Huw Davies : wow64: Report the correct size for SystemLogicalProcessorInformationEx.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 04d07d65e3e411d807a0447f5bc892ec669640f1
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=04d07d65e3e411d807a0447f5...

Author: Huw Davies <huw(a)codeweavers.com>
Date:   Fri Jun 24 11:06:39 2022 +0100

wow64: Report the correct size for SystemLogicalProcessorInformationEx.

Spotted by Brendan Shanks.

Signed-off-by: Huw Davies <huw(a)codeweavers.com>

---

 dlls/ntdll/tests/info.c | 5 +++--
 dlls/wow64/system.c     | 6 +++---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/dlls/ntdll/tests/info.c b/dlls/ntdll/tests/info.c
index e019fcb5975..c367b4f372e 100644
--- a/dlls/ntdll/tests/info.c
+++ b/dlls/ntdll/tests/info.c
@@ -1168,7 +1168,7 @@ static void test_query_logicalprocex(void)
 {
     SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *infoex, *infoex_public, *infoex_core, *infoex_numa,
                                             *infoex_cache, *infoex_package, *infoex_group, *ex;
-    DWORD relationship, len, len_public, len_core, len_numa, len_cache, len_package, len_group, len_union;
+    DWORD relationship, len, len_public, len_core, len_numa, len_cache, len_package, len_group, len_union, ret_len;
     unsigned int i, j;
     NTSTATUS status;
     BOOL ret;
@@ -1226,8 +1226,9 @@ static void test_query_logicalprocex(void)
     infoex_group = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len_group);
 
     relationship = RelationAll;
-    status = pNtQuerySystemInformationEx(SystemLogicalProcessorInformationEx, &relationship, sizeof(relationship), infoex, len, &len);
+    status = pNtQuerySystemInformationEx(SystemLogicalProcessorInformationEx, &relationship, sizeof(relationship), infoex, len, &ret_len);
     ok(status == STATUS_SUCCESS, "got 0x%08lx\n", status);
+    ok(ret_len == len, "got %08lx expected %08lx\n", ret_len, len);
 
     ret = pGetLogicalProcessorInformationEx(RelationAll, infoex_public, &len_public);
     ok(ret, "got %d, error %ld\n", ret, GetLastError());
diff --git a/dlls/wow64/system.c b/dlls/wow64/system.c
index 0727bc25bbe..c5c1563afc2 100644
--- a/dlls/wow64/system.c
+++ b/dlls/wow64/system.c
@@ -617,7 +617,7 @@ NTSTATUS WINAPI wow64_NtQuerySystemInformationEx( UINT *args )
         status = NtQuerySystemInformationEx( class, &handle, sizeof(handle), info, size, &size );
         if (!status)
         {
-            for (pos = pos32 = 0; pos < size && pos32 < len; pos += ex->Size, pos32 += size32)
+            for (pos = pos32 = 0; pos < size; pos += ex->Size, pos32 += size32)
             {
                 ex = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)((char *)info + pos);
                 ex32 = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX32 *)((char *)info32 + pos32);
@@ -645,8 +645,8 @@ NTSTATUS WINAPI wow64_NtQuerySystemInformationEx( UINT *args )
                 }
                 if (pos32 + size32 <= len) put_logical_proc_info_ex( ex32, ex );
             }
-            if (pos < size) status = STATUS_INFO_LENGTH_MISMATCH;
-            else size = pos32;
+            if (pos32 > len) status = STATUS_INFO_LENGTH_MISMATCH;
+            size = pos32;
         }
         if (retlen) *retlen = size;
         return status;