- PsUnblockThread must be called with dispatcher database lock held.

reactos/ntoskrnl/ps

diff -u -r1.88 -r1.89
--- create.c	12 Dec 2004 17:25:52 -0000	1.88
+++ create.c	18 Dec 2004 15:52:51 -0000	1.89
@@ -1,4 +1,4 @@

-/* $Id: create.c,v 1.88 2004/12/12 17:25:52 hbirr Exp $

+/* $Id: create.c,v 1.89 2004/12/18 15:52:51 hbirr Exp $

  *
  * COPYRIGHT:              See COPYING in the top level directory
  * PROJECT:                ReactOS kernel

@@ -649,6 +649,7 @@

   PTEB TebBase;
   NTSTATUS Status;
   PKAPC LdrInitApc;

+  KIRQL oldIrql;

 
   DPRINT("NtCreateThread(ThreadHandle %x, PCONTEXT %x)\n",
 	 ThreadHandle,ThreadContext);

@@ -735,10 +736,13 @@

    * We must do this manually. Do NOT attempt to set the Thread to Alertable before the call,
    * doing so is a blatant and erronous hack.
    */

-   Thread->Tcb.ApcState.UserApcPending = TRUE;
-   Thread->Tcb.Alerted[KernelMode] = TRUE;

+  Thread->Tcb.ApcState.UserApcPending = TRUE;
+  Thread->Tcb.Alerted[KernelMode] = TRUE;

+  oldIrql = KeAcquireDispatcherDatabaseLock ();

   PsUnblockThread(Thread, NULL);

+  KeReleaseDispatcherDatabaseLock(oldIrql);
+

 
   return(STATUS_SUCCESS);
 }

@@ -774,6 +778,7 @@

 {
    PETHREAD Thread;
    NTSTATUS Status;

+   KIRQL oldIrql;

    
    DPRINT("PsCreateSystemThread(ThreadHandle %x, ProcessHandle %x)\n",
 	    ThreadHandle,ProcessHandle);

@@ -801,7 +806,9 @@

 	*ClientId=Thread->Cid;
      }
 

-   PsUnblockThread(Thread, NULL);

+  oldIrql = KeAcquireDispatcherDatabaseLock ();
+  PsUnblockThread(Thread, NULL);
+  KeReleaseDispatcherDatabaseLock(oldIrql);

    
    return(STATUS_SUCCESS);
 }