dovecot - Oct 2017 - Core Dumps with dovecot-2.2 -git as of 2.2.devel (eaf276b33)

Sure.? Here you go:

Oct 13 23:45:01 thunderstorm.reub.net dovecot: imap-login: Login: 
user=<reuben>, auth-method=PLAIN, remote=2001:44b8:x:x, 
local=2001:44b8:31d4:x:x, TLSv1.2 with cipher 
ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: ==16947== 
Syscall param epoll_pwait(sigmask) points to unaddressable byte(s)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? at 0x58A2705: epoll_pwait (epoll_pwait.c:42)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x550643C: io_loop_handler_run_internal (ioloop-epoll.c:183)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5503B60: io_loop_handler_run (ioloop.c:649)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5503A83: io_loop_run (ioloop.c:624)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x544C15C: master_service_run (master-service.c:719)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x44999D: main (main.c:143)
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? Address 0x0 is not stack'd, malloc'd or (recently) free'd
Oct 13 23:45:03 thunderstorm.reub.net dovecot: doveadm: Error: ==16947=Oct 13
23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947==
Invalid read of size 8
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? at 0x54F2E38: i_stream_next_line (istream.c:428)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x54F2EFB: i_stream_read_next_line (istream.c:449)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x441D68: server_connection_print_log 
(server-connection.c:305)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x442154: server_connection_input_one 
(server-connection.c:405)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x4420F6: server_connection_input (server-connection.c:390)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x550397F: io_loop_call_io (ioloop.c:600)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5506596: io_loop_handler_run_internal (ioloop-epoll.c:223)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5503B60: io_loop_handler_run (ioloop.c:649)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5503A83: io_loop_run (ioloop.c:624)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x426FDE: dsync_connect_tcp (doveadm-dsync.c:850)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x427143: parse_location (doveadm-dsync.c:881)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x4273ED: cmd_dsync_prerun (doveadm-dsync.c:947)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? Address 0x10 is not stack'd, malloc'd or (recently)
free'd
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947=Oct 13
23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947=Oct 13 23:45:06
thunderstorm.reub.net dovecot: doveadm: Error: ==16947==
Process terminating with default action of signal 11 (SIGSEGV): dumping core
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? Access not within mapped region at address 0x10
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? at 0x54F2E38: i_stream_next_line (istream.c:428)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x54F2EFB: i_stream_read_next_line (istream.c:449)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x441D68: server_connection_print_log 
(server-connection.c:305)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x442154: server_connection_input_one 
(server-connection.c:405)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x4420F6: server_connection_input (server-connection.c:390)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x550397F: io_loop_call_io (ioloop.c:600)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5506596: io_loop_handler_run_internal (ioloop-epoll.c:223)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5503B60: io_loop_handler_run (ioloop.c:649)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x5503A83: io_loop_run (ioloop.c:624)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x426FDE: dsync_connect_tcp (doveadm-dsync.c:850)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x427143: parse_location (doveadm-dsync.c:881)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==??? by 0x4273ED: cmd_dsync_prerun (doveadm-dsync.c:947)
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? If you believe this happened as a result of a stack
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? overflow in your program's main thread (unlikely but
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? possible), you can try to increase the size of the
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? main thread stack using the --main-stacksize= flag.
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: 
==16947==? The main thread stack size used in this run was 8388608.
Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Fatal: master: 
service(doveadm): child 16947 killed with signal 11 (core not dumped)
Oct 13 23:45:10 thunderstorm.reub.net postfix/smtpd[17090]: connect from 
tornado.reub.net[150.101.124.42]

Reuben


On 13/10/2017 9:13 PM, Timo Sirainen wrote:
> Could you try running with valgrind and show the valgrind output in
Dovecot's error logs? :
>
> service doveadm {
>    executable = /usr/bin/valgrind -q --vgdb=no
/usr/libexec/dovecot/doveadm-server
> }
>
>> On 12 Oct 2017, at 23.10, Reuben Farrelly <reuben-dovecot at
reub.net> wrote:
>>
>> No.  Compiling entirely from -git source (on one system) and a Gentoo
ebuild on another two.
>>
>> Reuben
>>
>> On 12/10/2017 10:38 PM, Aki Tuomi wrote:
>>> Are you using the xi packages? If yes, can you please send me one
fresh core?
>>> Aki
>>>> On October 12, 2017 at 8:43 AM Aki Tuomi <aki.tuomi at
dovecot.fi> wrote:
>>>>
>>>>
>>>> We'll take a look
>>>>
>>>>
>>>> ---Aki TuomiDovecot oy
>>>> -------- Original message --------From: Reuben Farrelly
<reuben-dovecot at reub.net> Date: 12/10/2017  07:50  (GMT+02:00) To: Aki
Tuomi <aki.tuomi at dovecot.fi> Subject: Re: Core Dumps with dovecot-2.2
-git as of 2.2.devel (eaf276b33)
>>>> Hi Aki,
>>>>
>>>> I think I posted a bt full of this in the original email I sent
to the list:
>>>>
>>>>
https://www.dovecot.org/pipermail/dovecot/2017-October/109583.html
>>>>
>>>> I've got heaps of coredumps if we need to pick apart one
specific one
>>>> now though.
>>>>
>>>> Reuben

OOn 13 Oct 2017, at 15.48, Reuben Farrelly <reuben-dovecot at reub.net>
wrote:
> 
> Sure.  Here you go:
> 
> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947==
Invalid read of size 8
> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947==   
at 0x54F2E38: i_stream_next_line (istream.c:428)
> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947==   
by 0x54F2EFB: i_stream_read_next_line (istream.c:449)
> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947==   
by 0x441D68: server_connection_print_log (server-connection.c:305)
> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error: ==16947==   
by 0x442154: server_connection_input_one (server-connection.c:405)
Oh, I think your other side is running an old Dovecot? Does the attached patch
help?

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On 14/10/2017 8:58 PM, Timo Sirainen wrote:
> OOn 13 Oct 2017, at 15.48, Reuben Farrelly <reuben-dovecot at
reub.net> wrote:
>>
>> Sure.  Here you go:
>>
>> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error:
==16947== Invalid read of size 8
>> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error:
==16947==    at 0x54F2E38: i_stream_next_line (istream.c:428)
>> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error:
==16947==    by 0x54F2EFB: i_stream_read_next_line (istream.c:449)
>> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error:
==16947==    by 0x441D68: server_connection_print_log (server-connection.c:305)
>> Oct 13 23:45:06 thunderstorm.reub.net dovecot: doveadm: Error:
==16947==    by 0x442154: server_connection_input_one (server-connection.c:405)
> 
> Oh, I think your other side is running an old Dovecot? Does the attached
patch help?
Not old by much - probably only a week or so behind with master-2.2.

But regardless, this patch seems to have resolved the problem now and I 
haven't had a crash in the past 8+ hours.

Thanks!
Reuben