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cf79615169
When NM quits it destroys all singletons including NMOvsdb, which invokes callbacks for every pending method call. In the shutdown, extra care must be taken to not access objects that are already in a inconsistent state; for example here, the callback changes the device state, and this causes an access to data that has already been cleared: #0 _g_log_abort (breakpoint=breakpoint@entry=1) at gmessages.c:554 #1 g_logv (log_domain=0x5635653b6817 "NetworkManager", log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>, args=args@entry=0x7fffb4b2c1e0) at gmessages.c:1362 #2 g_log (log_domain=log_domain@entry=0x5635653b6817 "NetworkManager", log_level=log_level@entry=G_LOG_LEVEL_CRITICAL, format=format@entry=0x7fbb3f58fa4a "%s: assertion '%s' failed") at gmessages.c:1403 #3 g_return_if_fail_warning (log_domain=log_domain@entry=0x5635653b6817 "NetworkManager", pretty_function=pretty_function@entry=0x5635653b6b00 <__func__.34463> "nm_device_factory_manager_find_factory_for_connection", expression=expression@entry=0x5635653b6719 "factories_by_setting") at gmessages.c:2702 #4 nm_device_factory_manager_find_factory_for_connection (connection=connection@entry=0x56356627e0e0) at src/devices/nm-device-factory.c:243 #5 nm_manager_get_connection_iface (self=0x563566241080 [NMManager], connection=connection@entry=0x56356627e0e0, out_parent=out_parent@entry=0x0, error=error@entry=0x0) at src/nm-manager.c:1458 #6 check_connection_compatible (self=<optimized out>, connection=0x56356627e0e0) at src/devices/nm-device.c:4679 #7 check_connection_compatible (device=0x56356647b1b0 [NMDeviceOvsInterface], connection=0x56356627e0e0) at src/devices/ovs/nm-device-ovs-interface.c:95 #8 _nm_device_check_connection_available (self=0x56356647b1b0 [NMDeviceOvsInterface], connection=0x56356627e0e0, flags=NM_DEVICE_CHECK_CON_AVAILABLE_NONE, specific_object=0x0) at src/devices/nm-device.c:12102 #9 nm_device_check_connection_available (self=self@entry=0x56356647b1b0 [NMDeviceOvsInterface], connection=0x56356627e0e0, flags=flags@entry=NM_DEVICE_CHECK_CON_AVAILABLE_NONE, specific_object=specific_object@entry=0x0) at src/devices/nm-device.c:12131 #10 nm_device_recheck_available_connections (self=self@entry=0x56356647b1b0 [NMDeviceOvsInterface]) at src/devices/nm-device.c:12238 #11 _set_state_full (self=self@entry=0x56356647b1b0 [NMDeviceOvsInterface], state=state@entry=NM_DEVICE_STATE_FAILED, reason=reason@entry=NM_DEVICE_STATE_REASON_OVSDB_FAILED, quitting=quitting@entry=0) at src/devices/nm-device.c:13065 #12 nm_device_state_changed (self=self@entry=0x56356647b1b0 [NMDeviceOvsInterface], state=state@entry=NM_DEVICE_STATE_FAILED, reason=reason@entry=NM_DEVICE_STATE_REASON_OVSDB_FAILED) at src/devices/nm-device.c:13328 #13 del_iface_cb (error=<optimized out>, user_data=0x56356647b1b0) at src/devices/ovs/nm-device-ovs-port.c:160 #14 _transact_cb (self=self@entry=0x5635662b9ba0 [NMOvsdb], result=result@entry=0x0, error=0x563566259a10, user_data=user_data@entry=0x5635662ff320) at src/devices/ovs/nm-ovsdb.c:1449 #15 ovsdb_disconnect (self=self@entry=0x5635662b9ba0 [NMOvsdb]) at src/devices/ovs/nm-ovsdb.c:1331 #16 dispose (object=0x5635662b9ba0 [NMOvsdb]) at src/devices/ovs/nm-ovsdb.c:1558 #17 g_object_unref (_object=0x5635662b9ba0) at gobject.c:3293 #18 _nm_singleton_instance_destroy () at src/nm-core-utils.c:138 #19 _dl_fini () at dl-fini.c:253 #20 __run_exit_handlers (status=status@entry=0, listp=0x7fbb3e1ad6c8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:77 #21 __GI_exit (status=status@entry=0) at exit.c:99 #22 main (argc=1, argv=0x7fffb4b2cc38) at src/main.c:468 Add a new error code to indicate to callbacks that we are quitting and no further action must be taken. This is preferable to having additional references because it allows us to free the resources owned by callbacks immediately, while references can easily create loops. https://bugzilla.redhat.com/show_bug.cgi?id=1543871 |
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| .. | ||
| meson.build | ||
| nm-device-ovs-bridge.c | ||
| nm-device-ovs-bridge.h | ||
| nm-device-ovs-interface.c | ||
| nm-device-ovs-interface.h | ||
| nm-device-ovs-port.c | ||
| nm-device-ovs-port.h | ||
| nm-ovs-factory.c | ||
| nm-ovsdb.c | ||
| nm-ovsdb.h | ||