segmentation fault in iscsid at startup

[Christoph Fiehe]

I am running Ubuntu 16.04 as VM in an OpenStack Newton environment using Ceph Jewel as storage backend and I get segfaults caused by iscsid at VM startup occasionally. I am using the Ubuntu Cloud Image which can be found here: https://cloud-images.ubuntu.com/xenial/current/

Please find attached the correspondig crash file. Unfortunately, I haven't found a way to reproduce the problem so far.

I will keep the crashed VM, so if you need more input, I will try to provide them.

[Christoph Fiehe (fiehe)]

$ apt-cache policy open-iscsi
open-iscsi:
  Installed: 2.0.873+git0.3b4b4500-14ubuntu3.1
  Candidate: 2.0.873+git0.3b4b4500-14ubuntu3.3
  Version table:
     2.0.873+git0.3b4b4500-14ubuntu3.3 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
 *** 2.0.873+git0.3b4b4500-14ubuntu3.1 100
        100 /var/lib/dpkg/status
     2.0.873+git0.3b4b4500-14ubuntu3 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

[Nish Aravamudan (nacc)]

@Jens:

That is surprising! Is it possible to get a backtrace from the .crash?

-Nish

[Brian Murray (brian-murray)]

I tried retracing it and didn't get anything useful out of it.

Stacktrace:
 #0 0x0000000000000000 in ?? ()
 No symbol table info available.
 #1 0x0000000000000000 in ?? ()
 No symbol table info available.
StacktraceTop:
 ?? ()
 ?? ()
ThreadStacktrace:
 .
 Thread 1 (LWP 1297):
 #0 0x0000000000000000 in ?? ()
 No symbol table info available.
 #1 0x0000000000000000 in ?? ()
 No symbol table info available.

[Christian Ehrhardt  (paelzer)]

Clear old bug s that had no updates, there was no further insight into the crashes reported here.
Neither how to reproduce nor by the check of the existing crash data.

Also there was no similar report coming up in last 6 months triage, so it seems an uncommon/special issue.

For now I'll set this to incomplete as it isn't actionable without further data.

[Launchpad Janitor (janitor)]

[Expired for open-iscsi (Ubuntu) because there has been no activity for 60 days.]