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@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@example.com)<8665><ZMKmEexLX1rZIQAASpDaHg>: Debug: INBOX: Mailbox opened because: quota count Jan 17 14:13:16 server-02.example.com dovecot[8651]: lmtp(USERNAME@example.com)<8665><ZMKmEexLX1rZIQAASpDaHg>: sieve: msgid=<151619479629.10128.16766154794856971096@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/2bf919786518d138cc07d9cc21e14ad5e07e5...

Aki Tuomi