SUMMARY I've used a Fedora 34 KDE Plasma installation. Starting with Plasma 5.21.5 on Wayland, DiscoverNotifier occasionally crashed with SIGTRAP in g_log_structured_array in glib 2.68.2 about 30 s to 1 minute after login. Frame 1 of the crashing thread 1 had the error message "inotify read(): Bad file descriptor" Core was generated by `/usr/libexec/DiscoverNotifier'. Program terminated with signal SIGTRAP, Trace/breakpoint trap. #0 g_log_structured_array (log_level=<optimized out>, fields=0x7fb94bffd7e0, n_fields=4) at ../glib/gmessages.c:556 556 G_BREAKPOINT (); [Current thread is 1 (Thread 0x7fb94bfff640 (LWP 6231))] (gdb) bt full #0 g_log_structured_array (log_level=<optimized out>, fields=0x7fb94bffd7e0, n_fields=4) at ../glib/gmessages.c:556 __func__ = "g_log_structured_array" #1 0x00007fb96a4b5249 in g_log_default_handler (log_domain=log_domain@entry=0x7fb9585976c4 "GLib-GIO", log_level=log_level@entry=6, message=message@entry=0x7fb9440014a0 "inotify read(): Bad file descriptor", unused_data=unused_data@entry=0x0) at ../glib/gmessages.c:3236 fields = {{key = 0x7fb96a5102e7 "GLIB_OLD_LOG_API", value = 0x7fb96a50e340, length = -1}, {key = 0x7fb96a510228 "MESSAGE", value = 0x7fb9440014a0, length = -1}, {key = 0x7fb96a51023b "PRIORITY", value = 0x7fb96a50a71d, length = -1}, {key = 0x7fb96a510295 "GLIB_DOMAIN", value = 0x7fb9585976c4, length = -1}} n_fields = <optimized out> #2 0x00007fb96a4b661a in g_logv (log_domain=0x7fb9585976c4 "GLib-GIO", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=<optimized out>) at ../glib/gmessages.c:1382 domain = 0x0 data = 0x0 depth = <optimized out> log_func = 0x7fb96a4b5190 <g_log_default_handler> domain_fatal_mask = <optimized out> masquerade_fatal = 0 test_level = 6 was_fatal = <optimized out> was_recursion = <optimized out> --Type <RET> for more, q to quit, c to continue without paging--c msg = 0x7fb9440014a0 "inotify read(): Bad file descriptor" msg_alloc = 0x7fb9440014a0 "inotify read(): Bad file descriptor" i = 2 #3 0x00007fb96a4b6903 in g_log (log_domain=log_domain@entry=0x7fb9585976c4 "GLib-GIO", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7fb9585cbd91 "inotify read(): %s") at ../glib/gmessages.c:1451 args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fb94bffda10, reg_save_area = 0x7fb94bffd950}} #4 0x00007fb95858c5b7 in ik_source_read_some_events (iks=iks@entry=0x5566818859b0, buffer=buffer@entry=0x7fb94bffda80 "", buffer_len=buffer_len@entry=4096) at ../gio/inotify/inotify-kernel.c:160 result = <optimized out> errsv = <optimized out> #5 0x00007fb95858c71b in ik_source_read_all_the_events (buffer_len=4096, length_out=<synthetic pointer>, buffer=0x7fb94bffda80 "", iks=0x5566818859b0) at ../gio/inotify/inotify-kernel.c:169 n_read = <optimized out> stack_buffer = '\000' <repeats 3512 times>... buffer_len = <optimized out> offset = <optimized out> iks = 0x5566818859b0 user_callback = 0x7fb95858da60 <ip_event_callback> interesting = 0 now = 2076854595 __func__ = "ik_source_dispatch" #6 ik_source_dispatch (source=0x5566818859b0, func=0x7fb95858da60 <ip_event_callback>, user_data=<optimized out>) at ../gio/inotify/inotify-kernel.c:253 stack_buffer = '\000' <repeats 3512 times>... buffer_len = <optimized out> offset = <optimized out> iks = 0x5566818859b0 user_callback = 0x7fb95858da60 <ip_event_callback> interesting = 0 now = 2076854595 __func__ = "ik_source_dispatch" #7 0x00007fb96a4ae4cf in g_main_dispatch (context=0x55668185dc70) at ../glib/gmain.c:3337 dispatch = 0x7fb95858c6a0 <ik_source_dispatch> prev_source = 0x0 begin_time_nsec = 2076854591611 was_in_call = <optimized out> user_data = 0x0 callback = 0x7fb95858da60 <ip_event_callback> cb_funcs = 0x7fb96a5913a0 <g_source_callback_funcs> cb_data = 0x556681877780 need_destroy = <optimized out> source = 0x5566818859b0 current = 0x7fb944000c10 i = 0 #8 g_main_context_dispatch (context=0x55668185dc70) at ../glib/gmain.c:4055 #9 0x00007fb96a5024e8 in g_main_context_iterate.constprop.0 (context=context@entry=0x55668185dc70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4131 max_priority = 2147483647 timeout = -1 some_ready = 1 nfds = 2 allocated_nfds = 2 fds = <optimized out> begin_time_nsec = 2040086645207 #10 0x00007fb96a4abc03 in g_main_context_iteration (context=0x55668185dc70, may_block=may_block@entry=1) at ../glib/gmain.c:4196 retval = <optimized out> #11 0x00007fb96a4abc51 in glib_worker_main (data=<optimized out>) at ../glib/gmain.c:6089 #12 0x00007fb96a4dcc32 in g_thread_proxy (data=0x7fb94c002240) at ../glib/gthread.c:826 thread = 0x7fb94c002240 __func__ = "g_thread_proxy" #13 0x00007fb96b35a299 in start_thread (arg=0x7fb94bfff640) at pthread_create.c:481 ret = <optimized out> pd = 0x7fb94bfff640 unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140433820743232, 567970113673858133, 140733155832990, 140733155832991, 0, 140433820743232, -535011152567890859, -535079926198334379}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #14 0x00007fb96b829353 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 The journal at the time of the crash included an DiscoverNotifier error with a failed asserlation related to flatpak "DiscoverNotifier[5478]: Bail out! flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end)" May 21 22:44:33 PackageKit[2909]: get-updates transaction /12695_bdbdaeee from uid 1000 finished with success after 131ms May 21 22:44:34 DiscoverNotifier[5478]: ** May 21 22:44:34 DiscoverNotifier[5478]: flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) May 21 22:44:34 DiscoverNotifier[5478]: Bail out! flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) May 21 22:44:34 DiscoverNotifie[5478]: g_atomic_ref_count_dec: assertion 'g_atomic_int_get (arc) > 0' failed May 21 22:44:35 DiscoverNotifier[5478]: KCrash: Attempting to start /usr/libexec/DiscoverNotifier May 21 22:44:35 DiscoverNotifier[5478]: KCrash: Application 'DiscoverNotifier' crashing... May 21 22:44:35 DiscoverNotifier[5478]: KCrash: Attempting to start /usr/libexec/drkonqi May 21 22:44:35 DiscoverNotifier[5478]: QSocketNotifier: Invalid socket 6 and type 'Read', disabling... May 21 22:44:35 DiscoverNotifier[5478]: QSocketNotifier: Invalid socket 7 and type 'Read', disabling... May 