Error "free(): double free detected in tcache 2" when querying info from libqmi via Python API

[Martin Maurer]

I also opened a topic in Raspberry forum and asked there for help. You 
can find the post here:

https://forums.raspberrypi.com/viewtopic.php?t=356710


Am 23.09.2023 um 13:04 schrieb Martin Maurer:
> Hello Aleksander,
>
> I already tried to update (via sudo apt update/upgrade/dist-upgrade) 
> my version on Raspberry Pi 4,
>
> but version is and stays at 1.26.10-0.1
>
>
> trio at radio2:~ $ qmicli --version
> qmicli 1.26.10
> Copyright (C) 2012-2020 Aleksander Morgado
> License GPLv2+: GNU GPL version 2 or later 
> <http://gnu.org/licenses/gpl-2.0.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
>
> trio at radio2:~ $ sudo apt list | grep libqmi
>
> WARNING: apt does not have a stable CLI interface. Use with caution in 
> scripts.
>
> libqmi-glib-dev/oldstable,now 1.26.10-0.1 arm64 [installed]
> libqmi-glib-dev/oldstable 1.26.10-0.1 armhf
> libqmi-glib-doc/oldstable,oldstable 1.26.10-0.1 all
> libqmi-glib5/oldstable,now 1.26.10-0.1 arm64 [installed,automatic]
> libqmi-glib5/oldstable 1.26.10-0.1 armhf
> libqmi-proxy/oldstable,now 1.26.10-0.1 arm64 [installed,automatic]
> libqmi-proxy/oldstable 1.26.10-0.1 armhf
> libqmi-utils/oldstable,now 1.26.10-0.1 arm64 [installed]
> libqmi-utils/oldstable 1.26.10-0.1 armhf
> trio at radio2:~ $
>
> How can I update, what is already delivered by my system?
>
> Or is the way to go to download libqmi sources and build/install.
>
> Will it update the part which could make me problems?
>
> Take the sources from here? Is this the most up-to-date-version?
>
> https://gitlab.freedesktop.org/mobile-broadband/libqmi
>
> 1.26.10 seems to be around 2 years old.
>
> https://gitlab.freedesktop.org/mobile-broadband/libqmi/-/tags/1.26.10
>
> How to officially get a newer version into Raspberry Pi OS 
> Environment? Do you/does someone know?
>
> Many thanks!
>
> Best regards,
>
> Martin
>
>
> Am 22.09.2023 um 15:04 schrieb Aleksander Morgado:
>> Hey,
>>
>>> I am trying to learn how to use the Python API of libqmi.
>>> I extended the simple-tester-python.py to press a key and query some 
>>> information.
>>> When trying to get the revision, I get the correct revision, but 
>>> afterwards I get the error message “free(): double free detected in 
>>> tcache 2”.
>>> I tried the same with getting the model, and same behaviour: Model 
>>> can be printed and is correct, but then same error message.
>> What libqmi version are you using?
>>