-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all,
I'm using collectd 4.10.1 (Debian sid stock package) and I'm experiencing segfaults in notify_email quite a few times a day. Syslog : Aug 26 23:03:58 evangeline kernel: [2532564.880645] collectd[7394]: segfault at 0 ip (null) sp 00007fff6b0d1cb8 error 14 in collectd[400000+21000] Backtrace : #0 0x0000000000000000 in ?? () #1 0x00007f81ed721cb2 in do_session (session=0x1a99dc0) at protocol.c:360 #2 0x00007f81ed726404 in smtp_start_session (session=0x1a99dc0) at smtp-api.c:428 #3 0x00007f81ed92f712 in notify_email_notification (n=<value optimized out>, user_data=<value optimized out>) at notify_email.c:263 #4 0x000000000040b5f6 in plugin_dispatch_notification (notif=0x7fff6b0d3230) at plugin.c:1533 #5 0x000000000040fa44 in uc_send_notification (name=0x1aef2c0 "nadia.irken.naken.net/df/df-root") at utils_cache.c:192 #6 0x000000000040fd66 in uc_check_timeout () at utils_cache.c:437 #7 0x000000000040641f in do_loop (argc=<value optimized out>, argv=<value optimized out>) at collectd.c:336 #8 main (argc=<value optimized out>, argv=<value optimized out>) at collectd.c:618 It seems that notify_email_notification() is called simultaneously by 2 threads leading to 2 calls to smtp_start_session on the same global var session causing the crash (Note: my mail server is quite slow to respond, with a faster mail server it may not happen). Also, there is another minor bug : if collectd is stopped when a notification is dispatched, notify_email_shutdown() destroys the session which is used by notify_email_notification() causing a segfault. I can provide more information if needed. - -- regards, Manuel CISSE -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkx3aREACgkQOMej/7dX0BBFMACggZMfiVFp0+EfJJZGF8E/p4gC AIsAn324DfxVBBIYrwWZ8nptM4FggMi8 =NbSp -----END PGP SIGNATURE----- _______________________________________________ collectd mailing list collectd@verplant.org http://mailman.verplant.org/listinfo/collectd