21 22:44:35 DiscoverNotifier[5478]: QSocketNotifier: Invalid socket 9 and type 'Read', disabling... May 21 22:44:38 systemd[1]: systemd-hostnamed.service: Deactivated successfully. May 21 22:44:38 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' May 21 22:44:38 audit: BPF prog-id=55 op=UNLOAD May 21 22:44:38 audit: BPF prog-id=54 op=UNLOAD May 21 22:44:39 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:44:39 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:44:45 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:44:45 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:44:55 PackageKit[2909]: get-updates transaction /12696_adeacbcd from uid 1000 finished with success after 128ms May 21 22:44:56 DiscoverNotifie[6271]: g_atomic_ref_count_dec: assertion 'g_atomic_int_get (arc) > 0' failed May 21 22:44:56 DiscoverNotifie[6271]: g_atomic_ref_count_dec: assertion 'g_atomic_int_get (arc) > 0' failed May 21 22:45:00 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:45:00 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:45:00 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:45:00 rtkit-daemon[1889]: Supervising 7 threads of 4 processes of 1 users. May 21 22:45:00 rtkit-daemon[1889]: Successfully made thread 6420 of process 6102 (/home/matt/programs/firefox/firefox-bin) owned by '1000' RT at priority 10. May 21 22:45:00 rtkit-daemon[1889]: Supervising 8 threads of 5 processes of 1 users. May 21 22:45:05 plasmashell[5254]: trying to show an empty dialog May 21 22:45:10 kernel: show_signal: 56 callbacks suppressed May 21 22:45:10 kernel: traps: gmain[6231] trap int3 ip:7fb96a4b4f7f sp:7fb94bffd790 error:0 in libglib-2.0.so.0.6800.2[7fb96a476000+90000] May 21 22:45:10 audit[5478]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=6 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=5478 comm="gmain" exe="/usr/libexec/DiscoverNotifier" sig=5 res=1 May 21 22:45:10 DiscoverNotifier[5478]: QSocketNotifier: Invalid socket 8 and type 'Read', disabling... May 21 22:45:10 DiscoverNotifier[5478]: (process:5478): GLib-GIO-ERROR **: 22:45:10.219: inotify read(): Bad file descriptor May 21 22:45:10 systemd[1]: Created slice system-systemd\x2dcoredump.slice. May 21 22:45:10 audit: BPF prog-id=60 op=LOAD May 21 22:45:10 audit: BPF prog-id=61 op=LOAD May 21 22:45:10 audit: BPF prog-id=62 op=LOAD May 21 22:45:10 systemd[1]: Started Process Core Dump (PID 6459/UID 0). May 21 22:45:10 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-6459-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' May 21 22:45:11 systemd-coredump[6461]: Process 5478 (DiscoverNotifie) of user 1000 dumped core. Stack trace of thread 6231: #0 0x00007fb96a4b4f7f g_log_structured_array (libglib-2.0.so.0 + 0x5bf7f) #1 0x00007fb96a4b5249 g_log_default_handler (libglib-2.0.so.0 + 0x5c249) #2 0x00007fb96a4b661a g_logv (libglib-2.0.so.0 + 0x5d61a) #3 0x00007fb96a4b6903 g_log (libglib-2.0.so.0 + 0x5d903) #4 0x00007fb95858c5b7 ik_source_read_some_events (libgio-2.0.so.0 + 0x13b5b7) #5 0x00007fb95858c71b ik_source_dispatch (libgio-2.0.so.0 + 0x13b71b) #6 0x00007fb96a4ae4cf g_main_context_dispatch (libglib-2.0.so.0 + 0x554cf) #7 0x00007fb96a5024e8 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xa94e8) #8 0x00007fb96a4abc03 g_main_context_iteration (libglib-2.0.so.0 + 0x52c03) #9 0x00007fb96a4abc51 glib_worker_main (libglib-2.0.so.0 + 0x52c51) #10 0x00007fb96a4dcc32 g_thread_proxy (libglib-2.0.so.0 + 0x83c32) #11 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #12 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 5478: #0 0x00007fb96b81aa8b __GI___close (libc.so.6 + 0xf1a8b) #1 0x00007fb96d19dc42 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x4c42) #2 0x00007fb96b766320 __restore_rt (libc.so.6 + 0x3d320) #3 0x00007fb96b7662a2 __GI_raise (libc.so.6 + 0x3d2a2) #4 0x00007fb96b766320 __restore_rt (libc.so.6 + 0x3d320) #5 0x00007fb96b7662a2 __GI_raise (libc.so.6 + 0x3d2a2) #6 0x00007fb958404c2f g_closure_invoke (libgobject-2.0.so.0 + 0x13c2f) #7 0x00007fb958420894 signal_emit_unlocked_R (libgobject-2.0.so.0 + 0x2f894) #8 0x00007fb95842276a g_signal_emit_valist (libgobject-2.0.so.0 + 0x3176a) #9 0x00007fb958422983 g_signal_emit (libgobject-2.0.so.0 + 0x31983) #10 0x00007fb95854e4a6 emit_closed_in_idle (libgio-2.0.so.0 + 0xfd4a6) #11 0x00007fb96a4aa74b g_idle_dispatch (libglib-2.0.so.0 + 0x5174b) #12 0x00007fb96a4ae4cf g_main_context_dispatch (libglib-2.0.so.0 + 0x554cf) #13 0x00007fb96a5024e8 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xa94e8) #14 0x00007fb96a4abc03 g_main_context_iteration (libglib-2.0.so.0 + 0x52c03) #15 0x00007fb96bde46f8 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2cb6f8) #16 0x00007fb96bd969b2 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x27d9b2) #17 0x00007fb96bd9e544 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x285544) #18 0x000055667fec8f9c main (DiscoverNotifier + 0x8f9c) #19 0x00007fb96b750b75 __libc_start_main (libc.so.6 + 0x27b75) #20 0x000055667fec90ee _start (DiscoverNotifier + 0x90ee) Stack trace of thread 6234: #0 0x00007fb96b366a8a __futex_abstimed_wait_common64 (libpthread.so.0 + 0x15a8a) #1 0x00007fb96b3605c4 __pthread_cond_wait_common (libpthread.so.0 + 0xf5c4) #2 0x00007fb96bc050fa _ZN21QWaitConditionPrivate13wait_relativeE14QDeadlineTimer (libQt5Core.so.5 + 0xec0fa) #3 0x00007fb96bc02904 _ZN17QThreadPoolThread3runEv (libQt5Core.so.5 + 0xe9904) #4 0x00007fb96bbff751 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe6751) #5 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #6 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 6235: #0 0x00007fb96b81e5bf __GI___poll (libc.so.6 + 0xf55bf) #1 0x00007fb96a50247c g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xa947c) #2 0x00007fb96a4abc03 g_main_context_iteration (libglib-2.0.so.0 + 0x52c03) #3 0x00007fb949c983ed dconf_gdbus_worker_thread (libdconfsettings.so + 0x73ed) #4 0x00007fb96a4dcc32 g_thread_proxy (libglib-2.0.so.0 + 0x83c32) #5 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #6 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 6233: #0 0x00007fb96b81e5bf __GI___poll (libc.so.6 + 0xf55bf) #1 0x00007fb96d19d718 _ZN6KCrash12startProcessEiPPKcb.constprop.0 (libKF5Crash.so.5 + 0x4718) #2 0x00007fb96d19e069 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x5069) #3 0x00007fb96b766320 __restore_rt (libc.so.6 + 0x3d320) #4 0x00007fb96b7662a2 __GI_raise (libc.so.6 + 0x3d2a2) #5 0x00007fb96b74f8a4 __GI_abort (libc.so.6 + 0x268a4) #6 0x00007fb96a477ccc g_assertion_message (libglib-2.0.so.0 + 0x1eccc) #7 0x00007fb96a4d32ff g_assertion_message_expr (libglib-2.0.so.0 + 0x7a2ff) #8 0x00007fb9586d9a8c flatpak_summary_find_ref_map (libflatpak.so.0 + 0xb0a8c) #9 0x00007fb9586da6b4 flatpak_summary_lookup_ref (libflatpak.so.0 + 0xb16b4) #10 0x00007fb9586767c6 flatpak_remote_state_lookup_ref (libflatpak.so.0 + 0x4d7c6) #11 0x00007fb95867e5bf flatpak_dir_find_latest_rev (libflatpak.so.0 + 0x555bf) #12 0x00007fb9586cc706 resolve_all_ops (libflatpak.so.0 + 0xa3706) #13 0x00007fb9586ce320 flatpak_transaction_real_run (libflatpak.so.0 + 0xa5320) #14 0x00007fb9586a3929 flatpak_installation_list_installed_refs_for_update (libflatpak.so.0 + 0x7a929) #15 0x00007fb9587cdba0 _ZN12QtConcurrent15RunFunctionTaskIP10_GPtrArrayE3runEv (FlatpakNotifier.so + 0x4ba0) #16 0x00007fb96bc02740 _ZN17QThreadPoolThread3runEv (libQt5Core.so.5 + 0xe9740) #17 0x00007fb96bbff751 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe6751) #18 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #19 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 6232: #0 0x00007fb96b823e0d syscall (libc.so.6 + 0xfae0d) #1 0x00007fb96a4fc15c g_mutex_lock_slowpath (libglib-2.0.so.0 + 0xa315c) #2 0x00007fb96a4ac680 g_source_unref_internal (libglib-2.0.so.0 + 0x53680) #3 0x00007fb9585508be on_worker_closed (libgio-2.0.so.0 + 0xff8be) #4 0x00007fb958569fe7 _g_dbus_worker_do_read_cb (libgio-2.0.so.0 + 0x118fe7) #5 0x00007fb9584ffa7a g_task_return_now (libgio-2.0.so.0 + 0xaea7a) #6 0x00007fb9584ffc7b g_task_return (libgio-2.0.so.0 + 0xaec7b) #7 0x00007fb958568e2a _g_socket_read_with_control_messages_ready (libgio-2.0.so.0 + 0x117e2a) #8 0x00007fb9584e6bcb socket_source_dispatch (libgio-2.0.so.0 + 0x95bcb) #9 0x00007fb96a4ae4cf g_main_context_dispatch (libglib-2.0.so.0 + 0x554cf) #10 0x00007fb96a5024e8 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xa94e8) #11 0x00007fb96a4ada93 g_main_loop_run (libglib-2.0.so.0 + 0x54a93) #12 0x00007fb958561d5a gdbus_shared_thread_func (libgio-2.0.so.0 + 0x110d5a) #13 0x00007fb96a4dcc32 g_thread_proxy (libglib-2.0.so.0 + 0x83c32) #14 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #15 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 6230: #0 0x00007fb96b82aa2c __libc_send (libc.so.6 + 0x101a2c) #1 0x00007fb96cfe588b operator() (libQt5Network.so.5 + 0xe488b) #2 0x00007fb96cfd7844 _ZN24QNetworkInterfaceManager13allInterfacesEv (libQt5Network.so.5 + 0xd6844) #3 0x00007fb96cfd8515 _ZN17QNetworkInterface13allInterfacesEv (libQt5Network.so.5 + 0xd7515) #4 0x00007fb9505165df _ZN14QGenericEngine15doRequestUpdateEv (libqgenericbearer.so + 0x55df) #5 0x00007fb96bda578b _ZNK11QMetaMethod6invokeEP7QObjectN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS5_S5_S5_S5_S5_S5_S5_S5_S5_ (libQt5Core.so.5 + 0x28c78b) #6 0x00007fb96bda681c _ZN11QMetaObject12invokeMethodEP7QObjectPKcN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS7_S7_S7_S7_S7_S7_S7_S7_S7_ (libQt5Core.so.5 + 0x28d81c) #7 0x00007fb96cfc6f30 _ZN11QMetaObject12invokeMethodEP7QObjectPKc16QGenericArgumentS4_S4_S4_S4_S4_S4_S4_S4_S4_ (libQt5Network.so.5 + 0xc5f30) #8 0x00007fb96cfc7132 _ZN35QNetworkConfigurationManagerPrivate12startPollingEv (libQt5Network.so.5 + 0xc6132) #9 0x00007fb96cfc77d0 _ZN35QNetworkConfigurationManagerPrivate20updateConfigurationsEv (libQt5Network.so.5 + 0xc67d0) #10 0x00007fb96bdbf257 _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2a6257) #11 0x00007fb96bd97f2b doNotify (libQt5Core.so.5 + 0x27ef2b) #12 0x00007fb96bd9ac76 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5 + 0x281c76) #13 0x00007fb96bde4c57 postEventSourceDispatch (libQt5Core.so.5 + 0x2cbc57) #14 0x00007fb96a4ae4cf g_main_context_dispatch (libglib-2.0.so.0 + 0x554cf) #15 0x00007fb96a5024e8 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xa94e8) #16 0x00007fb96a4abc03 g_main_context_iteration (libglib-2.0.so.0 + 0x52c03) #17 0x00007fb96bde46f8 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2cb6f8) #18 0x00007fb96bd969b2 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x27d9b2) #19 0x00007fb96bbfe49a _ZN7QThread4execEv (libQt5Core.so.5 + 0xe549a) #20 0x00007fb96bbff751 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe6751) #21 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #22 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 6258: #0 0x00007fb96b823e0d syscall (libc.so.6 + 0xfae0d) #1 0x00007fb96a4fc84c g_cond_wait_until (libglib-2.0.so.0 + 0xa384c) #2 0x00007fb96a47e401 g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0x25401) #3 0x00007fb96a47e586 g_async_queue_timeout_pop (libglib-2.0.so.0 + 0x25586) #4 0x00007fb96a4dfbc9 g_thread_pool_thread_proxy.lto_priv.0 (libglib-2.0.so.0 + 0x86bc9) #5 0x00007fb96a4dcc32 g_thread_proxy (libglib-2.0.so.0 + 0x83c32) #6 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #7 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) Stack trace of thread 5496: #0 0x00007fb96b81e5bf __GI___poll (libc.so.6 + 0xf55bf) #1 0x00007fb96a50247c g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xa947c) #2 0x00007fb96a4abc03 g_main_context_iteration (libglib-2.0.so.0 + 0x52c03) #3 0x00007fb96bde476e _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2cb76e) #4 0x00007fb96bd969b2 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x27d9b2) #5 0x00007fb96bbfe49a _ZN7QThread4execEv (libQt5Core.so.5 + 0xe549a) #6 0x00007fb96c69df8b _ZN22QDBusConnectionManager3runEv (libQt5DBus.so.5 + 0x1cf8b) #7 0x00007fb96bbff751 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe6751) #8 0x00007fb96b35a299 start_thread (libpthread.so.0 + 0x9299) #9 0x00007fb96b829353 __clone (libc.so.6 + 0x100353) May 21 22:45:11 systemd[5090]: app-org.kde.discover.notifier@autostart.service: Main process exited, code=killed, status=5/TRAP May 21 22:45:11 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-6459-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' May 