kernel BUG at /build/buildd/linux-2.6.32/drivers/char/tty_ldisc.c:707!

[Harufumi Tsuchiya]

Dear Ubuntuers,

In order to continuously take some data via a usb-serial adaptor,
I am using a netbook with Ubuntu 10.04;
Description: Ubuntu 10.04 LTS
Release: 10.04.

The usb-serial is composed of FT232RL, and successfully
attached to the netbook. However, occasionally, the use-serial
adopter is automatically disconnected and hence data-taking stops.
The occurrence rate of the disconnection is different from case-by-case;
in some case 1 per a few hours, and in another case 1 per 15 days.
I do not understand why the usb-serial adopter is abruptly disconnected,
and whether this disconnection is really due to ubuntu bug or not.

The following is a message given by dmesg;
[1308411.960414] ------------[ cut here ]------------
[1308411.960428] kernel BUG at /build/buildd/linux-2.6.32/drivers/char/tty_ldisc.c:707!
[1308411.960440] invalid opcode: 0000 [#1] SMP
[1308411.960455] last sysfs file: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/C1C0/voltage_now
[1308411.960468] Modules linked in: binfmt_misc rfcomm ppdev sco snd_hda_codec_analog bridge stp bnep l2cap fbcon tileblit font bitblit softcursor vga16fb vgastate snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event joydev snd_seq i915 snd_timer snd_seq_device drm_kms_helper uvcvideo hp_accel lib80211_crypt_tkip ftdi_sio btusb videodev v4l1_compat bluetooth snd drm usbserial psmouse intel_agp serio_raw wl(P) lis3lv02d input_polldev soundcore lib80211 i2c_algo_bit led_class agpgart snd_page_alloc video output lp parport ahci sky2
[1308411.960663]
[1308411.960678] Pid: 30, comm: khubd Tainted: P (2.6.32-22-generic #36-Ubuntu) HP 2140
[1308411.960692] EIP: 0060:[<c03b9fc3>] EFLAGS: 00010202 CPU: 1
[1308411.960713] EIP is at tty_ldisc_reinit+0x43/0x50
[1308411.960724] EAX: ffffffea EBX: f337e800 ECX: 00000002 EDX: 00000002
[1308411.960736] ESI: 000000d8 EDI: f337e814 EBP: f71dfd98 ESP: f71dfd90
[1308411.960748] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[1308411.960762] Process khubd (pid: 30, ti=f71de000 task=f71b2670 task.ti=f71de000)
[1308411.960772] Stack:
[1308411.960778] f337e800 00000000 f71dfdb0 c03ba176 00000001 f337e940 f337e940 f337e800
[1308411.960807] <0> f71dfdd8 c03b2c22 00000000 c058b5ff 00000000 00000286 00000001 f337e800
[1308411.960837] <0> f2cde400 00000000 f71dfde0 c03b2e72 f71dfe0c f831e51c 00000058 00000002
[1308411.960870] Call Trace:
[1308411.960890] [<c03ba176>] ? tty_ldisc_hangup+0x1a6/0x1e0
[1308411.960907] [<c03b2c22>] ? do_tty_hangup+0x112/0x350
[1308411.960925] [<c058b5ff>] ? _spin_lock_irqsave+0x2f/0x50
[1308411.960941] [<c03b2e72>] ? tty_vhangup+0x12/0x20
[1308411.960977] [<f831e51c>] ? usb_serial_disconnect+0x8c/0x170 [usbserial]
[1308411.961001] [<c044a279>] ? usb_unbind_interface+0xe9/0x130
[1308411.961024] [<c03e6611>] ? __device_release_driver+0x51/0xb0
[1308411.961042] [<c03e6735>] ? device_release_driver+0x25/0x40
[1308411.961059] [<c03e59eb>] ? bus_remove_device+0x7b/0xa0
[1308411.961076] [<c03e3e67>] ? device_del+0xf7/0x180
[1308411.961093] [<c0447025>] ? usb_disable_device+0x85/0x100
[1308411.961111] [<c0441abe>] ? usb_disconnect+0x9e/0x120
[1308411.961128] [<c044201b>] ? hub_port_connect_change+0x8b/0x850
[1308411.961148] [<c0442f85>] ? hub_events+0x1f5/0x510
[1308411.961167] [<c01678af>] ? finish_wait+0x4f/0x70
[1308411.961183] [<c04432da>] ? hub_thread+0x3a/0x140
[1308411.961200] [<c0167740>] ? autoremove_wake_function+0x0/0x50
[1308411.961217] [<c04432a0>] ? hub_thread+0x0/0x140
[1308411.961232] [<c01674b4>] ? kthread+0x74/0x80
[1308411.961247] [<c0167440>] ? kthread+0x0/0x80
[1308411.961264] [<c0104087>] ? kernel_thread_helper+0x7/0x10
[1308411.961274] Code: 28 e8 c2 fb ff ff 89 f0 c7 43 28 00 00 00 00 e8 94 fe ff ff 3d 00 f0 ff ff 77 10 89 43 28 89 f2 89 d8 e8 b1 fa ff ff 5b 5e 5d c3 <0f> 0b eb fe 89 f6 8d bc 27 00 00 00 00 55 89 e5 57 56 53 83 ec
[1308411.961440] EIP: [<c03b9fc3>] tty_ldisc_reinit+0x43/0x50 SS:ESP 0068:f71dfd90
[1308411.961509] ---[ end trace 66bbe8ddc8bc71a4 ]---

