ntoskrnl.exe: Don't try to copy back data in buffered mode when we don't expect…

ntoskrnl.exe: Don't try to copy back data in buffered mode when we don't expect any in process_ioctl.

ntoskrnl.exe: Don't try to copy back data in buffered mode when we don't expect…
6643f07d · Christian Costa · Alexandre Julliard · ea943293 · 6643f07d
Commit 6643f07d authored Oct 03, 2012 by Christian Costa Committed by Alexandre Julliard Oct 03, 2012
Hide whitespace changes
Inline Side-by-side

Showing with 1 addition and 1 deletion

ntoskrnl.c dlls/ntoskrnl.exe/ntoskrnl.c +1 -1

No files found.
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -197,7 +197,7 @@ static NTSTATUS process_ioctl( DEVICE_OBJECT *device, ULONG code, void *in_buff,
    *out_size = (irp.IoStatus.u.Status >= 0) ? irp.IoStatus.Information : 0;
    if ((code & 3) == METHOD_BUFFERED)
    {
-        memcpy( out_buff, irp.AssociatedIrp.SystemBuffer, *out_size );
+        if (out_buff) memcpy( out_buff, irp.AssociatedIrp.SystemBuffer, *out_size );
        HeapFree( GetProcessHeap(), 0, irp.AssociatedIrp.SystemBuffer );
    }
    return irp.IoStatus.u.Status;