we are using a APU Board with the MC7455 modem and smstools 3 to sent sms with them.
Used Kernel is 4.9.0-bpo.
We are only using at commands to communicate with the modem.
At some point the modem will be resetted and reconnected to the system via udev rules and at commands.
Are there any known bugs with this hardware combination which could lead to a kernel crash?