Re: [MM] 'qmi-support' branch merged to git master

[Aleksander Morgado <aleksander lanedo com>]

Hey Bjørn,

> 
>>> ModemManager[25642]: KEY: 04:00:05:01:00:00:00:00
>>> ModemManager[25642]:   Service: 01
>>> ModemManager[25642]:   Client ID: 05
>>> ModemManager[25642]:   Transaction ID: 04:00
>>>
>>> (ModemManager:25642): GLib-GIO-CRITICAL **: g_simple_async_result_take_error: assertion `error != NULL' failed
>>> Segmentation fault
>>
>> Oh; interesting... can you get me a backtrace?
> 
>>>>>>>   translated = FAILURE: NoEffect
> 
> 
> Sure:
> 
> 
> ModemManager[28552]: [/dev/cdc-wdm0] Received message...
>>>>>>> QMUX:
>>>>>>>   length  = 19
>>>>>>>   flags   = 0x80
>>>>>>>   service = "wds"
>>>>>>>   client  = 1
>>>>>>> QMI:
>>>>>>>   flags       = "response"
>>>>>>>   transaction = 4
>>>>>>>   tlv_length  = 7
>>>>>>>   message     = "Start Network" (0x0020)
>>>>>>> TLV:
>>>>>>>   type       = "Result" (0x02)
>>>>>>>   length     = 4
>>>>>>>   value      = 01:00:1A:00
> ModemManager[28552]: KEY: 04:00:01:01:00:00:00:00
> ModemManager[28552]:   Service: 01
> ModemManager[28552]:   Client ID: 01
> ModemManager[28552]:   Transaction ID: 04:00
> 
> (ModemManager:28552): GLib-GIO-CRITICAL **: g_simple_async_result_take_error: assertion `error != NULL' failed
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x000000000044613b in connect_finish (self=<optimized out>, res=<optimized out>, data=0x7fffffffe118, ipv4_config=0x7fffffffe120, ipv6_config=0x7fffffffe128, error=0x7fffffffe110)
>     at mm-bearer-qmi.c:140
> 140         *data = MM_PORT (g_object_ref (result->data));
> (gdb) bt
> #0  0x000000000044613b in connect_finish (self=<optimized out>, res=<optimized out>, data=0x7fffffffe118, ipv4_config=0x7fffffffe120, ipv6_config=0x7fffffffe128, error=0x7fffffffe110)
>     at mm-bearer-qmi.c:140
> #1  0x00000000004411d6 in connect_ready (self=0x7da3c0, res=<optimized out>, simple=0x7c5990) at mm-bearer.c:183
> #2  0x00007ffff72763f7 in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
> #3  0x00007ffff72764f9 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
> #4  0x00007ffff6d09205 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #5  0x00007ffff6d09538 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #6  0x00007ffff6d09932 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #7  0x00000000004376f7 in main (argc=<optimized out>, argv=<optimized out>) at main.c:150
> 
> 

When we get a 'No-Effect' error as response to Start Network, I was
assuming that it means that the connection was already on and we
succeeded. But; we won't get a packet data handle which we can
afterwards use in Stop Network... (that's the root cause of the segfault).

Maybe we need to retry when we get a No-Effect error? or maybe
autoconnect was on and we're then entitled to use a global handle in
Stop Network?

-- 
Aleksander