Re: Sieve redirect is broken in 2.3.7.2 - signal 11

7 Oct 2019


      On 07/10/2019 10:17, Demonhost via dovecot wrote:
...
Hi Stephan,
Here it is:
We still can't reproduce it here.
First of all, did you update Pigeonhole along with Dovecot? This kind of
weirdness can happen when Pigeonhole was compiled against a different
version of Dovecot. You could compile Pigeonhole manually as well to
make sure, which also gives you the opportunity to get debug symbols for
Pigeonhole as well.
Do you also have your configuration for me (output from dovecot -n) ?
Also, can you issue in GDB after it crashed (as you did bt full before):
f 1
p src
Regards,
Stephan.
...
Program received signal SIGSEGV, Segmentation fault.
p_strdup (pool=pool@entry=0x55555579bc20, str=0x6d65642e6c69616d
) at
strfuncs.c:51
51      strfuncs.c: No such file or directory.
(gdb) bt full
#0  p_strdup (pool=pool@entry=0x55555579bc20, str=0x6d65642e6c69616d
) at
strfuncs.c:51
mem = <optimized out>
len = <optimized out>
#1  0x00007ffff757dd1a in ssl_iostream_settings_init_from
(pool=pool@entry=0x55555579bc20, dest=dest@entry=0x55555579bcf8,
src=0x555555764038) at iostream-ssl.c:298
offset = 0
src_str = 0x555555764038
dest_str = 0x55555579bcf8
#2  0x00007ffff7522545 in smtp_submit_session_init
(input=0x555555764008, set=0x7fffffffe378) at smtp-submit.c:84
pool = 0x55555579bc20
#3  0x00007ffff752265a in smtp_submit_init_simple (input=<optimized 
out>, set=<optimized out>, mail_from=0x555555759b80) at smtp-submit.c:134
session = <optimized out>
subm = 0x0
#4  0x00007ffff687e923 in ?? () from
/usr/lib/dovecot/lib90_sieve_plugin.so
No symbol table info available.
#5  0x00007ffff65fe761 in sieve_smtp_start () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#6  0x00007ffff65fe869 in sieve_smtp_start_single () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#7  0x00007ffff661c71e in ?? () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#8  0x00007ffff660e8a8 in ?? () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#9  0x00007ffff66100d1 in sieve_result_execute () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#10 0x00007ffff661e9fc in ?? () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#11 0x00007ffff661f638 in sieve_multiscript_run () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#12 0x00007ffff687f7cb in ?? () from
/usr/lib/dovecot/lib90_sieve_plugin.so
No symbol table info available.
#13 0x00007ffff7b69960 in mail_deliver (ctx=0x7fffffffe9e0,
storage_r=0x7fffffffe9a8) at mail-deliver.c:498
muser = 0x555555777ef8
ret = <optimized out>
__func__ = "mail_deliver"
#14 0x0000555555556fd2 in lda_deliver (stderr_rejection=false,
rcpt_to_source=<optimized out>, rcpt_to=<optimized out>,
path=<optimized out>, user=<optimized out>,
service_user=<optimized out>, ctx=0x7fffffffe9e0) at main.c:253
storage = 0x0
errstr = 0x0
ret = <optimized out>
var_table = <optimized out>
lda_set = <optimized out>
smtp_set = <optimized out>
#15 main (argc=<optimized out>, argv=<optimized out>) at main.c:517
t = 0x0
box = 0x0
set_roots = {0x555555758ae0 ,
0x555555758a80 , 0x0}
ctx = {pool = 0x555555759b40, set = 0x555555764078, smtp_set =
0x555555764008, session = 0x555555759b68, session_time_msecs = 0,
delivery_time_started = {
---Type <return> to continue, or q <return> to quit---
tv_sec = 1570435973, tv_usec = 126295}, dup_db =
0x55555578e040, session_id = 0x0, src_mail = 0x555555790c68, mail_from
= 0x555555759b80, mail_params = {
auth = 0x0, body = {type =
SMTP_PARAM_MAIL_BODY_TYPE_UNSPECIFIED, ext = 0x0}, envid = 0x0, ret =
SMTP_PARAM_MAIL_RET_UNSPECIFIED, size = 0, extra_params = {
arr = {buffer = 0x0, element_size = 0}, v = 0x0,
v_modifiable = 0x0}}, rcpt_to = 0x555555759bb0, rcpt_params = {orcpt =
{addr_type = 0x0,
addr = 0x555555759bb0, addr_raw = 0x0}, notify =
