doveadm index assertion failed

[Nick Rosier]

Timo Sirainen wrote:
> On 05 Oct 2015, at 22:05, Nick Rosier<nick+dovecot at bunbun.be>  wrote:
>> Hi,
>>
>> one of my mailboxes returns following error when I run doveadm index on it:
>>
>> Panic: file charset-iconv.c: line 85 (charset_to_utf8_try): assertion failed: (srcleft<= CHARSET_MAX_PENDING_BUF_SIZE)
>>
>> OS: FreeBSD 10.2
>> Dovecot: 2.1.19
>> Tika: 1.10
>> SOLR: 5.3.1
>
> I thought this would have definitely been fixed by now.. Can you find some specific email which is triggering this? It's either something strange that I didn't expect, or it's a bug in FreeBSD's iconv().
>
> Also can you debug this like:
>
> gdb --args doveadm index -u user at domain INBOX
> run
> <it should crash now>
> f 5
> p src
> p ic_srcbuf
> p *src_size
> p srcleft
I recompiled Dovecot with Debug but I suspect I will have to do it for 
all the required libraries as well; I did manage to find the offending 
message is in Trash but have not been able to pin-point which message it 
is. Just in case, here is the debugging info. I will see if I can 
compile all dependencies in debug mode as well.

GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
(gdb) run
Starting program: /usr/local/bin/doveadm index -u xxxx at xxxx Trash
doveadm(xxxx at xxxx): Panic: file charset-iconv.c: line 85 
(charset_to_utf8_try): assertion failed: (srcleft <= 
CHARSET_MAX_PENDING_BUF_SIZE)

Program received signal SIGABRT, Aborted.
0x000000080149f64a in thr_kill () from /lib/libc.so.7
(gdb) f 5
#5  0x0000000801143cd3 in i_panic (format=0x801191c30 "file %s: line %d 
(%s): assertion failed: (%s)") at failures.c:275
275     failures.c: No such file or directory.
         in failures.c
Current language:  auto; currently minimal
(gdb) p src
No symbol "src" in current context.
(gdb) p ic_srcbuf
No symbol "ic_srcbuf" in current context.
(gdb) p *src_size
No symbol "src_size" in current context.
(gdb) p srcleft
No symbol "srcleft" in current context.