Zebediah Figura : ntoskrnl: Dereference the device children in IoDeleteDevice().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e56e4f97a4eab649b06cc4241ee0a9a4f968e45c
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=e56e4f97a4eab649b06cc4241...

Author: Zebediah Figura <zfigura(a)codeweavers.com>
Date:   Fri Aug 20 19:01:24 2021 -0500

ntoskrnl: Dereference the device children in IoDeleteDevice().

Signed-off-by: Zebediah Figura <zfigura(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/ntoskrnl.exe/ntoskrnl.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 7f5ca846db2..fb3f9a23152 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -1628,9 +1628,17 @@ void WINAPI IoDeleteDevice( DEVICE_OBJECT *device )
     {
         struct wine_device *wine_device = CONTAINING_RECORD(device, struct wine_device, device_obj);
         DEVICE_OBJECT **prev = &device->DriverObject->DeviceObject;
+        DEVICE_RELATIONS *children;
+        unsigned int i;
+
         while (*prev && *prev != device) prev = &(*prev)->NextDevice;
         if (*prev) *prev = (*prev)->NextDevice;
-        ExFreePool( wine_device->children );
+        if ((children = wine_device->children))
+        {
+            for (i = 0; i < children->Count; ++i)
+                ObDereferenceObject( children->Objects[i] );
+            ExFreePool( children );
+        }
         ObDereferenceObject( device );
     }
 }