Your message dated Sun, 16 Jun 2013 13:19:19 +0000
with message-id <e1uocrx-000408...@franck.debian.org>
and subject line Bug#708180: fixed in libnet-server-perl 2.007-2
has caused the Debian Bug report #708180,
regarding applications die() because of SIGCHLD vs. SIGCLD confusion
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)
--
708180: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=708180
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: libnet-server-perl
Version: 2.006-1
Severity: grave
Hi,
I have a starman application that regularly dies under load with a backtrace
like:
Message: Can't use string ("") as a subroutine ref while "strict refs" in
use at /usr/share/perl5/Net/Server/SIG.pm line 72, <$read> line 2002.
at /usr/share/perl5/Net/Server/SIG.pm line 72
Net::Server::SIG::check_sigs() called at
/usr/share/perl5/Net/Server/PreForkSimple.pm line 337
Net::Server::PreForkSimple::close_children('Starman::Server=HASH(0x84e7a8)')
called at /usr/share/perl5/Net/Server.pm line 735
Net::Server::server_close('Starman::Server=HASH(0x84e7a8)') called at
/usr/share/perl5/Starman/Server.pm line 124
(...)
Some debugging shows that the problem is that several Net::Server modules
(e.g. Net::Server::PreforkSimple) tries to trap signals with Net::Server::SIG
using “CHLD” as the signal name. Net::Server::SIG in turn adds a signal handler
like this:
$SIG{$sig} = sub{ $Net::Server::SIG::_SIG{$_[0]} = 1; };
However, when that sub is called, it is called with “CLD” as signal, not
“CHLD” (seemingly Perl has two names for this). This in turn confuses
check_sigs, which wants to do this with $sig set to “CLD”:
$_SIG_SUB{$sig}->($sig);
whereupon the crash happens.
I think the smallest fix around this is something like
$sig = 'CLD' if ($sig eq 'CHLD');
in the top of register_sig(), but I might be mistaken.
In any case, this makes Net::Server::PreforkSimple, and probably several others,
rather unusable, since they may crash at almost any time, and there is no simple
workaround that I can see. (Thus the RC severity.)
-- System Information:
Debian Release: 7.0
APT prefers stable
APT policy: (750, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.9.0+sesse01 (SMP w/16 CPU cores)
Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages libnet-server-perl depends on:
ii libio-multiplex-perl 1.13-1
ii libio-socket-inet6-perl 2.69-2
ii libnet-cidr-perl 0.15-1
ii libsocket6-perl 0.23-1+b2
ii perl 5.14.2-21
libnet-server-perl recommends no packages.
Versions of packages libnet-server-perl suggests:
ii libio-socket-ssl-perl 1.76-2
ii liblog-log4perl-perl 1.29-1
ii libnet-ssleay-perl 1.48-1+b1
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: libnet-server-perl
Source-Version: 2.007-2
We believe that the bug you reported is fixed in the latest version of
libnet-server-perl, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 708...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Xavier Guimard <x.guim...@free.fr> (supplier of updated libnet-server-perl
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Sun, 16 Jun 2013 08:20:33 +0200
Source: libnet-server-perl
Binary: libnet-server-perl
Architecture: source all
Version: 2.007-2
Distribution: unstable
Urgency: low
Maintainer: Debian Perl Group <pkg-perl-maintain...@lists.alioth.debian.org>
Changed-By: Xavier Guimard <x.guim...@free.fr>
Description:
libnet-server-perl - extensible, general perl server engine
Closes: 708180
Changes:
libnet-server-perl (2.007-2) unstable; urgency=low
.
* Update spelling errors patch
* Fix "applications die() because of SIGCHLD vs. SIGCLD confusion"
using a patch (Closes: #708180)
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