It seems that gvfsd-dav crashed. I played with it when connecting to a dav created by enabling file sharing on the local machine. I turned it off, it must have crashed after that, but I only got the report now.
ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gvfs-backends 1.34.1-1ubuntu4
ProcVersionSignature: Ubuntu 4.13.0-19.22-generic 4.13.13
Uname: Linux 4.13.0-19-generic x86_64
ApportVersion: 2.20.8-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat Dec 9 01:11:06 2017
ExecutablePath: /usr/lib/gvfs/gvfsd-dav
InstallationDate: Installed on 2017-12-08 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
ProcCmdline: /usr/lib/gvfs/gvfsd-dav --spawner :1.15 /org/gtk/gvfs/exec_spaw/12
SegvAnalysis:
Segfault happened at: 0x560529675aad: mov (%rax),%rax
PC (0x560529675aad) ok
source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gvfs
StacktraceTop:
?? ()
g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gvfsd-dav crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: Upgraded to bionic on 2017-12-08 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
There did not seem to be anything private in the coredump, hence marking as public.