21 22:45:11 DiscoverNotifier[6460]: Unable to attach: program terminated with signal SIGTRAP, Trace/breakpoint trap. May 21 22:45:11 DiscoverNotifier[6460]: Exception ignored in: <gdb._GdbOutputFile object at 0x7ffabf617100> May 21 22:45:11 DiscoverNotifier[6460]: Traceback (most recent call last): May 21 22:45:11 DiscoverNotifier[6460]: File "/usr/share/gdb/python/gdb/__init__.py", line 43, in flush May 21 22:45:11 DiscoverNotifier[6460]: def flush(self): May 21 22:45:11 DiscoverNotifier[6460]: KeyboardInterrupt: May 21 22:45:11 systemd[1]: systemd-coredump@0-6459-0.service: Deactivated successfully. May 21 22:45:11 systemd[1]: systemd-coredump@0-6459-0.service: Consumed 1.043s CPU time. May 21 22:45:11 audit: BPF prog-id=62 op=UNLOAD May 21 22:45:11 audit: BPF prog-id=61 op=UNLOAD May 21 22:45:11 audit: BPF prog-id=60 op=UNLOAD May 21 22:45:11 systemd[5090]: app-org.kde.discover.notifier@autostart.service: Failed with result 'signal'. May 21 22:45:11 systemd[5090]: app-org.kde.discover.notifier@autostart.service: Consumed 5.464s CPU time. The journal has 9 DiscoverNotifier crashes of this type since 2021-5-21 using Plasma 5.19.5 to 5.22.2.1 which about 1% of logins. drkonqi sometimes started when these crashes happened, but drkonqi always crashed when I tried to generate the trace by clicking on the Advanced tab. STEPS TO REPRODUCE 1. Boot a Fedora 34 KDE Plasma installation updated with updates-testing enabled. 2. Log in to Plasma on Wayland 3. flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo 4. flatpak remote-add --if-not-exists kdeapps --from https://distribute.kde.org/kdeapps.flatpakrepo 5. flatpak install kstars 6. Log out of Plasma 7. Log in to Plasma 8. If the crash doesn't happen within a minute, repeat 6-7 until it does. OBSERVED RESULT DiscoverNotifier occasionally crashed with SIGTRAP in g_log_structured_array in glib after Plasma started EXPECTED RESULT No crashes would happen. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 34 (available in About System) KDE Plasma Version: 5.19.5 - 5.22.2 KDE Frameworks Version: 5.82.0 - 5.83.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION I have flathub and kdeapps flatpak repos installed and enabled with the following based on https://community.kde.org/Guidelines_and_HOWTOs/Flatpak flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo flatpak remote-add --if-not-exists kdeapps --from https://distribute.kde.org/kdeapps.flatpakrepo I installed the kstars flatpak with flatpak install kstars
I forgot to mention that I think the failed assertion flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) is the reason for the first crash of DiscoverNotifier. The following DiscoverNotifier crash with SIGTRAP in g_log_structured_array likely happened when I tried to generate the trace in drkonqi by clicking the Advanced tab or button which led to the drkonqi crash.
Can you reproduce? I don't think there's much we can do with this backtrace.
(In reply to Aleix Pol from comment #2) > Can you reproduce? I don't think there's much we can do with this backtrace. Aleix, I reproduced the DiscoverNotifier crash with the failed assertion in flatpak 9 times (about 1-2 times a week), but the last crash was 2021-6-30. Since the crashes only happened in 1-2% of Plasma sessions, it might take a while to see if the problem is still reproducible unless I were to log in to Plasma like 100 times when there's new flathub or kdeapps metadata. The failed assertion flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) might have meant there was some problem with the flatpak metadata for the flathub or kdeapps remotes. Thanks.
Have you seen it at all since then? Also would you be able to upgrade to 5.22.5 and see if it still happens ever with that version? Or even better, 5.23 (the beta, or the final release a week from now)? Some Flatpak fixes have been made recently.
(In reply to Nate Graham from comment #4) > Have you seen it at all since then? Also would you be able to upgrade to > 5.22.5 and see if it still happens ever with that version? Or even better, > 5.23 (the beta, or the final release a week from now)? Some Flatpak fixes > have been made recently. These crashes just happened with Plasma 5.22.5 after an offline update which included Discover 5.23.0 and KF 5.87.0 from the updates-testing repo in a Fedora 35 KDE Plasma installation. The failed flatpak assertion happened first flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) drkonqi appeared. I tried to get a trace in drkonqi, then DiscoverNotifer crashed with SIGTRAP. I've seen these crashes a few times since my last report, but they only happened about 1-2% of logins to Plasma. I have the fedora, flathub, kdeapps flatpak remotes enabled. The problem might be with one of those remotes or how their metadata are being processed. Here's the journal from the time of the latest crashes. Oct 07 12:12:43 DiscoverNotifier[1473]: ** Oct 07 12:12:43 DiscoverNotifier[1473]: flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) Oct 07 12:12:43 DiscoverNotifier[1473]: Bail out! flatpak:ERROR:common/flatpak-variant-impl-private.h:1197:var_summary_get_metadata: assertion failed: (start <= end) Oct 07 12:12:44 DiscoverNotifier[1473]: KCrash: Attempting to start /usr/libexec/DiscoverNotifier Oct 07 12:12:44 DiscoverNotifier[1473]: KCrash: Application 'DiscoverNotifier' crashing... Oct 07 12:12:44 DiscoverNotifier[1473]: KCrash: Attempting to start /usr/libexec/drkonqi Oct 07 12:12:44 DiscoverNotifier[1473]: QSocketNotifier: Invalid socket 8 and type 'Read', disabling... Oct 07 12:12:44 DiscoverNotifier[1473]: QSocketNotifier: Invalid socket 6 and type 'Read', disabling... Oct 07 12:12:44 DiscoverNotifier[1473]: QSocketNotifier: Invalid socket 7 and type 'Read', disabling... Oct 07 12:12:44 DiscoverNotifier[1473]: QSocketNotifier: Invalid socket 9 and type 'Read', disabling... Oct 07 12:12:45 systemd[1]: systemd-hostnamed.service: Deactivated successfully. Oct 07 12:12:45 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' Oct 07 12:12:45 audit: BPF prog-id=45 op=UNLOAD Oct 07 12:12:45 audit: BPF prog-id=44 op=UNLOAD Oct 07 12:12:47 