clementine crashed with SIGSEGV in gst_element_set_state()

[Chris Guiver]

Clementine has been crashing many times a day in recent day(s).

I tried submitting `ubuntu-bug` each time, but no offers to login to browser were offered (possibly because my stack was outdated as it had started nagging me to).

It usually crashes after finishing a song/track & moving to the next track.

There will/could be a number of entries in it's playlists that no longer exist (one of my playlists has no files present, that directory was erased; but I can 'play' that playlist and it just skips from one to the other endlessly without crashing which is expected behavior)

ProblemType: Crash
DistroRelease: Ubuntu 20.04
Package: clementine 1.3.1+git609-g623a53681+dfsg-1build1
ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
Uname: Linux 5.4.0-12-generic x86_64
ApportVersion: 2.20.11-0ubuntu16
Architecture: amd64
CrashCounter: 1
CurrentDesktop: LXQt
Date: Sun Feb 9 11:37:00 2020
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/clementine
ExecutableTimestamp: 1541880273
InstallationDate: Installed on 2017-11-16 (814 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
ProcCmdline: /usr/bin/clementine
ProcCwd: /home/guiverc
SegvAnalysis:
 Segfault happened at: 0x7fc119bb3734 <gst_element_set_state+36>: cmp %rax,(%rbx)
 PC (0x7fc119bb3734) ok
 source "%rax" ok
 destination "(%rbx)" (0xffffffff) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: clementine
StacktraceTop:
 gst_element_set_state () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
 QObjectPrivate::signalIndex(char const*, QMetaObject const**) const () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 ()
 QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
Title: clementine crashed with SIGSEGV in gst_element_set_state()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo vboxusers
separator:

[Apport retracing service (apport)]

StacktraceTop:
 gst_element_set_state (element=0x7fc1080462b0, state=GST_STATE_NULL) at gstelement.c:2802
 QObjectPrivate::signalIndex (this=0x7fc1080462b0, signalName=0x7fc0f4018410 "\243", meta=0x0) at kernel/qobject.cpp:3869
 ?? ()
 QCoreApplicationPrivate::sendThroughApplicationEventFilters (event=<optimized out>, receiver=<optimized out>, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:170
 QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=<optimized out>, receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1181

[Eduardo Barretto (ebarretto)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.