https://git.reactos.org/?p=reactos.git;a=commitdiff;h=8a0495063b9446e8d940fa64fadd30046c733711
commit 8a0495063b9446e8d940fa64fadd30046c733711 Author: Bernhard Feichtinger <[email protected]> AuthorDate: Tue Nov 13 20:45:27 2018 +0100 Commit: Pierre Schweitzer <[email protected]> CommitDate: Sun Nov 25 11:29:18 2018 +0100 [NTOS:MM] Handle unimplemeted case for MiCheckForUserStackOverflow --- ntoskrnl/mm/ARM3/pagfault.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/ntoskrnl/mm/ARM3/pagfault.c b/ntoskrnl/mm/ARM3/pagfault.c index c75c4596e6..77aaf754df 100644 --- a/ntoskrnl/mm/ARM3/pagfault.c +++ b/ntoskrnl/mm/ARM3/pagfault.c @@ -81,8 +81,29 @@ MiCheckForUserStackOverflow(IN PVOID Address, /* Do we have at least one page between here and the end of the stack? */ if (((ULONG_PTR)NextStackAddress - PAGE_SIZE) <= (ULONG_PTR)DeallocationStack) { - /* We don't -- Windows would try to make this guard page valid now */ + /* We don't -- Trying to make this guard page valid now */ DPRINT1("Close to our death...\n"); + + /* Calculate the next memory address */ + NextStackAddress = (PVOID)((ULONG_PTR)PAGE_ALIGN(DeallocationStack) + GuranteedSize); + + /* Allocate the memory */ + Status = ZwAllocateVirtualMemory(NtCurrentProcess(), + &NextStackAddress, + 0, + &GuranteedSize, + MEM_COMMIT, + PAGE_READWRITE); + if (NT_SUCCESS(Status)) + { + /* Success! */ + Teb->NtTib.StackLimit = NextStackAddress; + } + else + { + DPRINT1("Failed to allocate memory\n"); + } + return STATUS_STACK_OVERFLOW; }