PackageKit[1496]: get-updates transaction /22256_ecddeadb from uid 1000 finished with success after 4824ms Oct 07 12:12:50 plasmashell[1270]: trying to show an empty dialog Oct 07 12:12:56 DiscoverNotifie[1473]: inotify read(): Bad file descriptor Oct 07 12:12:56 kernel: show_signal: 58 callbacks suppressed Oct 07 12:12:56 kernel: traps: gmain[1935] trap int3 ip:7f90cbfe9def sp:7f90b1b23790 error:0 in libglib-2.0.so.0.7000.0[7f90cbfab000+91000] Oct 07 12:12:56 audit[1473]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=1473 comm="gmain" exe="/usr/libexec/DiscoverNotifier" sig=5 res=1 Oct 07 12:12:56 systemd[1]: Created slice Slice /system/systemd-coredump. Oct 07 12:12:56 audit: BPF prog-id=49 op=LOAD Oct 07 12:12:56 audit: BPF prog-id=50 op=LOAD Oct 07 12:12:56 audit: BPF prog-id=51 op=LOAD Oct 07 12:12:56 systemd[1]: Started Process Core Dump (PID 1992/UID 0). Oct 07 12:12:56 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-1992-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' Oct 07 12:12:57 systemd-coredump[1994]: Process 1473 (DiscoverNotifie) of user 1000 dumped core. Found module linux-vdso.so.1 with build-id: a163a65077b549ecf47548415b039e8470b2b031 Found module libnss_resolve.so.2 with build-id: 4a47d35758f2657628a3657c1000a5958dac65b7 Found module libnss_sss.so.2 with build-id: f8ff93ecdf21e431b595f5ea823fe396d56da42d Found module libjavascriptcoregtk-4.0.so.18 with build-id: c15a43b6879f957cfd2f4bd8973ff16230934d93 Found module pacrunner_webkit.so with build-id: 8825df721dcf4c36ff066c450fa3a83d5c77ed24 Found module libproxy.so.1 with build-id: 7902906e49479f772693921afa9c7f27ceb46678 Found module libgiolibproxy.so with build-id: b7028025f4d08733a21c188704028ada0d0444e6 Found module libdconfsettings.so with build-id: f07853974014f14e04029f524a32d4aea9558c1d Found module libgiognomeproxy.so with build-id: 2b4eb9482059626da70b992207603b6468c1a4ca Found module libopensc.so.8 with build-id: 44d3807ac7d8c7d65741cc0662c945ac27e9aa85 Found module opensc-pkcs11.so with build-id: b59a39986e9a89dc398ad4c0af93e30435a10ae6 Found module p11-kit-trust.so with 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build-id: dd7faf7805a0041b9267a45b4f039361bb2eb3d5 Found module libexpat.so.1 with build-id: de380d46dd01700b75b3cecd611e3ec7da062253 Found module libassuan.so.0 with build-id: 36e487827c8ec9335bbb100d25524a63cad5e689 Found module libgmodule-2.0.so.0 with build-id: 194e4d8da706fd9452a6fff36459b7ffbeeb5091 Found module libjson-glib-1.0.so.0 with build-id: ff150bb944b7d341fb33c367b230a0c005ac1833 Found module libsoup-2.4.so.1 with build-id: df9edbe80795b6dac09edf317981da8d38291cfd Found module libostree-1.so.1 with build-id: 405de44d508ab81b8da0ddeab00055681039e55c Found module libpolkit-gobject-1.so.0 with build-id: 191b7c001873697be3647ebaa9dddc14744e49ec Found module libpolkit-agent-1.so.0 with build-id: 8786c72d4b7f19616727e966c9c25e64ba343f78 Found module libseccomp.so.2 with build-id: dfb8cd152ca8a3c0daeaba68c5bad6baefe36646 Found module libgpgme.so.11 with build-id: 9f5f2923b366916ff60154ed460ea28f4232a3d2 Found module libdconf.so.1 with build-id: b5be8e29fb66628612e3b575d835cc45b0699a3e Found module libarchive.so.13 with build-id: cf0c29347b92a0b20338dc39d4bec8b19f284397 Found module libgobject-2.0.so.0 with build-id: bbd30c8f7fde96b24695d46d412293c2178bddac Found module libgio-2.0.so.0 with build-id: 871adc0d488cf2e1b59821604b134623c5e825f4 Found module libflatpak.so.0 with build-id: ef1d6dc7a82343e9233f4e84089bfb383ce46c71 Found module FlatpakNotifier.so with build-id: eab107182d0a0f97cb1c7c55aff712c414fe8506 Found module libpackagekitqt5.so.1 with build-id: fec62a39724b1720bb647835720a182bd7a8cd9b Found module DiscoverPackageKitNotifier.so with build-id: 78948eb6e06d852f548da141ae19d95926609146 Found module libKF5Style.so.5 with build-id: 9e58ec2f33075a57c7dc9a6715974c3ae6eb0434 Found module libbreezecommon5.so.5 with build-id: 622e349faf56df37af8e769559e53aee37b6559d Found module breeze.so with build-id: 7e7a1b3c8738130a009c3ae177aedccd9521a11e Found module libusbmuxd-2.0.so.6 with build-id: 827b916672da07bf776ac9ad6d0625c07bf29477 Found module libQt5QmlModels.so.5 with build-id: 53878b01c505c31cf1fd73d4e84c19d243706396 Found module libplist-2.0.so.3 with build-id: 9e8d521dd0ceefea448846d36fc477c767f402e0 Found module libimobiledevice-1.0.so.6 with build-id: 5542d53734e32d8a128c4934b16c6ec0d5ccd4f3 Found module libudev.so.1 with build-id: 06534927bebf5d338c48c95f387c3579b89d84ac Found module libKF5Archive.so.5 with build-id: 3e65d59f7f6240f36ef823c357c80752e3bd9720 Found module libQt5Svg.so.5 with build-id: 0680bd6180e94524d6540a38e3a5f24d003935b6 Found module libQt5PrintSupport.so.5 with build-id: 0413aeb232168b457c06631c9eb6fe74c08ba528 Found module libKF5GlobalAccel.so.5 with build-id: 3f66e7d9a7f73d41cd5d4b36a8317205350a5dba Found module libQt5QuickTemplates2.so.5 with build-id: bac34380e9e113cbd137cb67143df4a8ed2f7c2e Found module libQt5Qml.so.5 with build-id: 0c51f7f974f498a90a4c44dbb67ddc6df41344d0 Found module libQt5Quick.so.5 with build-id: 5e7fd07ee191666ce5b885e56664570b5c91ecdf Found module libXfixes.so.3 with build-id: e8020da14577d275b75ed0c4cb18b1050fc33595 Found module libXrender.so.1 with build-id: 45e135fd2ee2393b7eb0c94f964542b8326582e1 Found module libKF5Codecs.so.5 with build-id: 413ecc147215a418147bca2547611a803608eb1d Found module libKF5GuiAddons.so.5 with build-id: 4f541fefbb2a715f4b484e3b9c4be10aa50fe933 Found module libKF5ItemViews.so.5 with build-id: 2cd4b8cbddbc6ef4916205c9edd89fedeb19aabc Found module libKF5Solid.so.5 with build-id: 760d8aace50c8f05691913b386c6833ed5a6bd2d Found module libKF5Bookmarks.so.5 with build-id: 0083bdd0e5e603d36769ce8e4f53a7dbcd1493dd Found module libKF5WidgetsAddons.so.5 with build-id: 001973fb805f7b24d2440253d4fe28233d300638 Found module libKF5ConfigWidgets.so.5 with build-id: 916a9fef6d269572846d9404275978bf2e6de96f Found module libKF5IconThemes.so.5 with build-id: 6b15912708d490982b4a284d0f9040add80fbcf1 Found module libKF5XmlGui.so.5 with build-id: 80d28ae48bbc841b636ddcd8062df0b69ed870cf Found module libKF5Completion.so.5 with build-id: 491cc94d58f8fffd8e7050075bb4d5fb900e8f4c Found module