Public bug reported:
I hit a case where dnsmasq was running at 100% cpu and not responding to
requests.
This is a freshly installed and updated trusty VM which has just been
dist-upgraded to utopic.
At boot/login it seemed OK, but then I bought up firefox and it couldn't get to
it's home page, top showed dnsmasq eating cpu.
strace'ing dnsmasq showed it doing:
select(8, [0 3 6 7], [], [6], NULL) = 1 (in [0])
recvmsg(0, 0x7ffffba98110, 0) = -1 ENOTSOCK (Socket operation on
non-socket)
accept(0, 0, NULL) = -1 ENOTSOCK (Socket operation on
non-socket)
select(8, [0 3 6 7], [], [6], NULL) = 1 (in [0])
constantly.
fd 8 is a pipe (not sure where to - back to another thread?)
This is the dnsmasq kicked off by a default network manager setup; not
changed any networking settings.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: dnsmasq-base 2.70-1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Apr 27 17:58:21 2014
InstallationDate: Installed on 2014-04-27 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140412)
SourcePackage: dnsmasq
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: dnsmasq (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug utopic
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https://bugs.launchpad.net/bugs/1313393
Title:
dnsmasq lockup at 100% cpu
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