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[NTOS:MM] Improve MmGrowKernelStackEx

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This commit is contained in:
Timo Kreuzer 2023-11-07 00:45:27 +02:00
parent de3a6706e7
commit cb31f810c5
1 changed files with 4 additions and 2 deletions
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6
ntoskrnl/mm/ARM3/procsup.c
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@ -411,7 +411,7 @@ MmGrowKernelStackEx(IN PVOID StackPointer,
// Get the new one and make sure this isn't a retarded request // Get the new one and make sure this isn't a retarded request
// //
NewLimitPte = MiAddressToPte((PVOID)((ULONG_PTR)StackPointer - GrowSize)); NewLimitPte = MiAddressToPte((PVOID)((ULONG_PTR)StackPointer - GrowSize));
if (NewLimitPte == LimitPte) return STATUS_SUCCESS; if (NewLimitPte >= LimitPte) return STATUS_SUCCESS;
// //
// Now make sure you're not going past the reserved space // Now make sure you're not going past the reserved space
@ -427,7 +427,7 @@ MmGrowKernelStackEx(IN PVOID StackPointer,
} }
// //
// Calculate the number of new pages // Start with the first unmapped PTE
// //
LimitPte--; LimitPte--;
@ -444,6 +444,8 @@ MmGrowKernelStackEx(IN PVOID StackPointer,
// //
while (LimitPte >= NewLimitPte) while (LimitPte >= NewLimitPte)
{ {
ASSERT(LimitPte->u.Long == 0);
/* Get a page and write the current invalid PTE */ /* Get a page and write the current invalid PTE */
MI_SET_USAGE(MI_USAGE_KERNEL_STACK_EXPANSION); MI_SET_USAGE(MI_USAGE_KERNEL_STACK_EXPANSION);
MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName); MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);