From 2ea30bfeae021f7c99f40b0a8698ab855313dd94 Mon Sep 17 00:00:00 2001
From: Christoph von Wittich <christoph_vw@reactos.org>
Date: Sat, 6 Jun 2015 09:36:01 +0000
Subject: [PATCH] [NTOSKRNL] do not set ReturnLength in ProcessWow64Information
 error case add size check in PROCESSOR_POWER_INFORMATION stub

svn path=/trunk/; revision=68031
---
 reactos/ntoskrnl/ex/sysinfo.c | 7 +++++++
 reactos/ntoskrnl/ps/query.c   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/reactos/ntoskrnl/ex/sysinfo.c b/reactos/ntoskrnl/ex/sysinfo.c
index 5a00c12d478..d2c7c4d442a 100644
--- a/reactos/ntoskrnl/ex/sysinfo.c
+++ b/reactos/ntoskrnl/ex/sysinfo.c
@@ -1839,6 +1839,13 @@ QSI_DEF(SystemDockInformation)
 /* Class 42 - Power Information */
 QSI_DEF(SystemPowerInformation)
 {
+    *ReqSize = sizeof(PROCESSOR_POWER_INFORMATION) * KeNumberProcessors;
+
+    if (sizeof(PROCESSOR_POWER_INFORMATION) * KeNumberProcessors > Size)
+    {
+        return STATUS_INFO_LENGTH_MISMATCH;
+    }
+    
     /* FIXME */
     DPRINT1("NtQuerySystemInformation - SystemPowerInformation not implemented\n");
     return STATUS_NOT_IMPLEMENTED;
diff --git a/reactos/ntoskrnl/ps/query.c b/reactos/ntoskrnl/ps/query.c
index 64a318e4706..64f45113993 100644
--- a/reactos/ntoskrnl/ps/query.c
+++ b/reactos/ntoskrnl/ps/query.c
@@ -960,6 +960,7 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
             Length = sizeof(ULONG_PTR);
             if (ProcessInformationLength != Length)
             {
+                Length = 0;
                 Status = STATUS_INFO_LENGTH_MISMATCH;
                 break;
             }