thunar crashed with SIGSEGV in g_mutex_lock()

[David Kastrup]

Another crash while doing basic file viewing with several Thunar windows open.

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: thunar 1.8.9-1
ProcVersionSignature: Ubuntu 5.2.0-15.16-lowlatency 5.2.9
Uname: Linux 5.2.0-15-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Sep 9 22:15:58 2019
ExecutablePath: /usr/bin/thunar
InstallationDate: Installed on 2011-10-14 (2887 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
ProcCmdline: Thunar --sm-client-id 2aa52746e-14dd-4b9b-9ec7-f65c0e3b707f --daemon
SegvAnalysis:
 Segfault happened at: 0x7fe88c8b2bf9 <g_mutex_lock+9>: lock xadd %eax,(%rdi)
 PC (0x7fe88c8b2bf9) ok
 source "%eax" ok
 destination "(%rdi)" (0x00000030) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: thunar
StacktraceTop:
 g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 ()
 () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
Title: thunar crashed with SIGSEGV in g_mutex_lock()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin audio cdrom dialout fax floppy lpadmin lxd plugdev pulse-access sambashare
separator:

[Apport retracing service (apport)]

StacktraceTop:
 g_mutex_lock () from /tmp/apport_sandbox_n6d430qb/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 thunar_thumbnailer_queue_async_reply (proxy=0x55a101bc6e20, res=0x55a103439640, user_data=user_data@entry=0x55a1029648c0) at thunar-thumbnailer.c:344
 g_task_return_now (task=0x55a103439640) at ../../../gio/gtask.c:1212
 g_task_return (task=0x55a103439640, type=<optimized out>) at ../../../gio/gtask.c:1281
 reply_cb (connection=<optimized out>, res=<optimized out>, user_data=user_data@entry=0x55a103439640) at ../../../gio/gdbusproxy.c:2618

[David Kastrup (dak)]

Happened to me right now without any Thunar window open (I think), just with it providing XFCE4 desktop icons.