedf):
call to ntdll!LdrLoadDll (00000000`77463e30)
ntdll!LdrpInitializeProcess+0x13ff (00000000`7746bf0d):
call to ntdll!LdrGetProcedureAddressEx (00000000`7747dd10)
ntdll!LdrpInitializeProcess+0x1475 (00000000`7746bf3b):
call to ntdll!LdrGetProcedureAddressEx (00000000`7747dd10)
ntdll!LdrpInitializeProcess+0x14eb (00000000`7746bf69):
call to ntdll!LdrGetProcedureAddressEx (00000000`7747dd10)
ntdll!LdrpInitializeProcess+0x19f5 (00000000`7746bfc5):
call to ntdll!_security_check_cookie (00000000`7747acb0)
ntdll!LdrpInitializeProcess+0x32 (00000000`7746ca52):
call to ntdll!RtlSetUnhandledExceptionFilter (00000000`7746c2d0)
ntdll!LdrpInitializeProcess+0xe9 (00000000`7746ca9a):
call to ntdll!RtlInitNlsTables (00000000`7746c920)
ntdll!LdrpInitializeProcess+0xf6 (00000000`7746caa7):
call to ntdll!RtlResetRtlTranslations (00000000`7746c410)
ntdll!LdrpInitializeProcess+0xfe (00000000`7746caaf):
call to ntdll!RtlpInitSRWLock (00000000`7746c530)
ntdll!LdrpInitializeProcess+0x103 (00000000`7746cab4):
call to ntdll!RtlpInitConditionVariable (00000000`7746c550)
ntdll!LdrpInitializeProcess+0x213 (00000000`7746cb7d):
call to ntdll!RtlImageNtHeader (00000000`774567b0)
ntdll!LdrpInitializeProcess+0x273 (00000000`7746cbd7):
call to ntdll!LdrpInitializeExecutionOptions (00000000`7746c6b0)
ntdll!LdrpInitializeProcess+0x353 (00000000`7746cc2f):
call to ntdll!RtlImageDirectoryEntryToData (00000000`7746a940)
ntdll!LdrpInitializeProcess+0x3cd (00000000`7746cc95):
call to ntdll!RtlNormalizeProcessParams (00000000`7746c2f0)
ntdll!LdrpInitializeProcess+0x423 (00000000`7746cce3):
call to ntdll!RtlImageDirectoryEntryToData (00000000`7746a940)
ntdll!LdrpInitializeProcess+0x448 (00000000`7746cd02):
call to ntdll!memset (00000000`77478830)
ntdll!LdrpInitializeProcess+0x58c (00000000`7746cd53):
call to ntdll!RtlpInitDeferredCriticalSection (00000000`7746c640)
ntdll!LdrpInitializeProcess+0x7d5 (00000000`7746ceb5):
call to ntdll!RtlInitializeCriticalSection (00000000`77455d20)
ntdll!LdrpInitializeProcess+0x7fb (00000000`7746cedb):
call to ntdll!RtlInitializeHeapManager (00000000`7746c7a0)
ntdll!LdrpInitializeProcess+0x84b (00000000`7746cf2a):
call to ntdll!RtlCreateHeap (00000000`77466ed0)
ntdll!LdrpInitializeProcess+0x8e2 (00000000`7746cf51):
call to ntdll!RtlAllocateActivationContextStack (00000000`77456900)
ntdll!LdrpInitializeProcess+0x8f6 (00000000`7746cf65):
call to ntdll!EtwpInitializeDll (00000000`7746c250)
ntdll!LdrpInitializeProcess+0x916 (00000000`7746cf85):
call to ntdll!RtlCreateTagHeap (00000000`7746d320)
ntdll!LdrpInitializeProcess+0x942 (00000000`7746cfb1):
call to ntdll!RtlCreateTagHeap (00000000`7746d320)
ntdll!LdrpInitializeProcess+0x962 (00000000`7746cfd1):
call to ntdll!RtlpInitEnvironmentBlock (00000000`7746d380)
ntdll!LdrpInitializeProcess+0x96f (00000000`7746cfde):
call to ntdll!RtlpInitParameterBlock (00000000`7746d7f0)
ntdll!LdrpInitializeProcess+0xa5e (00000000`7746d068):
call to ntdll!RtlInitUnicodeString (00000000`7747ad10)
ntdll!LdrpInitializeProcess+0xa73 (00000000`7746d07d):
call to ntdll!RtlAppendUnicodeStringToString (00000000`774574b0)
ntdll!LdrpInitializeProcess+0xa87 (00000000`7746d091):
call to ntdll!RtlAppendUnicodeStringToString (00000000`774574b0)
ntdll!LdrpInitializeProcess+0xaf0 (00000000`7746d0fe):
call to ntdll!ZwOpenDirectoryObject (00000000`77477290)
ntdll!LdrpInitializeProcess+0xc2a (00000000`7746d171):
call to ntdll!ZwOpenSymbolicLinkObject (00000000`77477cb0)
ntdll!LdrpInitializeProcess+0xc6b (00000000`7746d1b2):
call to ntdll!ZwQuerySymbolicLinkObject (00000000`77477f60)
ntdll!LdrpInitializeProcess+0xc7a (00000000`7746d1c1):
call to ntdll!ZwClose (00000000`77476e00)
ntdll!LdrpInitializeProcess+0xe50 (00000000`7746d24d):
call to ntdll!LdrpAllocateDataTableEntry (00000000`77464380)
ntdll!LdrpInitializeProcess+0xee4 (00000000`7746d289):
call to ntdll!RtlImageNtHeaderEx (00000000`7747dc00)
ntdll!LdrpInitializeProcess+0x30d (00000000`77473eb0):
call to ntdll!NtQueryInformationProcess (00000000`77476ea0)
ntdll!LdrpInitializeProcess+0x635 (00000000`77473ef0):
call to ntdll!RtlSetBits (00000000`77466c00)
ntdll!LdrpInitializeProcess+0x873 (00000000`77473f19):
call to ntdll!RtlCreateHeap (00000000`77466ed0)
