[Dovecot] Dovecot 2.0.beta3: Child killed with signal 11

Bernhard Schmidt berni at birkenwald.de
Sun Feb 28 18:21:50 EET 2010

Timo Sirainen <tss at iki.fi> wrote:

> On Sun, 2010-02-28 at 16:09 +0100, Thomas Leuxner wrote:
>> Feb 28 16:07:00 spectre dovecot: master: service(lmtp): child 17322 kille=
> d with signal 11 (core dumps disabled)
> Could you get gdb backtrace? http://dovecot.org/bugreport.html

For the record, I see those too. I use Stephan Bosch's Debian packages.
The issue has not been there with 2:2.0.beta3-0~auto+4
(hg 10807:ba19f3c077a8), but has appeared with 2:2.0.beta3-0~auto+6 (hg

#0  0x00007f525ef3dc93 in epoll_wait () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f525f85e07a in io_loop_handler_run (ioloop=0x18495d0)
    at ioloop-epoll.c:175
        ctx = 0x18497e0
        event = <value optimized out>
        list = <value optimized out>
        io = <value optimized out>
        tv = {tv_sec = 2147483, tv_usec = 0}
        t_id = 2
        msecs = 2147483647
        ret = 1
        i = <value optimized out>
        call = <value optimized out>
#2  0x00007f525f85d268 in io_loop_run (ioloop=0x18495d0) at ioloop.c:350
No locals.
#3  0x00007f525f84d9d3 in master_service_run (service=0x18494b0, 
    callback=0x1849850) at master-service.c:478
No locals.

I also see a signal 11 in pop3 on disconnect, backtrace:

(gdb) bt full
#0  hash_table_destroy (_table=0x6ec7f0) at hash.c:110
        table = 0x0
#1  0x00007f82b770b9d4 in settings_parser_deinit (_ctx=<value optimized
    at settings-parser.c:231
        ctx = 0x6ec7c8
#2  0x00007f82b7727681 in master_service_settings_cache_deinit (
    _cache=<value optimized out>) at master-service-settings-cache.c:93
        cache = 0x6ddaf8
        entry = 0x0
        next = 0x0

And managesieve segfaults immediately at TCP connect, but I have not
managed to get a backtrace yet (it always says "core not dumped"
regardless of ulimit -c setting. I also added -D to the executable, but
no core file yet)

Feb 28 17:18:07 mail dovecot: master: service(managesieve-login): child
1168 killed with signal 11 (core not dumped)


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