Crash on monitor attach

[coffebar]

Hi, i had crash many times when "unplug"-"plug-in" external monitor (HDMI) on Hyprland.
I can't reproduce it manually, but i hope this logs will help to do something:

Mar 02 20:52:44 crab kernel: waybar[1148]: segfault at 55f80031504b ip 000055fd8006c971 sp 00007ffe57cb7b30 error 4 in waybar[55fd80001000+173000] likely on CPU 1 (core 1, socket 0)
Mar 02 20:52:44 crab kernel: Code: 00 48 89 45 c8 31 c0 48 3b 5f 40 75 1a e9 b7 01 00 00 0f 1f 80 00 00 00 00 48 83 c3 08 49 3b 5d 40 0f 84 a2 01 00 00 48 8b 03 <48> 8b 00 48 8b 08 49 39 0e 75 e4 4c 8b 78 08 48 8b 40 10 48 8d 4d
Mar 02 20:52:44 crab systemd[1]: Created slice Slice /system/systemd-coredump.
Mar 02 20:52:44 crab systemd[1]: Started Process Core Dump (PID 3583/UID 0).
Mar 02 20:52:45 crab systemd-coredump[3586]: [🡕] Process 1148 (waybar) of user 1000 dumped core.

Stack trace of thread 1148:
#0  0x000055fd8006c971 n/a (waybar + 0x95971)
#1  0x000055fd8006f5fb n/a (waybar + 0x985fb)
#2  0x00007ff2695ff869 n/a (libglibmm-2.4.so.1 + 0x56869)
#3  0x00007ff2694bf82b g_main_context_dispatch (libglib-2.0.so.0 + 0x5582b)
#4  0x00007ff269516cc9 n/a (libglib-2.0.so.0 + 0xaccc9)
#5  0x00007ff2694be0e2 g_main_context_iteration (libglib-2.0.so.0 + 0x540e2)
#6  0x00007ff26971076e g_application_run (libgio-2.0.so.0 + 0xde76e)
#7  0x000055fd8001c0a4 n/a (waybar + 0x450a4)
#8  0x000055fd8001aac6 main (waybar + 0x43ac6)
#9  0x00007ff268c3c790 n/a (libc.so.6 + 0x23790)
#10 0x00007ff268c3c84a __libc_start_main (libc.so.6 + 0x2384a)
#11 0x000055fd80026d95 n/a (waybar + 0x4fd95)

Stack trace of thread 1406:
#0  0x00007ff268d211b6 epoll_wait (libc.so.6 + 0x1081b6)
#1  0x000055fd80135d3e n/a (waybar + 0x15ed3e)
#2  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#3  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#4  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#5  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1412:
#0  0x00007ff268c9b766 n/a (libc.so.6 + 0x82766)
#1  0x00007ff268c9e597 pthread_cond_clockwait (libc.so.6 + 0x85597)
#2  0x000055fd800a82df n/a (waybar + 0xd12df)
#3  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#4  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1195:
#0  0x00007ff268c52c0a __sigtimedwait (libc.so.6 + 0x39c0a)
#1  0x00007ff268c522dc sigwait (libc.so.6 + 0x392dc)
#2  0x000055fd8005c69c n/a (waybar + 0x8569c)
#3  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#4  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1196:
#0  0x00007ff268d139df __poll (libc.so.6 + 0xfa9df)
#1  0x00007ff269516c2f n/a (libglib-2.0.so.0 + 0xacc2f)
#2  0x00007ff2694be0e2 g_main_context_iteration (libglib-2.0.so.0 + 0x540e2)
#3  0x00007ff2694be132 n/a (libglib-2.0.so.0 + 0x54132)
#4  0x00007ff2694ecdb5 n/a (libglib-2.0.so.0 + 0x82db5)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1415:
#0  0x00007ff268d0f96c read (libc.so.6 + 0xf696c)
#1  0x000055fd8009697c n/a (waybar + 0xbf97c)
#2  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#3  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#4  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#5  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1199:
#0  0x00007ff268d139df __poll (libc.so.6 + 0xfa9df)
#1  0x00007ff269516c2f n/a (libglib-2.0.so.0 + 0xacc2f)
#2  0x00007ff2694bed8f g_main_loop_run (libglib-2.0.so.0 + 0x54d8f)
#3  0x00007ff26973caec n/a (libgio-2.0.so.0 + 0x10aaec)
#4  0x00007ff2694ecdb5 n/a (libglib-2.0.so.0 + 0x82db5)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1417:
#0  0x00007ff268c9b766 n/a (libc.so.6 + 0x82766)
#1  0x00007ff268c9e597 pthread_cond_clockwait (libc.so.6 + 0x85597)
#2  0x000055fd80159e59 n/a (waybar + 0x182e59)
#3  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#4  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1200:
#0  0x00007ff268d139df __poll (libc.so.6 + 0xfa9df)
#1  0x00007ff269516c2f n/a (libglib-2.0.so.0 + 0xacc2f)
#2  0x00007ff2694be0e2 g_main_context_iteration (libglib-2.0.so.0 + 0x540e2)
#3  0x00007ff2646bcfde n/a (libdconfsettings.so + 0x5fde)
#4  0x00007ff2694ecdb5 n/a (libglib-2.0.so.0 + 0x82db5)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1405:
#0  0x00007ff268d139df __poll (libc.so.6 + 0xfa9df)
#1  0x00007ff2693988c7 n/a (libpulse.so.0 + 0x338c7)
#2  0x00007ff26938246c pa_mainloop_poll (libpulse.so.0 + 0x1d46c)
#3  0x00007ff26938c42c pa_mainloop_iterate (libpulse.so.0 + 0x2742c)
#4  0x00007ff26938c4e1 pa_mainloop_run (libpulse.so.0 + 0x274e1)
#5  0x00007ff26939cc02 n/a (libpulse.so.0 + 0x37c02)
#6  0x00007ff268312c57 n/a (libpulsecommon-16.1.so + 0x5bc57)
#7  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#8  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1407:
#0  0x00007ff268c9b766 n/a (libc.so.6 + 0x82766)
#1  0x00007ff268c9e597 pthread_cond_clockwait (libc.so.6 + 0x85597)
#2  0x000055fd800fce25 n/a (waybar + 0x125e25)
#3  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#4  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1408:
#0  0x00007ff268d211b6 epoll_wait (libc.so.6 + 0x1081b6)
#1  0x000055fd800fbf5d n/a (waybar + 0x124f5d)
#2  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#3  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#4  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#5  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1355:
#0  0x00007ff268d0f96c read (libc.so.6 + 0xf696c)
#1  0x00007ff268c97254 _IO_file_underflow (libc.so.6 + 0x7e254)
#2  0x00007ff268c98626 _IO_default_uflow (libc.so.6 + 0x7f626)
#3  0x00007ff268c8b02b _IO_getline_info (libc.so.6 + 0x7202b)
#4  0x00007ff268c89de0 _IO_fgets (libc.so.6 + 0x70de0)
#5  0x000055fd8004e7c1 n/a (waybar + 0x777c1)
#6  0x000055fd800f44e0 n/a (waybar + 0x11d4e0)
#7  0x000055fd800f531f n/a (waybar + 0x11e31f)
#8  0x000055fd800ef755 n/a (waybar + 0x118755)
#9  0x000055fd800f1c20 n/a (waybar + 0x11ac20)
#10 0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#11 0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#12 0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1410:
#0  0x00007ff268d0f96c read (libc.so.6 + 0xf696c)
#1  0x00007ff268c97254 _IO_file_underflow (libc.so.6 + 0x7e254)
#2  0x00007ff268c8aec0 __getdelim (libc.so.6 + 0x71ec0)
#3  0x000055fd80042de1 n/a (waybar + 0x6bde1)
#4  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#5  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#6  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#7  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1411:
#0  0x00007ff268c9b766 n/a (libc.so.6 + 0x82766)
#1  0x00007ff268c9e597 pthread_cond_clockwait (libc.so.6 + 0x85597)
#2  0x000055fd800a230f n/a (waybar + 0xcb30f)
#3  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#4  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)