[Simon Schubert (corecode)]

I can confirm this BUG:

[ 233.292555] hub 8-0:1.0: port 1 disabled by hub (EMI?), re-enabling...
[ 233.292562] usb 8-1: USB disconnect, address 2
[ 233.292685] ------------[ cut here ]------------
[ 233.292688] kernel BUG at /build/buildd/linux-2.6.32/drivers/char/tty_ldisc.c:707!
[ 233.292691] invalid opcode: 0000 [#1] SMP
[ 233.292695] last sysfs file: /sys/devices/pci0000:00/0000:00:1f.3/local_cpus
[ 233.292698] CPU 2
[ 233.292701] Modules linked in: vboxnetadp vboxnetflt vboxdrv binfmt_misc kvm_intel kvm xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate zlib_deflate ctr twofish twofish_common camellia serpent blowfish cast5 des_generic xcbc rmd160 sha1_generic crypto_null af_key snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev ftdi_sio joydev tpm_tis tpm usbserial parport_pc asus_atk0110 snd tpm_bios xpad led_class ff_memless soundcore snd_page_alloc lp parport sha256_generic cryptd aes_x86_64 aes_generic dm_crypt raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 multipath linear fbcon tileblit font bitblit softcursor vga16fb vgastate usbhid hid i915 drm_kms_helper drm i2c_algo_bit ahci video output intel_agp e1000e
[ 233.292788] Pid: 44, comm: khubd Not tainted 2.6.32-24-generic #39-Ubuntu System Product Name
[ 233.292791] RIP: 0010:[<ffffffff81333d80>] [<ffffffff81333d80>] tty_ldisc_reinit+0x50/0x60
[ 233.292801] RSP: 0018:ffff880222663a90 EFLAGS: 00010202
[ 233.292804] RAX: ffffffffffffffea RBX: ffff880209b23000 RCX: 0000000000000002
[ 233.292807] RDX: 0000000000000002 RSI: ffffffff81a1ca80 RDI: 00000000000000e0
[ 233.292810] RBP: ffff880222663aa0 R08: 000000000001ce53 R09: 0000000000883a08
[ 233.292813] R10: 0000000000866bb5 R11: 0000000000000000 R12: 00000000000000e0
[ 233.292816] R13: ffff880209b23020 R14: 0000000000000000 R15: 0000000000000001
[ 233.292820] FS: 0000000000000000(0000) GS:ffff880028300000(0000) knlGS:0000000000000000
[ 233.292823] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 233.292826] CR2: 00007f620ca3b000 CR3: 00000001f08d5000 CR4: 00000000000026e0
[ 233.292829] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 233.292832] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 233.292835] Process khubd (pid: 44, threadinfo ffff880222662000, task ffff8802226596f0)
[ 233.292838] Stack:
[ 233.292839] ffff880209b23000 0000000000000000 ffff880222663ad0 ffffffff81333f50
[ 233.292844] <0> ffff8801e0e90480 ffff880209b23208 ffff880209b23000 ffff880209b231d8
[ 233.292850] <0> ffff880222663b30 ffffffff8132b9c6 ffff880209b23208 ffffffff810397a9
[ 233.292855] Call Trace:
[ 233.292860] [<ffffffff81333f50>] tty_ldisc_hangup+0x1c0/0x1f0
[ 233.292866] [<ffffffff8132b9c6>] do_tty_hangup+0x146/0x400
[ 233.292872] [<ffffffff810397a9>] ? default_spin_lock_flags+0x9/0x10
[ 233.292877] [<ffffffff8132bc95>] tty_vhangup+0x15/0x20
[ 233.292885] [<ffffffffa024b72d>] usb_serial_disconnect+0xad/0x1a0 [usbserial]
[ 233.292891] [<ffffffff813dbdf4>] u...

[Termo (termopeten)]

I think I'm affected by this one as well.

