[Dovecot] Problem about dovecot Panic

[Javier Miguel Rodríguez]

We had the same problem. Reboot with an older kernel
(2.6.18-274.17.1.el5 works for us). It is known bug of RHEL, see this
bugzilla: 

https://bugzilla.redhat.com/show_bug.cgi?id=681578 

Regards


Javier 

On Thu, 29 Mar 2012 10:15:32 +0200 (CEST), FABIO FERRARI
wrote: 

> Good morning,
> we have 2 Redhat Enterprise 5.7 machines,
they are a cluster with some
> mail services in it (postfix and dovecot
2).
> 
> The version of dovecot is dovecot-2.0.1-1_118.el5 (installed
via rpm).
> 
> From last week we have this dovecot problem: suddenly
dovecot doesn't
> accept any new connections, the dovecot.log file
reports lines like these
> 
> Mar 15 12:38:54 secchia dovecot: imap:
Panic: epoll_ctl(add, 5) failed:
> Invalid argument
> Mar 15 12:38:54
secchia dovecot: imap: Error: Raw backtrace:
>
/usr/lib64/dovecot/libdovecot.so.0 [0x36ea436de0] ->
>
/usr/lib64/dovecot/libdovecot.so.0 [0x36ea436e3a] ->
/usr/lib64/dovecot/
> libdovecot.so.0 [0x36ea4362e8] ->
>
/usr/lib64/dovecot/libdovecot.so.0(io_loop_handle_add+0x118)
>
[0x36ea441498] -> /usr/lib64/dovecot/libdovecot.so.0(io_add+0x8f)
>
[0x36ea440b7f] -> /usr/li
>
b64/dovecot/libdovecot.so.0(master_service_init_finish+0x1c6)
>
[0x36ea430c16] -> dovecot/imap(main+0x10a) [0x41773a] ->
>
/lib64/libc.so.6(__libc_start_main+0xf4) [0x36ea01d994] -> dovecot/
>
imap [0x408179]
> Mar 15 12:38:54 secchia dovecot: master: Error:
service(imap): child 14514
> killed with signal 6 (core dumps
disabled)
> Mar 15 12:38:54 secchia dovecot: master: Error:
service(imap): command
> startup failed, throttling
> Mar 15 12:39:50
secchia dovecot: imap-login: Error: master(imap): Auth
> request timed
out (received 0/12 bytes)
> Mar 15 12:39:51 secchia dovecot: imap-login:
Error: master(imap): Auth
> request timed out (received 0/12 bytes)
>
Mar 15 12:39:51 secchia dovecot: imap-login: Error: master(imap): Auth
>
request timed out (received 0/12 bytes)
> Mar 15 12:39:52 secchia
dovecot: imap-login: Error: net_connect_unix(imap)
> failed: Resource
temporarily unavailable
> Mar 15 12:39:52 secchia dovecot: imap-login:
Error: net_connect_unix(imap)
> failed: Resource temporarily
unavailable
> Mar 15 12:39:52 secchia dovecot: imap-login: Error:
master(imap): Auth
> request timed out (received 0/12 bytes)
> Mar 15
12:39:53 secchia dovecot: imap-login: Error: net_connect_unix(imap)
>
failed: Resource temporarily unavailable
> Mar 15 12:39:53 secchia
dovecot: imap-login: Error: net_connect_unix(imap)
> failed: Resource
temporarily unavailable
> Mar 15 12:39:54 secchia dovecot: imap-login:
Error: net_connect_unix(imap)
> failed: Resource temporarily
unavailable
> Mar 15 12:39:54 secchia dovecot: imap: Error: Login client
disconnected
> too early
> Mar 15 12:39:54 secchia dovecot: imap: Error:
Login client disconnected
> too early
> Mar 15 12:39:54 secchia dovecot:
imap: Error: Login client disconnected
> too early
> Mar 15 12:39:54
secchia dovecot: imap: Error: Login client disconnected
> too early
>
Mar 15 12:39:55 secchia dovecot: imap: Panic: epoll_ctl(add, 5)
failed:
> Invalid argument
> 
> and the kern.log file reports
> 
> Mar
15 12:38:52 secchia kernel: dlm: closing connection to node 1
> Mar 15
12:39:04 secchia kernel: lpfc 0000:83:00.0: 1:(0):2753 PLOGI
> failure
DID:010400 Status:x9/x32900
> Mar 15 12:39:04 secchia kernel: lpfc
0000:03:00.0: 0:(0):2753 PLOGI
> failure DID:010400 Status:x9/x32900
>
Mar 15 12:41:14 secchia kernel: lpfc 0000:03:00.0: 0:(0):2753 PLOGI
>
failure DID:010400 Status:x9/x32900
> Mar 15 12:41:15 secchia kernel:
lpfc 0000:83:00.0: 1:(0):2753 PLOGI
> failure DID:010400
Status:x9/x32900
> Mar 15 12:42:11 secchia kernel: dlm: got connection
from 1
> 
> can you help us?
> 
> thanks in advance
> 
> Fabio Ferrari