[Pkg-inetutils-maint] Bug#347646: marked as done (inetutils-inetd: Uses 100% CPU since last upgrade)

Debian Bug Tracking System owner at bugs.debian.org
Thu Jan 12 00:18:34 UTC 2006 

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and subject line Bug#347646: inetutils-inetd: Uses 100% CPU since last upgrade
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From: Mikael Nilsson <mini at nada.kth.se>
To: Debian Bug Tracking System <submit at bugs.debian.org>
Subject: inetutils-inetd: Uses 100% CPU since last upgrade
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Package: inetutils-inetd
Version: 2:1.4.3+20051212-2
Severity: normal


Since the last upgrade a few days ago, inetd uses 100% CPU. strace -p `pidof
inetd` shows:

rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0

etc.

the same with ltrace:
__xpg_sigpause(0, 0xbfa7a52c, 1, 0x804e380, 0) = -1

Please let me know how I should help debug this.

/Mikael

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (200, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-686
Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8)

Versions of packages inetutils-inetd depends on:
ii  libc6                         2.3.5-11   GNU C Library: Shared libraries an
ii  lsb-base                      3.0-14     Linux Standard Base 3.0 init scrip
ii  netbase                       4.24       Basic TCP/IP networking system
ii  syslog-ng [system-log-daemon] 1.6.9-1    Next generation logging daemon
ii  zlib1g                        1:1.2.3-9  compression library - runtime

inetutils-inetd recommends no packages.

-- no debconf information

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>From guillem at master.debian.org Wed Jan 11 16:11:53 2006
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Date: Thu, 12 Jan 2006 02:11:59 +0200
From: Guillem Jover <guillem at debian.org>
To: Mikael Nilsson <mini at nada.kth.se>, 347646-done at bugs.debian.org
Subject: Re: Bug#347646: inetutils-inetd: Uses 100% CPU since last upgrade
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Hi,

On Wed, Jan 11, 2006 at 09:43:07PM +0100, Mikael Nilsson wrote:
> Package: inetutils-inetd
> Version: 2:1.4.3+20051212-2
> Severity: normal

> Since the last upgrade a few days ago, inetd uses 100% CPU. strace -p `pidof
> inetd` shows:
> 
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> rt_sigprocmask(SIG_BLOCK, NULL, [HUP ALRM CHLD], 8) = 0
> 
> etc.

> the same with ltrace:
> __xpg_sigpause(0, 0xbfa7a52c, 1, 0x804e380, 0) = -1
> 
> Please let me know how I should help debug this.

Yeah, I fixed the pid creation, and this started happening, but only
spotted the problem after uploading, and fixed it yesterday. I didn't
have access to mail until after uploading the fixed version and could
not see the bug report (otherwise I'd have closed it in the changelog)
so here it goes the relevant entry:

inetutils (2:1.4.3+20051212-3) unstable; urgency=low

  * Fix busy waiting in inetd when there are no sockets to listen.
    - debian/patches/30_inetd_busy_wait.patch: New file.
  * Restore a patch hunk that got lost when syncing with latest upstream
    release, which would otherwise make the code segfault on 64 bit arches.
    Although the code is not used by any produced package. (Closes: #347313)
    Thanks to Dann Frazier <dannf at hp.com>.
  * Add automake1.4 to Build-Conflicts. (Closes: #347312)
  * Swap where inetutils-tools Provides net-tools, from linux to !linux.
    Thanks to Aurelien Jarno <aurel32 at debian.org>.
  * Enable installation of logrotate conffiles again.

 -- Guillem Jover <guillem at debian.org>  Wed, 11 Jan 2006 23:12:06 +0200

Thus closing this bug. The package is in incoming, should reach you soon...

regards,
guillem

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