Created attachment 158803 [details] Output of gdb debugging SUMMARY When disconnected from the internet, opening Discover will result in a segmentation fault. If Discover has recently opened while connected to the internet, it will not crash again, even when disconnected. However, given enough time between opening, this behaviour returns. STEPS TO REPRODUCE 1. Turn internet off 2. Open Discover OBSERVED RESULT Discover crashes EXPECTED RESULT Discover displays its cached apps, the same as if it had been loaded online recently and then reopened when offline. Note: The crash handler only displayed "The crash information could not be generated". The attached trace is from running `gdb plasma-discover` and downloading debug symbols. SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.27.4 KDE Frameworks Version: 5.105.0 Qt Version: 5.15.9 ADDITIONAL INFORMATION Running a slightly odd kernel (6.2.8-eupnea, from the Depthboot project). I don't think this would cause an issue(?), but figured it would be polite to mention.
Your gdb output is missing a backtrace, could you provide one as well?
(In reply to Tobias Fella from comment #1) > Your gdb output is missing a backtrace, could you provide one as well? Oops, my mistake. As I mentioned, the KDE Crash Reporter is failing to generate a backtrace. How may I do so with gdb (or otherwise fix the crash reporter)?
Okay, I figured it out. Here's the backtrace ``` #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44 #1 0x00007f6e4f69f2d3 in __pthread_kill_internal (signo=11, threadid=<optimized out>) at pthread_kill.c:78 #2 0x00007f6e4f64fa08 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26 #3 0x00007f6e51d1d81f in KCrash::defaultCrashHandler(int) (sig=11) at /usr/src/debug/kcrash/kcrash-5.106.0/src/kcrash.cpp:626 #4 0x00007f6e4f64fab0 in <signal handler called> () at /usr/lib/libc.so.6 #5 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44 #6 0x00007f6e4f69f2d3 in __pthread_kill_internal (signo=11, threadid=<optimized out>) at pthread_kill.c:78 #7 0x00007f6e4f64fa08 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26 #8 0x00007f6e4f64fab0 in <signal handler called> () at /usr/lib/libc.so.6 #9 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=15, no_tid=no_tid@entry=0) at pthread_kill.c:44 #10 0x00007f6e4f69f2d3 in __pthread_kill_internal (signo=15, threadid=<optimized out>) at pthread_kill.c:78 #11 0x00007f6e4f64fa08 in __GI_raise (sig=15) at ../sysdeps/posix/raise.c:26 #12 0x00007f6e4ea52210 in g_closure_invoke (closure=0x7f6de8003f00, return_value=0x0, n_param_values=3, param_values=0x7f6dfdfbc930, invocation_hint=0x7f6dfdfbc8b0) at ../glib/gobject/gclosure.c:832 #13 0x00007f6e4ea80427 in signal_emit_unlocked_R.isra.0 (node=node@entry=0x56045ba71560, detail=detail@entry=0, instance=instance@entry=0x7f6de8005850, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7f6dfdfbc930) at ../glib/gobject/gsignal.c:3851 #14 0x00007f6e4ea70095 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7f6dfdfbcb00) at ../glib/gobject/gsignal.c:3565 #15 0x00007f6e4ea70324 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3622 #16 0x00007f6e4e532eeb in emit_closed_in_idle (user_data=0x7f6dec0096e0) at ../glib/gio/gdbusconnection.c:1375 #17 0x00007f6e4e70f53b in g_main_dispatch (context=0x56045ba79130) at ../glib/glib/gmain.c:3460 #18 g_main_context_dispatch (context=0x56045ba79130) at ../glib/glib/gmain.c:4200 #19 0x00007f6e4e76c219 in g_main_context_iterate.constprop.0 (context=0x56045ba79130, block=1, dispatch=1, self=<optimized out>) at ../glib/glib/gmain.c:4276 #20 0x00007f6e4e70e1a2 in g_main_context_iteration (context=context@entry=0x56045ba79130, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4343 #21 0x00007f6e16921fde in dconf_gdbus_worker_thread (user_data=0x56045ba79130) at ../dconf/gdbus/dconf-gdbus-thread.c:82 #22 0x00007f6e4e73c315 in g_thread_proxy (data=0x56045ba792a0) at ../glib/glib/gthread.c:831 #23 0x00007f6e4f69d44b in start_thread (arg=<optimized out>) at pthread_create.c:444 #24 0x00007f6e4f720e40 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 ```
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Whoops, I didn't realise it was the submitter that was supposed to remove NEEDSINFO after providing a backtrace
Looks like a bug in dconf. I am guessing this has since resolved itself?
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!