[2.3.4] Segmentation faults

[Aki Tuomi]

We don't consider it as "very early beta". We consider it production ready. It is bit more work to set up though.

Aki

> On 04 December 2018 at 17:16 Joan Moreau <jom at grosjo.net> wrote:
> 
> 
> Thanks for mySql 
> 
> For Squat vs Solr, Solr does not reach Squat by very far in terms of
> results : If I setup Solr, and search (via the search in Roundbube or
> Evolution) for a keyword or part of the keyword, the results are
> complete non sense. The diference between "search in full body" and
> "search in fields" does not even work. 
> 
> Solr with Dovecot seems very early beta isnt'it ? 
> 
> On 2018-12-04 15:57, Aki Tuomi wrote:
> 
> > On 04 December 2018 at 16:46 Joan Moreau via dovecot <dovecot at dovecot.org> wrote:
> > 
> > Hi 
> > 
> > How to solve this ? 
> > 
> > So many similar segfaults 
> > 
> > Thank you 
> > 
> > On 2018-11-30 06:11, Joan Moreau wrote:
> > 
> > ANother (very very long) example : 
> > 
> > # gdb /usr/libexec/dovecot/indexer-worker core.indexer-worker.0.3a33f56105e043de802a7dfcee265a07.21017.1543533424000000
> > GNU gdb (GDB) 8.2
> > Copyright (C) 2018 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.
> > Type "show copying" and "show warranty" for details.
> > This GDB was configured as "x86_64-pc-linux-gnu".
> > Type "show configuration" for configuration details.
> > For bug reporting instructions, please see:
> > <http://www.gnu.org/software/gdb/bugs/>.
> > Find the GDB manual and other documentation resources online at:
> > <http://www.gnu.org/software/gdb/documentation/>. 
> > 
> > For help, type "help".
> > Type "apropos word" to search for commands related to "word"...
> > Reading symbols from /usr/libexec/dovecot/indexer-worker...done.
> > [New LWP 21017]
> > [Thread debugging using libthread_db enabled]
> > Using host libthread_db library "/usr/lib/libthread_db.so.1".
> > Core was generated by `dovecot/indexer-worker'.
> > Program terminated with signal SIGSEGV, Segmentation fault.
> > #0 0x00007f768b62b13e in file_lock_do (fd=18, path=0x564540376790 "/data/mail/grosjo.net/admin/mailboxes/QoS/dbox-Mails/dovecot.index.search", lock_type=0, 
> > lock_method=FILE_LOCK_METHOD_FCNTL, timeout_secs=60, error_r=0x7fff045010b0) at file-lock.c:173
> > 173 {
> > (gdb) bt full
> > #0 0x00007f768b62b13e in file_lock_do (fd=18, path=0x564540376790 "/data/mail/grosjo.net/admin/mailboxes/QoS/dbox-Mails/dovecot.index.search", lock_type=0, 
> > lock_method=FILE_LOCK_METHOD_FCNTL, timeout_secs=60, error_r=0x7fff045010b0) at file-lock.c:173
> > lock_type_str = <optimized out>
> > started = <optimized out>
> > ret = <optimized out>
> > __func__ = "file_lock_do"
> > #1 0x00007f768b62b5b6 in file_wait_lock_error (fd=18, path=0x564540376790 "/data/mail/grosjo.net/admin/mailboxes/QoS/dbox-Mails/dovecot.index.search", lock_type=0, 
> > lock_method=FILE_LOCK_METHOD_FCNTL, timeout_secs=<optimized out>, lock_r=0x7fff04501118, error_r=0x7fff045010b0) at file-lock.c:318
> > lock = <optimized out>
> > ret = <optimized out>
> > #2 0x00007f768b62b660 in file_wait_lock (fd=<optimized out>, path=<optimized out>, lock_type=lock_type at entry=0, lock_method=<optimized out>, timeout_secs=timeout_secs at entry=60, 
> > lock_r=lock_r at entry=0x7fff04501118) at file-lock.c:303
> > error = 0x564540376490 ""
> > ret = <optimized out>
> > #3 0x00007f768a976c87 in squat_trie_lock (trie=0x564540376490, lock_type=0, file_lock_r=0x7fff04501118, dotlock_r=0x7fff04501120) at squat-trie.c:294
> > ret = <optimized out>
> > dotlock_r = 0x7fff04501120
> > file_lock_r = 0x7fff04501118
> > trie = 0x564540376490
> > ret = <optimized out>
> > __func__ = "squat_trie_lock"
> > lock_type = 0
> > ret = <optimized out>
> > __func__ = "squat_trie_lock"
> > #4 0x00007f768a978627 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1487
> > file_lock = 0x0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #5 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #6 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #7 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #8 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #9 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c850
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #10 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #11 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #12 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #13 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #14 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c7b0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #15 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #16 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #17 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #18 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #19 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c710
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #20 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #21 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #22 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #23 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #24 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c670
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #25 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #26 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #27 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #28 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #29 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c5d0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #30 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #31 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #32 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #33 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #34 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c530
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #35 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #36 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #37 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #38 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #39 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c490
