assertion 'g_utf8_validate (string, -1, NULL)' failed

[Aleksander Morgado]

On Wed, Oct 21, 2015 at 2:00 PM, Aleksander Morgado
<aleksander at aleksander.es> wrote:
>
>>
>> Hi, I am working with Telit LE910. It works properly with ModemManager using QMI, but if I disable and enable the modem again, I get the following:
>>
>> root at ccimx6sbc:~# mmcli -m 0 -e
>>
>> ModemManager[698]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (disabled -> enabling)
>>
>> ModemManager[698]: <warn>  (ttyUSB2): port attributes not fully set
>>
>> ModemManager[698]: <warn>  (ttyUSB3): port attributes not fully set
>>
>> ModemManager[698]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (unknown -> registering)
>>
>>
>>
>> (ModemManager:698): GLib-CRITICAL **: g_variant_new_string: assertion 'g_utf8_validate (string, -1, NULL)' failed
>>
>>
>>
>> (ModemManager:698): GLib-CRITICAL **: g_variant_ref_sink: assertion 'value != NULL' failed
>>
>> ModemManager[698]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (registering -> home)
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (17): 'MissingArgument'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (52): 'DeviceNotReady'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (48): 'InvalidArgument'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (48): 'InvalidArgument'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (17): 'MissingArgument'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (52): 'DeviceNotReady'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (48): 'InvalidArgument'
>>
>> ModemManager[698]: Couldn't read SMS messages: QMI protocol error (48): 'InvalidArgument'
>>
>> ModemManager[698]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabling -> registered)
>>
>> successfully enabled the modem
>>
>>
>> Why are those asserts coming out? How can I fix those?
>
> Which ModemManager version is this?
>
> Can you MM with --debug to get full debug logs? See:
> http://www.freedesktop.org/wiki/Software/ModemManager/Debugging/
>
> I'd bet these are related to content of read SMS messages.


Reporter replied privately. Looks like the problem is actually in the
Operator name returned from the modem...

>>>>>> TLV:
>>>>>>   type       = "Current PLMN" (0x12)
>>>>>>   length     = 15
>>>>>>   value      = D6:00:01:00:0A:F6:37:39:6C:7E:BB:CB:A0:E2:14
>>>>>>   translated = [ mcc = '214' mnc = '1' description = '��~܋b' ]

21401 is Vodafone Spain, it should say something like "vodafone ES",
not that garbage string. We may need to validate the incoming strings
before using them; directly in libqmi.

-- 
Aleksander
https://aleksander.es