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When reporting bugs in the future please use apport by using 'ubuntu- bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. ** Changed in: gnome-settings-daemon (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1662836 Title: repeatedly turning BT off and off crashes gnome Status in gnome-settings-daemon package in Ubuntu: Incomplete Bug description: A bit of background (not sure if important): in our setup RFKill is driving a GPIO to enable / disable the BT transceiver. This is a slow operation and it could take ~500ms for the RFKill subsystem to complete the operation. In the Bluetooth configuration panel if I click on the Bluetooth on/off toggle switch 5+ times in a row repeatedly, gnome (or BT configuration panel) crashes. This is what I have in the journal: ``` gnome-settings-[886]: g_simple_async_result_take_error: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: g_simple_async_result_complete_in_idle: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: g_simple_async_result_take_error: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: g_simple_async_result_complete_in_idle: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: g_simple_async_result_take_error: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: g_simple_async_result_complete_in_idle: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed kernel: BT_RADIO going: on kernel: BCM_BT: going ON gnome-settings-[886]: g_simple_async_result_take_error: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: g_simple_async_result_complete_in_idle: assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed gnome-settings-[886]: Failed to set RFKill: Stream has outstanding operation gnome-settings-daemon.desktop[886]: ** gnome-settings-daemon.desktop[886]: rfkill-plugin:ERROR:rfkill-glib.c:168:write_change_all_timeout_cb: assertion failed: (rfkill->priv->event) ``` Coredump: ``` Core was generated by `/usr/lib/gnome-settings-daemon/gnome-settings-daemon'. Program terminated with signal SIGABRT, Aborted. #0 __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44 44 ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S: No such file or directory. (gdb) bt #0 __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44 #1 0xf687bee6 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 #2 0xf687cbee in __GI_abort () at abort.c:89 #3 0xf69bc7ea in g_assertion_message () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0 #4 0xf69bc888 in g_assertion_message_expr () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0 #5 0xf285d562 in write_change_all_timeout_cb (rfkill=0x643430, rfkill@entry=0x4b3f70) at rfkill-glib.c:168 #6 0xf285dc68 in cc_rfkill_glib_send_change_all_event (rfkill=0x4b3f70, rfkill_type=2, enable=0, cancellable=0xf285e0b8, callback=0xf285c709 <rfkill_set_cb>, user_data=0x492b90) at rfkill-glib.c:242 #7 0xf285cf78 in engine_set_bluetooth_airplane_mode (enable=<optimized out>, manager=0x492b90) at gsd-rfkill-manager.c:345 #8 handle_set_property (connection=<optimized out>, sender=<optimized out>, object_path=<optimized out>, interface_name=<optimized out>, property_name=0xf490f528 "BluetoothAirplaneMode", value=0xf4919460, error=0xffc75dac, user_data=0x492b90) at gsd-rfkill-manager.c:395 #9 0xf6b162ea in ?? () from /lib/arm-linux-gnueabihf/libgio-2.0.so.0 ``` At least for `assertion 'G_IS_SIMPLE_ASYNC_RESULT (simple)' failed` what I think it's happening here is that `cc_rfkill_glib_send_change_all_event()` is rapidly called and several request for the asynchronous writing are queued on several `GSimpleAsyncResult` objects. When the first writing is done in `write_change_all_done_cb()` the latest `rfkill->priv->simple` object is freed. All the subsequent `write_change_all_done_cb()` callbacks find a NULL `rfkill->priv->simple`. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1662836/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