ntdll!LdrpInitializeProcess+0xbb8 (00000000`774744f9):
call to ntdll!ZwOpenDirectoryObject (00000000`77477290)
ntdll!LdrpInitializeProcess+0xe10 (00000000`77474554):
call to ntdll!RtlAppendUnicodeStringToString (00000000`774574b0)
ntdll!LdrpInitializeProcess+0x77 (00000000`77490a96):
call to ntdll!NtQueryVirtualMemory (00000000`77476f40)
ntdll!LdrpInitializeProcess+0xb3 (00000000`77490ad2):
call to ntdll!NtQueryVirtualMemory (00000000`77476f40)
ntdll!LdrpInitializeProcess+0x2d2 (00000000`77490b92):
call to ntdll!LdrpLogDbgPrint (00000000`774ec5a0)
ntdll!LdrpInitializeProcess+0x2db (00000000`77490b9d):
call to ntdll!DbgBreakPoint (00000000`77476060)
ntdll!LdrpInitializeProcess+0x720 (00000000`77490d34):
call to ntdll!LdrQueryImageFileExecutionOptions (00000000`77473260)
ntdll!LdrpInitializeProcess+0x790 (00000000`77490da4):
call to ntdll!LdrpLogDbgPrint (00000000`774ec5a0)
ntdll!LdrpInitializeProcess+0x79a (00000000`77490dae):
call to ntdll!DbgBreakPoint (00000000`77476060)
ntdll!LdrpInitializeProcess+0x7c6 (00000000`77490dda):
call to ntdll!RtlControlStackTraceDataBase (00000000`774e3cd0)
ntdll!LdrpInitializeProcess+0x8ac (00000000`77490e27):
call to ntdll!LdrpLogDbgPrint (00000000`774ec5a0)
ntdll!LdrpInitializeProcess+0x8bf (00000000`77490e3a):
call to ntdll!DbgBreakPoint (00000000`77476060)
ntdll!LdrpInitializeProcess+0x9ff (00000000`77490e8c):
call to ntdll!RtlQueryImageFileKeyOption (00000000`77473320)
ntdll!LdrpInitializeProcess+0xb0f (00000000`77490ee2):
call to ntdll!RtlInitUnicodeString (00000000`7747ad10)
ntdll!LdrpInitializeProcess+0xcea (00000000`77490f57):
call to ntdll!LdrpLogDbgPrint (00000000`774ec5a0)
ntdll!LdrpInitializeProcess+0xd01 (00000000`77490f6e):
call to ntdll!LdrpInitializationFailure (00000000`774ed120)
ntdll!LdrpInitializeProcess+0xd3f (00000000`77490f82):
call to ntdll!RtlAllocateHeap (00000000`774789b0)
ntdll!LdrpInitializeProcess+0xd7d (00000000`77490fc0):
call to ntdll!LdrpLogDbgPrint (00000000`774ec5a0)
ntdll!LdrpInitializeProcess+0xd90 (00000000`77490fd3):
call to ntdll!DbgBreakPoint (00000000`77476060)
Private vs. shared assemblies (p. 365)
Memoriarch
The highest title in Memorianic religious hierarchy. Equivalent to similar titles of Pope, Patriarch or Archbishop. Derived from Memoria (Latin, memory) and arch (Latin root, chief, first, rule).
- Dmitry Vostokov @ Memory Religion Portal -
This post was motivated during my work on a memory dump differing tool called DumpLogic that can do logical and arithmetic operations between memory snapshots, for example, take a difference between them for further visualization. This tool is forthcoming next week and it resulted in another simple tool called DumpFilter. The latter allows to filter certain unsigned integer (DWORD) values from a memory dump (or any binary file) by replacing them with 0xFFFFFFFF and all other values with 0×00000000. The resultant binary file can be visualized by any data visualization package or transformed to a bitmap file using Dump2Picture to see distribution of filtered values.
As a filtering example I used TestDefaultDebugger64 to generate a process user memory dump. It was converted to a BMP file by Dump2Picture:
Then I filtered only AV exception code 0xc0000005:
C:\>DumpFilter tdd64.dmp tdd64.bin <dwords.txt
dwords.txt just contained one line
c0000005
It is possible to filter many values. Just put more lines to dwords.txt file. tdd64.bin was converted to tdd64.bmp by Dump2Picture:
C:\>Dump2Picture tdd64.bin tdd64.bmp
Because the image had only black and while RGBA colors I saved it as a B/W bitmap (click to enlarge, it is a 3236×3236 1.3Mb bitmap):
Every EV exception code is a white dot there but it is difficult to see them unless magnified. So I enlarged them manually on the following map:
I put them on the original image too. We can see that exception processing spans many areas:
The tool and the sample dwords.txt file (for c0000005 and 80000003) can be downloaded from this location:
Another example: Night Sky memory space art image is just a fragment after filtering all 1 values from another process memory dump.
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