libKF5JobWidgets.so.5 with build-id: daf7fa709b6da136fa784c43a694aebf31f740ff Found module libQt5QuickControls2.so.5 with build-id: 823dec73e7733e9cf9875869099c61eac364e931 Found module libXcursor.so.1 with build-id: fb3d6eb4c582d4761eab821bc0ceb77fc7c2654f Found module libKF5WaylandClient.so.5 with build-id: da2cd41b471585243738028a8e24b2692687030f Found module libKF5KIOWidgets.so.5 with build-id: b87df317755e6a4c1b5a888d8d9e70c91dc85653 Found module libKF5KIOFileWidgets.so.5 with build-id: 404a86f448ff2c2af847fcb6017008377cdc5635 Found module KDEPlasmaPlatformTheme.so with build-id: 31b0d3921def88bda0dfa95e3e715615334d5b5c Found module libxml2.so.2 with build-id: 8f21e0bbe0106c5c5cd35859487dcc074b8f13bd Found module libffi.so.6 with build-id: 0129f72b58e11d59546f7f207d2c90af7ebd9a5e Found module libxkbcommon.so.0 with build-id: 534d0218e01a780844e80ce6544afc33731e716a Found module libfontconfig.so.1 with build-id: e50d477be88a082f6a2fd42a7db8278bb88466ca Found module libwayland-client.so.0 with build-id: ecba40c75b2d78de955fa69baada38ed183fd4f9 Found module libwayland-cursor.so.0 with build-id: 3df8fa12f532612fc50f17938906c434e86106ad Found module libQt5WaylandClient.so.5 with build-id: 94d950766a4f03a454cde4d0a2b1568202ab8aad Found module libqwayland-generic.so with build-id: 383b45a494d59d5899db40ecbb5610b98a28e0e0 Found module libbrotlicommon.so.1 with build-id: 9e92a8ec2d9efe80ec86e04fba0549cd3202ebc4 Found module libpcre2-8.so.0 with build-id: dbf58040a44903b428c4e68716aa4f45058ad650 Found module libgpg-error.so.0 with build-id: 42587ce26856ad15cf5630134f114599783477ed Found module libbrotlidec.so.1 with build-id: 57cb8a53e33f31a620f3739919414c0d00549f87 Found module libbz2.so.1 with build-id: 19ce300b78962ee0b113afb0f1016727a2f3c37b Found module libselinux.so.1 with build-id: 104040a9146de3345eebd544f253ad4f9f6cc8c7 Found module libattr.so.1 with build-id: 38932d6d81e2a95598ccc83ab14016fa87378891 Found module libogg.so.0 with build-id: 714c2b8484f85a852e216c4fc4bb2cf92872f37e Found module libvorbis.so.0 with build-id: d3aece982a2dfdf9f412b5fc8a4dc88722bde200 Found module libXau.so.6 with build-id: b6a2d4859848c28bf0a4fc8744d04b1935879af6 Found module libpcre.so.1 with build-id: fcbdb4731e50f20a47b62341a6841dd616fe495d Found module libicudata.so.69 with build-id: fae0a612a5535b81eaec823e8cedb06c89719d94 Found module libgcrypt.so.20 with build-id: 711d41580c5a8649a79a8430a985dac3e25b5ba2 Found module libcap.so.2 with build-id: 0214aa9cc6a8646eb9ec27ab7dda6a2219da6500 Found module liblz4.so.1 with build-id: fd02c4542a1ce1ad6c503b958447be1c37a4afee Found module libzstd.so.1 with build-id: c594c701d8f5ba174a5be306973fa9803d65e327 Found module liblzma.so.5 with build-id: 7fec53ce7cba9489f130c99cfd3ace82e9dde0ee Found module libgraphite2.so.3 with build-id: 58f949a538f65a6221e442879144b368f663f7e3 Found module libfreetype.so.6 with build-id: 6d98d390da279e5c22ebe472a552b3470554655b Found module libGLdispatch.so.0 with build-id: 130c20202b2fcdf94f12ec542a490799a28b1d83 Found module libGLX.so.0 with build-id: 232c53aba655fe406bd23b782ab22885fc4b5474 Found module libresolv.so.2 with build-id: 22c0c0eb634a1a2e96f392587a07de92525686ff Found module libkeyutils.so.1 with build-id: 2560a16099ad1875f7ea2195ae25b97ea168a758 Found module libkrb5support.so.0 with build-id: 03649849c4d1813c307624a711b03fb15e7124cb Found module libcom_err.so.2 with build-id: a1d791cd7600f5609702a895a64d9131d1cd7b8f Found module libk5crypto.so.3 with build-id: 11238d51059ecf299699dc4d24a74e67a64aa725 Found module libkrb5.so.3 with build-id: 0582e999cc7d74e1ec2dc7b3c9f7aa4dae7342f6 Found module libblkid.so.1 with build-id: 96be27216d8d6d7ba3694ca503cd1b07f60fa539 Found module libmount.so.1 with build-id: 7f7bccf74cb835b64429e61ea0ec03cd0cb95b8b Found module libacl.so.1 with build-id: 24b2ced347e35fc1fbc66dfd90c65930ebce8628 Found module libKF5AuthCore.so.5 with build-id: b97e7d8817b6666f0f78bb1c80803a768314ce10 Found module libXi.so.6 with build-id: e1d4fcbcab03948da50a0e175ac2459c335e7939 Found module libXext.so.6 with build-id: 08e82aa07cb7910a08d8386fb16de7896ce290f4 Found module libltdl.so.7 with build-id: 4d1cbc08cd7060e81505ddc83d6e8a16d5f69583 Found module libtdb.so.1 with build-id: efecd4941ce305b2798f67e1f20c4ebd1b80cffd Found module libvorbisfile.so.3 with build-id: 97bc441918c920e48e93a50256eb8d8b851bc741 Found module libxcb-keysyms.so.1 with build-id: 7c10ab2b53bd04ced7f977b13ad09bda7dda9aad Found module libxcb.so.1 with build-id: 1352e33391b3079347f320218799d6e531bd42f1 Found module libglib-2.0.so.0 with build-id: d8a7fdad310ada7c7d2ea0820ee5e6b555a9f1ce Found module libpcre2-16.so.0 with build-id: 9a44590715542397024a8ec9b9fb19fa4c6ec9e9 Found module libicuuc.so.69 with build-id: 45119735453983eea1a3fb59b0ed34a6e61d8c5a Found module libicui18n.so.69 with build-id: 96cea623123108e425250a0c59fa6221e96cadb2 Found module libsystemd.so.0 with build-id: 9b9450f68ebd1030091d1dc0f15a51e4cb1360fc Found module libharfbuzz.so.0 with build-id: 620a4b6e2914d6e1301c086def09a60e58450dc3 Found module libpng16.so.16 with build-id: afcd45d29b0d579615db44a29213544328adde6f Found module libGL.so.1 with build-id: 0937fe2f900086e5fe7eea478e5abf625bbd2f38 Found module libdbus-1.so.3 with build-id: 58e800f0865bde326c5c9ce510062d5b19902f67 Found module libgcc_s.so.1 with build-id: 279c1648ee67377b5de1c45a244740beea48423e Found module libm.so.6 with build-id: fed79663436256eb88044bf3cff419c08487da77 Found module libQt5Xml.so.5 with build-id: 39399e29b74f5b88de403e2e47da86e11fbda40b Found module libcrypto.so.1.1 with build-id: 3ead607210606611d5f3398ee7e65198bd519de9 Found module libssl.so.1.1 with build-id: b3b8eaa0fc316f1bb70ca237310c5b09048d3648 Found module libgssapi_krb5.so.2 with build-id: c79d44cc56f67983ba388e5336c779d9f050114e Found module libz.so.1 with build-id: 5903f5c355c264403e4e7cdc66779584425ca3b8 Found module ld-linux-x86-64.so.2 with build-id: 7d2c06364366496318a96401aee1c204f80ee73a Found module libKF5KIOCore.so.5 with build-id: b726f59a6a05ecee59293fd04d84d39df1ea413c Found module libdbusmenu-qt5.so.2 with build-id: 25d3d41ee3c2294419bc62c82b064e58db416792 Found module libXtst.so.6 with build-id: 