Ubuntu
linux-source-2.6.20 package

kernel oops (wvdailconfig or module ?)

Bug #86969 reported by Lorenco Trichardt
2
Affects Status Importance Assigned to Milestone
linux-source-2.6.20 (Ubuntu)
Invalid
Undecided
Chuck Short

Bug Description

running : wvdialconf try to configure latest 3G HSDPA card,
Editing `/etc/wvdial.conf'.

Scanning your serial ports for a modem.

WvModem<*1>: Cannot set information for serial port.
ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Modem Port Scan<*1>: S1 S2 S3
WvModem<*1>: Cannot get information for serial port.
ttyUSB0<*1>: ATQ0 V1 E1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- ERROR
ttyUSB0<*1>: Modem Identifier: ATI -- Manufacturer: HUAWEI TECHNOLOGIES CO., LTD.
ttyUSB0<*1>: Speed 4800: AT -- OK
ttyUSB0<*1>: Speed 9600: AT -- OK
ttyUSB0<*1>: Speed 19200: AT -- OK
ttyUSB0<*1>: Speed 38400: AT -- OK
ttyUSB0<*1>: Speed 57600: AT -- OK
ttyUSB0<*1>: Speed 115200: AT -- OK
ttyUSB0<*1>: Speed 230400: AT -- OK
ttyUSB0<*1>: Speed 460800: AT -- OK
ttyUSB0<*1>: Max speed is 460800; that should be safe.
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK

Message from syslogd@ibmtux at Thu Feb 22 10:15:35 2007 ... ibmtux kernel: [16792.784000] Oops: 0002 [#1]
Message from syslogd@ibmtux at Thu Feb 22 10:15:35 2007 ...ibmtux kernel: [16792.784000] SMP
....

