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Description of problem:
ModemManager is crashing when probing if there are multiple ttyUSB* devices (ttyUSB0 and ttyUSB1 in this case).
The driver used here is 'cp210x'. During the use of minicom application on /tty/USB0, ModemManager crash is displayed.
When minicom first starts up it seems that before modemmanager quits, we get a lot of gibberish from that tty.
ERROR:mm-port-probe.c:1289:mm_port_probe_run: assertion failed: (self->priv->task == NULL)
Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux Workstation release 7.1
ModemManager-1.1.0-6.git20130913.el7.x86_64
How reproducible:
Always
Steps to Reproduce:
1. Use of minicom program on /tty/USB0
2.
3.
Actual results:
ModemManager crash with below error.
ERROR:mm-port-probe.c:1289:mm_port_probe_run: assertion failed: (self->priv->task == NULL)
Expected results:
No crashes or errors.
Additional info:
ABT Server link : https://api.access.redhat.com/rs/telemetry/abrt/reports/bthash/671de6a93a6e76f8612c45a228276534a35db51c
Blacklisting the device with '/lib/udev/rules.d/100-mm-usb-device-blacklist.rules' didn't work after which the device nodes (/dev/ttyUSB*) aren't created.
ACTION!="add|change", GOTO="mm_usb_device_blacklist_end"
SUBSYSTEM!="usb", GOTO="mm_usb_device_blacklist_end"
ENV{DEVTYPE}!="usb_device", GOTO="mm_usb_device_blacklist_end"
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea70", ENV{ID_MM_DEVICE_IGNORE}="1"
LABEL="mm_usb_device_blacklist_end"
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHEA-2016-2556.html