97ddda29c72fa18b2cae1274026730a04f8b0ae2 Found module libQt5X11Extras.so.5 with build-id: 451eaafe785f115758351baabca23797763cfe83 Found module libX11.so.6 with build-id: 8d35504e71458ad6afe46c6e64b45f56e752e904 Found module libQt5TextToSpeech.so.5 with build-id: d0df3a9bd2526b184e8e0b54774f52dfff0b3a07 Found module libcanberra.so.0 with build-id: 4a8979f12e505741f7704078b80d37e908b2384f Found module libKF5WindowSystem.so.5 with build-id: 01aa0e898142230ac31b0e4ec4cc83ada1d0d1fd Found module libc.so.6 with build-id: f891252f9069edee265f92cfb9a163880999588b Found module libstdc++.so.6 with build-id: ee39599366a0d94a90b4d1b74bd39bb6ce9e4cea Found module libQt5Core.so.5 with build-id: f8d828aa5c8545d1a519dafea614819f55121283 Found module libQt5Gui.so.5 with build-id: ac164622faeb4e32ab294d02d330a07e402f4608 Found module libQt5DBus.so.5 with build-id: 2953f8ac8a2e839e36ff57da51648e37658564b7 Found module libKF5ConfigCore.so.5 with build-id: c05a650fd316b2ef67625e6e09acc3cce3db7ca7 Found module libQt5Widgets.so.5 with build-id: c60b51bc6b70c7bb4980e0d7fd992a6589446a8b Found module libKF5CoreAddons.so.5 with build-id: a2bf06bac88140c1c6d0f4bdc5bc4acfcd05f837 Found module libKF5DBusAddons.so.5 with build-id: eb279898ba607e492f00acd2b9083054c84e82fa Found module libKF5I18n.so.5 with build-id: fbc0e7058c0d913664636ad4cae90c309f47ed1c Found module libKF5Service.so.5 with build-id: daa3c1b4c6acd427d6d159f33455d996f4b046e3 Found module libQt5Network.so.5 with build-id: 657835895c24222bef7a9f72fce80826b2c3c738 Found module libKF5Crash.so.5 with build-id: 1b6c083f1fd438f3c2904b343a8fe52f0ba7fe9c Found module libDiscoverNotifiers.so with build-id: 32e46396c218f0fb3108b1f4516886da3f5ca9a7 Found module libKF5IdleTime.so.5 with build-id: 2cc009e33aa722e81ed31029b32be9aed2e68732 Found module libKF5ConfigGui.so.5 with build-id: fad69f7812221f4e481f8958ecf808842b84336d Found module libKF5KIOGui.so.5 with build-id: 47ae16ffa00405993886849b488523bed35c013d Found module libKF5Notifications.so.5 with build-id: c0d7393a829f6010e39f6d539086d3a37076278f Found module DiscoverNotifier with build-id: 56046b542159b45af7503edc4014ec9cb765eff9 Stack trace of thread 1935: #0 0x00007f90cbfe9def g_log_structured_array (libglib-2.0.so.0 + 0x5bdef) #1 0x00007f90cbfea0b9 g_log_default_handler (libglib-2.0.so.0 + 0x5c0b9) #2 0x00007f90cbfeb48a g_logv (libglib-2.0.so.0 + 0x5d48a) #3 0x00007f90cbfeb773 g_log (libglib-2.0.so.0 + 0x5d773) #4 0x00007f90ba0a47d7 ik_source_read_some_events (libgio-2.0.so.0 + 0x13e7d7) #5 0x00007f90ba0a493b ik_source_dispatch (libgio-2.0.so.0 + 0x13e93b) #6 0x00007f90cbfe333f g_main_context_dispatch (libglib-2.0.so.0 + 0x5533f) #7 0x00007f90cc038288 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa288) #8 0x00007f90cbfe09e3 g_main_context_iteration (libglib-2.0.so.0 + 0x529e3) #9 0x00007f90cbfe0a31 glib_worker_main (libglib-2.0.so.0 + 0x52a31) #10 0x00007f90cc012152 g_thread_proxy (libglib-2.0.so.0 + 0x84152) #11 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #12 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1939: #0 0x00007f90cd30f84c read (libc.so.6 + 0x10184c) #1 0x00007f90cbfe372f g_main_context_check (libglib-2.0.so.0 + 0x5572f) #2 0x00007f90cc03811b g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa11b) #3 0x00007f90cbfe09e3 g_main_context_iteration (libglib-2.0.so.0 + 0x529e3) #4 0x00007f90a336d3ed dconf_gdbus_worker_thread (libdconfsettings.so + 0x73ed) #5 0x00007f90cc012152 g_thread_proxy (libglib-2.0.so.0 + 0x84152) #6 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #7 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1473: #0 0x00007f90cd3137ff __poll (libc.so.6 + 0x1057ff) #1 0x00007f90cc03821c g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa21c) #2 0x00007f90cbfe09e3 g_main_context_iteration (libglib-2.0.so.0 + 0x529e3) #3 0x00007f90cd935bee _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2f7bee) #4 0x00007f90cd8e31a2 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a51a2) #5 0x00007f90cd8eb6e4 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x2ad6e4) #6 0x0000556bc2d2a457 main (DiscoverNotifier + 0x9457) #7 0x00007f90cd23b560 __libc_start_call_main (libc.so.6 + 0x2d560) #8 0x00007f90cd23b60c __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x2d60c) #9 0x0000556bc2d2a5a5 _start (DiscoverNotifier + 0x95a5) Stack trace of thread 1941: #0 0x00007f90cd318f3d syscall (libc.so.6 + 0x10af3d) #1 0x00007f90cc031e5c g_cond_wait_until (libglib-2.0.so.0 + 0xa3e5c) #2 0x00007f90cbfb3471 g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0x25471) #3 0x00007f90cbfb35f6 g_async_queue_timeout_pop (libglib-2.0.so.0 + 0x255f6) #4 0x00007f90cc015129 g_thread_pool_thread_proxy.lto_priv.0 (libglib-2.0.so.0 + 0x87129) #5 0x00007f90cc012152 g_thread_proxy (libglib-2.0.so.0 + 0x84152) #6 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #7 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1938: #0 0x00007f90cd29877a __futex_abstimed_wait_common (libc.so.6 + 0x8a77a) #1 0x00007f90cd29b1f4 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x8d1f4) #2 0x00007f90cd72cf7a _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xeef7a) #3 0x00007f90cd72a774 _ZN17QThreadPoolThread3runEv (libQt5Core.so.5 + 0xec774) #4 0x00007f90cd7274a6 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe94a6) #5 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #6 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1937: #0 0x00007f90cd3137ff __poll (libc.so.6 + 0x1057ff) #1 0x00007f90ced73fb8 _ZN6KCrash12startProcessEiPPKcb.constprop.0 (libKF5Crash.so.5 + 0x5fb8) #2 0x00007f90ced74c20 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x6c20) #3 0x00007f90cd250760 __restore_rt (libc.so.6 + 0x42760) #4 0x00007f90cd29d85c __pthread_kill_implementation (libc.so.6 + 0x8f85c) #5 0x00007f90cd2506b6 raise (libc.so.6 + 0x426b6) #6 0x00007f90cd23a7d3 abort (libc.so.6 + 0x2c7d3) #7 0x00007f90cbfacd4c g_assertion_message (libglib-2.0.so.0 + 0x1ed4c) #8 0x00007f90cc0087af g_assertion_message_expr (libglib-2.0.so.0 + 0x7a7af) #9 0x00007f90ba1c20cc flatpak_summary_find_ref_map (libflatpak.so.0 + 0x7c0cc) #10 0x00007f90ba1c27f6 flatpak_summary_lookup_ref (libflatpak.so.0 + 