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

[Vili Kosednar]

I can confirm this. Our production relies on this therefore this is very
urgent.

Netinstall loads the components, then tries to detect the disk and then
crashes.

This worked perfectly well yesterday afternoon.

Is there any workaround?

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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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