<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - infinite loop when lid events are repeated - list item points to itself" href="https://bugs.freedesktop.org/show_bug.cgi?id=103298#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - infinite loop when lid events are repeated - list item points to itself" href="https://bugs.freedesktop.org/show_bug.cgi?id=103298">bug 103298</a> from <a class="email" href="mailto:prahal@yahoo.com" title="Alban Browaeys <prahal@yahoo.com>"> Alban Browaeys</a> <pre>Created <a href="attachment.cgi?id=135092" name="attach_135092" title="debug: trigger a core dump on list corruption">attachment 135092</a> <a href="attachment.cgi?id=135092&action=edit" title="debug: trigger a core dump on list corruption">[details]</a> <a href='page.cgi?id=splinter.html&bug=103298&attachment=135092'>[review]</a> debug: trigger a core dump on list corruption I send this hack to get a coredump / backtrace instead of busy loop to help other debug this issue. I will investigate anew as time passed and I somehow lost track of the in and outs of this fix. The core of the debug with this debug patch I get these journald entries and the adhoc coredumpctl backtrace. Note that 0x5647705b6c20 is added 0x564770541940 twice in a raw. sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device init event listener - 0x564770541940 which has prev (nil) and next (nil) sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - to 0x564770545110 sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - 0x5647705a72e0 which has prev (nil) and next (nil) sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device POST add event listener - 0x5647705a72e0 which has prev 0x564770545110 and next 0x564770545110 sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - to 0x5647705b6c20 sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - 0x5647705a71a8 which has prev (nil) and next (nil) sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device POST add event listener - 0x5647705a71a8 which has prev 0x5647705b6c20 and next 0x5647705b6c20 sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - to 0x56477059c930 sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - 0x5647705a70f8 which has prev (nil) and next (nil) sept. 27 02:32:55 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device POST add event listener - 0x5647705a70f8 which has prev 0x56477059c930 and next 0x56477059c930 sept. 27 02:33:14 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - to 0x5647705b6c20 sept. 27 02:33:14 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - 0x564770541940 which has prev 0x564770541940 and next 0x564770541940 sept. 27 02:33:14 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device POST add event listener - 0x564770541940 which has prev 0x5647705b6c20 and next 0x5647705a71a8 sept. 27 02:33:18 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - to 0x5647705b6c20 sept. 27 02:33:18 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device PRE add event listener - 0x564770541940 which has prev 0x5647705b6c20 and next 0x5647705a71a8 sept. 27 02:33:18 cyclope org.gnome.Shell.desktop[14480]: LIBINPUT : device POST add event listener - 0x564770541940 which has prev 0x564770541940 and next 0x564770541940 PID: 14799 (gnome-shell) UID: 1000 (prahal) GID: 1000 (prahal) Signal: 6 (ABRT) Timestamp: Wed 2017-09-27 02:33:18 CEST (1min 1s ago) Command Line: /usr/bin/gnome-shell Executable: /usr/bin/gnome-shell Control Group: /user.slice/user-1000.slice/session-396.scope Unit: session-396.scope Slice: user-1000.slice Session: 396 Owner UID: 1000 (prahal) Boot ID: c29df59057834e2bb77ae569ae135cfb Machine ID: 2b483dcbcecb6729df407c5b5382b0d1 Hostname: cyclope Storage: /var/lib/systemd/coredump/core.gnome-shell.1000.c29df59057834e2bb77ae569ae135cfb.14799.1506472398000000.lz4 Message: Process 14799 (gnome-shell) of user 1000 dumped core. Stack trace of thread 14799: #0 0x00007fd6b1220fff __GI_raise (libc.so.6) #1 0x00007fd6b122242a __GI_abort (libc.so.6) #2 0x00007fd6a859cea4 create_dump (libinput.so.10) #3 0x00007fd6a85a626b lid_switch_process_switch (libinput.so.10) #4 0x00007fd6a85a10a9 evdev_process_event (libinput.so.10) #5 0x00007fd6a859cd2f libinput_dispatch (libinput.so.10) #6 0x00007fd6b22feeac dispatch_libinput (libmutter-clutter-1.0.so) #7 0x00007fd6b17f2f67 g_main_dispatch (libglib-2.0.so.0) #8 0x00007fd6b17f31a0 g_main_context_iterate (libglib-2.0.so.0) #9 0x00007fd6b17f34b2 g_main_loop_run (libglib-2.0.so.0) #10 0x00007fd6b2fa6a8c meta_run (libmutter.so.0) #11 0x000056476f0224b7 main (gnome-shell) #12 0x00007fd6b120e2e1 __libc_start_main (libc.so.6) #13 0x000056476f0225fa _start (gnome-shell) Thread 1 (Thread 0x7fd6b47a9a80 (LWP 14799)): #0 0x00007fd6b1220fff in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007fd6b122242a in __GI_abort () at abort.c:89 #2 0x00007fd6a859cea4 in create_dump () at libinput.c:2013 #3 0x00007fd6a859cea4 in libinput_device_add_event_listener (device=<optimized out>, listener=0x564770541940, notify_func=<optimized out>, notify_func_data=<optimized out>) at libinput.c:2047 #4 0x00007fd6a85a626b in lid_switch_process_switch (e=<optimized out>, e=<optimized out>, time=105062899623, device=0x5647705450f0, dispatch=0x5647705418f0) at evdev-lid.c:135 #5 0x00007fd6a85a626b in lid_switch_process (evdev_dispatch=0x5647705418f0, device=0x5647705450f0, event=<optimized out>, time=105062899623) at evdev-lid.c:155 #6 0x00007fd6a85a10a9 in evdev_process_event (e=0x7ffd18541870, device=0x5647705450f0) at evdev.c:1904 #7 0x00007fd6a85a10a9 in evdev_device_dispatch_one (ev=0x7ffd18541870, device=0x5647705450f0) at evdev.c:1912 #8 0x00007fd6a85a10a9 in evdev_device_dispatch (data=0x5647705450f0) at evdev.c:1971 #9 0x00007fd6a859cd2f in libinput_dispatch (libinput=0x56477052bdf0) at libinput.c:1998 #10 0x00007fd6b22feeac in dispatch_libinput (manager_evdev=0x56477052a8c0 [ClutterDeviceManagerEvdev]) at evdev/clutter-device-manager-evdev.c:788 #11 0x00007fd6b22feeac in clutter_event_dispatch (g_source=g_source@entry=0x5647705d7de0, callback=<optimized out>, user_data=<optimized out>) at evdev/clutter-device-manager-evdev.c:810 #12 0x00007fd6b17f2f67 in g_main_dispatch (context=0x56477035bc00) at ../../../../glib/gmain.c:3148 #13 0x00007fd6b17f2f67 in g_main_context_dispatch (context=context@entry=0x56477035bc00) at ../../../../glib/gmain.c:3813 #14 0x00007fd6b17f31a0 in g_main_context_iterate (context=0x56477035bc00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3886 #15 0x00007fd6b17f34b2 in g_main_loop_run (loop=0x5647706054b0) at ../../../../glib/gmain.c:4082 #16 0x00007fd6b2fa6a8c in meta_run () at core/main.c:572 #17 0x000056476f0224b7 in main (argc=<optimized out>, argv=<optimized out>) at main.c:471</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>