0x7c7f6) #11 0x00007f90ba17ec46 flatpak_remote_state_lookup_ref (libflatpak.so.0 + 0x38c46) #12 0x00007f90ba1dfc09 flatpak_dir_find_latest_rev.constprop.0 (libflatpak.so.0 + 0x99c09) #13 0x00007f90ba1baeca resolve_all_ops.lto_priv.0 (libflatpak.so.0 + 0x74eca) #14 0x00007f90ba1c7667 flatpak_transaction_real_run.lto_priv.0 (libflatpak.so.0 + 0x81667) #15 0x00007f90ba1a2199 flatpak_installation_list_installed_refs_for_update (libflatpak.so.0 + 0x5c199) #16 0x00007f90ba2a9d18 _ZZN15FlatpakNotifier17loadRemoteUpdatesEPNS_12InstallationEENKUlvE0_clEv (FlatpakNotifier.so + 0x3d18) #17 0x00007f90ba2aa95c _ZN12QtConcurrent15RunFunctionTaskIbE3runEv (FlatpakNotifier.so + 0x495c) #18 0x00007f90cd72a5b0 _ZN17QThreadPoolThread3runEv (libQt5Core.so.5 + 0xec5b0) #19 0x00007f90cd7274a6 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe94a6) #20 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #21 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1485: #0 0x00007f90cd3137ff __poll (libc.so.6 + 0x1057ff) #1 0x00007f90cc03821c g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa21c) #2 0x00007f90cbfe09e3 g_main_context_iteration (libglib-2.0.so.0 + 0x529e3) #3 0x00007f90cd935bee _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2f7bee) #4 0x00007f90cd8e31a2 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a51a2) #5 0x00007f90cd7262aa _ZN7QThread4execEv (libQt5Core.so.5 + 0xe82aa) #6 0x00007f90ce229b6b _ZN22QDBusConnectionManager3runEv (libQt5DBus.so.5 + 0x1bb6b) #7 0x00007f90cd7274a6 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe94a6) #8 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #9 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1936: #0 0x00007f90b9f23475 g_object_ref (libgobject-2.0.so.0 + 0x1d475) #1 0x00007f90ba068245 on_worker_closed (libgio-2.0.so.0 + 0x102245) #2 0x00007f90ba081b37 _g_dbus_worker_do_read_cb (libgio-2.0.so.0 + 0x11bb37) #3 0x00007f90ba016f9a g_task_return_now (libgio-2.0.so.0 + 0xb0f9a) #4 0x00007f90ba01719b g_task_return (libgio-2.0.so.0 + 0xb119b) #5 0x00007f90ba08097a _g_socket_read_with_control_messages_ready (libgio-2.0.so.0 + 0x11a97a) #6 0x00007f90b9ffdaab socket_source_dispatch (libgio-2.0.so.0 + 0x97aab) #7 0x00007f90cbfe333f g_main_context_dispatch (libglib-2.0.so.0 + 0x5533f) #8 0x00007f90cc038288 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa288) #9 0x00007f90cbfe2903 g_main_loop_run (libglib-2.0.so.0 + 0x54903) #10 0x00007f90ba07983a gdbus_shared_thread_func (libgio-2.0.so.0 + 0x11383a) #11 0x00007f90cc012152 g_thread_proxy (libglib-2.0.so.0 + 0x84152) #12 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #13 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Stack trace of thread 1934: #0 0x00007f90cd3212fe __send (libc.so.6 + 0x1132fe) #1 0x00007f90cecb0a82 _ZN24QNetworkInterfaceManager4scanEv (libQt5Network.so.5 + 0xfaa82) #2 0x00007f90ceca0814 _ZN24QNetworkInterfaceManager13allInterfacesEv (libQt5Network.so.5 + 0xea814) #3 0x00007f90ceca1aa5 _ZN17QNetworkInterface13allInterfacesEv (libQt5Network.so.5 + 0xebaa5) #4 0x00007f90b1bf38af _ZN14QGenericEngine15doRequestUpdateEv (libqgenericbearer.so + 0x58af) #5 0x00007f90cd8f30fb _ZNK11QMetaMethod6invokeEP7QObjectN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS5_S5_S5_S5_S5_S5_S5_S5_S5_ (libQt5Core.so.5 + 0x2b50fb) #6 0x00007f90cd8f422a _ZN11QMetaObject12invokeMethodEP7QObjectPKcN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS7_S7_S7_S7_S7_S7_S7_S7_S7_ (libQt5Core.so.5 + 0x2b622a) #7 0x00007f90cec8c821 _ZN35QNetworkConfigurationManagerPrivate11pollEnginesEv (libQt5Network.so.5 + 0xd6821) #8 0x00007f90cd9183f0 _Z10doActivateILb0EEvP7QObjectiPPv (libQt5Core.so.5 + 0x2da3f0) #9 0x00007f90cd91b64e _ZN6QTimer7timeoutENS_14QPrivateSignalE (libQt5Core.so.5 + 0x2dd64e) #10 0x00007f90cd90ee9f _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2d0e9f) #11 0x00007f90cd8e477b _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2a677b) #12 0x00007f90cd934e63 _ZN14QTimerInfoList14activateTimersEv (libQt5Core.so.5 + 0x2f6e63) #13 0x00007f90cd93576c _ZL19timerSourceDispatchP8_GSourcePFiPvES1_ (libQt5Core.so.5 + 0x2f776c) #14 0x00007f90cbfe333f g_main_context_dispatch (libglib-2.0.so.0 + 0x5533f) #15 0x00007f90cc038288 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa288) #16 0x00007f90cbfe09e3 g_main_context_iteration (libglib-2.0.so.0 + 0x529e3) #17 0x00007f90cd935b78 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2f7b78) #18 0x00007f90cd8e31a2 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a51a2) #19 0x00007f90cd7262aa _ZN7QThread4execEv (libQt5Core.so.5 + 0xe82aa) #20 0x00007f90cd7274a6 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xe94a6) #21 0x00007f90cd29bb17 start_thread (libc.so.6 + 0x8db17) #22 0x00007f90cd3206a0 __clone3 (libc.so.6 + 0x1126a0) Oct 07 12:12:57 systemd[1]: systemd-coredump@0-1992-0.service: Deactivated successfully. Oct 07 12:12:57 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-1992-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' Oct 07 12:12:57 systemd[1115]: app-org.kde.discover.notifier@autostart.service: Main process exited, code=killed, status=5/TRAP Oct 07 12:12:57 DiscoverNotifier[1993]: Unable to attach: program terminated with signal SIGTRAP, Trace/breakpoint trap. Oct 07 12:12:57 DiscoverNotifier[1993]: Exception ignored in: <gdb._GdbOutputFile object at 0x7fd21aa22200> Oct 07 12:12:57 DiscoverNotifier[1993]: Traceback (most recent call last): Oct 07 12:12:57 DiscoverNotifier[1993]: File "/usr/share/gdb/python/gdb/__init__.py", line 43, in flush Oct 07 12:12:57 DiscoverNotifier[1993]: def flush(self): Oct 07 12:12:57 DiscoverNotifier[1993]: KeyboardInterrupt: Oct 07 12:12:57 audit: BPF prog-id=51 op=UNLOAD Oct 07 12:12:57 audit: BPF prog-id=50 op=UNLOAD Oct 07 12:12:57 audit: BPF prog-id=49 op=UNLOAD Oct 07 12:12:57 systemd[1115]: app-org.kde.discover.notifier@autostart.service: Failed with result 'signal'. Oct 07 12:12:57 systemd[1115]: app-org.kde.discover.notifier@autostart.service: Consumed 4.928s CPU time. Oct 07 12:13:06 abrt-notification[2056]: Process 1473 (DiscoverNotifier) crashed in ik_source_read_some_events()
*** This bug has been marked as a duplicate of bug 460066 ***