Stack trace of thread 1413:
#0  0x00007ff268c9b766 n/a (libc.so.6 + 0x82766)
#1  0x00007ff268c9e597 pthread_cond_clockwait (libc.so.6 + 0x85597)
#2  0x000055fd8004ed2f n/a (waybar + 0x77d2f)
#3  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#4  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1414:
#0  0x00007ff268c9b766 n/a (libc.so.6 + 0x82766)
#1  0x00007ff268c9e597 pthread_cond_clockwait (libc.so.6 + 0x85597)
#2  0x000055fd8009ac49 n/a (waybar + 0xc3c49)
#3  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#4  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 1416:
#0  0x00007ff268d0f96c read (libc.so.6 + 0xf696c)
#1  0x000055fd8009ad0c n/a (waybar + 0xc3d0c)
#2  0x000055fd80044dc1 n/a (waybar + 0x6ddc1)
#3  0x00007ff268ed72c3 execute_native_thread_routine (libstdc++.so.6 + 0xd72c3)
#4  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#5  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)

Stack trace of thread 3542:
#0  0x00007ff268d190dd syscall (libc.so.6 + 0x1000dd)
#1  0x00007ff2695103e3 g_cond_wait_until (libglib-2.0.so.0 + 0xa63e3)
#2  0x00007ff26948d893 n/a (libglib-2.0.so.0 + 0x23893)
#3  0x00007ff2694f267b n/a (libglib-2.0.so.0 + 0x8867b)
#4  0x00007ff2694ecdb5 n/a (libglib-2.0.so.0 + 0x82db5)
#5  0x00007ff268c9ebb5 n/a (libc.so.6 + 0x85bb5)
#6  0x00007ff268d20d90 n/a (libc.so.6 + 0x107d90)
ELF object binary architecture: AMD x86-64

---

UPD: I don't have any crashes for a long time for now

[fritzrehde]

I also get

[2023-05-13 22:01:11.924] [debug] Received SIGCHLD in signalThread
[2023-05-13 22:01:11.924] [debug] Cmd exited with code 0
[2023-05-13 22:01:12.835] [debug] Received SIGCHLD in signalThread
[2023-05-13 22:01:12.835] [debug] Cmd exited with code 0
[2023-05-13 22:01:12.837] [debug] Cmd exited with code 0
[2023-05-13 22:01:12.837] [debug] Received SIGCHLD in signalThread
[2023-05-13 22:01:12.942] [debug] Received SIGCHLD in signalThread
[2023-05-13 22:01:12.942] [debug] Cmd exited with code 0
[2023-05-13 22:01:12.952] [debug] Cmd exited with code 0
[2023-05-13 22:01:12.952] [debug] Received SIGCHLD in signalThread
[2023-05-13 22:01:13.283] [debug] Output removed: Dell Inc. DELL P2419H
zsh: segmentation fault (core dumped)  waybar -l debug

everytime I disconnect an output in sway.
The Ouput removed line in the debug output refers to the external monitor that got removed. So for some reason (a wild guess: maybe the output is null all of a sudden and that leads to a segfault), after the output gets disconnected, waybar dies.

[lfos]

@fritzrehde - Do you use the battery module? 7b0d2e8 might fix the issue you described. (The original issue reported here by @coffebar looks different.)