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #40 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #41 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #42 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #43 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #44 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c3f0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #45 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #46 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #47 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #48 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #49 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c350
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #50 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > #51 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #52 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #53 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #54 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c2b0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #55 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #56 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #57 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #58 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #59 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c210
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #60 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #61 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #62 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #63 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #64 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c170
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #65 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #66 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #67 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #68 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #69 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c0d0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #70 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #71 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #72 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #73 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #74 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210c030
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #75 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #76 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #77 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #78 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #79 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bf90
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #80 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #81 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #82 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #83 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #84 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bef0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #85 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #86 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #87 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #88 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #89 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210be50
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #90 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #91 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #92 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #93 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #94 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bdb0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #95 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #96 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #97 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #98 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #99 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bd10
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #100 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #101 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #102 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #103 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #104 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bc70
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #105 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #106 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #107 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #108 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #109 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bbd0
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #110 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #111 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #112 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #113 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #114 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210bb30
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #115 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #116 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #117 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #118 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #119 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210ba90
> > dotlock = 0x0
> > changed = <optimized out>
> > ret = <optimized out>
> > #120 0x00007f768a97b19d in squat_uidlist_map_header (uidlist=0x5645403767f0) at squat-uidlist.c:378
> > No locals.
> > #121 squat_uidlist_map (uidlist=0x5645403767f0) at squat-uidlist.c:477
> > mmap_hdr = <optimized out>
> > ret = <optimized out>
> > #122 0x00007f768a97b432 in squat_uidlist_open (uidlist=0x5645403767f0) at squat-uidlist.c:546
> > No locals.
> > #123 0x00007f768a97b5aa in squat_uidlist_refresh (uidlist=<optimized out>) at squat-uidlist.c:569
> > No locals.
> > #124 0x00007f768a9787c2 in squat_trie_map (trie=0x564540376490, building=<optimized out>) at squat-trie.c:1526
> > file_lock = 0x56454210b9f0
> > dotlock = 0x0
> > changed = <optimized out> 
> > 
> > (continues for ages) 
> > 
> > On 2018-11-29 19:36, Joan Moreau wrote:
> > 
> > finally managed to locate the dump 
> > 
> > here the output: 
> > 
> > # gdb /usr/libexec/dovecot/auth /var/lib/systemd/coredump/core.auth.0.3a33f56105e043de802a7dfcee265a07.28130.1543516118000000
> > GNU gdb (GDB) 8.2
> > (gdb) bt full
> > #0 0x00007f739c35cd7f in raise () from /usr/lib/libc.so.6
> > No symbol table info available.
> > #1 0x00007f739c347672 in abort () from /usr/lib/libc.so.6
> > No symbol table info available.
