Comment 2 for bug 86969

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 00000000 f7db3c00 e4162e40 00200292
c0232497 00000000 c02330f0
[36620.456000] 00000000 f425f740 00000000 f0b8f400 d98c0940
f7db3c00 f0b8f40c f977f1dc
[36620.456000] Call Trace:
[36620.456000] [<c0232497>] tty_ldisc_enable+0x27/0x30
[36620.456000] [<c02330f0>] init_dev+0x250/0x5f0
[36620.456000] [<f977f1dc>] serial_open+0x10c/0x160 [usbserial]
[36620.456000] [<c0232354>] check_tty_count+0x14/0xb0
[36620.456000] [<c0235ed7>] tty_open+0x147/0x2f0
[36620.456000] [<c0235d90>] tty_open+0x0/0x2f0
[36620.456000] [<c0178dc8>] chrdev_open+0xa8/0x170
[36620.456000] [<c0178d20>] chrdev_open+0x0/0x170
[36620.456000] [<c017461a>] __dentry_open+0xba/0x1c0
[36620.456000] [<c01747d5>] nameidata_to_filp+0x35/0x40
[36620.456000] [<c0174830>] do_filp_open+0x50/0x60
[36620.456000] [<c017488e>] do_sys_open+0x4e/0xf0
[36620.456000] [<c017496c>] sys_open+0x1c/0x20
[36620.456000] [<c01031d0>] sysenter_past_esp+0x69/0xa9
[36620.456000] =======================
[36620.456000] Code: 20 8b 47 44 ba d0 00 00 00 e8 e1 f2 c5 ff 85 c0 89
c3 0f 85 13 05 00 00 8b 2d 80 c5 78 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 f2 c5 ff 89 c3 31 c0 85
[36620.456000] EIP: [<f978892c>] pl2303_open+0x44c/0x9c0 [pl2303] SS:ESP
0068:dbbc9e38
[36620.456000]

On Wed, 2007-03-07 at 13:31 +0000, ChuckShort wrote:

> When does the oops happen affter you disconnect or when you connect with
> wvdial?
>
> Thanks
> chuck
>
> ** Changed in: linux-source-2.6.20 (Ubuntu)
> Assignee: (unassigned) => ChuckShort
> Status: Unconfirmed => Needs Info
>

Groetnis ...
Lorenco Trichardt
<email address hidden>

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Written Today, 07 Mar 2007 at 18:08
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