[kamailio/kamailio] Dead Lock running on RockyLinux 8.7 on AWS virtual machine (Issue #3438) - sr-dev

5 May 2023


      ### Description
I have a script that using dispatcher to 4 destination Asterisk machines, the system have maximum 300 calls, I am using RockyLinux 8.7 on AWS VM, the machine is very powerfull.
I am using rtpengine with no trancoding, the works fine per hours but from nowhere Kamailio enter a somekind dead lock state, do not process SIP traffic anymore, I need to restart Kamailio in this case.
### Troubleshooting
I removed all thing that i do not need right now, link cdr and dialog modules, but no effect.
This the first time in years using Kamailio thats happening to me, sorry if I not send the apropriated information.
#### Reproduction
The problem happens only on AWS virtual machine, I can´t reproduce on my RockyLinux VM using Virtual Box. The system is on production and I have hard time  now...
#### Debugging Data
trace of the moment of dead lock
{
  "jsonrpc":  "2.0",
  "result": [
    {
      "IDX":  0,
      "PID":  38052,
      "DSC":  "main process - attendant"
    }, {
      "IDX":  1,
      "PID":  38056,
      "DSC":  "udp receiver child=0 sock=172.28.31.52:5060"
    }, {
      "IDX":  2,
      "PID":  38057,
      "DSC":  "udp receiver child=1 sock=172.28.31.52:5060"
    }, {
      "IDX":  3,
      "PID":  38058,
      "DSC":  "udp receiver child=2 sock=172.28.31.52:5060"
    }, {
      "IDX":  4,
      "PID":  38059,
      "DSC":  "udp receiver child=3 sock=172.28.31.52:5060"
    }, {
      "IDX":  5,
      "PID":  38060,
      "DSC":  "udp receiver child=4 sock=172.28.31.52:5060"
    }, {
      "IDX":  6,
      "PID":  38061,
      "DSC":  "udp receiver child=5 sock=172.28.31.52:5060"
    }, {
      "IDX":  7,
      "PID":  38062,
      "DSC":  "udp receiver child=6 sock=172.28.31.52:5060"
    }, {
      "IDX":  8,
      "PID":  38063,
      "DSC":  "udp receiver child=7 sock=172.28.31.52:5060"
    }, {
      "IDX":  9,
      "PID":  38064,
      "DSC":  "slow timer"
    }, {
      "IDX":  10,
      "PID":  38065,
      "DSC":  "timer"
    }, {
      "IDX":  11,
      "PID":  38066,
      "DSC":  "secondary timer"
    }, {
      "IDX":  12,
      "PID":  38067,
      "DSC":  "JSONRPCS FIFO"
    }, {
      "IDX":  13,
      "PID":  38068,
      "DSC":  "JSONRPCS DATAGRAM"
    }, {
      "IDX":  14,
      "PID":  38069,
      "DSC":  "USRLOC Timer"
    }, {
      "IDX":  15,
      "PID":  38070,
      "DSC":  "ctl handler"
    }, {
      "IDX":  16,
      "PID":  38071,
      "DSC":  "RTIMER EXEC child=0 timer=timer_caps"
    }, {
      "IDX":  17,
      "PID":  38072,
      "DSC":  "TIMER NH"
    }, {
      "IDX":  18,
      "PID":  38073,
      "DSC":  "tcp receiver (generic) child=0"
    }, {
      "IDX":  19,
      "PID":  38074,
      "DSC":  "tcp main process"
    }
  ],
  "id": 54180
}
---start 38052 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68852315 in pause () from /lib64/libpthread.so.0
#0  0x00007fde68852315 in pause () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000042fbb2 in main_loop ()
No symbol table info available.
#2  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38052) detached]
---end 38052 -------------------------------------------------------
---start 38056 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38056) detached]
---end 38056 -------------------------------------------------------
---start 38057 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38057) detached]
---end 38057 -------------------------------------------------------
---start 38058 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38058) detached]
---end 38058 -------------------------------------------------------
---start 38059 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38059) detached]
---end 38059 -------------------------------------------------------
---start 38060 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38060) detached]
---end 38060 -------------------------------------------------------
---start 38061 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38061) detached]
---end 38061 -------------------------------------------------------
---start 38062 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38062) detached]
---end 38062 -------------------------------------------------------
---start 38063 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
#0  0x00007fde68851da8 in recvfrom () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000052a25f in udp_rcv_loop ()
No symbol table info available.
