Hi,

having the attached configuration with Dovecot 2.2.9, Dovecot's crashing when moving a mail from a shared folder into another shared folder.

Moving that mail into a "real" folder of the user or moving that mail from a real folder into the shared folder is always working. But moving from a shared folder into a shared folder doesn't work.

Sep 2 11:47:42 mail02 dovecot: imap(peer.heinlein@example.com): Panic: file mail-index.c: line 380 (mail_index_keywords_unref): assertion failed: (keywords->refcount > 0) Sep 2 11:47:42 mail02 dovecot: imap(peer.heinlein@example.com): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x62792) [0x7f87e455f792] -> /usr/lib/dovecot/libdovecot.so.0(+0x627f6) [0x7f87e455f7f6] -> /usr/lib/dovecot/libdovecot.so.0(+0x1c5ca) [0x7f87e45195ca] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xb032f) [0x7f87e487232f] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_copy+0x75) [0x7f87e4838315] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_move+0x1d) [0x7f87e48383dd] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4cfbc4a] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4d06acd] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4d05b60] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4d05c4d] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4d05edd] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4d06292] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f87e456f5f6] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xaf) [0x7f87e45706cf] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f87e456f568] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f87e451e0c3] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4d10043] -> /lib/libc.so.6(__libc_start_main+0xfd) [0x7f87e4192c8d] -> dovecot/imap peer.heinlein@example.com 172.31.xxx.xxx UID move [0x7f87e4cfa0e9] Sep 2 11:47:42 mail02 dovecot: imap(peer.heinlein@example.com): Fatal: master: service(imap): child 18707 killed with signal 6 (core dumps disabled)

Peer

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