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[Bug 1509081] Re: nano segfaults as root after upgrade to 15.10

 

Hello reedy, or anyone else affected,

Accepted nano into wily-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/nano/2.4.2-1ubuntu0.1
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: nano (Ubuntu Wily)
       Status: In Progress => Fix Committed

** Tags added: verification-needed

-- 
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https://bugs.launchpad.net/bugs/1509081

Title:
  nano segfaults as root after upgrade to 15.10

Status in nano package in Ubuntu:
  Fix Released
Status in nano source package in Wily:
  Fix Committed

Bug description:
  [Impact]

  On systems with a long hostname, nano either segfaults or refuses to
  work properly.

  [Test Case]
  1- set a long hostname with "hostname thisisareallyreallyreallylonghostname"
  2- try and edit a file: "nano /etc/hosts"
  3- make sure there is no segfault, or error in nano window: "Couldn't determine host name..."

  [Regression Potential]

  Patch is quite simple an obvious. A regression would mean lock files
  wouldn't work properly.

  
  ----

  
  Original description:

  Description:	Ubuntu 15.10
  Release:	15.10

  nano:
    Installed: 2.4.2-1
    Candidate: 2.4.2-1
    Version table:
   *** 2.4.2-1 0
          500 http://mirror.bytemark.co.uk/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

  After upgrading Ubuntu 15.04 to 15.10, when I run nano as root on a
  file it just segfaults. I'm not having this problem on other
  15.04->15.10 upgrades

  strace is https://p.defau.lt/?q7xGwt3HoqB74xTawUUHDA
  catchsegv is https://p.defau.lt/?0SPQY_bDj6F6j1ZKeToQoA

  Under gdb with nano-dbgsym installed, it gives

  #0  main (argc=2, argv=0x7fffffffe688) at ../../src/nano.c:2768

  If I run it as sudo nano filename.txt, it gives an error as below
  rather than segfaulting

  [ Couldn't determine hostname for lock file: File name too long ]

  Both my user and root have the same locale settings. I've tried
  regenerating the locales

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References