> > #2 0x00007f739c39f878 in __libc_message () from /usr/lib/libc.so.6
> > No symbol table info available.
> > #3 0x00007f739c3a618a in malloc_printerr () from /usr/lib/libc.so.6
> > No symbol table info available.
> > #4 0x00007f739c3a7b27 in _int_free () from /usr/lib/libc.so.6
> > No symbol table info available.
> > #5 0x00007f739cc33585 in mysql_close (mysql=0x5636af7abdc0) at /usr/src/mariadb-10.3.11/libmariadb/libmariadb/mariadb_lib.c:1939
> > mysql = 0x5636af7abdc0
> > p = <optimized out>
> > p = <optimized out>
> > #6 0x00005636aef08f7c in driver_sqlpool_disconnect (_db=0x5636af7aaf30) at driver-sqlpool.c:590
> > conn__foreach_end = 0x5636af7ab570
> > db = 0x5636af7aaf30
> > conn = 0x5636af7ab560
> > #7 0x00005636aeefed65 in db_sql_unref (_conn=0x5636af7b0020) at db-sql.c:128
> > conn = 0x5636af7ae388
> > #8 0x00005636aeef7e15 in userdb_deinit (userdb=0x5636af7afff8) at userdb.c:191
> > idx = 0
> > __func__ = "userdb_deinit"
> > #9 0x00005636aeede209 in auth_deinit (auth=0x5636af7afd58) at auth.c:335
> > passdb = <optimized out>
> > userdb = 0x5636af7aff18
> > passdb = <optimized out>
> > userdb = <optimized out>
> > #10 auths_deinit () at auth.c:433
> > auth__foreach_end = 0x5636af7ae2f8
> > auth = 0x5636af7ae2f0
> > #11 0x00005636aeedcf65 in main_deinit () at main.c:270
> > l = <optimized out>
> > l = <optimized out>
> > l_end = <optimized out>
> > #12 main (argc=<optimized out>, argv=<optimized out>) at main.c:401
> > c = <optimized out>
> 
> On 27.11.2018 8.39, Joan Moreau wrote: 
> 
> Thank you Aki 
> 
> here the requested data (below) 
> 
> Please not as well that we have numerous subfolders (>50) and pretty big
> mailbox sizes (>20G) 
> 
> Bug appears mostly in auth process and index-worker 
> 
> dovecot -n : 
> 
> # 2.4.devel (de42b54aa): /etc/dovecot/dovecot.conf
> # Pigeonhole version 0.6.devel (65909cfa)
> # OS: Linux 4.19.4-arch1-1-ARCH x86_64 ext4
> # Hostname: gjserver
> base_dir = /run/dovecot
> default_login_user = dovecot
> default_vsz_limit = 16 G
> disable_plaintext_auth = no
> listen = *
> log_path = /var/log/mail/dovecot.log
> mail_gid = mail
> mail_location = mdbox:/data/mail/%d/%n:ALT=/data/mail/archives/%d/%n
> mail_plugins = fts fts_squat
> mail_uid = mailusers
> managesieve_notify_capability = mailto
> managesieve_sieve_capability = fileinto reject envelope
> encoded-character vacation subaddress comparator-i;ascii-numeric
> relational regex imap4flags copy include variables body enotify
> environment mailbox date index ihave duplicate mime foreverypart
> extracttext
> mdbox_rotate_size = 24 M 
> 
> (...) 
> 
> passdb {
> args = /etc/dovecot/dovecot-sql.conf
> driver = sql
> }
> (the rest default values) 
> fts squat was already deprecated in 2.2, and it's considered obsolete in
> 2.3. We hopefully get around removing it from 2.4, but you should move
> away from it to Solr.
> 
> The MySQL crash has been fixed in master, see
> https://github.com/dovecot/core/commit/3c5101ffdd2a8115e03ed7180d53578765dea4c9.patch
> 
> Aki