My imon display suddenly locks up (I have no idea what trickers it). Syslog states always the same

[ 7091.461995] imon usb_rx_callback_intf0: status(-75): ignored
[ 7091.480045] hub 8-0:1.0: port 1 disabled by hub (EMI?), re-enabling...
[ 7091.480052] usb 8-1: USB disconnect, address 2
[ 7091.481994] imon usb_rx_callback_intf0: status(-108): ignored
[ 7091.512607] imon_disconnect: iMON device (intf0) disconnected
[ 7091.512611] lirc_imon: send_packet: packet tx failed (-108)
[ 7091.512614] lirc_imon: vfd_write: send packet failed for packet #0
[ 7091.585444] lirc_imon: vfd_write: no iMON device present
[ 7091.710441] lirc_imon: vfd_write: no iMON device present
[ 7091.752520] usb 8-1: new low speed USB device using uhci_hcd and address 3
[ 7091.835447] lirc_imon: vfd_write: no iMON device present
[ 7091.908131] usb 8-1: configuration #1 chosen from 1 choice
[ 7091.911056] lirc_dev: lirc_register_driver: sample_rate: 0
[ 7091.911099] lirc_imon: Registered iMON driver (lirc minor: 1)
[ 7091.911160] input: iMON PAD IR Mouse (15c2:ffdc) as /devices/pci0000:00/0000:00:1d.2/usb8/8-$
[ 7091.926009] imon_set_ir_protocol: MCE IR protocol not supported on this device, using iMON p$
[ 7091.926014] lirc_imon: iMON device (15c2:ffdc, intf0) on usb<8:3> initialized
[ 7091.960450] lirc_imon: vfd_write: no iMON device present
[ 7092.085443] lirc_imon: vfd_write: no iMON device present
[ 7092.210449] lirc_imon: vfd_write: no iMON device present

Is it a kernel bug with the usb, and how to fix it then. I have tried to restart usb with no luck. I can only gain use of the imon module for lirc by a complete restart :(

[wheels53 (wheels531)]

Any indication as to whether or not this issue can be resolved? Removing my companies Serial/USB device while the port is open causes Ubuntu 10.04 to completely lock up requiring a hard boot.

usb 2-1: new full speed USB device using ohci_hcd and address 13
Dec 1 14:13:43 Linux-Dev kernel: [ 3679.318764] usb 2-1: configuration #1 chosen from 1 choice
Dec 1 14:13:43 Linux-Dev kernel: [ 3679.321695] cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
Dec 1 14:13:43 Linux-Dev kernel: [ 3679.321737] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
Dec 1 14:15:33 Linux-Dev kernel: [ 3789.432549] usb 2-1: USB disconnect, address 13
Dec 1 14:20:55 Linux-Dev kernel: [ 4111.560040] usb 2-1: new full speed USB device using ohci_hcd and address 14
Dec 1 14:20:55 Linux-Dev kernel: [ 4111.781932] usb 2-1: configuration #1 chosen from 1 choice
Dec 1 14:20:55 Linux-Dev kernel: [ 4111.784863] cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
Dec 1 14:20:55 Linux-Dev kernel: [ 4111.784905] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
Dec 1 14:24:34 Linux-Dev kernel: [ 4329.936781] usb 2-1: USB disconnect, address 14
Dec 1 15:00:18 Linux-Dev kernel: [ 6474.156038] usb 2-1: new full speed USB device using ohci_hcd and address 15
Dec 1 15:00:18 Linux-Dev kernel: [ 6474.378891] usb 2-1: configuration #1 chosen from 1 choice
Dec 1 15:00:18 Linux-Dev kernel: [ 6474.381845] cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
Dec 1 15:00:18 Linux-Dev kernel: [ 6474.381895] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
Dec 1 15:01:23 Linux-Dev kernel: [ 6539.274655] usb 2-1: USB disconnect, address 15
Dec 1 15:13:06 Linux-Dev kernel: [ 7242.728034] usb 2-1: new full speed USB device using ohci_hcd and address 16
Dec 1 15:13:07 Linux-Dev kernel: [ 7242.951196] usb 2-1: configuration #1 chosen from 1 choice
Dec 1 15:13:07 Linux-Dev kernel: [ 7242.954150] cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
Dec 1 15:13:07 Linux-Dev kernel: [ 7242.954197] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
Dec 1 15:13:47 Linux-Dev kernel: [ 7283.554982] usb 2-1: USB disconnect, address 16
Dec 1 15:26:45 Linux-Dev kernel: [ 8061.560029] usb 2-1: new full speed USB device using ohci_hcd and address 17
Dec 1 15:26:45 Linux-Dev kernel: [ 8061.782535] usb 2-1: configuration #1 chosen from 1 choice
Dec 1 15:26:45 Linux-Dev kernel: [ 8061.785560] cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
Dec 1 15:26:45 Linux-Dev kernel: [ 8061.785605] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
Dec 1 16:07:15 Linux-Dev kernel: [10491.780369] usb 2-1: USB disconnect, address 17
Dec 1 16:07:15 Linux-Dev kernel: [10491.783060] ------------[ cut here ]------------
Dec 1 16:07:15 Linux-Dev kernel: [10491.783070] kernel BUG at /build/buildd/linux-2.6.32/drivers/char/tty_ldisc.c:707!
Dec 1 16:07:15 Linux-Dev kernel: [10491.783076] invalid opcode: 0000 [#1] SMP
Dec 1 16:07:15 Linux-Dev kernel: [10491.783084] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/usb2/2-1/devnum
Dec 1 16:07:15 Linux-Dev kernel: [10491.783089] Modules linked in: n...