2011/4/8 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: > On Fri, 8 Apr 2011, Zdenek Kabelac wrote: > >> Hi >> >> While debugging resume problem with Intel HW I've been hitting problem >> with endless print of usb 1.1 error message on my T61. >> (See my other similar post >> http://marc.info/?l=linux-kernel&m=130221292724436&w=2) > > This is essentially the same problem. > >> This time the problem is generated by Bluetooth device. >> >> Often just only several messages are printed - and then machine >> suspend - so the log usually contains only several such message - if >> at all - however today with debugging and serial console logging - >> I've seen several times - that suspend resulted in endless unbreakable >> loop. >> >> As a workaround - one could just disable BT device: >> "echo disable >/proc/acpi/ibm/bluetooth" > > ... > >> Googling it - seems it's common issue of this BT chipset - but I think >> is should not cause suspend deadlock ?? > > Are you sure anything is deadlocked? What happens if you disable > CONFIG_USB_DEBUG? > Ok - I've disabled this config option - now kernel writes this: (when I keep bt device enabled) usb 3-1: USB disconnect, device number 2 btusb_bulk_complete: hci0 urb ffff88012b94ca50 failed to resubmit (19) btusb_intr_complete: hci0 urb ffff88012b94c000 failed to resubmit (19) btusb_bulk_complete: hci0 urb ffff88012b94c948 failed to resubmit (19) btusb_send_frame: hci0 urb ffff880113dd0528 submission failed ------------[ cut here ]------------ WARNING: at lib/debugobjects.c:262 debug_print_object+0x7c/0x8d() Hardware name: 6464CTO ODEBUG: free active (active state 0) object type: timer_list hint: hci_cmd_timer+0x0/0x46 [bluetooth] Modules linked in: hidp ip6table_filter systemd[1]: Service bluetooth.target is not needed anymore. Stopping. ip6_tables ebtable_nat ebtables xt_CHECKSUM iptable_mangle tun bridge ipv6 stp llc sunrpc rfcomm acpi_cpufreq freq_table mperf bnep xt_physdev ipt_MASQUERADE iptable_nat nf_nat snd_hda_codec_analog arc4 iwl3945 snd_hda_intel snd_hda_codec snd_hwdep r852 snd_seq sm_common snd_seq_device microcode btusb nand iwl_legacy nand_ids r592 nand_ecc memstick mtd snd_pcm mac80211 i2c_i801 joydev iTCO_wdt bluetooth iTCO_vendor_support cfg80211 thinkpad_acpi e1000e snd_timer rfkill snd_page_alloc wmi snd soundcore virtio_net kvm_intel kvm uinput sdhci_pci yenta_socket sdhci mmc_core i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan] Pid: 21, comm: khubd Not tainted 2.6.39-0.rc2.git0.0.fc16.x86_64 #1 Call Trace: [<ffffffff81056af8>] warn_slowpath_common+0x83/0x9b [<ffffffff81056bb3>] warn_slowpath_fmt+0x46/0x48 [<ffffffff8125c173>] debug_print_object+0x7c/0x8d [<ffffffffa023718c>] ? hci_send_acl+0x27c/0x27c [bluetooth] [<ffffffff8125c961>] debug_check_no_obj_freed+0x96/0x175 [<ffffffffa02438e9>] ? bt_host_release+0x16/0x18 [bluetooth] [<ffffffff811202ac>] slab_free_hook+0x6b/0x74 [<ffffffff811223a8>] kfree+0x8e/0xf2 [<ffffffffa02438e9>] bt_host_release+0x16/0x18 [bluetooth] [<ffffffff813160da>] device_release+0x4c/0x81 [<ffffffff8124e89b>] kobject_release+0x11d/0x154 [<ffffffff8124e77e>] ? kobject_del+0x36/0x36 [<ffffffff8124fccf>] kref_put+0x43/0x4d [<ffffffff8124e6e1>] kobject_put+0x45/0x49 [<ffffffff81315b1b>] put_device+0x17/0x19 [<ffffffffa02389a2>] hci_free_dev+0x26/0x2a [bluetooth] [<ffffffffa0390cbb>] btusb_disconnect+0xbd/0xc6 [btusb] [<ffffffff81378b18>] usb_unbind_interface+0x5c/0x124 [<ffffffff8131932e>] __device_release_driver+0x7c/0xd5 [<ffffffff813193ac>] device_release_driver+0x25/0x32 [<ffffffff81318edb>] bus_remove_device+0xc4/0xd4 [<ffffffff81316812>] device_del+0x13c/0x18a [<ffffffff81376d6e>] usb_disable_device+0x8c/0x178 [<ffffffff8136f6d1>] usb_disconnect+0xd0/0x135 [<ffffffff813716ab>] hub_thread+0x741/0x119d [<ffffffff81087164>] ? trace_hardirqs_on+0xd/0xf [<ffffffff810734fc>] ? __init_waitqueue_head+0x4b/0x4b [<ffffffff81370f6a>] ? usb_remote_wakeup+0x64/0x64 [<ffffffff81072d8d>] kthread+0xa8/0xb0 [<ffffffff814c4ba4>] kernel_thread_helper+0x4/0x10 [<ffffffff814bd254>] ? retint_restore_args+0x13/0x13 [<ffffffff81072ce5>] ? __init_kthread_worker+0x5a/0x5a [<ffffffff814c4ba0>] ? gs_change+0x13/0x13 ---[ end trace a7aecbf020e621f2 ]--- PM: Syncing filesystems ... done. PM: Preparing system for mem sleep Zdenek -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
