In order to provide more information, here is a sample output of mail.err:

Mar 7 13:37:30 mba dovecot: imap(document): Error: mdbox map /mba_data/emails/document/storage/dovecot.map.index corrupted: map_uid=284393 refcount too low Mar 7 13:37:30 mba dovecot: imap(document): Fatal: master: service(imap): child 7549 killed with signal 11 (core dumped) Mar 7 13:37:30 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Drafts/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:30 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Templates/_Old/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:30 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Templates/Divers/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Sent/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/_QSW - a verifier/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Anick/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Anick/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Kristine/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/PO/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Daphne/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Sent/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:31 dovecot: last message repeated 4 times Mar 7 13:37:31 mba dovecot: imap(document): Error: mdbox map /mba_data/emails/document/storage/dovecot.map.index corrupted: map_uid=284393 refcount too low Mar 7 13:37:32 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:32 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:32 mba dovecot: imap(document): Fatal: master: service(imap): child 7561 killed with signal 11 (core dumped) Mar 7 13:37:33 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:33 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Sent/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:34 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:34 dovecot: last message repeated 2 times Mar 7 13:37:34 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Sent/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:37:34 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 13:38:59 dovecot: last message repeated 3 times

On Mon, Mar 7, 2016 at 12:58 PM, Joe Beaubien <joe.beaubien@gmail.com> wrote:

Hi everyone,

Dovecot keeps on segfaulting on me and I am unsure why. This setup has been running for 5 years and has given me very little trouble.

I am running Dovecot 2.1.7, setup with mdbox.

The imap process keeps on segfaulting for the same account (makes me think maybe an email or folder of that account is problematic).

My big issue is that force-resync also causes doveadm to segfault.

Here is the mail.err file I am getting:

Mar 7 12:34:36 mba kernel: [ 1955.486324] imap[5663]: segfault at 0 ip 00007ff1c1bd0b5e sp 00007fffd8599a40 error 4 in libdovecot-storage.so.0.0.0[7ff1c1b51000+fb000] Mar 7 12:34:36 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Sara/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:36 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Lucie/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:37 mba dovecot: imap(document): Error: mdbox map /mba_data/emails/document/storage/dovecot.map.index corrupted: map_uid=284393 refcount too low Mar 7 12:34:37 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Templates/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:39 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/Sent/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:40 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:40 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:41 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:41 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:41 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:42 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/_EE - a verifier/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:43 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:34:48 mba kernel: [ 1967.972883] imap[5688]: segfault at 0 ip 00007f058ebc9b5e sp 00007fff9baa7c00 error 4 in libdovecot-storage.so.0.0.0[7f058eb4a000+fb000] Mar 7 12:34:49 mba dovecot: imap(document): Error: /mba_data/emails/document/mailboxes/INBOX/Lucie/dbox-Mails/dovecot.index reset, view is now inconsistent Mar 7 12:43:44 mba dovecot: imap(document): Error: indexer disconnected unexpectedly Mar 7 12:43:44 mba dovecot: indexer: Error: Indexer worker disconnected, discarding 119 requests for document Mar 7 12:48:31 mba kernel: [ 2790.363755] doveadm[6586]: segfault at 0 ip 00007f1b2023fb5e sp 00007fff4e8ce200 error 4 in libdovecot-storage.so.0.0.0[7f1b201c0000+fb000] Mar 7 12:49:10 mba kernel: [ 2829.203900] doveadm[6604]: segfault at 0 ip 00007fa0d16e4b5e sp 00007fff1b89f480 error 4 in libdovecot-storage.so.0.0.0[7fa0d1665000+fb000]

First line is imap segfaulting. Last lines are doveadm segfaulting when I try to run force-resync.

Does anyone have any clue what to do in this situation?

Regards,

-Joe