#2  0x000000000042cb4b in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38063) detached]
---end 38063 -------------------------------------------------------
---start 38064 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde684c986f in sigtimedwait () from /lib64/libc.so.6
#0  0x00007fde684c986f in sigtimedwait () from /lib64/libc.so.6
No symbol table info available.
#1  0x000000000055b7a6 in slow_timer_main ()
No symbol table info available.
#2  0x000000000042e3e1 in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38064) detached]
---end 38064 -------------------------------------------------------
---start 38065 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68852315 in pause () from /lib64/libpthread.so.0
#0  0x00007fde68852315 in pause () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x000000000055b07c in timer_main ()
No symbol table info available.
#2  0x000000000042e74e in main_loop ()
No symbol table info available.
#3  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38065) detached]
---end 38065 -------------------------------------------------------
---start 38066 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde685a17db in select () from /lib64/libc.so.6
#0  0x00007fde685a17db in select () from /lib64/libc.so.6
No symbol table info available.
#1  0x000000000069ce04 in sleep_us ()
No symbol table info available.
#2  0x000000000069d30d in fork_sync_timer ()
No symbol table info available.
#3  0x000000000069e64d in sr_wtimer_start ()
No symbol table info available.
#4  0x000000000042e753 in main_loop ()
No symbol table info available.
#5  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38066) detached]
---end 38066 -------------------------------------------------------
---start 38067 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde6859ab25 in read () from /lib64/libc.so.6
#0  0x00007fde6859ab25 in read () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fde6850dfc8 in __GI__IO_file_underflow () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007fde6850d0d8 in __GI__IO_file_xsgetn () from /lib64/libc.so.6
No symbol table info available.
#3  0x00007fde685020db in fread () from /lib64/libc.so.6
No symbol table info available.
#4  0x00007fde629ec512 in jsonrpc_read_stream () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#5  0x00007fde629f06c1 in jsonrpc_fifo_server () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#6  0x00007fde629f256c in jsonrpc_fifo_process () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#7  0x00007fde629f3bd7 in jsonrpc_fifo_child_init () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#8  0x00007fde62a11d3f in child_init () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#9  0x00000000006085d5 in init_mod_child ()
No symbol table info available.
#10 0x000000000060822a in init_mod_child ()
No symbol table info available.
#11 0x000000000060822a in init_mod_child ()
No symbol table info available.
#12 0x000000000060822a in init_mod_child ()
No symbol table info available.
#13 0x000000000060822a in init_mod_child ()
No symbol table info available.
#14 0x000000000060822a in init_mod_child ()
No symbol table info available.
#15 0x000000000060822a in init_mod_child ()
No symbol table info available.
#16 0x000000000060822a in init_mod_child ()
No symbol table info available.
#17 0x000000000060822a in init_mod_child ()
No symbol table info available.
#18 0x000000000060822a in init_mod_child ()
No symbol table info available.
#19 0x000000000060822a in init_mod_child ()
No symbol table info available.
#20 0x000000000060822a in init_mod_child ()
No symbol table info available.
#21 0x000000000060822a in init_mod_child ()
No symbol table info available.
#22 0x000000000060822a in init_mod_child ()
No symbol table info available.
#23 0x000000000060822a in init_mod_child ()
No symbol table info available.
#24 0x000000000060822a in init_mod_child ()
No symbol table info available.
#25 0x000000000060822a in init_mod_child ()
No symbol table info available.
#26 0x000000000060822a in init_mod_child ()
No symbol table info available.
#27 0x000000000060822a in init_mod_child ()
No symbol table info available.
#28 0x000000000060822a in init_mod_child ()
No symbol table info available.
#29 0x000000000060822a in init_mod_child ()
No symbol table info available.
#30 0x000000000060822a in init_mod_child ()
No symbol table info available.
