[Dovecot] imap-login: Panic: epoll_ctl(add, 6) failed: Invalid argument

[Timo Sirainen]

On Mon, 2012-07-09 at 13:39 +0200, Angel L. Mateo wrote:
> Hello,
> 
> 	More problems (it seems that we won't be able to put our new servers in 
> production). The problem now is that when we reach 1000 dovecot 
> processes we have errors like:
> 
> Jul  9 12:10:22 myotis31 dovecot: imap-login: Panic: epoll_ctl(add, 6) 
> failed: Invalid argument
> Jul  9 12:10:22 myotis31 dovecot: imap-login: Fatal: master: 
> service(imap-login): child 32251 killed with signal 6 (core dumps disabled)
> 
> 	and server doesn't accept any new connection.
> 
> 	Our servers are running in ubuntu 12.04 with kernel 3.2.0-24-generic 
> kernel. I have found a similar problem at 
> https://bugzilla.redhat.com/show_bug.cgi?id=681578 but it is for redhat 
> kernel of series 2.6.
> 
> 	Could be the same problem? 

It's definitely the same problem.

> Any pointer to this problem for ubuntu 
> kernels? Or for generic 3.0 kernels?

Sorry, no idea.