Clementine crashes under Wayland

[JacobHenner]

Before posting

Please follow the steps below and check the boxes with [x] once you did the step.

• [X] I checked the issue tracker for similar issues
• [X] I checked the changelog if the issue is already resolved
• [X] I tried the latest Clementine build from here

System information

Please provide information about your system and the version of Clementine used.

• Operating System: Arch Linux
• Clementine version: Clementine 1.4.0rc1-128-ge1c872666

Expected behaviour / actual behaviour

Expected: Clementine runs and remains open.

Actual: Clementine crashes with the following error message: __logging_message__19:50:54.543 ERROR unknown The Wayland connection broke. Did the Wayland compositor die?

This is on Arch, using the latest available qt5-wayland, running inside of GNOME. I've tried to reproduce this using other qt5 applications running in the same environment, and they have not crashed.

I haven't been able to narrow the crash down to a specific trigger, but I have noticed it has happened twice after Clementine has lost focus, and I've switched back to it with Alt-Tab.

Steps to reproduce the problem (only for bugs)

Open Clementine in Wayland under GNOME, wait for Clementine to crash.

[JacobHenner]

To be clear, this is a separate issue than the one described at https://github.com/clementine-player/Clementine/issues/6587

[jbroadus]

How long does it usually take to crash? I built an Arch VM running gdm+Gnome on Wayland, but haven't seen this yet. Is there anything interesting directly before the error message?

[JacobHenner]

It varies, but most of the time it's been after the window loses and regains focus. It's also happened after returning from the GNOME lock screen. There is nothing relevant before the error message.

[jbroadus]

Still haven't seen this. Have you looked to see if wayland is logging anything when this happens? You could also look at dmesg or your audit log to see if an LSM is blocking something.

[JacobHenner]

I'll take a look and report back.

[JacobHenner]

Here's a backtrace:

Stack trace of thread 5924:
#0  0x00007fa97cac0ce5 raise (libc.so.6 + 0x3bce5)
#1  0x00007fa97caaa857 abort (libc.so.6 + 0x25857)
#2  0x000055f07e0881a8 n/a (clementine + 0x2ff1a8)
#3  0x00007fa97f6b3ad8 n/a (libQt5Core.so.5 + 0xc1ad8)
#4  0x00007fa97f6b3bea n/a (libQt5Core.so.5 + 0xc1bea)
#5  0x00007fa97f680952 _ZNK14QMessageLogger5fatalEPKcz (libQt5Core.so.5 + 0x8e952)
#6  0x00007fa9740a9128 n/a (libQt5WaylandClient.so.5 + 0x54128)
#7  0x00007fa9740b9b51 _ZN15QtWaylandClient15QWaylandDisplay13flushRequestsEv (libQt5WaylandClient.so.5 + 0x64b51)
#8  0x00007fa97f8cd540 n/a (libQt5Core.so.5 + 0x2db540)
#9  0x00007fa97f8d0d62 _ZN15QSocketNotifier9activatedEiNS_14QPrivateSignalE (libQt5Core.so.5 + 0x2ded62)
#10 0x00007fa97f8d10b2 _ZN15QSocketNotifier5eventEP6QEvent (libQt5Core.so.5 + 0x2df0b2)
#11 0x00007fa97da63362 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15b362)
#12 0x00007fa97da6c819 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x164819)
#13 0x00007fa97f897a12 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2a5a12)
#14 0x00007fa97f8f0cd6 n/a (libQt5Core.so.5 + 0x2fecd6)
#15 0x00007fa97eb229be g_main_context_dispatch (libglib-2.0.so.0 + 0x6b9be)
#16 0x00007fa97eb24831 n/a (libglib-2.0.so.0 + 0x6d831)
#17 0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#18 0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#19 0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#20 0x00007fa97f89e586 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x2ac586)
#21 0x000055f07e093b3a main (clementine + 0x30ab3a)
#22 0x00007fa97caac023 __libc_start_main (libc.so.6 + 0x27023)
#23 0x000055f07e09debe _start (clementine + 0x314ebe)