#31 0x000000000060822a in init_mod_child ()
No symbol table info available.
#32 0x000000000060822a in init_mod_child ()
No symbol table info available.
#33 0x000000000060822a in init_mod_child ()
No symbol table info available.
#34 0x000000000060822a in init_mod_child ()
No symbol table info available.
#35 0x000000000060822a in init_mod_child ()
No symbol table info available.
#36 0x000000000060822a in init_mod_child ()
No symbol table info available.
#37 0x0000000000608de7 in init_child ()
No symbol table info available.
#38 0x000000000042ea6c in main_loop ()
No symbol table info available.
#39 0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38067) detached]
---end 38067 -------------------------------------------------------
---start 38068 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde685a17db in select () from /lib64/libc.so.6
#0  0x00007fde685a17db in select () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fde62a01472 in jsonrpc_dgram_server () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#2  0x00007fde629ffaea in jsonrpc_dgram_process () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#3  0x00007fde629ffb6d in jsonrpc_dgram_child_init () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#4  0x00007fde62a120b8 in child_init () from /usr/lib64/kamailio/modules/jsonrpcs.so
No symbol table info available.
#5  0x00000000006085d5 in init_mod_child ()
No symbol table info available.
#6  0x000000000060822a in init_mod_child ()
No symbol table info available.
#7  0x000000000060822a in init_mod_child ()
No symbol table info available.
#8  0x000000000060822a in init_mod_child ()
No symbol table info available.
#9  0x000000000060822a in init_mod_child ()
No symbol table info available.
#10 0x000000000060822a in init_mod_child ()
No symbol table info available.
#11 0x000000000060822a in init_mod_child ()
No symbol table info available.
#12 0x000000000060822a in init_mod_child ()
No symbol table info available.
#13 0x000000000060822a in init_mod_child ()
No symbol table info available.
#14 0x000000000060822a in init_mod_child ()
No symbol table info available.
#15 0x000000000060822a in init_mod_child ()
No symbol table info available.
#16 0x000000000060822a in init_mod_child ()
No symbol table info available.
#17 0x000000000060822a in init_mod_child ()
No symbol table info available.
#18 0x000000000060822a in init_mod_child ()
No symbol table info available.
#19 0x000000000060822a in init_mod_child ()
No symbol table info available.
#20 0x000000000060822a in init_mod_child ()
No symbol table info available.
#21 0x000000000060822a in init_mod_child ()
No symbol table info available.
#22 0x000000000060822a in init_mod_child ()
No symbol table info available.
#23 0x000000000060822a in init_mod_child ()
No symbol table info available.
#24 0x000000000060822a in init_mod_child ()
No symbol table info available.
#25 0x000000000060822a in init_mod_child ()
No symbol table info available.
#26 0x000000000060822a in init_mod_child ()
No symbol table info available.
#27 0x000000000060822a in init_mod_child ()
No symbol table info available.
#28 0x000000000060822a in init_mod_child ()
No symbol table info available.
#29 0x000000000060822a in init_mod_child ()
No symbol table info available.
#30 0x000000000060822a in init_mod_child ()
No symbol table info available.
#31 0x000000000060822a in init_mod_child ()
No symbol table info available.
#32 0x000000000060822a in init_mod_child ()
No symbol table info available.
#33 0x0000000000608de7 in init_child ()
No symbol table info available.
#34 0x000000000042ea6c in main_loop ()
No symbol table info available.
#35 0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38068) detached]
---end 38068 -------------------------------------------------------
---start 38069 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde685a17db in select () from /lib64/libc.so.6
#0  0x00007fde685a17db in select () from /lib64/libc.so.6
No symbol table info available.
#1  0x000000000069ce04 in sleep_us ()
No symbol table info available.
#2  0x000000000069d30d in fork_sync_timer ()
No symbol table info available.
#3  0x00007fde61049eee in child_init () from /usr/lib64/kamailio/modules/usrloc.so
No symbol table info available.
#4  0x00000000006085d5 in init_mod_child ()
No symbol table info available.
#5  0x000000000060822a in init_mod_child ()
No symbol table info available.
#6  0x000000000060822a in init_mod_child ()
No symbol table info available.
