------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.31/kernel/trace/ring_buffer.c:1393 rb_add_time_stamp+0x79/0x200()
Hardware name: A3N       
Modules linked in: binfmt_misc snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss pcmcia snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi iptable_filter snd_seq_midi_event yenta_socket ip_tables joydev snd_seq ipw2200 rsrc_nonstatic x_tables snd_timer libipw pcmcia_core lib80211 snd_seq_device psmouse snd soundcore serio_raw ppdev snd_page_alloc asus_laptop shpchp parport_pc led_class lp parport fbcon tileblit font bitblit softcursor 8139too i915 drm i2c_algo_bit 8139cp mii ohci1394 ieee1394 video output intel_agp agpgart
Pid: 1637, comm: date Not tainted 2.6.31-19-generic #56-Ubuntu
Call Trace:
 [<c014503d>] warn_slowpath_common+0x6d/0xa0
 [<c019a0b9>] ? rb_add_time_stamp+0x79/0x200
 [<c019a0b9>] ? rb_add_time_stamp+0x79/0x200
 [<c0145085>] warn_slowpath_null+0x15/0x20
 [<c019a0b9>] rb_add_time_stamp+0x79/0x200
 [<c0108c98>] ? sched_clock+0x8/0x10
 [<c019a352>] rb_reserve_next_event+0x112/0x1b0
 [<c01f3bba>] ? do_filp_open+0x53a/0x890
 [<c019a573>] ring_buffer_lock_reserve+0x83/0x150
 [<c019c7dc>] trace_buffer_lock_reserve+0x1c/0x50
 [<c019c99f>] trace_current_buffer_lock_reserve+0x1f/0x30
 [<c01e554a>] ftrace_raw_event_do_sys_open+0x4a/0xb0
 [<c01e5a82>] do_sys_open+0x132/0x150
 [<c01e5500>] ? ftrace_raw_event_do_sys_open+0x0/0xb0
 [<c01e5b09>] sys_open+0x29/0x40
 [<c010336c>] syscall_call+0x7/0xb
---[ end trace 6cae70be2ee0ca60 ]---