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KeStackAttach: Acquire lock before getting thread

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svn path=/trunk/; revision=11305
This commit is contained in:
Alex Ionescu 2004-10-17 03:43:26 +00:00
parent 1f59f1138b
commit b3f049be4f
2 changed files with 13 additions and 11 deletions
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20
reactos/ntoskrnl/ke/i386/kernel.c
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@ -134,30 +134,31 @@ KePrepareForApplicationProcessorInit(ULONG Id)
VOID
KeApplicationProcessorInit(VOID)
{
PKPCR KPCR;
PKPCR Pcr;
ULONG Offset;
/*
* Create a PCR for this processor
*/
Offset = InterlockedIncrement((LONG *)&PcrsAllocated) - 1;
KPCR = (PKPCR)(KPCR_BASE + (Offset * PAGE_SIZE));
MmCreateVirtualMappingForKernel((PVOID)KPCR,
Pcr = (PKPCR)(KPCR_BASE + (Offset * PAGE_SIZE));
MmCreateVirtualMappingForKernel((PVOID)Pcr,
PAGE_READWRITE,
&PcrPages[Offset],
1);
memset(KPCR, 0, PAGE_SIZE);
KPCR->ProcessorNumber = (UCHAR)Offset;
KPCR->Self = KPCR;
KPCR->Irql = HIGH_LEVEL;
memset(Pcr, 0, PAGE_SIZE);
Pcr->ProcessorNumber = (UCHAR)Offset;
Pcr->Self = Pcr;
Pcr->Tib.Self = &Pcr->Tib;
Pcr->Irql = HIGH_LEVEL;
/* Mark the end of the exception handler list */
KPCR->Tib.ExceptionList = (PVOID)-1;
Pcr->Tib.ExceptionList = (PVOID)-1;
/*
* Initialize the GDT
*/
KiInitializeGdt(KPCR);
KiInitializeGdt(Pcr);
/*
* It is now safe to process interrupts
@ -215,6 +216,7 @@ KeInit1(PCHAR CommandLine, PULONG LastKernelAddress)
KPCR = (PKPCR)KPCR_BASE;
memset(KPCR, 0, PAGE_SIZE);
KPCR->Self = (PKPCR)KPCR_BASE;
KPCR->Tib.Self = (PKPCR_TIB)KPCR_BASE;
KPCR->Irql = HIGH_LEVEL;
KPCR->GDT = KiBootGdt;
KPCR->IDT = (PUSHORT)KiIdt;

4
reactos/ntoskrnl/ke/process.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: process.c,v 1.29 2004/10/13 22:27:03 ion Exp $
/* $Id: process.c,v 1.30 2004/10/17 03:43:26 ion Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/ke/process.c
@ -138,8 +138,8 @@ KeStackAttachProcess (
KIRQL OldIrql;
PKTHREAD Thread;
Thread = KeGetCurrentThread();
OldIrql = KeAcquireDispatcherDatabaseLock();
Thread = KeGetCurrentThread();
/* Crash system if DPC is being executed! */
if (KeIsExecutingDpc()) {