SMTP_PARAM_RCPT_NOTIFY_UNSPECIFIED, extra_params = {arr = {buffer =
0x0, element_size = 0}, v = 0x0,
v_modifiable = 0x0}}, rcpt_user = 0x555555777168,
rcpt_default_mailbox = 0x55555555763f "INBOX", dest_mail = 0x0, cache
= 0x0, tempfail_error = 0x0,
tried_default_save = false, saved_mail = false,
save_dest_mail = false, mailbox_full = false, dsn = false}
service_flags = <optimized out>
user = <optimized out>
errstr = 0x0
path = 0x0
rcpt_to = 0x0
final_rcpt_to = 0x0
mail_from = 0x555555759b80
storage_service = 0x7ffff7d6c5a8
service_user = 0x555555763198
service_input = {parent_event = 0x0, module = 0x55555555763b
"lda", service = 0x55555555763b "lda", username = 0x7ffff7832f31
"testaaaaaa@xxxxxxxxx.xx",
session_id = 0x0, session_id_prefix = 0x0,
session_create_time = 0, local_ip = {family = 0, u = {ip6 =
{__in6_union = {__s6_addr = '\000' ,
__s6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __s6_addr32
= {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, remote_ip = {family = 0, u =
{ip6 = {__in6_union = {
__s6_addr = '\000' , __s6_addr16 =
{0, 0, 0, 0, 0, 0, 0, 0}, __s6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr
= 0}}}, local_port = 0,
remote_port = 0, userdb_fields = 0x0, flags_override_add =
(unknown: 0), flags_override_remove = (unknown: 0), no_userdb_lookup =
false, debug = false,
conn_secured = false, conn_ssl_secured = false}
user_source = <optimized out>
rcpt_to_source = <optimized out>
process_euid = <optimized out>
stderr_rejection = false
ret = <optimized out>
c = <optimized out>
On 2019. 10. 06. 23:28, Stephan Bosch via dovecot wrote:
...
On 06/10/2019 23:14, Demonhost wrote:
...
I think alpine does not have that
https://pkgs.alpinelinux.org/packages?name=dovecot*&branch=v3.8&repo=main&arch=x86_64
https://git.alpinelinux.org/aports/tree/main/dovecot/APKBUILD?h=3.8-stable
What else would help? strace?
Do you have the opportunity to build Dovecot yourself, thereby
including the debug symbols?
Regards,
Stephan.
...
On 2019. 10. 06. 23:05, Stephan Bosch via dovecot wrote:
...
On 06/10/2019 23:03, Demonhost wrote:
...
Hi Stephan,
I managed to get GDB, I hope this one helps. If not I can send the
config too, but exactly same config works with 2.3.6.
You don't have the debug symbols for Dovecot installed. Usually,
your system will have a separate package for that. On Debian, it is
called dovecot-dbg.
...
92b9d3412dc8:/$ gdb /usr/libexec/dovecot/dovecot-lda -f
root@xxxxxxxx -d test@xxxxxxxxx
GNU gdb (GDB) 8.0.1
Copyright (C) 2017 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-alpine-linux-musl".
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"...
Warning: //test@xxxxxxxxx: No such file or directory.
Reading symbols from /usr/libexec/dovecot/dovecot-lda...(no
debugging symbols found)...done.
//root@xxxxxxxx: No such file or directory.
(gdb) r -f root@xxxxxxxx -d test@xxxxxxxxx < message
Starting program: /usr/libexec/dovecot/dovecot-lda -f
root@xxxxxxxx -d test@xxxxxxxxx < message
process 359 is executing new program: /usr/bin/doveconf
process 359 is executing new program:
/usr/libexec/dovecot/dovecot-lda
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff75b74f7 in p_strdup () from
/usr/lib/dovecot/libdovecot.so.0
(gdb) bt full
#0  0x00007ffff75b74f7 in p_strdup () from
/usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#1  0x00007ffff757dd1a in ssl_iostream_settings_init_from () from
/usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#2  0x00007ffff7522545 in smtp_submit_session_init () from
/usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#3  0x00007ffff752265a in smtp_submit_init_simple () from
/usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#4  0x00007ffff687e923 in ?? () from
/usr/lib/dovecot/lib90_sieve_plugin.so
No symbol table info available.
