[Bug 1446448] Re: ssh-agent terminates

[Andrej Ricnik]

Thanks Seth, I doubt that keychain is (even in part) responsible for
this behaviour; I'll try to confirm Tuesday - after the long weekend -
when I'm back at work.

Thanks for responding Robie.

I apologise - was on a rampage because the other bug that I'm sitting on
(not as the original reporter, but as an impatient watcher) has been
open since 2012 ... and it bites many people, anyone who has a)
resonably frequent changes to network interfaces and b) runs an iSCSI
connected SAN.

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https://bugs.launchpad.net/bugs/1446448

Title:
  ssh-agent terminates

Status in openssh package in Ubuntu:
  Confirmed

Bug description:
  I have set-up password less ssh connectivity for my workstation.  ssh-
  agent gets started via keychain when fluxbox boots.

  When I use ssh to connect to a server, and then use scp to shuffle a
  file from that server to my workstation the ssh-agent on my
  workstation dies after the file was transferred.

  This has started happening after the upgrade  from 12.04 to 14.04.

  I have wrapped strace into the fluxbox startup to keep an eye on ssh-
  agent (I initially didn't see a pattern to the sudden death), here's
  an example of the breakdown post transfer.

  select(4, [3], [], NULL, NULL)          = 1 (in [3])
  accept(3, {sa_family=AF_LOCAL, NULL}, [2]) = 4
  getsockopt(4, SOL_SOCKET, SO_PEERCRED, {pid=21130, uid=1000, gid=1000}, [12]) = 0
  getuid()                                = 1000
  fcntl(4, F_GETFL)                       = 0x2 (flags O_RDWR)
  fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
  select(5, [3 4], [], NULL, NULL)        = 1 (in [4])
  read(4, "\0\0\0\1\v", 1024)             = 5
  select(5, [3 4], [4], NULL, NULL)       = 1 (out [4])
  write(4, "\0\0\1<\f\0\0\0\1\0\0\1\27\0\0\0\7ssh-rsa\0\0\0\3\1\0\1\0"..., 320) = 320
  select(5, [3 4], [], NULL, NULL)        = 1 (in [4])
  read(4, "", 1024)                       = 0
  close(4)                                = 0
  select(4, [3], [], NULL, NULL)          = 1 (in [3])
  accept(3, {sa_family=AF_LOCAL, NULL}, [2]) = 4
  getsockopt(4, SOL_SOCKET, SO_PEERCRED, {pid=21284, uid=1000, gid=1000}, [12]) = 0
  getuid()                                = 1000
  fcntl(4, F_GETFL)                       = 0x2 (flags O_RDWR)
  fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
  select(5, [3 4], [], NULL, NULL)        = 1 (in [4])
  read(4, "", 1024)                       = 0
  close(4)                                = 0
  select(4, [3], [], NULL, NULL)          = ? ERESTARTNOHAND (To be restarted if no handler)
  --- SIGTERM {si_signo=SIGTERM, si_code=SI_USER, si_pid=21284, si_uid=0} ---
  unlink("/tmp/ssh-DEwJJTGLUETC/agent.19556") = 0
  rmdir("/tmp/ssh-DEwJJTGLUETC")          = 0
  close(-1)                               = -1 EBADF (Bad file descriptor)
  exit_group(2)                           = ?
  +++ exited with 2 +++


  1) lsb_release -rd
  Description:    Ubuntu 14.04.2 LTS
  Release:        14.04

  
  2) apt-cache policy openssh-client
  openssh-client:
    Installed: 1:6.6p1-2ubuntu2
    Candidate: 1:6.6p1-2ubuntu2
    Version table:
   *** 1:6.6p1-2ubuntu2 0
          500 http://nz.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1:6.6p1-2ubuntu1 0
          500 http://nz.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

  3) I expect ssh-agent to carry on running as it did in previous
  releases.

  4) It dies when connecting back from a machine I ssh into to my
  workstation.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: openssh-client 1:6.6p1-2ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-49.81-generic 3.13.11-ckt17
  Uname: Linux 3.13.0-49-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  Date: Tue Apr 21 15:28:02 2015
  InstallationDate: Installed on 2015-02-03 (77 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  RelatedPackageVersions:
   ssh-askpass       N/A
   libpam-ssh        2.0-1
   keychain          2.7.1-1
   ssh-askpass-gnome 1:6.6p1-2ubuntu2
  SSHClientVersion: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2, OpenSSL 1.0.1f 6 Jan 2014
  SourcePackage: openssh
  UpgradeStatus: No upgrade log present (probably fresh install)
  upstart.ssh-agent.log: ssh-agent stop/pre-start, process 1973

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