------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.32/kernel/trace/ring_buffer.c:1984 rb_add_time_stamp+0x79/0x230()
Hardware name: Aspire 5542                    
Modules linked in: binfmt_misc ppdev snd_hda_codec_atihdmi snd_hda_codec_realtek fbcon tileblit font bitblit softcursor vga16fb vgastate snd_hda_intel arc4 snd_hda_codec snd_pcm_oss snd_mixer_oss snd_hwdep usblp snd_seq_dummy snd_pcm snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event joydev snd_seq snd_timer snd_seq_device ath9k mac80211 radeon ttm snd drm_kms_helper soundcore ath drm agpgart snd_page_alloc cfg80211 uvcvideo i2c_algo_bit videodev video i2c_piix4 output shpchp v4l1_compat lp psmouse parport serio_raw acer_wmi led_class tg3
Pid: 1348, comm: rtkit-daemon Not tainted 2.6.32-16-generic-pae #24-Ubuntu
Call Trace:
 [<c0152692>] warn_slowpath_common+0x72/0xa0
 [<c01b4279>] ? rb_add_time_stamp+0x79/0x230
 [<c01b4279>] ? rb_add_time_stamp+0x79/0x230
 [<c01526da>] warn_slowpath_null+0x1a/0x20
 [<c01b4279>] rb_add_time_stamp+0x79/0x230
 [<c010f518>] ? sched_clock+0x8/0x10
 [<c01b456a>] rb_reserve_next_event+0x13a/0x1e0
 [<c01b4790>] ring_buffer_lock_reserve+0x80/0x140
 [<c01b62ca>] trace_buffer_lock_reserve+0x1a/0x50
 [<c01b64b2>] trace_current_buffer_lock_reserve+0x22/0x30
 [<c020ce4a>] ftrace_raw_event_do_sys_open+0x5a/0xe0
 [<c020d387>] do_sys_open+0x137/0x160
 [<c020cdf0>] ? ftrace_raw_event_do_sys_open+0x0/0xe0
 [<c020d41e>] sys_open+0x2e/0x40
 [<c0109723>] sysenter_do_call+0x12/0x28
---[ end trace f0568bba4d43484b ]---