Problem with Lua notification script since 2.3.15 update

[Vytenis Adm]

Not a solution, but I'd like to second this issue.

We have a Lua push configured as well, and are currently running 
dovecot-2.3.14-5 (CentOS 7.9)

After bootstrapping new instances with dovecot 2.3.15 the exact same 
issue appeared:

Jun 27 18:28:37 imaphost.tld dovecot[1331]: 
imap(user at example.com)<23828><zc6HisPFH2kj9m34>: Panic: file 
dlua-script.c: line 224 (dlua_script_init): assertion failed: 
(lua_gettop(script->L) == 0)
Jun 27 18:28:37 imaphost.tld dovecot[1331]: 
imap(user at example.com)<23828><zc6HisPFH2kj9m34>: Error: Raw backtrace: 
/usr/lib64/dovecot/libdovecot.so.0(backtrace_append+0x42) 
[0x7fb027d2e862] -> 
/usr/lib64/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7fb027d2e96e] 
-> /usr/lib64/dovecot/libdovecot.so.0(+0xf50fe) [0x7fb027d3c0fe] -> 
/usr/lib64/dovecot/libdovecot.so.0(+0xf51a1) [0x7fb027d3c1a1] -> 
/usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7fb027c8c60c] -> 
/usr/lib64/dovecot/libdovecot-lua.so.0(+0x4214) [0x7fb027062214] -> 
/usr/lib64/dovecot/lib22_push_notification_lua_plugin.so(+0x2b7b) 
[0x7fb024f78b7b] -> 
/usr/lib64/dovecot/lib20_push_notification_plugin.so(push_notification_driver_init+0x199) 
[0x7fb0260ff819] -> 
/usr/lib64/dovecot/lib20_push_notification_plugin.so(+0x76df) 
[0x7fb0261016df] -> 
/usr/lib64/dovecot/lib20_push_notification_plugin.so(+0x7e00) 
[0x7fb026101e00] -> 
/usr/lib64/dovecot/libdovecot-storage.so.0(hook_mail_user_created+0x209) 
[0x7fb0280529b9] -> 
/usr/lib64/dovecot/libdovecot-storage.so.0(mail_user_init+0x220) 
[0x7fb028059130] -> 
/usr/lib64/dovecot/libdovecot-storage.so.0(mail_storage_service_next_with_session_suffix+0x5ff) 
[0x7fb0280565cf] -> 
/usr/lib64/dovecot/libdovecot-storage.so.0(mail_storage_service_lookup_next+0x4f) 
[0x7fb028056cef] -> dovecot/imap(client_create_from_input+0x110) 
[0x55702bdf2120] -> dovecot/imap(+0x2d417) [0x55702bdf2417] -> 
/usr/lib64/dovecot/libdovecot.so.0(+0x73d96) [0x7fb027cbad96] -> 
/usr/lib64/dovecot/libdovecot.so.0(+0x74153) [0x7fb027cbb153] -> 
/usr/lib64/dovecot/libdovecot.so.0(+0x74f27) [0x7fb027cbbf27] -> 
/usr/lib64/dovecot/libdovecot.so.0(connection_input_default+0x158) 
[0x7fb027d33b48] -> 
/usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x65) 
[0x7fb027d54425] -> 
/usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12b) 
[0x7fb027d55dab] -> 
/usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x59) 
[0x7fb027d54529] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) 
[0x7fb027d54768] -> 
/usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) 
[0x7fb027cbe3c3] -> dovecot/imap(main+0x342) [0x55702bdd42f2] -> 
/lib64/libc.so.6(__libc_start_main+0xf5) [0x7fb02789b555] -> 
dovecot/imap(+0xf4f5) [0x55702bdd44f5]

Jun 27 18:28:37 imaphost.tld dovecot[1331]: 
imap(user at example.com)<23828><zc6HisPFH2kj9m34>: Fatal: master: 
service(imap): child 23828 killed with signal 6 (core dumps disabled - 
https://dovecot.org/bugreport.html#coredumps)


The workaround was to downgrade to dovecot-2.3.14-5, and the issues were 
gone.




