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

[Robert Schetterer]

Am 09.07.2012 13:51, schrieb 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.
> 
> 

in case its fixed in some more recent versions

http://kernel.ubuntu.com/~kernel-ppa/mainline/

guess this is latest for 12.04
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/
-- 
Best Regards
MfG Robert Schetterer