[Bug 580334] [NEW] Can't open device /dev/noz0

Fri May 14 05:44:32 UTC 2010

Public bug reported:

I am not able to use nozomi GTmax modem but device exists in /dev

root at hostp ~]# comgt -d /dev/noz0
Can't open device /dev/noz0.
[root at hostp ~]# ls -l /dev/noz*
crw-rw---- 1 root uucp 252, 0 2009-10-20 09:38 /dev/noz0
crw-rw---- 1 root uucp 252, 1 2009-10-20 09:38 /dev/noz1
crw-rw---- 1 root uucp 252, 2 2009-10-20 09:38 /dev/noz2
crw-rw---- 1 root uucp 252, 3 2009-10-20 09:38 /dev/noz3 

Warning: dev (noz0) tty->count(0) != #fd's(1) in tty_open
noz: activated 0: f685b860
BUG: unable to handle kernel NULL pointer dereference at 000000bc
IP: [<c046b03c>] mutex_lock+0xc/0x30
*pde = 00000000
Oops: 0002 [#1] SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:14.4/0000:02:06.0/net/mon.wlan0                                              /flags
Modules linked in: binfmt_misc xt_state xt_tcpudp ipt_MASQUERADE iptable_nat nf_                                              nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 nozomi arc4 pcmcia ecb ath5k m                                              ac80211 ath iptable_filter ppdev yenta_socket parport_pc rsrc_nonstatic r8169 ip                                              _tables lp x_tables usbserial pcmcia_core mii shpchp parport cfg80211 i2c_piix4                                               k8temp led_class serio_raw

Pid: 1429, comm: wvdial Not tainted 2.6.34-rc6-m03 #1 GA-MA69VM-S2/GA-MA69VM-S2
EIP: 0060:[<c046b03c>] EFLAGS: 00210296 CPU: 0
EIP is at mutex_lock+0xc/0x30
EAX: 000000bc EBX: 000000bc ECX: f4e1ec00 EDX: f685b800
ESI: 00001000 EDI: 000000bc EBP: 00000000 ESP: f68f5b18
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process wvdial (pid: 1429, ti=f68f4000 task=f60462e0 task.ti=f68f4000)
Stack:
 00000000 00001000 f802d3c5 f4e1ec00 00000000 f802d410 c02fda15 c02fb625
<0> f6ad2700 f4e1ec00 f6ba78b8 00000000 c02f7a9a f306bac0 c02fb4d0 00000004
<0> 00000010 f6ad2700 00000000 c01c67b7 f306bac0 00200286 ff000000 00000005
Call Trace:
 [<f802d3c5>] ? ntty_write_room+0x45/0x90 [nozomi]
 [<f802d410>] ? ntty_write+0x0/0x1f0 [nozomi]
 [<c02fda15>] ? tty_write_room+0x15/0x20
 [<c02fb625>] ? n_tty_poll+0x155/0x170
 [<c02f7a9a>] ? tty_poll+0x6a/0x80
 [<c02fb4d0>] ? n_tty_poll+0x0/0x170
 [<c01c67b7>] ? do_select+0x2b7/0x4f0
 [<c01c6f30>] ? __pollwait+0x0/0xf0
 [<c028c569>] ? elv_rb_add+0x79/0x90
 [<c029904c>] ? cfq_insert_request+0x46c/0x4f0
 [<c02a1516>] ? vsnprintf+0xb6/0x7f0
 [<c03d1972>] ? raw_pci_write+0x82/0x90
 [<c014f22b>] ? up+0xb/0x40
 [<c01368eb>] ? release_console_sem+0x1ab/0x1f0
 [<c01b488d>] ? __mem_cgroup_try_charge+0x5d/0x400
 [<c061ffff>] ? powernow_cpu_init+0x16/0x426
 [<c02a07db>] ? string+0x3b/0xd0
 [<c046a164>] ? printk+0x17/0x1b
 [<f802be4e>] ? ntty_activate+0x7e/0xf0 [nozomi]
 [<c012a262>] ? __wake_up+0x42/0x60
 [<c0300757>] ? tty_port_block_til_ready+0x1e7/0x270
 [<c03008b9>] ? tty_port_tty_set+0x39/0x60
 [<c014a400>] ? autoremove_wake_function+0x0/0x40
 [<c02fa8f9>] ? tty_open+0x279/0x530
 [<c031ddc2>] ? kobj_lookup+0xf2/0x140
 [<c01c6ba3>] ? core_sys_select+0x1b3/0x2b0
 [<c02fe899>] ? tty_mode_ioctl+0xa9/0x420
 [<c02f9679>] ? tty_ioctl+0xc9/0x7d0
 [<c0198e19>] ? handle_mm_fault+0x139/0x9c0
 [<c02f95b0>] ? tty_ioctl+0x0/0x7d0
 [<c01c480b>] ? vfs_ioctl+0x2b/0xb0
 [<c01c49f9>] ? do_vfs_ioctl+0x79/0x5c0
 [<c046f3a0>] ? do_page_fault+0x0/0x3e0
 [<c046f544>] ? do_page_fault+0x1a4/0x3e0
 [<c01c6e5f>] ? sys_select+0x2f/0xb0
 [<c0102c10>] ? sysenter_do_call+0x12/0x22
Code: 8b 74 24 24 8b 7c 24 28 8b 6c 24 2c 83 c4 30 c3 00 00 00 00 00 00 00 00 00                                               00 00 00 00 00 00 83 ec 08 89 1c 24 89 c3 89 74 24 04 <3e> ff 08 79 05 e8 ba 00                                               00 00 89 e0 8b 74 24 04 25 00 e0 ff ff
EIP: [<c046b03c>] mutex_lock+0xc/0x30 SS:ESP 0068:f68f5b18
CR2: 00000000000000bc
---[ end trace 6e73d3662da499c0 ]---
Warning: dev (noz0) tty->count(0) != #fd's(1) in tty_release_dev
tty_release_dev: bad tty->count (-1) for noz0

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-generic 2.6.32.22.23
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  marek      1548 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'I82801AAICH'/'Intel 82801AA-ICH with STAC9700,83,84 at irq 21'
   Mixer name	: 'SigmaTel STAC9700,83,84'
   Components	: 'AC97a:83847600'
   Controls      : 34
   Simple ctrls  : 24
Date: Fri May 14 09:38:19 2010
HibernationDevice: RESUME=UUID=67e31985-2dcb-4a93-998e-a1fc9d4d9fe8
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
IwConfig:
 lo        no wireless extensions.

 eth0      no wireless extensions.
Lsusb:
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: innotek GmbH VirtualBox
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=46e0e10d-d145-43b8-9cf9-ab287c3337d3 ro
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:

SourcePackage: linux
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug i386 lucid needs-upstream-testing networking nozomi

-- 
Can't open device /dev/noz0
https://bugs.launchpad.net/bugs/580334
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