Package: chrony
Version: 1.21z-5
Severity: normal

Hi,

Sometimes chronyd starts using 100% CPU time. This happens 1-5 seconds
after the /etc/ppp/ip-up.d/chrony script marked the sources online. In
this state chronyd does not accept any new chronyc commands (chronyc
just hangs indefinitely). In fact, using strace shows that chronyd is not
performing any system calls, so it is spinning in some internal
function.

The problem is not 100% reproducible but it seems to happen more
frequently with some time sources than with others. For example,  having
84.2.40.31 (ntp.t-online.hu) in chrony.conf show this problem rather
frequently now but AFAIR last week it mostly worked OK.

Stopping/restarting chronyd sometimes fixes the problem, sometimes it
starts spinning again.

I also observed the bug on servers running etch, but not frequently
(they were configured to use pool.ntp.org so it may depend on what
servers did they happen to use).

There is nothing interesting in syslog; a couple of times I tried
running "chronyd -d" but then I could never reproduce the bug - so the
bug may also be in the logging code and not related to the time
sources...

Gabor

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'testing'), (500, 'stable'), (101, 
'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.22.6
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages chrony depends on:
ii  libc6                     2.6.1-5        GNU C Library: Shared libraries
ii  libncurses5               5.6+20071006-1 Shared libraries for terminal hand
ii  libreadline5              5.2-3          GNU readline and history libraries
ii  ucf                       3.003          Update Configuration File: preserv

chrony recommends no packages.

-- no debconf information



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