[Bug 1816876] Re: Ubuntu 16.04 amd64 netboot install fails with segfault

[Andrew Grasso]

*** This bug is a duplicate of bug 1816846 ***
    https://bugs.launchpad.net/bugs/1816846

This appears to be fixed in the latest netboot installer published today
(2019-02-21 13:49 UTC).

http://archive.ubuntu.com/ubuntu/dists/xenial-updates/main/installer-
amd64/current/images/netboot/

Our tests on installers before that were seeing the segfaults, but
everything seems to be working again using the latest installer.

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https://bugs.launchpad.net/bugs/1816876

Title:
  Ubuntu 16.04 amd64 netboot install fails with segfault

Status in debian-installer package in Ubuntu:
  Confirmed

Bug description:
  It fails at around this stage:

  Feb 20 16:55:10 dev env[6826]: {"facility":7,"severity":1,"tag":"anna[8535]","time":"2019-02-20T05:00:00.000Z","hostname":"21:55:10","address":"10.10.128.247","family":"IPv4","port":39315,"size":76,"msg":"DEBUG: retrieving libc6-udeb 2.23-0ubuntu11\n"}
  Feb 20 16:55:10 dev env[6826]: {"facility":6,"severity":1,"tag":"anna[8535]","time":"2019-02-20T05:00:00.000Z","hostname":"21:55:10","address":"10.10.128.247","family":"IPv4","port":39315,"size":227,"msg":"2019-02-20 21:55:10 URL:http://us.archive.ubuntu.com/ubuntu/pool/main/g/glibc/libc6-udeb_2.23-0ubuntu11_amd64.udeb [1241450/1241450] -> \"/var/cache/anna/libc6-udeb_2.23-0ubuntu11_amd64.udeb\" [1]\n"}
  Feb 20 16:55:10 dev env[6826]: {"facility":6,"severity":1,"tag":"kernel","time":"2019-02-20T05:00:00.000Z","hostname":"21:55:10","address":"10.10.128.247","family":"IPv4","port":39315,"size":153,"msg":"[   59.710602] sh[8624]: segfault at 18 ip 00007f81bee488df sp 00007ffe26360300 error 4 in libc-2.23.so[7f81bee28000+1c0000]\n"}
  Feb 20 16:55:10 dev env[6826]: {"facility":6,"severity":1,"tag":"kernel","time":"2019-02-20T05:00:00.000Z","hostname":"21:55:10","address":"10.10.128.247","family":"IPv4","port":39315,"size":153,"msg":"[   59.711516] sh[8625]: segfault at 18 ip 00007f9a571818df sp 00007ffe28a8c690 error 4 in libc-2.23.so[7f9a57161000+1c0000]\n"}

  On screen, I see that "Loading libc6-udeb failed for unknown reasons".

  This has previously worked fine before a few weeks ago.

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