ModemManager gives up during initializing with AT commands
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	g66925
	Oct 4 2022, 9:33 AM

Description

(ModemManager:3297): GLib-CRITICAL **: 11:29:24.964: g_regex_match_full: assertion 'regex != NULL' failed
ModemManager[3297]: <debug> [1664875764.965020] [modem0/ttyUSB2/at] operation failure: 100 (Unknown error)
ModemManager[3297]: <warn>  [1664875764.965068] [modem0] couldn't load supported IP families: Unknown error
ModemManager[3297]: <debug> [1664875764.965114] [modem0] loading power state...
ModemManager[3297]: <debug> [1664875764.965152] [modem0/ttyUSB2/at] device open count is 3 (open)
ModemManager[3297]: <debug> [1664875764.965199] [modem0/ttyUSB2/at] device open count is 2 (close)
ModemManager[3297]: <debug> [1664875764.965245] [modem0/ttyUSB2/at] --> 'AT+CFUN?<CR>'
ModemManager[3297]: <debug> [1664875764.975034] [modem0/ttyUSB2/at] <-- '<CR><LF>+CFUN: 1<CR><LF><CR><LF>OK<CR><LF>'
ModemManager[3297]: <debug> [1664875764.975270] [modem0] checking if unlock required...
ModemManager[3297]: <debug> [1664875764.975300] [modem0/ttyUSB2/at] device open count is 3 (open)
ModemManager[3297]: <debug> [1664875764.975342] [modem0/ttyUSB2/at] device open count is 2 (close)
ModemManager[3297]: <debug> [1664875764.975385] [modem0/ttyUSB2/at] --> 'AT+CPIN?<CR>'
ModemManager[3297]: <debug> [1664875764.985321] [modem0/ttyUSB2/at] <-- '<CR><LF>+CPIN: SIM PIN<CR><LF><CR><LF>OK<CR><LF>'
malloc(): smallbin double linked list corrupted
Aborted

It worked properly before upgrade which I performed 2022-09-29 15:08.

Event Timeline

g66925 created this task.Oct 4 2022, 9:33 AM

Herald added a project: Lacks Project. · View Herald TranscriptOct 4 2022, 9:33 AM

Is this still an issue?

Today eopkg upgrade was done and problem still persist.

ModemManager[2813]: <debug> [1684322657.565617] [ttyUSB3/at] <-- 'AT'

(ModemManager:2813): GLib-CRITICAL **: 13:24:17.565: g_regex_match_full: assertion 'regex != NULL' failed
ModemManager[2813]: <debug> [1684322657.565830] [ttyUSB2/at] <-- 'AT'

(ModemManager:2813): GLib-CRITICAL **: 13:24:17.565: g_regex_match_full: assertion 'regex != NULL' failed
malloc(): smallbin double linked list corrupted
Aborted

@g66925

Thanks for responding. Will triage as Normal priority.

This appears to depend on (at least) four different components:

kernel (for qmi/mbim drivers)
https://dev.getsol.us/source/modem-manager/
https://dev.getsol.us/source/libqmi/
https://dev.getsol.us/source/libmbim/

It's been a few years since this saw a stack upgrade + modem enablement run.

@joebonrichie / @Harvey : guidance welcome?

ermo removed g66925 as the assignee of this task.May 18 2023, 12:18 PM

I do not think it is related to qmi or mbim driver. QMI works properly.
Problem appears when ModemManager is trying to exchagning AT commands with module through serial ttyUSB.

Have you tried using screen to try sending AT commands to the modem manually? Similarly to this, https://unix.stackexchange.com/questions/89067/how-to-disable-pin-on-a-sim-card/313878#313878, how does it respond?

Could you also provide the exact usb modem you are using with lsusb

Also i'll note that I'm not sure anyone on the packaging team has hardware to test/update the ModemManager stack at the moment.

I can talk to device using picocom without any problems.

I will check lsusb later.

Does the modemmanager update help? modem-manager, version: 1.18.12, release: 19

ermo assigned this task to g66925.May 26 2023, 2:46 PM

ermo lowered the priority of this task from Normal to Needs More Info.

ModemManager gives up during initializing with AT commandsOpen, Needs More InfoPublicActions

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ModemManager gives up during initializing with AT commands
Open, Needs More InfoPublic
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