Dovecot LMTP Process Hung

[Miguel Ângelo Santos Pereira]

Forgot to add, this was for lmtp, where the logs here aren't mentioning it,
here's what the kernel says, task lmtp blocked for more than 120 seconds.

Miguel Ângelo Santos Pereira <mail at miguelsp.net> escreveu no dia quinta,
1/07/2021 à(s) 13:29:

> Hey there guys,
>
> Here's what I found in the logs:
>
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5fcb20
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: master: Warning: Sent SIGTERM to 1 auth
> processes
> Jul 1 08:10:27 tango dovecot: master: Warning: Processes aren't dying
> after reload, sent SIGTERM to 12 processes.
> Jul 1 08:10:27 tango dovecot: pop3-login: Warning: Event 0x5567deff4a00
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: pop3-login: Warning: Event 0x5562c9058d40
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f845a200
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f84593d0
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f841bf60
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f83f48d0
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f83f4060
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5fcb20
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5e0c50
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5c1c00
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff59f330
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff4db1f0
> leaked (parent=(nil)): client-common.c:217
> Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 stats
> processes
> Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1
> pop3-login processes
> Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 5 imap
> processes
> Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1
> imap-login processes
> Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 config
> processes
> Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 auth
> processes
> Jul 1 08:09:59 tango dovecot: master: Warning: Processes aren't dying
> after reload, sent SIGTERM to 10 processes.
> Jul 1 08:09:59 tango dovecot: stats: Warning: Killed with signal 15 (by
> pid=28266 uid=0 code=kill)
> Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
> pid=28266 uid=0 code=kill)
> Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
> pid=28266 uid=0 code=kill)
> Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
> pid=28266 uid=0 code=kill)
> Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
> pid=28266 uid=0 code=kill)
>
> --
>
> We noticed this as the server wouldn't stop overloading, reaching 150+
> load, we had to reboot it. It's not the first time we see this, and kill -9
> PID wouldn't do anything to the processes, at all.
>
> Any idea guys? We're stuck here.
> I've tried to increase the RAM allocation for dovecot, hope it helps.
>
> --
> *Com os meus melhores cumprimentos,*
> *Best Regards,*
>
> *Miguel Ângelo Santos Pereira*
>


-- 
*Com os meus melhores cumprimentos,*
*Best Regards,*

*Miguel Ângelo Santos Pereira*
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