[sr-dev] segfault with t_suspend() / t_continue()

[Dragos Oancea]

Hello,




I got the following coredump while doing some testing with t_suspend() and t_continue() on the first INVITE:

(gdb) bt
#0  qm_detach_free (qm=0x7fe2dae65000, size=16) at mem/q_malloc.c:269
#1  qm_malloc (qm=0x7fe2dae65000, size=16) at mem/q_malloc.c:386
#2  0x00007fe2e5e6d541 in update_totag_set (t=0x7fe2db0f42d0, ok=<value optimized out>) at t_reply.c:372
#3  0x00007fe2e5e72387 in relay_reply (t=<value optimized out>, p_msg=<value optimized out>, branch=2, msg_status=200, cancel_data=0x7fff63fdf9b0, do_put_on_wait=1) at t_reply.c:1854
#4  0x00007fe2e5e733e6 in reply_received (p_msg=0x7fe2e6a55ba0) at t_reply.c:2370
#5  0x00000000004547f5 in do_forward_reply (msg=0x7fe2e6a55ba0, mode=<value optimized out>) at forward.c:799
#6  0x000000000049a5ba in receive_msg (buf=<value optimized out>, len=961, rcv_info=0x7fff63fdfc40) at receive.c:270
#7  0x00000000005281a6 in udp_rcv_loop () at udp_server.c:544
#8  0x0000000000464d3a in main_loop () at main.c:1638
#9  0x0000000000467a6c in main (argc=<value optimized out>, argv=<value optimized out>) at main.c:2566



I suspend the transaction in one route and then I continue it in another route, similar to below:

route[INVITE]
# Suspend and put to memcache:
t_suspend();
        xlog("proceesing suspended in transaction [$T(id_index):$T(id_label)]\n");
        $var(transaction_index)=$T(id_index);
        $var(transaction_label)=$T(id_label);
        
        $mct(wait_$tU)= "" + $var(transaction_index) + ":" + $var(transaction_label);
        $mctex(wait_$tU) = 100;
}

route[INVITE_resume]  {

# get the transaction index and lable from memcache 
    $avp(check) = $mct(wait_$tU) ; # I should have the transaction index and the transaction label here 
    $var(my_transaction_index) =  $(avp(check){s.select,0,:});
    $var(my_transaction_label) =  $(avp(check){s.select,1,:});
    $var(a)= $(var(my_transaction_index){s.int});
    $var(b) = $(var(my_transaction_label){s.int});

    t_continue( "$var(a)",  "$var(b)" , "my_relay_route");
}
 

route[INVITE_resume] executes only on an asynchronous event (a certain SIP message that might come or not) . 

I use kamailio 4.0.0/Centos Linux. I suspect it happened when I sent CANCEL, but I could not reproduce. I still have the core file.

Regards,
Dragos
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-dev/attachments/20130404/eb92aaca/attachment-0001.htm>