Bug#595756: notify_email: segfaults with slow mail server
Hi, On 9/6/2010 3:02 PM, Sebastian Harl wrote: > Thanks for reporting this! Afaik, Florian already has a (rather > untested) patch available in Git. I'll look into that and prepare an > updated package (targeting Squeeze [through unstable]). This patch seems to fix the problem, collectd is running for one day on my system, no problem (previously collectd crashed several times a day). -- Regards, Manuel CISSE -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
Bug#595756: notify_email: segfaults with slow mail server
severity 595756 serious thanks Hi Manuel, On Mon, Sep 06, 2010 at 02:46:37PM +0200, Manuel CISSE wrote: > With a slow mail server, notify_email_notification() may be called > simultaneously by > 2 or more threads, leading to a crash in libesmtp (due to multiple calls to > smtp_start_session() on the same session). > > Also, if collectd is stopped when a notification is being dispatched, > notify_email_shutdown() destroys the session used by > notify_email_notification() > causing a segfault. Thanks for reporting this! Afaik, Florian already has a (rather untested) patch available in Git. I'll look into that and prepare an updated package (targeting Squeeze [through unstable]). Since segfaults in any plug-in will bring down the whole daemon process, this a) makes the plugin rather unusable and b) could cause data loss when having caching enabled in the "rrdtool" plugin. Thus, I've raised the severity to "serious". (It's perfectly fine, though, that you've used "normal" -- it's the maintainers job to change the severity if necessary ;-)) Cheers, Sebastian -- Sebastian "tokkee" Harl +++ GnuPG-ID: 0x8501C7FC +++ http://tokkee.org/ Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin signature.asc Description: Digital signature
Bug#595756: notify_email: segfaults with slow mail server
Package: collectd Version: 4.10.1-1 Severity: normal With a slow mail server, notify_email_notification() may be called simultaneously by 2 or more threads, leading to a crash in libesmtp (due to multiple calls to smtp_start_session() on the same session). Also, if collectd is stopped when a notification is being dispatched, notify_email_shutdown() destroys the session used by notify_email_notification() causing a segfault. -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages collectd depends on: ii collectd-core 4.10.1-1 statistics collection and monitori ii libc6 2.11.2-4 Embedded GNU C Library: Shared lib ii librrd4 1.4.3-1time-series data storage and displ Versions of packages collectd recommends: ii iptables 1.4.9-1 administration tools for packet fi ii libatk1.0-0 1.30.0-1The ATK accessibility toolkit ii libc62.11.2-4Embedded GNU C Library: Shared lib ii libcairo21.8.10-5The Cairo 2D vector graphics libra ii libcurl3-gnutls 7.21.1-1Multi-protocol file transfer libra ii libdbi0 0.8.3+really0.8.2-1 Database Independent Abstraction L ii libdbus-1-3 1.2.24-3simple interprocess messaging syst ii libdbus-glib-1-2 0.88-2 simple interprocess messaging syst ii libesmtp51.0.4-5 LibESMTP SMTP client library ii libfontconfig1 2.8.0-2.1 generic font configuration library ii libfreetype6 2.4.2-2 FreeType 2 font engine, shared lib ii libgcrypt11 1.4.5-2 LGPL Crypto library - runtime libr ii libglib2.0-0 2.24.1-1The GLib library of C routines ii libgtk2.0-0 2.20.1-1The GTK+ graphical user interface ii libhal1 0.5.14-3Hardware Abstraction Layer - share pn libmemcached5 (no description available) ii libmysqlclient16 5.1.49-1MySQL database client library ii libnotify1 [libnotif 0.5.0-2 sends desktop notifications to a n pn libopenipmi0 (no description available) ii liboping01.4.0-1 C/C++ library to generate ICMP ECH ii libpango1.0-01.28.1-1Layout and rendering of internatio ii libpcap0.8 1.1.1-2 system interface for user-level pa ii libperl5.10 5.10.1-14 shared Perl library ii libpq5 8.4.4-2 PostgreSQL C client library pn libprotobuf-c0 (no description available) ii libpython2.6 2.6.6-3 Shared Python runtime library (ver ii librrd4 1.4.3-1 time-series data storage and displ ii libsensors4 1:3.1.2-6 library to read temperature/voltag ii libsnmp155.4.3~dfsg-1SNMP (Simple Network Management Pr ii libssl0.9.8 0.9.8o-2SSL shared libraries pn libtokyotyrant3(no description available) pn libupsclient1 (no description available) pn libvirt0 (no description available) ii libxml2 2.7.7.dfsg-4GNOME XML library pn libyajl1 (no description available) collectd suggests no packages. -- Configuration Files: /etc/collectd/collectd.conf changed [not included] /etc/collectd/thresholds.conf changed [not included] -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
