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?)
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