Your message dated Mon, 02 Jul 2012 15:03:11 +0000
with message-id <e1sli9f-0003n3...@franck.debian.org>
and subject line Bug#679925: fixed in lua-event 0.4.1-2
has caused the Debian Bug report #679925,
regarding error not handled correctly, potential crash
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.)
--
679925: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=679925
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: lua-event
Version: 0.4.1-1
Severity: grave
Tags: upstream
When this binding is used with libevent 2.0 some errors are not handled
properly. An extract of the personal communication with the maintainer of the
binding follows, giving precise details on how this bug affects, for example,
the prosody jabber server.
-- 8< ---------------------------------------------------------
From: Matthew Wild
The problem is caused by a combination of Lua's exception handling
(setjmp+longjmp) and some new re-entrant checks added to libevent.
When an error occurs inside an event callback Lua (at the C level)
jumps outs of libevent and up to the last set error handler, which in
Prosody is before libevent is called. After logging the error Prosody
heads back into libevent, but unfortunately libevent2 has an internal
flag to prevent entering it twice. Because the error jumped right
back, this flag is never unset and libevent immediately returns
(thinking it is already running). This triggers a shutdown in Prosody.
The consequence is that given any other bug that causes an error to be
thrown in Prosody (there aren't many, but they exist) it's possible to
remotely shut down a Prosody server that is using libevent, even from
an unauthenticated connection.
-- 8< ---------------------------------------------------------
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages lua-event depends on:
ii libc6 2.13-33
ii libevent-2.0-5 2.0.19-stable-3
ii lua-socket 2.0.2-8
ii multiarch-support 2.13-33
lua-event recommends no packages.
lua-event suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: lua-event
Source-Version: 0.4.1-2
We believe that the bug you reported is fixed in the latest version of
lua-event, which is due to be installed in the Debian FTP archive:
liblua5.1-event-dev_0.4.1-2_all.deb
to main/l/lua-event/liblua5.1-event-dev_0.4.1-2_all.deb
liblua5.1-event0_0.4.1-2_all.deb
to main/l/lua-event/liblua5.1-event0_0.4.1-2_all.deb
lua-event-dev_0.4.1-2_amd64.deb
to main/l/lua-event/lua-event-dev_0.4.1-2_amd64.deb
lua-event_0.4.1-2.debian.tar.gz
to main/l/lua-event/lua-event_0.4.1-2.debian.tar.gz
lua-event_0.4.1-2.dsc
to main/l/lua-event/lua-event_0.4.1-2.dsc
lua-event_0.4.1-2_amd64.deb
to main/l/lua-event/lua-event_0.4.1-2_amd64.deb
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 679...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Enrico Tassi <gareuselesi...@debian.org> (supplier of updated lua-event 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...@debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.8
Date: Mon, 02 Jul 2012 16:36:23 +0200
Source: lua-event
Binary: lua-event lua-event-dev liblua5.1-event0 liblua5.1-event-dev
Architecture: source amd64 all
Version: 0.4.1-2
Distribution: unstable
Urgency: low
Maintainer: Enrico Tassi <gareuselesi...@debian.org>
Changed-By: Enrico Tassi <gareuselesi...@debian.org>
Description:
liblua5.1-event-dev - Transitional package for lua-event-dev
liblua5.1-event0 - Transitional package for lua-event
lua-event - asynchronous event notification library for Lua
lua-event-dev - libevent development files for the Lua language
Closes: 679925
Changes:
lua-event (0.4.1-2) unstable; urgency=low
.
* Fix error handling with libevent2 (thanks Matthew Wild). Added patch
luaevent-catch-errors-1.patch (Closes: #679925)
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