[Bug 1536649] Re: Installer can not handle more than 60 OSA devices (triples)

[Launchpad Bug Tracker]

This bug was fixed in the package s390-netdevice - 0.0.40ubuntu1

---------------
s390-netdevice (0.0.40ubuntu1) xenial; urgency=low

  * Merge from Debian unstable LP: #1536649.  Remaining changes:
    - Default to level2 qeth mode by default.

s390-netdevice (0.0.40) unstable; urgency=medium

  [ Colin Watson ]
  * Use HTTPS for Vcs-* URLs, and link to cgit rather than gitweb.

  [ Hendrik Brueckner ]
  * qeth: substitute layer and port number in qeth/confirm template
    (Closes: #813121)
  * netdevice: correct stack corruption due to numerous devices
    (Closes: #813089)

 -- Dimitri John Ledkov <xnox at ubuntu.com>  Sun, 07 Feb 2016 05:16:30
+0000

** Changed in: s390-netdevice (Ubuntu)
       Status: Fix Committed => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to s390-netdevice in Ubuntu.
https://bugs.launchpad.net/bugs/1536649

Title:
  Installer can not handle more than 60 OSA devices (triples)

Status in debian-installer package in Ubuntu:
  New
Status in s390-netdevice package in Ubuntu:
  Fix Released

Bug description:
  == Comment: #0 - Thorsten Diehl <thorsten.diehl at de.ibm.com> - 2016-01-21 06:26:08 ==
  Ubuntu installer on z Systems as of 2016-01-20 with kernel 4.3.0-6-generic throws a user process fault, when trying to offer a huge list of OSA network adaptor triples:
  [    2.657035] dasd_mod: module verification failed: signature and/or required k
  ey missing - tainting kernel
  [    2.743908] qeth: loading core functions
  "
  "Starting system log daemon: syslogd, klogd.
  "
  "[1;24r[4l(B)0[m[1;24r[H[J[24;1H[m                                               
                                  
  "
  "Configure the network device
  ----------------------------
  Please choose the type of your primary network interface that you will need for
  installing the Debian system (via NFS or HTTP). Only the listed devices are 
  supported.
  Network device type:
    1: ctc: Channel to Channel (CTC) or ESCON connection,    
    2: qeth: OSA-Express in QDIO mode / HiperSockets,    
    3: iucv: Inter-User Communication Vehicle - available for VM guests only,    
    4: virtio: KVM VirtIO,    
  Prompt: '?' for help> 
  "
  "2
  !! ERROR: Installation step failed
  An installation step failed. You can try to run the failing item again from the
  menu, or skip it and choose something else. The failing step is: Configure the 
  network device
  [Press enter to continue] 
  "
  "[   31.165584] User process fault: interruption code 0010 ilc:2 in libc.so.6[3ff
  91f80000+114000]
  [   31.165591] failing address: 000003fffc900000 TEID: 000003fffc900400
  [   31.165592] Fault in primary space mode while using user ASCE.
  [   31.165594] AS:000000007896c1c7 R3:000000007d368007 S:0000000000000020 
  "

  In the above case I had more than 150 OSA triples, which is for sure very unusual. I could not determine the exact number, at which the problem starts to occur. The installer, however, is able to show around 100 OSA triples, but, when selecting one of them, at this point the user process fault occurs, too.
  With 64 triples it worked.

  I suggest to define the following restriction for the "z Systems"
  specific section of the "Release Notes" document:

  Problem: Installer can not select out of more than 60 OSA network devices (triples)
  Circumvention: Reduce the number of visible OSA network devices, e.g. by using the cio_ignore kernel parameter.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1536649/+subscriptions