#5  0x00007ffff65fe761 in sieve_smtp_start () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#6  0x00007ffff65fe869 in sieve_smtp_start_single () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#7  0x00007ffff661c71e in ?? () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#8  0x00007ffff660e8a8 in ?? () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#9  0x00007ffff66100d1 in sieve_result_execute () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#10 0x00007ffff661e9fc in ?? () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#11 0x00007ffff661f638 in sieve_multiscript_run () from
/usr/lib/dovecot/libdovecot-sieve.so.0
No symbol table info available.
#12 0x00007ffff687f7cb in ?? () from
/usr/lib/dovecot/lib90_sieve_plugin.so
No symbol table info available.
#13 0x00007ffff7b69960 in mail_deliver () from
/usr/lib/dovecot/libdovecot-lda.so.0
No symbol table info available.
#14 0x0000555555556fd2 in main ()
No symbol table info available.
On 2019. 10. 04. 14:42, Stephan Bosch wrote:
...
Op 4-10-2019 om 12:10 schreef Demonhost via dovecot:
> Hi,
>
> If we use sieve redirect under dovecot 2.3.7.2 we end up with
>
> Oct 04 03:30:31 dockerhost docker[12154]: 2019-10-04T03:30:31
> 53ac2ae27650 postfix: 0605F207B0F36: to=xxxx@xxxx.xx,
> relay=127.0.0.1[127.0.0.1]:10024, delay=1.5,
> delays=0.36/0/0/1.1, dsn=2.0.0, status=sent (250 2.0.0 from
> MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 6FC89207B0F38)
> Oct 04 03:30:31 dockerhost docker[12154]: 2019-10-04T03:30:31
> 53ac2ae27650 postfix: 6FC89207B0F38: to=xxxx@xxxx.xx,
> relay=dovecot, delay=0.31, delays=0.05/0/0/0.26, dsn=4.3.0,
> status=deferred (Command died with signal 11:
> "/usr/libexec/dovecot/dovecot-lda")
>
> Using docker with official alpine image.
>
> / # cat /etc/alpine-release
> 3.8.4
>
> / # apk info -v | grep dovecot
> WARNING: Ignoring APKINDEX.adfa7ceb.tar.gz: No such file or
> directory
> WARNING: Ignoring APKINDEX.efaa1f73.tar.gz: No such file or
> directory
> dovecot-2.3.7.2-r0
> dovecot-fts-solr-2.3.7.2-r0
> dovecot-ldap-2.3.7.2-r0
> dovecot-pigeonhole-plugin-2.3.7.2-r0
> dovecot-pigeonhole-plugin-ldap-2.3.7.2-r0
>
> Sieve rule is:
> # rule:[test]
> if header :contains "subject" "test"
> {
>         redirect "testemail@gmail.com";
> }
>
> In host's dmesg we found the following:
> [213184.882341] traps: dovecot-lda[6128] general protection
> ip:7ff6cf8144f7 sp:7fff5f800b30 error:0 in
> libdovecot.so.0.0.0[7ff6cf724000+360000]
>
> Sorry, not knowledgeable enough on how to do the GBD debug.
> -----------------
> We went back to previous version and issue disappeared.
>
> 8b45bb255b67:/# cat /etc/alpine-release
> 3.8.4
> 8b45bb255b67:/# apk info -v | grep dovecot
> WARNING: Ignoring APKINDEX.adfa7ceb.tar.gz: No such file or
> directory
> WARNING: Ignoring APKINDEX.efaa1f73.tar.gz: No such file or
> directory
> dovecot-2.3.6-r0
> dovecot-fts-solr-2.3.6-r0
> dovecot-ldap-2.3.6-r0
> dovecot-pigeonhole-plugin-2.3.6-r0
> dovecot-pigeonhole-plugin-ldap-2.3.6-r0
>
> Anyone else already had this problem or you know how to fix it?
I can't readily reproduce it with the information available so
far. Do you have the opportunity to obtain a GDB backtrace? You
can e.g. run LDA manually at the command line with the same
arguments and message input Postfix provides and wrap it in GDB
if you can reproduce the crash.
Your configuration may also help (output from dovecot -n)
Regards,
Stephan.