dmesg output:
[16495.800000] PPP generic driver version 2.4.2
[16790.696000] ttyS1: LSR safety check engaged!
[16792.784000] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000020
[16792.784000] printing eip:
[16792.784000] f9c4992c
[16792.784000] *pde = 00000000
[16792.784000] Oops: 0002 [#1]
[16792.784000] SMP
[16792.784000] Modules linked in: ppp_generic slhc pl2303 option usbserial ohci_hcd binfmt_misc rfcomm l2cap nvram uinput ppdev radeon drm acpi_cpufreq cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table video battery ibm_acpi container sbs button i2c_ec dock ac asus_acpi backlight tun nls_iso8859_1 nls_cp437 vfat fat ext3 jbd mbcache ipv6 eeprom i2c_i801 i2c_core lp fuse pcmcia tsdev joydev hci_usb irtty_sir sir_dev snd_intel8x0 snd_ac97_codec bluetooth ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss irda crc_ccitt parport_pc parport wlan_scan_sta ath_rate_sample snd_seq_midi snd_rawmidi snd_seq_midi_event pcspkr psmouse serio_raw snd_seq snd_timer yenta_socket ath_pci wlan ath_hal(P) snd_seq_device snd soundcore snd_page_alloc rsrc_nonstatic pcmcia_core iTCO_wdt iTCO_vendor_support af_packet intel_agp agpgart shpchp pci_hotplug evdev reiserfs sg sd_mod piix generic ata_piix e1000 ata_generic libata scsi_mod ehci_hcd uhci_hcd usbcore thermal processor fan capability commoncap vesafb fbcon tileblit font bitblit softcursor
[16792.784000] CPU: 0
[16792.784000] EIP: 0060:[<f9c4992c>] Tainted: P VLI
[16792.784000] EFLAGS: 00210246 (2.6.20-8-generic #2)
[16792.784000] EIP is at pl2303_open+0x44c/0x9c0 [pl2303]
[16792.784000] eax: 00000000 ebx: 00000000 ecx: 00200246 edx: de9a8000
[16792.784000] esi: d8f68d40 edi: e5c4f200 ebp: 00000000 esp: c2867e38
[16792.784000] ds: 007b es: 007b ss: 0068
[16792.784000] Process wvdialconf (pid: 29029, ti=c2866000 task=d99b7a90 task.ti=c2866000)
[16792.784000] Stack: 00000040 00000009 00000000 00000000 00000000 00000064 00000000 00000003
[16792.784000] 00200292 00000000 d5b73c00 d8f68c00 00200292 c02324c7 00000000 c0233120
[16792.784000] 00000000 d5201980 00000000 e5c4f200 d8f68d40 d5b73c00 e5c4f20c f9c401dc
[16792.784000] Call Trace:
[16792.784000] [<c02324c7>] tty_ldisc_enable+0x27/0x30
[16792.784000] [<c0233120>] init_dev+0x250/0x5f0
[16792.784000] [<f9c401dc>] serial_open+0x10c/0x160 [usbserial]
[16792.784000] [<c0232384>] check_tty_count+0x14/0xb0
[16792.784000] [<c0235f07>] tty_open+0x147/0x2f0
[16792.784000] [<c0235dc0>] tty_open+0x0/0x2f0
[16792.784000] [<c0178dc8>] chrdev_open+0xa8/0x170
[16792.784000] [<c0178d20>] chrdev_open+0x0/0x170
[16792.784000] [<c017461a>] __dentry_open+0xba/0x1c0
[16792.784000] [<c01747d5>] nameidata_to_filp+0x35/0x40
[16792.784000] [<c0174830>] do_filp_open+0x50/0x60
[16792.784000] [<c017488e>] do_sys_open+0x4e/0xf0
[16792.784000] [<c017496c>] sys_open+0x1c/0x20
[16792.784000] [<c01031d0>] sysenter_past_esp+0x69/0xa9
[16792.784000] =======================
[16792.784000] Code: 20 8b 47 44 ba d0 00 00 00 e8 e1 e2 79 ff 85 c0 89 c3 0f 85 13 05 00 00 8b 2d 80 d5 c4 f9 85 ed 0f 85 2d 04 00 00 8b 47 24 8b 16 <89> 50 20 8b 47 24 ba d0 00 00 00 e8 b4 e2 79 ff 89 c3 31 c0 85
[16792.784000] EIP: [<f9c4992c>] pl2303_open+0x44c/0x9c0 [pl2303] SS:ESP 0068:c2867e38
[16792.784000]

ProblemType: Bug
Date: Thu Feb 22 10:17:23 2007
DistroRelease: Ubuntu 7.04
Uname: Linux ibmtux 2.6.20-8-generic #2 SMP Tue Feb 13 05:18:42 UTC 2007 i686 GNU/Linux

Revision history for this message
Chuck Short (zulcss) wrote :

When does the oops happen affter you disconnect or when you connect with wvdial?

Thanks
chuck

Changed in linux-source-2.6.20:
assignee: nobody → zulcss
status: Unconfirmed → Needs Info
Revision history for this message
Lorenco Trichardt (trichalo) wrote : Re: [Bug 86969] Re: kernel oops (wvdailconfig or module ?)
Download full text (4.9 KiB)

It happens while I run wvdialconf.... I seems (not sure) that it happens
just before the load ?....

I have a manually created file with wvdial that actually works... so I
am not sure what wvdailconf is trying to do that causes the crash ?
LEt me know if I need to debug some more....

(If I run it now I get.... Same?
....
ttyS1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Modem Port Scan<*1>: S2 S3
WvModem<*1>: Cannot get information for serial port.
ttyUSB0<*1>: ATQ0 V1 E1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyUSB0<*1>: Modem Identifier: ATI -- Manufacturer: HUAWEI TECHNOLOGIES
CO., LTD.
ttyUSB0<*1>: Speed 4800: AT -- OK
ttyUSB0<*1>: Speed 9600: AT -- OK
ttyUSB0<*1>: Speed 19200: AT -- OK
ttyUSB0<*1>: Speed 38400: AT -- OK
ttyUSB0<*1>: Speed 57600: AT -- OK
ttyUSB0<*1>: Speed 115200: AT -- OK
ttyUSB0<*1>: Speed 230400: AT -- OK
ttyUSB0<*1>: Speed 460800: AT -- OK
ttyUSB0<*1>: Max speed is 460800; that should be safe.
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
Segmentation fault