On 2021-06-28 12:31, Ralf Becker wrote:
> If the Lua-notifications are enabled, Dovecot imap dies immediately at 
> authentication:
>
> Jun 28 09:17:29 imap-login: Info: Login: user=<ralf>, method=PLAIN, 
> rip=172.18.0.12, lip=172.18.0.16, mpid=16, TLS, 
> session=<dDhm9c/FYtqsEgAM>
> Jun 28 09:17:29 imap(ralf)<16><dDhm9c/FYtqsEgAM>: Panic: file 
> dlua-script.c: line 224 (dlua_script_init): assertion failed: 
> (lua_gettop(script->L) == 0)
> Jun 28 09:17:29 imap(ralf)<16><dDhm9c/FYtqsEgAM>: Error: Raw 
> backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x41) 
> [0x7f9f537ca5c1] -> 
> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x22) [0x7f9f537ca6e2] 
> -> /usr/lib/dovecot/libdovecot.so.0(+0x1070bb) [0x7f9f537d70bb] -> 
> /usr/lib/dovecot/libdovecot.so.0(+0x107157) [0x7f9f537d7157] -> 
> /usr/lib/dovecot/libdovecot.so.0(+0x5bb2b) [0x7f9f5372bb2b] -> 
> /usr/lib/dovecot/libdovecot-lua.so.0(+0x5354) [0x7f9f53311354] -> 
> /usr/lib/dovecot/modules/lib22_push_notification_lua_plugin.so(+0x3842) 
> [0x7f9f532c6842] -> 
> /usr/lib/dovecot/modules/lib20_push_notification_plugin.so(push_notification_driver_init+0x19c) 
> [0x7f9f532d062c] -> 
> /usr/lib/dovecot/modules/lib20_push_notification_plugin.so(+0x846f) 
> [0x7f9f532d246f] -> 
> /usr/lib/dovecot/modules/lib20_push_notification_plugin.so(+0x8b6a) 
> [0x7f9f532d2b6a] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(hook_mail_user_created+0x211) 
> [0x7f9f539084e1] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_user_init+0x20b) 
> [0x7f9f5390e80b] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_storage_service_next_with_session_suffix+0x587) 
> [0x7f9f5390bd57] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_storage_service_lookup_next+0x53) 
> [0x7f9f5390c4c3] -> dovecot/imap(client_create_from_input+0x180) 
> [0x5626eb18fe40] -> dovecot/imap(+0x3112a) [0x5626eb19012a] -> 
> /usr/lib/dovecot/libdovecot.so.0(+0x8d60e) [0x7f9f5375d60e] -> 
> /usr/lib/dovecot/libdovecot.so.0(+0x8d97b) [0x7f9f5375d97b] -> 
> /usr/lib/dovecot/libdovecot.so.0(+0x8e8be) [0x7f9f5375e8be] -> 
> /usr/lib/dovecot/libdovecot.so.0(connection_input_default+0x15e) 
> [0x7f9f537cef5e] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x6d) 
> [0x7f9f537ed3ed] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x145) 
> [0x7f9f537eea15] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x54) 
> [0x7f9f537ed494] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) 
> [0x7f9f537ed600] -> 
> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x17) 
> [0x7f9f537609e7] -> dovecot/imap(main+0x469) [0x5626eb172c19] -> 
> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) 
> [0x7f9f535020b3] -> dovecot/imap(_start+0x2e) [0x5626eb172cae]
> Jun 28 09:17:29 imap(ralf)<16><dDhm9c/FYtqsEgAM>: Fatal: master: 
> service(imap): child 16 killed with signal 6 (core dumps disabled - 
> https://dovecot.org/bugreport.html#coredumps)
>
> I use the following Dovecot configuration:
>
> # Store METADATA information in a file dovecot-metadata in user's home
> mail_attribute_dict = file:%h/dovecot-metadata
>
> # enable metadata
> protocol imap {
>   imap_metadata = yes
> }
>
> # add necessary plugins for Lua push notifications
> mail_plugins = $mail_plugins mail_lua notify push_notification 
> push_notification_lua
>
> # Lua notification script and URL of EGroupware push server
> plugin {
>   push_notification_driver = lua:file=/etc/dovecot/dovecot-push.lua
>   push_lua_url = 
> https://Bearer:secret@boulder.egroupware.org/egroupware/push
> }
>
> The Lua script is available under 
> https://github.com/EGroupware/swoolepush/blob/master/doc/dovecot-push.lua
>
> The whole Dovecot configurations is available under
>
> https://github.com/EGroupware/build.opensuse.org/tree/master/server:eGroupWare/egroupware-mail/egroupware-mail/dovecot 
>
>
> Dovecot runs in a Ubuntu 20.04 based container and seems to use the 
> correct liblua5.3:
>
> root at 750978e5c0ee:/# dpkg -l|grep -i lua
> ii  dovecot-lua                2:2.3.15-1+ubuntu20.04 amd64 secure 
> POP3/IMAP server - LUA support
> ii  liblua5.3-0:amd64          5.3.3-1.1ubuntu2 amd64 Shared library 
> for the Lua interpreter version 5.3
> ii  lua-json                   1.3.4-2 all          JSON 
> decoder/encoder for Lua
> ii  lua-lpeg:amd64             1.0.2-1 amd64        LPeg library for 
> the Lua language
> ii  lua-socket:amd64           3.0~rc1+git+ac3201d-4 amd64 TCP/UDP 
> socket library for the Lua language
>
> Everything was running fine with 2.3.13, have not tried with 2.3.14 yet.
>
> Any ideas?
>
> Ralf
>