[OpenSIPS-Users] Strange segfault when calling check_fraud

[Jim DeVito]

Seems like it happen while opensips is still starting (loading the dr_ 
tables into memory) when the first INVITE comes across the check_fraud() 
function. I can comment out the check_fraud() and it is just fine.

version: opensips 2.2.2 (x86_64/linux)
flags: STATS: On, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, 
F_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.
main.c compiled on 00:00:54 Oct 20 2016 with gcc 4.8.5

Thanks!!

---
Jim DeVito


On 2016-11-04 09:30, Liviu Chircu wrote:
> Thank you, Jim! The backtrace is very helpful.
> 
> Could you give a bit more details about how you are triggering this
> bug? Could it be right after you are starting OpenSIPS?
> 
> Also, pasting the output of `opensips -V` could help as well.
> 
> Regards,
> 
> Liviu Chircu
> OpenSIPS Developer
> http://www.opensips-solutions.com
> 
> On 04.11.2016 17:34, Jim DeVito wrote:
>> Thanks for the tip Liviu!
>> 
>> I was able to get the full core file and paseted below is the back 
>> trace. Let me know if this can help track down what is going on.
>> 
>> http://pastebin.com/m7LfVHqJ
>> 
>> Thanks!!
>> 
>> ---
>> Jim DeVito
>> 
>> On 2016-11-04 08:08, Liviu Chircu wrote:
>>> Hi, Jim!
>>> 
>>> It appears that OpenSIPS is either getting restarted too quickly or
>>> runs out of disk space before it is able to fully write the 3 GB
>>> corefile. If the size of your drouting data allows it, you could
>>> reduce the corefile size by shrinking the shared memory pool OpenSIPS
>>> starts with.
>>> 
>>> Regards,
>>> 
>>> Liviu Chircu
>>> OpenSIPS Developer
>>> http://www.opensips-solutions.com
>>> 
>>> On 04.11.2016 16:15, Jim DeVito wrote:
>>>> Hi All,
>>>> 
>>>> Wondering if you have seen something like this. It happens when 
>>>> calling check_fraud() like this...
>>>> 
>>>> check_fraud("$fU", "$rU", "1");
>>>> 
>>>> I can reproduce it on 2 of my 3 servers. Let me know if there is 
>>>> other debugging info that may be needed.
>>>> 
>>>> Thanks!!
>>>> 
>>>> Nov  4 13:55:17 sip-proxy02 kernel: opensips[5257]: segfault at 0 ip 
>>>> 00007f619d94ff2e sp 00007ffee6ccd718 error 4 in 
>>>> drouting.so[7f619d947000+38000]
>>>> Nov  4 13:55:17 sip-proxy02 kernel: opensips[5256]: segfault at 0 ip 
>>>> 00007f619d94ff2e sp 00007ffee6ccd718 error 4 in 
>>>> drouting.so[7f619d947000+38000]
>>>> Nov  4 13:55:18 sip-proxy02 kernel: opensips[5260]: segfault at 0 ip 
>>>> 00007f619d94ff2e sp 00007ffee6ccd718 error 4 in 
>>>> drouting.so[7f619d947000+38000]
>>>> Nov  4 13:55:18 sip-proxy02 kernel: opensips[5254]: segfault at 0 ip 
>>>> 00007f619d94ff2e sp 00007ffee6ccd718 error 4 in 
>>>> drouting.so[7f619d947000+38000]
>>>> Nov  4 13:55:18 sip-proxy02 kernel: opensips[5259]: segfault at 0 ip 
>>>> 00007f619d94ff2e sp 00007ffee6ccd718 error 4 in 
>>>> drouting.so[7f619d947000+38000]
>>>> 
>>>> [root at sip-proxy02 ~]# gdb /var/tmp/core.5257
>>>> GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
>>>> 
>>>> This GDB was configured as "x86_64-redhat-linux-gnu".
>>>> 
>>>> BFD: Warning: /var/tmp/core.5257 is truncated: expected core file 
>>>> size >= 3226677248, found: 1183989760.
>>>> BFD: Warning: /var/tmp/core.5257 is truncated: expected core file 
>>>> size >= 3226677248, found: 1183989760.
>>>> [New LWP 5257]
>>>> Reading symbols from /usr/sbin/opensips...Reading symbols from 
>>>> /usr/lib/debug/usr/sbin/opensips.debug...done.
>>>> done.
>>>> Cannot access memory at address 0x7f62635a71e8
>>>> Cannot access memory at address 0x7f62635a71e0
>>>> (gdb) bt full
>>>> Python Exception <class 'gdb.MemoryError'> Cannot access memory at 
>>>> address 0x7ffee6ccd718:
>>>> 
>>>> [root at sip-proxy02 ~]# yum list installed | grep opensips
>>>> opensips.x86_64 2.2.2-1.el7                    @opensips
>>>> opensips-db_mysql.x86_64 2.2.2-1.el7 @opensips
>>>> opensips-debuginfo.x86_64 2.2.2-1.el7 @opensips
>>>> opensips-event_route.x86_64 2.2.2-1.el7 @opensips
>>>> opensips-fraud_detection.x86_64 2.2.2-1.el7 @opensips
>>>> opensips-rest_client.x86_64 2.2.2-1.el7 @opensips
>>>> opensips-yum-releases.noarch 2.2-3.el7 
>>>> @/opensips-yum-releases-2.2-3.el7.noarch
>>>> 
>>> 
>>> 
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