[Bug 881862] Re: svn up Segmentation Fault with sasl enabled repositories

[Evan Broder]

** Also affects: subversion (Ubuntu Oneiric)
   Importance: Undecided
       Status: New

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Title:
  svn up Segmentation Fault with sasl enabled repositories

Status in “subversion” package in Ubuntu:
  Fix Released
Status in “subversion” source package in Oneiric:
  New
Status in “subversion” package in Debian:
  Fix Released

Bug description:
  [impact]
  svn crashes often when doing basic commands (checkout, update, ...) on repositories which use sasl authentification served with svnserve

  [Development Fix]
  the issue was fixed in 1.6.17dfsg-2ubuntu1 avaiable in precise by picking a patch from upstream vcs

  [Stable Fix] 
  the same patch applies to the version in oneiric, according to upstream vcs no further corrections for this issue where applied between the version in oneiric and precise.

  [Test Case]
  create a repository with sasl authentification.
  svnadm create repo
  relevant contents of svnserve.conf:
  [general]
  anon-access = none
  realm = test
  [sasl]
  use-sasl = true
  min-encryption = 128
  max-encryption = 256
  pwcheck_method: auxprop
  auxprop_plugin: sasldb
  mech_list: DIGEST-MD5

  create sasl account:
  sudo saslpasswd2 -c -u test username

  start svnserve:
  sudo svnserve --daemon --root /path/to/repo

  checkout and update:
  svn co svn://repo wc
  cd wc
  svn up

  expected result:
  successful checkout and update

  result:
  sometimes segmentation faults.
  if it does not crash run the checkout under valgrind and one will see many "Invalid read of size X" errors.

  the patch fixes the crashes and the valgrind errors.

  [regression impact]
  low, the patch is small and simple. It has been released in precise and debian since a while with no regressions.
  svn has a quite large testsuite which stillsucceeds with the patch.

  original report:
  after upgrade to ubuntu 11.10 svn up is segfaulting after updating local copy (svn up)

  in one case the working copy was left in unclean state (some files
  locked) after svn up

  everything was working fine in ubuntu 10.04

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: subversion 1.6.12dfsg-4ubuntu5
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  Date: Wed Oct 26 10:30:52 2011
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  SourcePackage: subversion
  UpgradeStatus: Upgraded to oneiric on 2011-10-24 (1 days ago)

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