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[vaishnavi <vaishnavi@xxxxxxxxxxxxxxxxxx>]

** Package changed: ubuntu => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1555264

Title:
  Ubuntu16.04 netboot installation fails with illegal instruction error

Status in linux package in Ubuntu:
  New

Bug description:
  Problem Description
  ========================
   Tried installing ubuntu16.04 using netboot method and it fails with error 'Illegal instruction'

  >  Tried installing ubuntu16.04 using netboot method - yupg1 guest.
  >  Added DHCP entry in KTE for the yupg1 guest.
  >  Able to select Langauage and Location from installer menu.
  >  It prompts for 'configure network window' as below

  
     ??????????????????????? [!] Configure the network ???????????????????????
     ?                                                                       ?
     ? Please enter the hostname for this system.                            ?
     ?                                                                       ?
     ? The hostname is a single word that identifies your system to the      ?
     ? network. If you don't know what your hostname should be, consult your ?
     ? network administrator. If you are setting up your own home network,   ?
     ? you can make something up here.                                       ?
     ?                                                                       ?
     ? Hostname:                                                             ?
     ?                                                                       ?
     ? yupg1________________________________________________________________ ?
     ?                                                                       ?
     ?     <Go Back>                                          <Continue>     ?
     ?                                                                       ?
     ?????????????????????????????????????????????????????????????????????????

  
  > After selecting continue button, it thows message as 'Illegal instruction'

  Illegal instruction

  > Unable to proceed further and it continously throws above message

  Host Details:
  ---------------
    KVM BUILD LEVEL:                       GA3 SP1 build 55

  == Comment: #8 - Vaishnavi Bhat <vaish123@xxxxxxxxxx> -  ==
  When I started the installation and reached the point to enter the hostname, the installation hanged with 'Illegal instruction'. At this point I could not collect any debug logs. I tried installation with multipath enabled and could reach a point where I could collect the debug logs. I did not see ''Illegal instruction' on my console this time but it was recorded in the logs. 

  Mar  8 16:40:09 main-menu[209]: DEBUG: resolver (libc6-udeb): package doesn't exist (ignored)
  Mar  8 16:40:09 main-menu[209]: INFO: Menu item 'network-preseed' selected
  Mar  8 16:40:09 kernel: [   43.752359] wget[1357]: unhandled signal 4 at 000000003159de5c nip 000000003159de5c lr 000000003159de48 code 30001
  Mar  8 16:40:09 kernel: [   43.754753] wget[1362]: unhandled signal 4 at 00000000369fde5c nip 00000000369fde5c lr 00000000369fde48 code 30001
  Mar  8 16:40:16 main-menu[209]: (process:1340): expr: warning: '^.*\[[:a-fA-F0-9]*\]': using '^' as the first character
  Mar  8 16:40:16 main-menu[209]: (process:1340): of a basic regular expression is not portable; it is ignored
  Mar  8 16:40:16 main-menu[209]: (process:1340): Illegal instruction
  Mar  8 16:40:16 main-menu[209]: (process:1340): Illegal instruction
  Mar  8 16:40:16 main-menu[209]: WARNING **: Configuring 'network-preseed' failed with error code 1
  Mar  8 16:40:16 main-menu[209]: WARNING **: Menu item 'network-preseed' failed.
  Mar  8 16:40:20 main-menu[209]: INFO: Modifying debconf priority limit from 'high' to 'medium'
  Mar  8 16:40:20 debconf: Setting debconf/priority to medium
  Mar  8 16:40:20 main-menu[209]: DEBUG: resolver (libc6-udeb): package doesn't exist (ignored)
  Mar  8 16:40:28 main-menu[209]: INFO: Menu item 'di-utils-shell' selected
  Mar  8 16:41:56 main-menu[209]: DEBUG: resolver (libc6-udeb): package doesn't exist (ignored)
  Mar  8 16:42:08 main-menu[209]: INFO: Menu item 'save-logs' selected

  == Comment: #9 - INDIRA P. JOGA <indira.priya@xxxxxxxxxx> -  ==
  Hi,

  I am able to recreate the issue on 2 different host machines with 2
  different networks

  Raykvm - Travis3En network on host
  Yupkvm - Austin network on host.

  Tried installing ubunu16.04 using netboot on both kvm hosts and it
  failed with same error 'Illegal Instruction"

  Regards,
  Indira

  == Comment: #10 - Richard M. Scheller <rschelle@xxxxxxxxxx> -  ==
  I was able to get to a shell in the installer so that I could look for broken binaries that might cause a SIGILL.  I found that /usr/bin/wget is incorrectly linked as a shared object instead of an executable.

  I verified from the installer command line that "wget" does, in fact,
  die with SIGILL:

  /usr/bin # ./wget
  Illegal instruction
  /usr/bin #

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