Stack trace of thread 5933:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5930:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f2f1b28 n/a (libQt5DBus.so.5 + 0x15b28)
#7  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#8  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#9  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5928:
#0  0x00007fa97e5eecf5 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfcf5)
#1  0x00007fa9734b3e1c n/a (i965_dri.so + 0x4f8e1c)
#2  0x00007fa9734b3a18 n/a (i965_dri.so + 0x4f8a18)
#3  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#4  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5949:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5925:
#0  0x00007fa97e5eecf5 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfcf5)
#1  0x00007fa9734b3e1c n/a (i965_dri.so + 0x4f8e1c)
#2  0x00007fa9734b3a18 n/a (i965_dri.so + 0x4f8a18)
#3  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#4  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5932:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5951:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5926:
#0  0x00007fa97e5eecf5 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfcf5)
#1  0x00007fa9734b3e1c n/a (i965_dri.so + 0x4f8e1c)
#2  0x00007fa9734b3a18 n/a (i965_dri.so + 0x4f8a18)
#3  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#4  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5952:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97eb248c2 n/a (libglib-2.0.so.0 + 0x6d8c2)
#4  0x00007fa97eafbe71 n/a (libglib-2.0.so.0 + 0x44e71)
#5  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#6  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5927:
#0  0x00007fa97e5eecf5 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfcf5)
#1  0x00007fa9734b3e1c n/a (i965_dri.so + 0x4f8e1c)
#2  0x00007fa9734b3a18 n/a (i965_dri.so + 0x4f8a18)
#3  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#4  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5953:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb25843 g_main_loop_run (libglib-2.0.so.0 + 0x6e843)
#3  0x00007fa97ee54de8 n/a (libgio-2.0.so.0 + 0x59de8)
#4  0x00007fa97eafbe71 n/a (libglib-2.0.so.0 + 0x44e71)
#5  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#6  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5936:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5929:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5948:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5950:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5934:
#0  0x00007fa97cb79abf __poll (libc.so.6 + 0xf4abf)
#1  0x00007fa97eb247a0 n/a (libglib-2.0.so.0 + 0x6d7a0)
#2  0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#3  0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#4  0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#5  0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#6  0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#7  0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#8  0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Stack trace of thread 5935:
#0  0x00007fa97cb74d7e statx (libc.so.6 + 0xefd7e)
#1  0x00007fa97f82fa31 n/a (libQt5Core.so.5 + 0x23da31)
#2  0x00007fa97f7c9ced _ZNK9QFileInfo9isSymLinkEv (libQt5Core.so.5 + 0x1d7ced)
#3  0x000055f07e1a6fa7 _ZN14LibraryWatcher16ScanSubdirectoryERK7QStringRK12SubdirectoryPNS_15ScanTransactionEb (clementine + 0x41dfa7)
#4  0x000055f07e1a8166 _ZN14LibraryWatcher12AddDirectoryERK9DirectoryRK5QListI12SubdirectoryE (clementine + 0x41f166)
#5  0x000055f07e395ea2 n/a (clementine + 0x60cea2)
#6  0x00007fa97f8c530a _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2d330a)
#7  0x00007fa97da63362 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15b362)
#8  0x00007fa97da6c819 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x164819)
#9  0x00007fa97f897a12 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2a5a12)
#10 0x00007fa97f89a276 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5 + 0x2a8276)
#11 0x00007fa97f8f0a84 n/a (libQt5Core.so.5 + 0x2fea84)
#12 0x00007fa97eb229be g_main_context_dispatch (libglib-2.0.so.0 + 0x6b9be)
#13 0x00007fa97eb24831 n/a (libglib-2.0.so.0 + 0x6d831)
#14 0x00007fa97eb24871 g_main_context_iteration (libglib-2.0.so.0 + 0x6d871)
#15 0x00007fa97f8f00d0 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2fe0d0)
#16 0x00007fa97f89657c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2a457c)
#17 0x00007fa97f6bae62 _ZN7QThread4execEv (libQt5Core.so.5 + 0xc8e62)
#18 0x00007fa97f6bbfd6 n/a (libQt5Core.so.5 + 0xc9fd6)
#19 0x00007fa97e5e846f start_thread (libpthread.so.0 + 0x946f)
#20 0x00007fa97cb843d3 __clone (libc.so.6 + 0xff3d3)

Still looking for additional logs.

[Houndie]

Just wanted to confirm that this is still an issue. v1.4 rc1, running sway under arch linux.

[CodedBinary]

Still an issue on arch/sway linux-hardened. I have never observed this occur without focusing on the window. It seems like after an hour or so of not focusing the window, the program crashes upon focusing. Using clementine 1.4.0rc1+347+gfc4cb6fc7-1 on the arch repos. Running clementine with --verbose still gives no more useful information. The following are the only error messages I saw.

