Bug#946158: lightdm-gtk-greeter or libcairo2 segfault immediately after submitting password, unlocking session

[dinar qurbanov <qdinar@gmail.com>]

package: lightdm-gtk-greeter
version: 2.0.6-1

lightdm-gtk-greeter or libcairo2 segfault immediately after submitting
password, unlocking session. (i do not understand the segfault
message).

part of syslog:

Dec  4 14:28:08 localhost lightdm[9304]: Error getting user list from
org.freedesktop.Accounts:
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.freedesktop.Accounts was not provided by any .service files
Dec  4 14:28:08 localhost kernel: [ 5707.165413]
lightdm-gtk-gre[9162]: segfault at 8 ip b73a92e4 sp bfa6f59c error 4
in libcairo.so.2.11600.0[b733d000+dd000]
Dec  4 14:28:08 localhost kernel: [ 5707.165431] Code: 51 14 89 54 24
04 e9 1b e5 fa ff 8d 76 00 31 c0 c3 8d 74 26 00 90 89 d0 c3 8d b4 26
00 00 00 00 8d b6 00 00 00 00 8b 44 24 04 <8b> 40 08 c3 8d b4 26 00 00
00 00 90 8b 44 24 04 8b 40 0c c3 8d b4
Dec  4 14:28:08 localhost systemd[1]: session-c2.scope: Succeeded.
Dec  4 14:28:18 localhost systemd[1]: Stopping User Manager for UID 115...

should i report a bug for a single segfault? i do not know how to
reproduce it. i think it may be for hdd surface errors. if so, it is
not really a bug. i think maybe somebody can find appropriate source
code, check it, and find a bug. so i report.

using debian 10 with xfce.