[Dovecot] panic in dovecot when using fts with solr

[Andre Rodier]

Hello All,

I have a panic error in dovecot when I try to use the fts search with Solr.

The version of dovecot I use is version 2.1

I have used a telnet session to search, but I don't know if this make a 
difference:

telnet localhost imap
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE 
IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
1 login andre-rodier XXXXXXXXXX
1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE 
IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND 
UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE 
QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS 
SPECIAL-USE SEARCH=FUZZY QUOTA ACL RIGHTS=texk] Logged in
2 select Inbox
* FLAGS (\Answered \Flagged \Deleted \Seen \Draft NonJunk 
$labels_4f9cce7caf4df $Forwarded $MDNSent Junk $labels_50f53a5862fb9 
$label2 $label1 $label4 $label3 announce announces 
$ulabels_50f548e03429e feedback)
* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft NonJunk 
$labels_4f9cce7caf4df $Forwarded $MDNSent Junk $labels_50f53a5862fb9 
$label2 $label1 $label4 $label3 announce announces 
$ulabels_50f548e03429e feedback \*)] Flags permitted.
* 2158 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 1354776694] UIDs valid
* OK [UIDNEXT 2568] Predicted next UID
* OK [HIGHESTMODSEQ 9739] Highest
2 OK [READ-WRITE] Select completed.
3 search text Valentine
* OK Searched 47% of the mailbox, ETA 0:10
* OK Searched 79% of the mailbox, ETA 0:05
* SEARCH 1120 1238 1279 1975 1990 1991 1992 1998 1999 2000 2001 2002 
2058 2106 2107 2110 2151
3 OK Search completed (32.210 secs).


----------------------------------------------------------------------
Mar  2 22:48:02 lapetus dovecot: indexer-worker(andre 
rodier at indiefield.co.uk): Panic: file solr-connection.c: line 545 
(solr_connection_post_more): assertion failed: (maxfd >= 0)
Mar  2 22:48:02 lapetus dovecot: indexer-worker(andre 
rodier at indiefield.co.uk): Error: Raw backtrace: 
/usr/lib/dovecot/libdovecot.so.0(+0x4414a) [0x7f5f4237214a] -> 
/usr/lib/dovecot/libdovecot.so.0(+0x4418e) [0x7f5f4237218e] -> 
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f5f4234982a] -> 
/usr/lib/dovecot/modules/lib21_fts_solr_plugin.so(solr_connection_post_more+0x249) 
[0x7f5f402d48d9] -> 
/usr/lib/dovecot/modules/lib21_fts_solr_plugin.so(+0x4ac7) 
[0x7f5f402d1ac7] -> 
/usr/lib/dovecot/modules/lib20_fts_plugin.so(fts_build_mail+0x339) 
[0x7f5f408f1f19] -> 
/usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xc6e0) [0x7f5f408f66e0] 
-> dovecot/indexer-worker(+0x28d4) [0x7f5f42ae88d4] -> 
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f5f4237f016] 
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xa7) 
[0x7f5f4237fcc7] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x28) 
[0x7f5f4237ea28] -> 
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) 
[0x7f5f4236b483] -> dovecot/indexer-worker(main+0xfe) [0x7f5f42ae834e] 
-> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) 
[0x7f5f41fc2ead] -> dovecot/indexer-worker(+0x23f5) [0x7f5f42ae83f5]
Mar  2 22:48:02 lapetus dovecot: indexer: Error: Indexer worker 
disconnected, discarding 1 requests for andre rodier at indiefield.co.uk
Mar  2 22:48:02 lapetus dovecot: imap(andre rodier at indiefield.co.uk): 
Error: indexer failed to index mailbox INBOX
Mar  2 22:48:02 lapetus dovecot: indexer-worker(andre 
rodier at indiefield.co.uk): Fatal: master: service(indexer-worker): child 
19644 killed with signal 6 (core dumps disabled)
----------------------------------------------------------------------

Regards,
Andre