Hi, I'm getting this error whenever I use "hcitool cc" or "l2ping xx:xx:xx:xx:xx:xx" command. Kernel: version 2.6.30-rc3 from bluetooth-testing tree HCI Tool: version 3.20 Laptop: Lenovo X61s Did anyone see this already? Thanks, Bing =========================================== # hcitool cc 00:1c:c1:e3:ce:cf BUG: sleeping function called from invalid context at mm/slub.c:1595 in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper Pid: 0, comm: swapper Not tainted 2.6.30-rc3 #2 Call Trace: [<c0511f9c>] ? kvasprintf+0x28/0x44 [<c048ea14>] ? __kmalloc+0xa3/0x168 [<c0511f9c>] ? kvasprintf+0x28/0x44 [<c050bf60>] ? kobject_set_name_vargs+0x1e/0x4c [<c0582dca>] ? dev_set_name+0x1a/0x1c [<f89b9b20>] ? hci_conn_add_sysfs+0x48/0x94 [bluetooth] [<f89b70a1>] ? hci_event_packet+0x1e9/0x1b7c [bluetooth] [<c049e912>] ? pollwake+0x33/0x39 [<c041ecee>] ? __wake_up_common+0x2e/0x58 [<c041ff78>] ? __wake_up_sync_key+0x33/0x49 [<c05c00f3>] ? sock_def_readable+0x34/0x5e [<c05bf48e>] ? sock_queue_rcv_skb+0xaa/0xb1 [<f89b8d48>] ? hci_send_to_sock+0xd1/0x117 [bluetooth] [<f89b3f76>] ? hci_rx_task+0x6b/0x1d9 [bluetooth] [<f7d2d3fa>] ? rh_timer_func+0x0/0x5 [usbcore] [<c04328c2>] ? run_timer_softirq+0x120/0x189 [<c063ca45>] ? _spin_lock_irq+0x12/0x15 [<c043291c>] ? run_timer_softirq+0x17a/0x189 [<c042f5ee>] ? tasklet_action+0x5b/0xa7 [<c042f3a5>] ? __do_softirq+0x98/0x13e [<c042f30d>] ? __do_softirq+0x0/0x13e <IRQ> [<c042f2e0>] ? irq_exit+0x26/0x53 [<c040431e>] ? do_IRQ+0x65/0x76 [<c0403589>] ? common_interrupt+0x29/0x30 [<c0555efe>] ? acpi_idle_enter_simple+0x130/0x166 [<c0555c13>] ? acpi_idle_enter_bm+0xcf/0x28a [<c05b0682>] ? cpuidle_idle_call+0x5c/0x92 [<c040217e>] ? cpu_idle+0x46/0x5f [<c07c57c2>] ? start_kernel+0x2c7/0x2ca ------------[ cut here ]------------ WARNING: at kernel/workqueue.c:371 flush_cpu_workqueue+0x23/0x70() Hardware name: 766634U Modules linked in: cpufreq_ondemand acpi_cpufreq loop dm_multipath snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm crc_itu_t pcspkr snd_timer thinkpad_acpi snd ac battery btusb button iTCO_wdt iTCO_vendor_support soundcore bluetooth i2c_i801 rfkill i2c_core e1000e snd_page_alloc hwmon ata_piix dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod ahci libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd usbcore [last unloaded: scsi_wait_scan] Pid: 1100, comm: bluetooth Not tainted 2.6.30-rc3 #2 Call Trace: [<c042ae6d>] ? warn_slowpath+0x60/0x9f [<c042ae94>] ? warn_slowpath+0x87/0x9f [<c041ecee>] ? __wake_up_common+0x2e/0x58 [<c0420819>] ? update_curr+0xbc/0xf5 [<c0420800>] ? update_curr+0xa3/0xf5 [<c04279e6>] ? dequeue_task_fair+0xd8/0xe5 [<c0401d44>] ? __switch_to+0xde/0x164 [<c0424ffc>] ? finish_task_switch+0x40/0xc4 [<c04382ff>] ? flush_cpu_workqueue+0x23/0x70 [<c04387ed>] ? flush_workqueue+0x3c/0x59 [<f89b9674>] ? add_conn+0x10/0x2e [bluetooth] [<c0438af9>] ? worker_thread+0x12b/0x1b4 [<f89b9664>] ? add_conn+0x0/0x2e [bluetooth] [<c043b008>] ? autoremove_wake_function+0x0/0x2d [<c04389ce>] ? worker_thread+0x0/0x1b4 [<c043af45>] ? kthread+0x42/0x69 [<c043af03>] ? kthread+0x0/0x69 [<c0403977>] ? kernel_thread_helper+0x7/0x10 ---[ end trace 4622b3ef7b8b6111 ]--- # hciconfig -a hci0: Type: USB BD Address: 00:1C:26:E6:2F:41 ACL MTU: 1017:8 SCO MTU: 64:8 UP RUNNING RX bytes:348 acl:0 sco:0 events:11 errors:0 TX bytes:38 acl:0 sco:0 commands:11 errors:0 Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: Link mode: SLAVE ACCEPT Name: 'IBM Callisto' Class: 0x000000 Service Classes: Unspecified Device Class: Miscellaneous, HCI Ver: 2.0 (0x3) HCI Rev: 0x212b LMP Ver: 2.0 (0x3) LMP Subver: 0x41d3 Manufacturer: Broadcom Corporation (15) -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html