Re: [OpenSIPS-Users] Opensips crash

Denis via Users Wed, 05 Apr 2017 01:05:05 -0700

Hello, Bogdan!

f 5

#5 0x00007fdf6844c4f2 in free_dlg_dlg (dlg=0x7fdf6c4ac158) at dlg_hash.c:183

183 destroy_dlg_callbacks_list(dlg->cbs.first);

p *dlg->cbs.first

$1 = {types = 96, callback = 0x7fdf67531300 <acc_dlg_callback>, param = 0x0, callback_param_free = 0x7fdf675318fe <dlg_free_acc_mask>, next = 0x7fdf84191080}

p *dlg->cbs.first->next

$2 = {types = 96, callback = 0x7fdf67531300 <acc_dlg_callback>, param = 0x7fdf83c9f340, callback_param_free = 0x7fdf675318fe <dlg_free_acc_mask>, next = 0x0}

p *dlg->cbs.first->next->next

Cannot access memory at address 0x0

p *dlg->cbs.first->next->next->next

Cannot access memory at address 0x20

and so on with ....at address 0x20

С уважением, Денис.

Best regards, Denis

04.04.2017, 18:43, "Bogdan-Andrei Iancu" <[email protected]>:

Super :)....we got to something useful.

Now, again in GDB please do:

f 5
p *dlg->cbs.first
p *dlg->cbs.first->next
p *dlg->cbs.first->next->next

and keep adding "->next" until you get error from gdb.

Thanks,
Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  http://www.opensips-solutions.com
OpenSIPS Summit May 2017 Amsterdam
  http://www.opensips.org/events/Summit-2017Amsterdam.html
On 04/04/2017 06:07 PM, Денис Путято wrote:
Sorry, Bogdan, i missed that

I found such CRITICAL message
"CRITICAL:core:qm_free: freeing already freed pointer, first free: acc_logic.c: dlg_free_acc_mask(211) - aborting"

And after that and till crash only "WARNING:core:utimer_ticker:...." reports in syslog.

(gdb)
f 2
#2 0x0000000000515592 in qm_free (qm=<optimized out>, p=p@entry=0x7fdf83c9f340, file=file@entry=0x7fdf6753ad62 "acc_logic.c",
func=func@entry=0x7fdf6753af90 <__FUNCTION__.12529> "dlg_free_acc_mask", line=line@entry=211) at mem/q_malloc.c:483
483 abort();

p *((struct qm_frag*) ((char*)p-sizeof(struct qm_frag)))
$1 = {size = 8, u = {nxt_free = 0x7fdf71a8c6b0, is_free = 140597661320880}, file = 0x7fdf6753ad62 "acc_logic.c", func = 0x7fdf6753af90 <__FUNCTION__.12529> "dlg_free_acc_mask", line = 211,
check = 17361641481138401520}

--
С уважением, Денис.
Best regards, Denis

04.04.2017, 17:58, "Bogdan-Andrei Iancu" <[email protected]>:
The RADIUS part is not relevant.

Still you didn;t answer to my question on the CRITICAL error - according to the backtrace, you should have a CRITICAL message in the opensips log, just before the crash.

In GDB, do:
f 2
p *((struct qm_frag*) ((char*)p-sizeof(struct qm_frag)))

Regards,
Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  http://www.opensips-solutions.com

OpenSIPS Summit May 2017 Amsterdam
  http://www.opensips.org/events/Summit-2017Amsterdam.html
On 04/04/2017 05:55 PM, Denis wrote:
During crash there was another problem with LAN network.
Because of this problem Opensips could not connect to radius server.
rc_ip_hostname: couldn't look up host by addr: xxxxxx
rc_send_server: no reply from RADIUS server unknown:1812

No more critical messages.

Bogdan, i am sorry, but
"in frame 2". What does it mean?

--
С уважением, Денис.
Best regards, Denis

04.04.2017, 16:35, "Bogdan-Andrei Iancu" <[email protected]>:
Any CRITICAL message into the log before the crash ?

also, in gdb in frame 2, please print:
p *((struct qm_frag*) ((char*)p-sizeof(struct qm_frag)))

Thanks,
Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  http://www.opensips-solutions.com

OpenSIPS Summit May 2017 Amsterdam
  http://www.opensips.org/events/Summit-2017Amsterdam.html
On 04/04/2017 03:19 PM, Denis wrote:
p shm_block->first_frag
$1 = (struct qm_frag *) 0x7fdf6b9d44f8

p shm_block->last_frag_end
$2 = (struct qm_frag_end *) 0x7fe02899efd0

p mem_block->first_frag
$3 = (struct qm_frag *) 0x7fe029214508

p mem_block->last_frag_end
$4 = (struct qm_frag_end *) 0x7fe0691defe0

--
С уважением, Денис.
Best regards, Denis

04.04.2017, 14:51, "Bogdan-Andrei Iancu" <[email protected]>:
OK,please enter gdb and print:
    p shm_block->first_frag
    p shm_block->last_frag_end

    p mem_block->first_frag
    p mem_block->last_frag_end

Thanks,
Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  http://www.opensips-solutions.com

OpenSIPS Summit May 2017 Amsterdam
  http://www.opensips.org/events/Summit-2017Amsterdam.html
On 04/04/2017 01:42 PM, Denis wrote:
Hello, Bogdan!

No, i cannot see in the log any messages you mentioned it your letter.
The situation dealing with crash had such stage.

1. I prepared to migrate to 2.2.3 from 2.2.2. But do not have a time to restart Opensips
2. As a result "i waited" when Opensips have crashed. During crash of 2.2.2 no core file has been generated, but Opensips has been restarted using cron.
3. After 2) Opensips became 2.2.3. It was working about 1 minute and crashed again, but in that time, core file has been generated and i attached information from it.
So, between 2) and 3) , as i mentioned above, there were no messages about memory, but i see many messages like
'WARNING:core:utimer_ticker: utimer task <tm-utimer> already scheduled for 71500 ms
WARNING:core:timer_ticker: timer task <pike-clean> already scheduled for 72400 ms
WARNING:core:timer_ticker: timer task <nh-timer> already scheduled for 72400 ms
WARNING:core:timer_ticker: timer task <dlg-timer> already scheduled for 72400 ms
WARNING:core:timer_ticker: timer task <blcore-expire> already scheduled for 72400 ms'
and so on

As for about version

version: opensips 2.2.3 (x86_64/linux)
flags: STATS: On, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, QM_MALLOC, DBG_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
git revision: 7922417
main.c compiled on 06:29:28 Mar 23 2017 with gcc 5.4.0

--
С уважением, Денис.
Best regards, Denis

04.04.2017, 12:43, "Bogdan-Andrei Iancu" <[email protected]>:
Hello Denis,

Thank you for the report. Do you see any CRITICAL log just before the crash, something like:
"bad pointer 0xxxxxxxx (out of memory block!) - aborting"
?
If yes, please post here the exact line.

Also, do you use the latest OpenSIPS 2.2 from GIT repo ? (run "opensips -v")

Regards,
Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  http://www.opensips-solutions.com

OpenSIPS Summit May 2017 Amsterdam
  http://www.opensips.org/events/Summit-2017Amsterdam.html
On 04/04/2017 10:58 AM, Denis via Users wrote:
Hello!

Server:: OpenSIPS (2.2.3 (x86_64/linux))

Thank you for any help.

P.S. Opensips has been compiled with QM_MALLOC and DBG_MALLOC flags

--
С уважением, Денис.
Best regards, Denis
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Re: [OpenSIPS-Users] Opensips crash

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