DMESG output:
[36620.456000] BUG: unable to handle kernel NULL pointer dereference at
virtual address 00000020
[36620.456000] printing eip:
[36620.456000] f978892c
[36620.456000] *pde = 00000000
[36620.456000] Oops: 0002 [#1]
[36620.456000] SMP
[36620.456000] Modules linked in: battery ac ibm_acpi thermal fan button
e1000 ath_pci ppp_deflate zlib_deflate bsd_comp ppp_async binfmt_misc
rfcomm l2cap bluetooth tun nvram uinput ppdev ipv6 acpi_cpufreq
cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand
cpufreq_conservative freq_table video container sbs i2c_ec dock
asus_acpi backlight ppp_generic slhc nls_iso8859_1 nls_cp437 vfat fat
ext3 jbd mbcache eeprom i2c_i801 i2c_core lp fuse pl2303 option
usbserial snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss
snd_pcm joydev snd_seq_dummy snd_seq_oss ohci_hcd snd_seq_midi
snd_rawmidi irtty_sir sir_dev wlan_scan_sta pcmcia snd_seq_midi_event
snd_seq snd_timer ath_rate_sample irda crc_ccitt psmouse snd_seq_device
snd parport_pc parport pcspkr wlan ath_hal(P) yenta_socket
rsrc_nonstatic pcmcia_core serio_raw soundcore snd_page_alloc intel_agp
agpgart iTCO_wdt iTCO_vendor_support shpchp pci_hotplug af_packet tsdev
evdev reiserfs sg sd_mod piix generic ata_piix ata_generic libata
scsi_mod ehci_hcd uhci_hcd usbcore processor capability commoncap vesafb
fbcon tileblit font bitblit softcursor
[36620.456000] CPU: 0
[36620.456000] EIP: 0060:[<f978892c>] Tainted: P VLI
[36620.456000] EFLAGS: 00210246 (2.6.20-9-generic #2)
[36620.456000] EIP is at pl2303_open+0x44c/0x9c0 [pl2303]
[36620.456000] eax: 00000000 ebx: 00000000 ecx: 00200246 edx:
e7e36800
[36620.456000] esi: d98c0940 edi: f0b8f400 ebp: 00000000 esp:
dbbc9e38
[36620.456000] ds: 007b es: 007b ss: 0068
[36620.456000] Process wvdialconf (pid: 6466, ti=dbbc8000 task=de862560
task.ti=dbbc8000)
[36620.456000] Stack: 00000040 00000009 00000000 00000000 00000000
00000064 00000000 00000003
[36620.456000] 00200292 0000000...

Read more...

Revision history for this message
Phillip Lougher (phillip-lougher) wrote :

Can you give the full dmesg output, including the lines before the oops?

Also, can you run strace on wvdialconf, and attach the output, i.e.

strace -fo strace.out wvdailconf

the output will be in the file strace.out.

Thanks.

Revision history for this message
Lorenco Trichardt (trichalo) wrote :

I think the latest updates fixed this ??

the oops and segmentation fault have gone!!!! :)
I'm glad but hate it when that happens.... never know what cuased it :(

On Thu, 2007-03-08 at 20:27 +0000, Phillip Lougher wrote:

> Can you give the full dmesg output, including the lines before the oops?
>
> Also, can you run strace on wvdialconf, and attach the output, i.e.
>
> strace -fo strace.out wvdailconf
>
> the output will be in the file strace.out.
>
> Thanks.
>

Groetnis ...
Lorenco Trichardt
<email address hidden>

---------------------------------------------
Written Today, 09 Mar 2007 at 05:35
---------------------------------------------

Phillip Lougher (phillip-lougher)
Changed in linux-source-2.6.20:
status: Needs Info → Rejected
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