4.6.0-rc5: kmemleak around dev_pm_qos_constraints_allocate

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Hi,
  anyone has ever seen this?

[ 2477.001127] kmemleak: 8 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[ 6249.251894] perf: interrupt took too long (2506 > 2500), lowering kernel.perf_event_max_sample_rate to 79800
[ 9951.944091] perf: interrupt took too long (3136 > 3132), lowering kernel.perf_event_max_sample_rate to 63700
[23076.002641] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[26110.058965] kmemleak: 4 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[39760.167906] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)


# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff88040b690008 (size 192):
  comm "kworker/0:2", pid 1899, jiffies 4294937814 (age 69683.180s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 10 00 69 0b 04 88 ff ff  ..........i.....
    10 00 69 0b 04 88 ff ff 00 00 00 00 ad 4e ad de  ..i..........N..
  backtrace:
    [<ffffffff81a37359>] kmemleak_alloc+0x49/0xa0
    [<ffffffff81209486>] kmem_cache_alloc_trace+0xe6/0x190
    [<ffffffff815ec834>] dev_pm_qos_constraints_allocate+0x44/0x110
    [<ffffffff815eca7a>] __dev_pm_qos_add_request+0x17a/0x190
    [<ffffffff815ecac6>] dev_pm_qos_add_request+0x36/0x50
    [<ffffffff816b5728>] usb_hub_create_port_device+0x138/0x370
    [<ffffffff816a1c37>] hub_probe+0x8a7/0xf20
    [<ffffffff816ab191>] usb_probe_interface+0x1c1/0x300
    [<ffffffff815e3e47>] driver_probe_device+0x227/0x440
    [<ffffffff815e41df>] __device_attach_driver+0x8f/0x100
    [<ffffffff815e1b98>] bus_for_each_drv+0x58/0x90
    [<ffffffff815e3ae8>] __device_attach+0xb8/0x130
    [<ffffffff815e427e>] device_initial_probe+0xe/0x10
    [<ffffffff815e2d0e>] bus_probe_device+0x9e/0xb0
    [<ffffffff815e0b54>] device_add+0x414/0x5e0
    [<ffffffff816a90df>] usb_set_configuration+0x52f/0x900
...

Martin
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