03:26:21.508 ERROR logging:66(GLib)                 Source ID 12 was not found when attempting to remove it
03:48:19.193 ERROR unknown                          The Wayland connection broke. Did the Wayland compositor die?

[soulsource]

By chance I managed to get a better readable stack trace:

#0  0x00007f1ebf9aad21 in raise () at /lib64/libc.so.6
#1  0x00007f1ebf994536 in abort () at /lib64/libc.so.6
#2  0x000055cf3064d895 in logging::MessageHandler(QtMsgType, QMessageLogContext const&, QString const&)
    (type=QtFatalMsg, context=..., message=...)
    at /tmp/portage/media-sound/clementine-1.4.0_rc1/work/clementine-1.4.0rc1/ext/libclementine-common/core/logging.cpp:99
#3  0x00007f1ec1ca0178 in  () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1ec1ca0299 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1ec1c6cda8 in QMessageLogger::fatal(char const*, ...) const () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1eb9548971 in QtWaylandClient::QWaylandDisplay::checkError() const (this=0x55cf32868ba0)
    at /tmp/portage/dev-qt/qtwayland-5.15.2-r1/work/qtwayland-everywhere-src-5.15.2/src/client/qwaylanddisplay.cpp:209
#7  0x00007f1eb9548a1d in QtWaylandClient::QWaylandDisplay::flushRequests() (this=0x55cf32868ba0)
    at /tmp/portage/dev-qt/qtwayland-5.15.2-r1/work/qtwayland-everywhere-src-5.15.2/src/client/qwaylanddisplay.cpp:222
#8  0x00007f1eb958650e in QtWaylandClient::QWaylandDisplay::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x55cf32868ba0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7ffd12f228a0)
    at .moc/moc_qwaylanddisplay_p.cpp:77
#9  0x00007f1ec1e9a060 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f1ec1e9d7b6 in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f1ec1e9df2b in QSocketNotifier::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f1ec08f7193 in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
    at /usr/lib64/libQt5Widgets.so.5
#13 0x00007f1ec0900210 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#14 0x00007f1ec1e6511f in QCoreApplication::notifyInternal2(QObject*, QEvent*) ()
    at /usr/lib64/libQt5Core.so.5
#15 0x00007f1ec1ebd3fe in  () at /usr/lib64/libQt5Core.so.5
#16 0x00007f1ec19d7b79 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#17 0x00007f1ec19d8098 in  () at /usr/lib64/libglib-2.0.so.0
#18 0x00007f1ec19d812f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#19 0x00007f1ec1ebcae0 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /usr/lib64/libQt5Core.so.5
#20 0x00007f1ec1e63efb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /usr/lib64/libQt5Core.so.5
#21 0x00007f1ec1e6c1fd in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#22 0x000055cf300d7885 in main(int, char**) (argc=1, argv=0x7ffd12f234d8)
    at /tmp/portage/media-sound/clementine-1.4.0_rc1/work/clementine-1.4.0rc1/src/main.cpp:453

Edit: Updated the Backtrace with info from debug build.

[jbroadus]

@soulsource Are you also using Arch+Gnome?

[soulsource]

Nope, Gentoo and Sway. I'm planning to do a rebuild of Clementine with Debug Symbols btw., to get maybe more info out.

Also, it's probably not an issue solely by Clementine. qBittorrent seems to crash with a very similar callstack and a potential workaround.

Edit: I've updated my backtrace with line number information from a debug build. Sadly not really helpful, it seems it's indeed a bug in qt's Wayland library...

[soulsource]

I've been trying the "changing stuff and seeing what happens" approach to debug this issue further.

Since the crash is random, I can't guarantee anything, but it seems to me that https://github.com/qt/qtwayland/commit/16760280fd04cf70255bab16d9acecad254fdd8f fixes the issue.

Edit: Nevermind, it took a long time, but now it crashed again in QtWaylandClient::QWaylandDisplay::flushRequests

Edit 2: I've just found this: https://github.com/swaywm/sway/issues/4506 and https://bugreports.qt.io/browse/QTBUG-81504

[bam80]

Possibly related, Fedora and Gnome: https://github.com/KDAB/Charm/issues/364

[h-2]

I can confirm this crash. Running on Ubuntu 21.10 and Sway. Almost always when I switch the virtual desktop back to the desktop where Clementine is running, it crashes. It never crashes in the background and it never crashes when switching away -- only when switching back. This makes the application somewhat unusable.