WARNING: at kernel/workqueue.c:1217 worker_enter_idle+0xc8/0x140()

FYI... here is kernel trace that I got while booting 2.6.39-rc6:

------------[ cut here ]------------
WARNING: at kernel/workqueue.c:1217 worker_enter_idle+0xc8/0x140()
Hardware name: System Product Name
Modules linked in: powernow_k8 freq_table mperf snd_hda_codec_hdmi snd_hda_codec_analog raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx md_mod rt61pci rt2x00pci rt2x00lib mac80211 cfg80211 psmouse snd_hda_intel ppdev parport_pc snd_hda_codec snd_hwdep parport evdev k10temp forcedeth rfkill snd_pcm nv_tco eeprom_93cx6 snd_timer asus_atk0110 mac_hid hwmon i2c_nforce2 serio_raw snd rtc_cmos processor thermal soundcore snd_page_alloc sg fan button
Pid: 387, comm: kworker/1:1 Not tainted 2.6.39-rc6 #3
Call Trace:
 [<ffffffff81041eeb>] ? warn_slowpath_common+0x7b/0xc0
 [<ffffffff81055ba8>] ? worker_enter_idle+0xc8/0x140
 [<ffffffff81058d50>] ? worker_thread+0x1d0/0x3d0
 [<ffffffff81033640>] ? __wake_up_common+0x50/0x80
 [<ffffffff81058b80>] ? rescuer_thread+0x2e0/0x2e0
 [<ffffffff81058b80>] ? rescuer_thread+0x2e0/0x2e0
 [<ffffffff8105c7f6>] ? kthread+0x96/0xa0
 [<ffffffff81656ed4>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff8105c760>] ? kthread_worker_fn+0x170/0x170
 [<ffffffff81656ed0>] ? gs_change+0xb/0xb
---[ end trace 912cf20fdd777538 ]---

William