[Bug 1085957] Re: NSCD crashes with SIGABRT when using LDAP authentication

[Valentijn Sessink]

On my 64 bit system nscd still seems to work. Have you tried to invalidate the nscd caches?
nscd -i group; nscd -i passwd; nscd -i services

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Title:
  NSCD crashes with SIGABRT when using LDAP authentication

Status in “eglibc” package in Ubuntu:
  Confirmed

Bug description:
  I'm running 64-bit Ubuntu Desktop 12.04.1, with kernel version
  3.2.0-32-generic.

  I have configured PAM LDAP authentication for several clients and this
  problem is reproducible on each client system.

  If I'm not running the name service cache daemon (nscd), I'm getting
  the following errors when I attempt to start either 'acroread' or
  'thunderbird':

  (acroread:11520): GLib-WARNING **: getpwuid_r(): failed due to unknown user id (537)
  (thunderbird:11298): GLib-WARNING **: getpwuid_r(): failed due to: Connection refused.

  The solution so far has been to always keep the nscd service running.

  However, after a recent update, nscd is now crashing each time it is
  started.

  Here is the output when running "strace nscd -d -d -d":

  getrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=4*1024}) = 0
  epoll_create(100)                       = 13
  epoll_ctl(13, EPOLL_CTL_ADD, 12, {EPOLLRDNORM, {u32=12, u64=12}}) = 0
  epoll_ctl(13, EPOLL_CTL_ADD, 3, {EPOLLRDNORM, {u32=3, u64=3}}) = 0
  epoll_wait(13, Mon 03 Dec 2012 02:02:00 PM CET - 11145: pruning passwd cache; time 1354539720
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "0", timeout 1354538746
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "0", timeout 1354510222
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "0", timeout 1354280394
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "1000000", timeout 1354279029
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "120", timeout 1354274881
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "www-data", timeout 1354280394
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "perot", timeout 1354538746
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: Reloading "perot" in password cache!
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "perot", timeout 1354513978
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "102", timeout 1354274882
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "537", timeout 1354536515
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "sshd", timeout 1354520294
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "537", timeout 1354513978
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "sshd", timeout 1354281436
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "2", timeout 1354253870
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "webuser", timeout 1354253813
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "111", timeout 1354274889
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "103", timeout 1354274888
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYNAME entry "testuser", timeout 1354279029
  Mon 03 Dec 2012 02:02:00 PM CET - 11145: considering GETPWBYUID entry "h", timeout 1354253781
  nscd: pwdcache.c:531: readdpwbyuid: Assertion `*(db->data + he->key) != '\0' && *ep == '\0'' failed.
   <unfinished ...>
  +++ killed by SIGABRT (core dumped) +++
  Aborted (core dumped)

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