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[NTOS:KD64] Correctly initialize the KdPrint buffer data in KdDebuggerDataBlock so as to fix the WinDbg !dbgprint command.

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Now, !dbgprint just shows an empty log (since we don't fill it), instead
of showing the following error:

  kd> !dbgprint
  Can't find DbgPrint buffer
This commit is contained in:
Hermès Bélusca-Maïto 2022-11-23 18:19:41 +01:00
parent de81021bab
commit 36335d9cee
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GPG key ID: 3B2539C65E7B93D0
2 changed files with 12 additions and 7 deletions
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11
ntoskrnl/include/internal/kd64.h
View file

@ -17,6 +17,11 @@
#define KD_DEFAULT_LOG_BUFFER_SIZE 0x1000
#endif
//
// Default size of the Message and Path buffers
//
#define KDP_MSG_BUFFER_SIZE 0x1000
//
// Maximum supported number of breakpoints
//
@ -511,8 +516,7 @@ VOID
__cdecl
KdpDprintf(
_In_ PCHAR Format,
...
);
...);
BOOLEAN
NTAPI
@ -552,7 +556,8 @@ extern BOOLEAN KdpContextSent;
extern KSPIN_LOCK KdpDebuggerLock;
extern LARGE_INTEGER KdTimerStop, KdTimerStart, KdTimerDifference;
extern CHAR KdpMessageBuffer[0x1000], KdpPathBuffer[0x1000];
extern CHAR KdpMessageBuffer[KDP_MSG_BUFFER_SIZE];
extern CHAR KdpPathBuffer[KDP_MSG_BUFFER_SIZE];
extern CHAR KdPrintDefaultCircularBuffer[KD_DEFAULT_LOG_BUFFER_SIZE];
extern BREAKPOINT_ENTRY KdpBreakpointTable[KD_BREAKPOINT_MAX];
extern KD_BREAKPOINT_TYPE KdpBreakpointInstruction;

8
ntoskrnl/kd64/kddata.c
View file

@ -124,8 +124,8 @@ LARGE_INTEGER KdTimerStop, KdTimerStart, KdTimerDifference;
//
// Buffers
//
CHAR KdpMessageBuffer[0x1000];
CHAR KdpPathBuffer[0x1000];
CHAR KdpMessageBuffer[KDP_MSG_BUFFER_SIZE];
CHAR KdpPathBuffer[KDP_MSG_BUFFER_SIZE];
//
// KdPrint Buffers
@ -593,7 +593,7 @@ KDDEBUGGER_DATA64 KdDebuggerDataBlock =
PtrToUL64(&MmSystemRangeStart),
PtrToUL64(&MmUserProbeAddress),
PtrToUL64(KdPrintDefaultCircularBuffer),
PtrToUL64(KdPrintDefaultCircularBuffer + 1),
PtrToUL64(KdPrintDefaultCircularBuffer + sizeof(KdPrintDefaultCircularBuffer)),
PtrToUL64(&KdPrintWritePointer),
PtrToUL64(&KdPrintRolloverCount),
PtrToUL64(&MmLoadedUserImageList),
@ -636,7 +636,7 @@ KDDEBUGGER_DATA64 KdDebuggerDataBlock =
FIELD_OFFSET(KPRCB, ProcessorState.ContextFrame),
FIELD_OFFSET(KPRCB, Number),
sizeof(ETHREAD),
PtrToUL64(&KdPrintDefaultCircularBuffer),
PtrToUL64(&KdPrintCircularBuffer),
PtrToUL64(&KdPrintBufferSize),
PtrToUL64(&KeLoaderBlock),
sizeof(KPCR),