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fixup

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donnaskiez 2024-05-06 00:07:33 +10:00
parent e1a5a78db0
commit 08beb2e036
1 changed files with 30 additions and 31 deletions
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59
driver/modules.c
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@ -722,8 +722,8 @@ NmiCallback(_Inout_opt_ PVOID Context, _In_ BOOLEAN Handled)
{
UNREFERENCED_PARAMETER(Handled);
PNMI_CONTEXT context = (PNMI_CONTEXT)Context;
ULONG core = KeGetCurrentProcessorNumber();
PNMI_CONTEXT context = &((PNMI_CONTEXT)Context)[core];
UINT64 kpcr = 0;
TASK_STATE_SEGMENT_64* tss = NULL;
PMACHINE_FRAME machine_frame = NULL;
@ -745,12 +745,12 @@ NmiCallback(_Inout_opt_ PVOID Context, _In_ BOOLEAN Handled)
machine_frame = GetIsrMachineFrame(tss);
if (IsUserModeAddress(machine_frame->rip))
context[core].user_thread = TRUE;
context->user_thread = TRUE;
context[core].interrupted_rip = machine_frame->rip;
context[core].interrupted_rsp = machine_frame->rsp;
context[core].kthread = PsGetCurrentThread();
context[core].callback_count++;
context->interrupted_rip = machine_frame->rip;
context->interrupted_rsp = machine_frame->rsp;
context->kthread = PsGetCurrentThread();
context->callback_count++;
DEBUG_VERBOSE(
"[NMI CALLBACK]: Core Number: %lx, Interrupted RIP: %llx, Interrupted RSP: %llx",
@ -802,9 +802,9 @@ HandleNmiIOCTL()
PAGED_CODE();
NTSTATUS status = STATUS_UNSUCCESSFUL;
PVOID callback_handle = NULL;
SYSTEM_MODULES system_modules = {0};
PNMI_CONTEXT nmi_context = NULL;
PVOID handle = NULL;
SYSTEM_MODULES modules = {0};
PNMI_CONTEXT context = NULL;
UINT32 size = ImpKeQueryActiveProcessorCount(0) * sizeof(NMI_CONTEXT);
@ -817,10 +817,10 @@ HandleNmiIOCTL()
if (!NT_SUCCESS(status))
DEBUG_ERROR("ValidateHalDispatchTables failed with status %x", status);
nmi_context =
context =
ImpExAllocatePool2(POOL_FLAG_NON_PAGED, size, NMI_CONTEXT_POOL);
if (!nmi_context) {
if (!context) {
UnsetNmiInProgressFlag();
return STATUS_MEMORY_NOT_ALLOCATED;
}
@ -830,48 +830,47 @@ HandleNmiIOCTL()
* becomes harder for people to hook our callback and get up to some
* funny business
*/
callback_handle = ImpKeRegisterNmiCallback(NmiCallback, nmi_context);
handle = ImpKeRegisterNmiCallback(NmiCallback, context);
if (!callback_handle) {
if (!handle) {
DEBUG_ERROR("KeRegisterNmiCallback failed with no status.");
ImpExFreePoolWithTag(nmi_context, NMI_CONTEXT_POOL);
UnsetNmiInProgressFlag();
return STATUS_UNSUCCESSFUL;
goto end;
}
/*
* We query the system modules each time since they can potentially
* change at any time
*/
status = GetSystemModuleInformation(&system_modules);
status = GetSystemModuleInformation(&modules);
if (!NT_SUCCESS(status)) {
ImpKeDeregisterNmiCallback(callback_handle);
ImpExFreePoolWithTag(nmi_context, NMI_CONTEXT_POOL);
DEBUG_ERROR("Error retriving system module information");
UnsetNmiInProgressFlag();
return status;
goto end;
}
status = LaunchNonMaskableInterrupt();
if (!NT_SUCCESS(status)) {
DEBUG_ERROR("Error running NMI callbacks");
ImpKeDeregisterNmiCallback(callback_handle);
ImpExFreePoolWithTag(system_modules.address, SYSTEM_MODULES_POOL);
ImpExFreePoolWithTag(nmi_context, NMI_CONTEXT_POOL);
UnsetNmiInProgressFlag();
return status;
goto end;
}
status = AnalyseNmiData(nmi_context, &system_modules);
status = AnalyseNmiData(context, &modules);
if (!NT_SUCCESS(status))
DEBUG_ERROR("Error analysing nmi data");
ImpExFreePoolWithTag(system_modules.address, SYSTEM_MODULES_POOL);
ImpExFreePoolWithTag(nmi_context, NMI_CONTEXT_POOL);
ImpKeDeregisterNmiCallback(callback_handle);
end:
if (modules.address)
ImpExFreePoolWithTag(modules.address, SYSTEM_MODULES_POOL);
if (context)
ImpExFreePoolWithTag(context, NMI_CONTEXT_POOL);
if (handle)
ImpKeDeregisterNmiCallback(handle);
UnsetNmiInProgressFlag();
return status;
}