Jun  9 15:42:06 localhost kernel: BUG: warning at drivers/base/core.c:109/device_release() (Tainted: P      )
Jun  9 15:42:06 localhost kernel: 
Jun  9 15:42:06 localhost kernel: Call Trace:
Jun  9 15:42:06 localhost kernel:  [<ffffffff803321ff>] kobject_cleanup+0x53/0x71
Jun  9 15:42:06 localhost kernel:  [<ffffffff8033221d>] kobject_release+0x0/0x9
Jun  9 15:42:06 localhost kernel:  [<ffffffff802327ad>] kref_put+0x6f/0x7a
Jun  9 15:42:06 localhost kernel:  [<ffffffff88a2a799>] :dock:find_dock+0x20b/0x238
Jun  9 15:42:06 localhost kernel:  [<ffffffff80367163>] acpi_ns_walk_namespace+0x122/0x145
Jun  9 15:42:06 localhost kernel:  [<ffffffff88a2a58e>] :dock:find_dock+0x0/0x238
Jun  9 15:42:06 localhost kernel:  [<ffffffff803657c1>] acpi_walk_namespace+0x5f/0x83
Jun  9 15:42:06 localhost kernel:  [<ffffffff881a1037>] :dock:dock_init+0x37/0x53
Jun  9 15:42:06 localhost kernel:  [<ffffffff8029b91d>] sys_init_module+0x1668/0x17ca
Jun  9 15:42:06 localhost kernel:  [<ffffffff8025711e>] system_call+0x7e/0x83