Different AttachProvider are used on different platforms. On Linux, it shouldn't use sun.tools.attach.WindowsAttachProvider. It is for Windows.
[solaris] sun.tools.attach.SolarisAttachProvider
[windows] sun.tools.attach.WindowsAttachProvider
[linux] sun.tools.attach.LinuxAttachProvider
This is configured in a resource file META-INF\services\com.sun.tools.attach.spi.AttachProvider (typically this file exists in tools.jar). It will search CLASSPATH to get first occurrence of this resource file and read the AttachProvider implementation class from it.
So you can probably resolve this problem by search sun.tools.attach.WindowsAttachProvider in your CLASSPATH. Possibly you have included a tools.jar from Windows.