[BUG] dovecot 2.3.0 - service(lmtp) killed with signal 11 when user is overquota

[Aki Tuomi]

On 17.01.2018 15:23, Aki Tuomi wrote:
>
> On 17.01.2018 15:22, Marco Giunta wrote:
>> Hi,
>> I'm using dovecot 2.3.0 installed on a new CentOS 7.4 with rpm from
>> Dovecot repo. When I use LMTP to deliver an email to an overquota
>> user, lmtp service hangs with a segfault:
>>
>> Jan 17 13:39:45 server-02.example.com kernel: lmtp[5099]: segfault at
>> 0 ip 0000563599e372c2 sp 00007ffeaa4fdc80 error 4 in
>> lmtp[563599e31000+b000]
>> Jan 17 13:39:45 server-02.example.com dovecot[5089]: lmtp(5099):
>> Fatal: master: service(lmtp): child 5099 killed with signal 11 (core
>> dumped)
>>
>> If I try to deliver a mail with 'dovecot-lda' on the same overquota
>> user, email was rejected, as expected:
>>
>> Jan 17 13:38:26 server-02.example.com dovecot[6773]:
>> lda(USERNAME)<6773><ZbQDO8FDX1p1GgAASpDaHg>: Debug: Mailbox stdin:
>> Opened mail UID=1 because: copying
>> Jan 17 13:38:26 server-02.example.com dovecot[6773]:
>> lda(USERNAME)<6773><ZbQDO8FDX1p1GgAASpDaHg>: msgid=unspecified: save
>> failed to INBOX: Quota exceeded (mailbox for user is full)
>> Jan 17 13:38:26 server-02.example.com dovecot[6773]:
>> lda(USERNAME)<6773><ZbQDO8FDX1p1GgAASpDaHg>: msgid=unspecified:
>> rejected: Quota exceeded (mailbox for user is full)
>> Jan 17 13:38:26 server-02.example.com dovecot[6773]:
>> lda(USERNAME)<6773><ZbQDO8FDX1p1GgAASpDaHg>: msgid=: Return-Path
>> missing, rejection reason: Quota exceeded (mailbox for user is full)
>>
>> If user is no more overquota, LTMP delivery works:
>>
>> Jan 17 14:13:16 server-02.example.com dovecot[8651]:
>> lmtp(USERNAME at example.com)<8665><ZMKmEexLX1rZIQAASpDaHg>: Debug:
>> Mailbox <lmtp DATA local>: Opened mail UID=1 because: copying
>> Jan 17 14:13:16 server-02.example.com dovecot[8651]:
>> lmtp(USERNAME at example.com)<8665><ZMKmEexLX1rZIQAASpDaHg>: Debug:
>> INBOX: Mailbox opened because: quota count
>> Jan 17 14:13:16 server-02.example.com dovecot[8651]:
>> lmtp(USERNAME at example.com)<8665><ZMKmEexLX1rZIQAASpDaHg>: sieve:
>> msgid=<151619479629.10128.16766154794856971096 at client.example.com>:
>> stored mail into mailbox 'INBOX'
>>
>> Attached my dovecot configuration and a backtrace from gdb.
>>
>> Thanks,
>>   Marco
>>
>>
>>
> Thank you for your report, we'll look into it.
>
> Aki

Hi!

This is fixed with
https://github.com/dovecot/core/commit/2bf919786518d138cc07d9cc21e14ad5e07e5e56.patch

Aki Tuomi