[Bug 298006] [NEW] Kernel module usbserial faults on EV-DO USB modem
k0l0b0k
k0l0b0k.void at gmail.com
Fri Nov 14 10:36:31 UTC 2008
Public bug reported:
I'm using ZTE Evolution EV-DO USB modem. On connect, usbserial detects
modem as /dev/ttyUSB0 (and 1, and 2, where is ttyUSB0 is real modem
tty). I'm configured ppp connection (tryed gnome-ppp, kppp, wvdial and
pppd directly). In all cases pppd hungs, and syslog contains next
information:
[ cut here ]------------
[13536.262455] WARNING: at /build/buildd/linux-2.6.27/drivers/usb/serial/usb-serial.c:324 serial_write_room+0x75/0x80 [usbserial]()
[13536.262455] Modules linked in: ppp_async ppp_generic slhc option usbserial isofs udf crc_itu_t ipv6 af_packet i915 drm binfmt_misc rfcomm bridge stp bnep sco l2cap bluetooth ppdev cpufreq_powersave cpufreq_stats cpufreq_conservative cpufreq_ondemand freq_table cpufreq_userspace pci_slot sbs sbshc iptable_filter ip_tables x_tables sbp2 parport_pc lp parport joydev pcmcia acer_wmi led_class psmouse serio_raw pcspkr evdev uvcvideo compat_ioctl32 videodev nsc_ircc v4l1_compat battery irda ac crc_ccitt ieee80211_crypt_tkip wl(P) ieee80211_crypt snd_hda_intel container snd_pcm_oss snd_mixer_oss video output sdhci_pci sdhci tifm_7xx1 snd_pcm mmc_core tifm_core yenta_socket rsrc_nonstatic pcmcia_core snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi wmi snd_seq_midi_event snd_seq button snd_timer snd_seq_device iTCO_wdt iTCO_vendor_support intel_agp agpgart shpchp pci_hotplug snd soundcore snd_page_alloc ext3 jbd mbcache sr_mod cdrom sd_mod crc_t10dif sg ata_piix ata_generic usbhid hid ahci pata_acpi libata scsi_mod ohci1394 dock ieee1394 tg3 libphy uhci_hcd ehci_hcd usbcore thermal processor fan fbcon tileblit font bitblit softcursor fuse
[13536.262455] Pid: 0, comm: swapper Tainted: P W 2.6.27-7-generic #1
[13536.262455] [<c037c406>] ? printk+0x1d/0x1f
[13536.262455] [<c0131de9>] warn_on_slowpath+0x59/0x90
[13536.262455] [<f8891793>] ? uhci_urb_enqueue+0x53/0x2d0 [uhci_hcd]
[13536.262455] [<f88d7fa9>] ? usb_hcd_submit_urb+0x79/0x180 [usbcore]
[13536.262455] [<f88d838f>] ? usb_submit_urb+0xff/0x260 [usbcore]
[13536.262455] [<f8e7655e>] ? option_write+0xe/0x230 [option]
[13536.262455] [<c0151c84>] ? clockevents_program_event+0x14/0x150
[13536.262455] [<c037dfae>] ? account_scheduler_latency+0xe/0x220
[13536.262455] [<f8e7647c>] ? option_write_room+0xc/0x70 [option]
[13536.262455] [<f8e7647c>] ? option_write_room+0xc/0x70 [option]
[13536.262455] [<f9134665>] serial_write_room+0x75/0x80 [usbserial]
[13536.262455] [<c02a676d>] tty_write_room+0x1d/0x20
[13536.262455] [<c02a421f>] opost+0x1f/0x260
[13536.262455] [<c01be546>] ? kill_fasync+0x16/0x50
[13536.262455] [<c02a60ca>] n_tty_receive_char+0x54a/0x700
[13536.262455] [<c02a64d8>] n_tty_receive_buf+0x258/0x4b0
[13536.262455] [<c0123454>] ? __enqueue_entity+0xd4/0x100
[13536.262455] [<c0124aba>] ? enqueue_entity+0xda/0x2f0
[13536.262455] [<c012a708>] ? enqueue_task_fair+0x48/0x50
[13536.262455] [<c0120f97>] ? enqueue_task+0x57/0x70
[13536.262455] [<c02a7f8b>] ? tty_ldisc_try+0x3b/0x50
[13536.262455] [<c02a2496>] flush_to_ldisc+0xf6/0x1c0
[13536.262455] [<c02a25cb>] tty_flip_buffer_push+0x6b/0x80
[13536.262455] [<f8e76f43>] option_indat_callback+0xb3/0x12c [option]
[13536.262455] [<f88d6d04>] ? unmap_urb_for_dma+0x14/0x130 [usbcore]
[13536.262455] [<f88d8684>] ? usb_unanchor_urb+0x14/0xb0 [usbcore]
[13536.262455] [<f88d6e6d>] usb_hcd_giveback_urb+0x4d/0xd0 [usbcore]
[13536.262455] [<c037e62d>] ? _spin_lock+0xd/0x10
[13536.262455] [<f888fd1c>] uhci_giveback_urb+0x8c/0x200 [uhci_hcd]
[13536.262455] [<f888fa2a>] ? uhci_result_common+0x22a/0x300 [uhci_hcd]
[13536.262455] [<f889017f>] uhci_scan_qh+0x23f/0x460 [uhci_hcd]
[13536.262455] [<c01136c0>] ? lapic_next_event+0x20/0x30
[13536.262455] [<f8890553>] uhci_scan_schedule+0x153/0x270 [uhci_hcd]
[13536.262455] [<c0136976>] ? set_normalized_timespec+0x16/0x90
[13536.262455] [<f8891b6b>] uhci_irq+0x7b/0x160 [uhci_hcd]
[13536.262455] [<f88b466a>] ? ehci_irq+0x4a/0x180 [ehci_hcd]
[13536.262455] [<c014e63b>] ? getnstimeofday+0x4b/0x100
[13536.262455] [<f88d69e0>] usb_hcd_irq+0x40/0x90 [usbcore]
[13536.262455] [<c01770b1>] handle_IRQ_event+0x41/0x80
[13536.262455] [<c0178954>] handle_fasteoi_irq+0x74/0xe0
[13536.262455] [<c0106c15>] do_IRQ+0x45/0x80
[13536.262455] [<c0105003>] common_interrupt+0x23/0x30
[13536.262455] [<c01700d8>] ? __audit_mq_getsetattr+0x68/0xb0
[13536.262455] [<f8876800>] ? acpi_idle_enter_bm+0x268/0x2b7 [processor]
[13536.262455] [<c02dbf7b>] cpuidle_idle_call+0x7b/0xd0
[13536.262455] [<c010288d>] cpu_idle+0x7d/0x140
[13536.262455] [<c036edd3>] rest_init+0x53/0x60
[13536.262455] =======================
[13536.262455] ---[ end trace 9f1d4cd5e0f887db ]---
This modem is tested on two notebooks (I can give you hardware details if needed) with the same result.
Under Windows system modem works properly.
As I understand this is kernel module usbserial bug. I will be glad to give you any help to resolve this trouble.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
--
Kernel module usbserial faults on EV-DO USB modem
https://bugs.launchpad.net/bugs/298006
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