Hi,

I just noticed a crash in Dovecot (2.2.27) on Debian with the Debian version 1:2.2.27-2~bpo8+1:

Jan 28 07:50:42 srv1 dovecot: imap(yyy@xxx.de): Panic: file mail-storage.c: line 2170 (mailbox_save_context_reset): assertion failed: (ctx->copying_via_save) Jan 28 07:50:42 srv1 dovecot: imap(yyy@xxx.de): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x97d8e) [0x7f3e7fab8d8e] -> /usr/lib/dovecot/libdovecot.so.0(+0x97e7c) [0x7f3e7fab8e7c] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f3e7fa4f52e] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x421b8) [0x7f3e7fd881b8] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_save_cancel+0x76) [0x7f3e7fd8b4b6] -> /usr/lib/dovecot/modules/lib01_acl_plugin.so(+0xe1b2) [0x7f3e7f2691b2] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x45913) [0x7f3e7fd8b913] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_move+0x29) [0x7f3e7fd8bb29] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2225955] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2232296] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2230602] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2230690] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2230a55] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2230f65] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x52) [0x7f3e7facd8f2] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x10a) [0x7f3e7facef4a] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x3c) [0x7f3e7facd98c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f3e7facdb38] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f3e7fa55a03] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2223c32] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f3e7f697b45] -> dovecot/imap yyy@xxx.de 8x.1xx.1x.xx8 UID MOVE [0x562ff2223daf] Jan 28 07:50:42 srv1 dovecot: imap(yyy@xxx.de): Fatal: master: service(imap): child 5772 killed with signal 6 (core dumps disabled)

I'm using mdbox and I assume the user wanted to move a mail from the personal mailstore to a shared mailbox (shared by another user).

doveconf -n: # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.8.0-0.bpo.2-amd64 x86_64 Debian 8.7 auth_mechanisms = plain login auth_verbose = yes default_client_limit = 2100 default_process_limit = 350 default_vsz_limit = 512 M dict { acldict = mysql:/etc/dovecot/dovecot-dict-user_shares.conf quotadict = mysql:/etc/dovecot/dovecot-dict-quota.conf } first_valid_uid = 999 imap_client_workarounds = delay-newmail last_valid_uid = 999 lmtp_save_to_detail_mailbox = yes log_timestamp = "%Y-%m-%d %H:%M:%S " mail_gid = 8 mail_location = mdbox:~/mdbox mail_plugins = quota zlib acl mail_privileged_group = mail mail_shared_explicit_inbox = yes mail_uid = 999 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto envelope encoded-character subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext imapflags namespace { list = children location = mdbox:%%h/mdbox prefix = shared/%%u/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes list = yes location = mailbox Archiv { special_use = \Archive } mailbox Archive { special_use = \Archive } mailbox Archives { special_use = \Archive } mailbox Deleted { special_use = \Trash } mailbox "Deleted Items" { special_use = \Trash } mailbox "Deleted Messages" { special_use = \Trash } mailbox Drafts { special_use = \Drafts } mailbox Entw&APw-rfe { special_use = \Drafts } mailbox Entwurf { special_use = \Drafts } mailbox Gel&APY-scht { special_use = \Trash } mailbox "Gel&APY-schte Elemente" { special_use = \Trash } mailbox "Gel&APY-schte Objekte" { special_use = \Trash } mailbox Gesendet { special_use = \Sent } mailbox "Gesendete Elemente" { special_use = \Sent } mailbox "Gesendete Objekte" { special_use = \Sent } mailbox Junk { special_use = \Junk } mailbox Papierkorb { special_use = \Trash } mailbox SPAM { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Items" { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = separator = / subscriptions = yes type = private } passdb { args = /etc/dovecot/sql.conf driver = sql } plugin { acl = vfile acl_anyone = allow acl_shared_dict = proxy::acldict quota = dict:user::proxy::quotadict quota_exceeded_message =

Please let me know if you need more information.

-- Best regards, Sven Strickroth PGP key id F5A9D4C4 @ any key-server