Bug in dovecot 2.3 virtual plugin

[Jakob Schürz]

Hi!

This is very strange...
This error affects only one mailaccount, and it happend not yesterday.
The file

/var/lib/dovecot/db/indexes/Maildir/jakob/INBOX/dovecot.index

which hat "Panic: Leaked view for index" does not exist. only
dovecot.index.log and .cache exists in this mailbox. (which is normal
for small mailboxes, i've read). But why is dovecot throwing an error?

And i could find out, this is only, when i try to open a virtual folder.

I switched back to older self-compiled dovecot-versions... but the error
exists also there (but not before the update!!!)

I also deleted all the dovecot.index-files, dovecot.index.log and
dovecot.index.cache-files to let rebuild dovecot the index again... the
error persists.

Is it a misconfiguration?

So i tried to build for the virtual-Mailboxes the Index in memory... the
error persists and dovecot wants to read this index-file.

My virtual folders not working any longer (on this account only!)

For debug purpose i deleted all the emails in this mailbox, the error
dissapered on this folder, but comes back in the next folder.

could this be a problem with ulimit?

greez
jakob

Am 2018-01-04 um 11:07 schrieb Jakobus Schürz:
> Hi!
> 
> Is this a bug according to the other one?
> 
> When i try to open a real or virtual mailbox, i often (not on every
> mailbox) get this error-message:
> 
> Jän 04 11:03:32 aldebaran dovecot[24534]:
> imap(jakob)<24705><Ug/EcfBhSrDAqAAO>: Panic: Leaked view for index
> /var/lib/dovecot/db/indexes/Maildir/jakob/INBOX/dovecot.index: Opened in
> index-storage.c:336
> Jän 04 11:03:32 aldebaran dovecot[24534]:
> imap(jakob)<24705><Ug/EcfBhSrDAqAAO>: Error: Raw backtrace:
> /usr/local/lib/dovecot/libdovecot.so.0(+0xc6021) [0x7f47d5872021] ->
> /usr/local/lib/dovecot/libdovecot.so.0(+0xc60ed) [0x7f47d58720ed] ->
> /usr/local/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f47d57e4481] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(+0xf3942)
> [0x7f47d5c11942] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(index_storage_mailbox_close+0x72)
> [0x7f47d5be8ec2] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_close+0x1a)
> [0x7f47d5b68c0a] ->
> /usr/local/lib/dovecot/lib20_virtual_plugin.so(+0xa7e0) [0x7f47d0dd37e0]
> ->
> /usr/local/lib/dovecot/lib20_virtual_plugin.so(virtual_backend_box_open+0x2b)
> [0x7f47d0dd397b] ->
> /usr/local/lib/dovecot/lib20_virtual_plugin.so(virtual_storage_sync_init+0x1026)
> [0x7f47d0dd6926] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x4d)
> [0x7f47d5b6b05d] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37)
> [0x7f47d5b6b117] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(index_storage_get_status+0x31)
> [0x7f47d5be7781] ->
> /usr/local/lib/dovecot/lib20_virtual_plugin.so(+0x9b3d) [0x7f47d0dd2b3d]
> -> /usr/local/lib/dovecot/libdovecot-storage.so.0(+0xaded1)
> [0x7f47d5bcbed1] -> /usr/local/lib/dovecot/lib01_acl_plugin.so(+0xe975)
> [0x7f47d5001975] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_get_status+0x31)
> [0x7f47d5b6b4b1] ->
> /usr/local/lib/dovecot/lib20_virtual_plugin.so(virtual_storage_sync_init+0x114d)
> [0x7f47d0dd6a4d] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x4d)
> [0x7f47d5b6b05d] ->
> /usr/local/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37)
> [0x7f47d5b6b117] -> dovecot/imap [jakob 192.168.0.14
> EXAMINE](cmd_select_full+0x171) [0x555d195a91a1] -> dovecot/imap [jakob
> 192.168.0.14 EXAMINE](command_exec+0x64) [0x555d195b0ca4] ->
> dovecot/imap [jakob 192.168.0.14 EXAMINE](+0x1b0b2) [0x555d195af0b2] ->
> dovecot/imap [jakob 192.168.0.14 EXAMINE](+0x1b13c) [0x555d195af13c] ->
> dovecot/imap [jakob 192.168.0.14 EXAMINE](client_handle_input+0x1a5)
> [0x555d195af565] -> dovecot/imap [jakob 192.168.0.14
> EXAMINE](client_input+0x82) [0x555d195afbe2] ->
> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69)
> [0x7f47d5889bf9] ->
> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x109)
> [0x7f47d588b499] ->
> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x52)
> [0x7f47d5889d02]
> Jän 04 11:03:32 aldebaran dovecot[24534]:
> imap(jakob)<24705><Ug/EcfBhSrDAqAAO>: Fatal: master: service(imap):
> child 24705 killed with signal 6 (core dumps disabled)
> 
> I deinstalled all debian-dovecot-packages and installed the user
> dovenull manually again. This is all, i did.
> 
> jakob