Hello, With different versions of ModemManager (1.6.12, 1.6.4, 1.4.2), we have seen (rarely) segfault crashes in g_hash_table_iter_next called by mm_base_modem_find_ports because the hash table corresponding to ports is NULL. When the crash occurs, in mm_base_modem_find_ports (mm-base-modem.c), "self->priv->ports" and "self->priv->authp" are NULL. It seems that they can be NULL only if dispose was called before but the reference count of the object is not equal to 0 (7 for example). Maybe because g_object_run_dispose was called. Unfortunately, we do not have a method to reproduce these crashes even if it seems to occur at modem unplug (huawei models - broadband). Is it a known problem?
ModemManager 1.6.12 simplified stacktrace: g_hash_table_iter_next (ghash.c) mm_base_modem_find_ports (mm-base-modem.c) get_at_port_list (mm-broadband-modem-huawei.c) set_voice_unsolicited_events_handlers (mm-broadband-modem-huawei.c) parent_voice_setup_unsolicited_events_ready (mm-broadband-modem-huawei.c) g_simple_async_result_complete (gsimpleasyncresult.c) ... ModemManager 1.6.4 simplified stacktrace : g_hash_table_iter_next mm_base_modem_find_ports get_at_port_list (mm-broadband-modem-huawei.c) enable_disable_unsolicited_rfswitch_event_handler (mm-broadband-modem-huawei.c) huawei_rfswitch_check_ready (mm-broadband-modem-huawei.c) g_simple_async_result_complete (gsimpleasyncresult.c) ... ModemManager 1.4.2 simplified stacktrace : g_hash_table_iter_next (ghash.c) mm_base_modem_find_ports (mm-base-modem.c) get_at_port_list (mm-broadband-modem-huawei.c) set_ignored_unsolicited_events_handlers (mm-broadband-modem-huawei.c) setup_ports (mm-broadband-modem-huawei.c) initialize_step (mm-broadband-modem.c) restart_initialize_idle (mm-iface-modem.c) g_main_dispatch (gmain.c) ... Thanks, Sebastien Fabre Embedded Software Engineer [http://www.sigfox.com/static/media/signature_sigfox_logo_nov16.png]<http://www.sigfox.com> Bâtiment E-volution - 425, rue Jean Rostand 31670 Labège, France sebastien.fa...@sigfox.com<mailto:sebastien.fa...@sigfox.com> sigfox.com<http://www.sigfox.com> [http://www.sigfox.com/static/media/T.png] <https://twitter.com/sigfox> [http://www.sigfox.com/static/media/F.png] <http://www.facebook.com/sigfox> [http://www.sigfox.com/static/media/L.png] <http://www.linkedin.com/company/2731408> [http://www.sigfox.com/static/media/Y.png] <https://www.youtube.com/sigfox>
_______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
