dovecot - May 2018 - v2.3.1: Event leaked (parent=(nil)): http-client.c:137 and 439

Hi,

After upgrade to dovecot 2.3.1, many IMAP clients cause errors in 
dovecot log:

May 01 20:15:51 tiger dovecot[21985]: imap: Warning: Event 
0x555fd3c01630 leaked (parent=(nil)): http-client.c:137
May 01 20:15:51 tiger dovecot[21985]: imap: Warning: Event 
0x555fd3c00140 leaked (parent=(nil)): http-client.c:439

Namely:
* roundcube 1.3.3
* offlineimap
* nextcloud mail app

Despite the errors, the basic functionality seems to work - mails are 
received by the client. However, the GUI clients display an "internal 
server error" message window on each refresh.

Some other clients do not create any issues:
* MailDroid (Android)
* getmail

Anybody got a similar behaviour?

-- 
Milan Kn??ek | knizek.confy at gmail.com
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> On 01 May 2018 at 21:21 Milan Kn??ek <knizek.confy at gmail.com>
wrote:
> 
> 
> Hi,
> 
> After upgrade to dovecot 2.3.1, many IMAP clients cause errors in 
> dovecot log:
> 
> May 01 20:15:51 tiger dovecot[21985]: imap: Warning: Event 
> 0x555fd3c01630 leaked (parent=(nil)): http-client.c:137
> May 01 20:15:51 tiger dovecot[21985]: imap: Warning: Event 
> 0x555fd3c00140 leaked (parent=(nil)): http-client.c:439
> 
> Namely:
> * roundcube 1.3.3
> * offlineimap
> * nextcloud mail app
> 
> Despite the errors, the basic functionality seems to work - mails are 
> received by the client. However, the GUI clients display an "internal 
> server error" message window on each refresh.
> 
> Some other clients do not create any issues:
> * MailDroid (Android)
> * getmail
> 
> Anybody got a similar behaviour?
> 
> -- 
> Milan Kn??ek | knizek.confy at gmail.com
This is most likely fixed with
https://github.com/dovecot/core/commit/dc26c62d7bdd6d361ba38ecf8f64a04b7c9e008e.patch
in v2.3.1

Aki

On 01/05/2018 20:58, Aki Tuomi wrote:
>> On 01 May 2018 at 21:21 Milan Kn??ek <knizek.confy at gmail.com>
wrote:
>> 
>> Hi,
>> 
>> After upgrade to dovecot 2.3.1, many IMAP clients cause errors in
>> dovecot log:
>> 
>> May 01 20:15:51 tiger dovecot[21985]: imap: Warning: Event
>> 0x555fd3c01630 leaked (parent=(nil)): http-client.c:137
>> May 01 20:15:51 tiger dovecot[21985]: imap: Warning: Event
>> 0x555fd3c00140 leaked (parent=(nil)): http-client.c:439
>> 
>> Namely:
>> * roundcube 1.3.3
>> * offlineimap
>> * nextcloud mail app
>> 
>> Despite the errors, the basic functionality seems to work - mails are
>> received by the client. However, the GUI clients display an
"internal
>> server error" message window on each refresh.
>> 
>> Some other clients do not create any issues:
>> * MailDroid (Android)
>> * getmail
>> 
>> Anybody got a similar behaviour?
>> 
>> --
>> Milan Kn??ek | knizek.confy at gmail.com
> 
> This is most likely fixed with 
>
https://github.com/dovecot/core/commit/dc26c62d7bdd6d361ba38ecf8f64a04b7c9e008e.patch
> in v2.3.1
> 
> Aki
I tried to apply the patch to v2.3.1 and compilation failed

```
mail-storage.c:429:23: error: 'struct mail_storage' has no member named 
'event'
    event_unref(&storage->event);
```

It probably requires some of the preceeding commits to be applied too. 
Or compile current master. I will try later (next week), too busy now.

Thanks for pointing to it, anyway.

Milan