[Bug 1549330] [NEW] dhcpd 4.3.3-5ubuntu7 aborts after getting stuck on futex (bind 9.10 library interaction?)

[Graham Clinch]

Public bug reported:

dhcpd no longer stops when sent a SIGTERM, but appears to lock up on a
futex.

Final few lines of strace:

--
sendto(6, "<182>Feb 24 15:12:38 dhcpd[1414]"..., 58, MSG_NOSIGNAL, NULL, 0) = 58
write(2, "Server starting service.", 24Server starting service.) = 24
write(2, "\n", 1
)                       = 1
futex(0x7fe51a9000bc, FUTEX_WAIT_PRIVATE, 1, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGABRT {si_signo=SIGABRT, si_code=SI_USER, si_pid=1421, si_uid=0} ---
+++ killed by SIGABRT (core dumped) +++
--

This may be related to the move from bind 9.9 to 9.10 (see, eg
http://comments.gmane.org/gmane.network.dhcp.isc.dhcp-server/13689 where
Fedora report being unable to build dhcpd against 9.10)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: isc-dhcp-server 4.3.3-5ubuntu7
ProcVersionSignature: Ubuntu 4.4.0-7.22-generic 4.4.2
Uname: Linux 4.4.0-7-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
Date: Wed Feb 24 15:16:52 2016
ProcEnviron:
 LANGUAGE=en_GB:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: isc-dhcp
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.dhcp.dhcpd.conf: [modified]
mtime.conffile..etc.dhcp.dhcpd.conf: 2016-02-24T14:24:53.396201
upstart.isc-dhcp-server.override: manual

** Affects: isc-dhcp (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1549330

Title:
  dhcpd 4.3.3-5ubuntu7 aborts after getting stuck on futex (bind 9.10
  library interaction?)

Status in isc-dhcp package in Ubuntu:
  New

Bug description:
  dhcpd no longer stops when sent a SIGTERM, but appears to lock up on a
  futex.

  Final few lines of strace:

  --
  sendto(6, "<182>Feb 24 15:12:38 dhcpd[1414]"..., 58, MSG_NOSIGNAL, NULL, 0) = 58
  write(2, "Server starting service.", 24Server starting service.) = 24
  write(2, "\n", 1
  )                       = 1
  futex(0x7fe51a9000bc, FUTEX_WAIT_PRIVATE, 1, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  --- SIGABRT {si_signo=SIGABRT, si_code=SI_USER, si_pid=1421, si_uid=0} ---
  +++ killed by SIGABRT (core dumped) +++
  --

  This may be related to the move from bind 9.9 to 9.10 (see, eg
  http://comments.gmane.org/gmane.network.dhcp.isc.dhcp-server/13689
  where Fedora report being unable to build dhcpd against 9.10)

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: isc-dhcp-server 4.3.3-5ubuntu7
  ProcVersionSignature: Ubuntu 4.4.0-7.22-generic 4.4.2
  Uname: Linux 4.4.0-7-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Wed Feb 24 15:16:52 2016
  ProcEnviron:
   LANGUAGE=en_GB:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.dhcp.dhcpd.conf: [modified]
  mtime.conffile..etc.dhcp.dhcpd.conf: 2016-02-24T14:24:53.396201
  upstart.isc-dhcp-server.override: manual

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