On 10/25/2017 02:38 PM, Eswaran Vinothkumar (BEG/PJ-IOT-EL) wrote:
Hello,
For our next connectivity project we are planning to use Connman along
with oFono
The version being used are Connman :1.35 and oFono:1.21
After system start up, I am seeing that the oFono process gets exited,
whenever I try to enable the modem by calling the python script
enable-modem in the test directory. However, if I restart the ofono
systemd service, everything works fine.
A couple of comments here:
i) You have connman and ofono running via systemd and you're calling
enable-modem from the test directory... I don't think this is a robust
way to go about testing things. Try to simplify by stopping connman and
ofono and running ofono manually from the command line before calling
the test script.
# systemctl stop connman
# systemctl stop ofono
# ofonod -d -n
# ...../enable-modem
ii) When you say "everything works fine", what do you mean? The test
script can run...?
iii) There _is_ a race in the gobi module at just the spot that you are
seeing the crash. I have seen it many times but haven't taken the time
to isolate the issue... if I get a moment today, I might take a look at
it. I can trigger it by calling enable-modem too early in the ofono's
startup process... it occurs maybe 1 time in 5 on my setup.
iv) Like Christophe said, disable ofono's signal handler and enable
core dumps before running ofono. The core dump is easier to analyze
than ofono's backtrace.
/Jonas
I have attached the logs for your reference. Please let me know, if
any further log messages are required.
Modem chip. MC7455 from sierra
Linux kernel: 4.9.44-fslc+g8f876e1 (freescale)
Mit freundlichen Grüßen / Best regards
Vinothkumar Eswaran
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