Change in osmo-msc[master]: fix Classmark Update without VLR subscriber

[Neels Hofmeyr]

Hello Jenkins Builder, 

I'd like you to reexamine a change. Please visit

    https://gerrit.osmocom.org/11016

to look at the new patch set (#2).

Change subject: fix Classmark Update without VLR subscriber
......................................................................

fix Classmark Update without VLR subscriber

This recent patch moves Classmark storage to the VLR subscriber, and introduced
a segfault when a Classmark Update is received during IMSI detach:

commit 986fe7ed18580775bed91399a1f02eae60bda251
change-id I27081bf6e9e017923b2d02607f7ea06beddad82a
Mon Sep 17 01:12:13 2018 +0200
"store classmark in vlr_subscr, not conn"

It assumed that we would never accept any Classmark Update messages unless we
also have a valid subscriber for it. Well, that is proven wrong by the
ttcn3-msc-test TC_imsi_detach_by_imsi(), which brings osmo-msc to its knees.

Fix: in case of no valid vlr_subscr being present, store Classmark in the conn
temporarily, and copy any received Classmark to VLR subscriber as soon as it
gets associated with the conn (if at all).

Change-Id: Ib2a2ae6bf86e8f29fc6751a8b5cdb7187cd70290
---
M include/osmocom/msc/gsm_data.h
M src/libmsc/gsm_04_08.c
M src/libmsc/osmo_msc.c
3 files changed, 31 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/16/11016/2
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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ib2a2ae6bf86e8f29fc6751a8b5cdb7187cd70290
Gerrit-Change-Number: 11016
Gerrit-PatchSet: 2
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder (1000002)
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