#7  0x000000000060822a in init_mod_child ()
No symbol table info available.
#8  0x000000000060822a in init_mod_child ()
No symbol table info available.
#9  0x000000000060822a in init_mod_child ()
No symbol table info available.
#10 0x000000000060822a in init_mod_child ()
No symbol table info available.
#11 0x000000000060822a in init_mod_child ()
No symbol table info available.
#12 0x000000000060822a in init_mod_child ()
No symbol table info available.
#13 0x000000000060822a in init_mod_child ()
No symbol table info available.
#14 0x000000000060822a in init_mod_child ()
No symbol table info available.
#15 0x000000000060822a in init_mod_child ()
No symbol table info available.
#16 0x000000000060822a in init_mod_child ()
No symbol table info available.
#17 0x000000000060822a in init_mod_child ()
No symbol table info available.
#18 0x000000000060822a in init_mod_child ()
No symbol table info available.
#19 0x000000000060822a in init_mod_child ()
No symbol table info available.
#20 0x000000000060822a in init_mod_child ()
No symbol table info available.
#21 0x000000000060822a in init_mod_child ()
No symbol table info available.
#22 0x0000000000608de7 in init_child ()
No symbol table info available.
#23 0x000000000042ea6c in main_loop ()
No symbol table info available.
#24 0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38069) detached]
---end 38069 -------------------------------------------------------
---start 38070 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde685a9feb in epoll_wait () from /lib64/libc.so.6
#0  0x00007fde685a9feb in epoll_wait () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fde5fe2a38b in io_wait_loop_epoll () from /usr/lib64/kamailio/modules/ctl.so
No symbol table info available.
#2  0x00007fde5fe2ee60 in io_listen_loop () from /usr/lib64/kamailio/modules/ctl.so
No symbol table info available.
#3  0x00007fde5fe4e90e in mod_child () from /usr/lib64/kamailio/modules/ctl.so
No symbol table info available.
#4  0x00000000006085d5 in init_mod_child ()
No symbol table info available.
#5  0x000000000060822a in init_mod_child ()
No symbol table info available.
#6  0x000000000060822a in init_mod_child ()
No symbol table info available.
#7  0x000000000060822a in init_mod_child ()
No symbol table info available.
#8  0x000000000060822a in init_mod_child ()
No symbol table info available.
#9  0x000000000060822a in init_mod_child ()
No symbol table info available.
#10 0x000000000060822a in init_mod_child ()
No symbol table info available.
#11 0x000000000060822a in init_mod_child ()
No symbol table info available.
#12 0x000000000060822a in init_mod_child ()
No symbol table info available.
#13 0x000000000060822a in init_mod_child ()
No symbol table info available.
#14 0x000000000060822a in init_mod_child ()
No symbol table info available.
#15 0x0000000000608de7 in init_child ()
No symbol table info available.
#16 0x000000000042ea6c in main_loop ()
No symbol table info available.
#17 0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38070) detached]
---end 38070 -------------------------------------------------------
---start 38071 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68574988 in nanosleep () from /lib64/libc.so.6
#0  0x00007fde68574988 in nanosleep () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fde685748be in sleep () from /lib64/libc.so.6
No symbol table info available.
#2  0x000000000069cf5a in fork_basic_timer_w ()
No symbol table info available.
#3  0x00007fde5f58d1e1 in child_init () from /usr/lib64/kamailio/modules/rtimer.so
No symbol table info available.
#4  0x00000000006085d5 in init_mod_child ()
No symbol table info available.
#5  0x000000000060822a in init_mod_child ()
No symbol table info available.
#6  0x000000000060822a in init_mod_child ()
No symbol table info available.
#7  0x000000000060822a in init_mod_child ()
No symbol table info available.
#8  0x000000000060822a in init_mod_child ()
No symbol table info available.
#9  0x000000000060822a in init_mod_child ()
No symbol table info available.
#10 0x000000000060822a in init_mod_child ()
No symbol table info available.
#11 0x0000000000608de7 in init_child ()
No symbol table info available.
#12 0x000000000042ea6c in main_loop ()
No symbol table info available.
#13 0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38071) detached]
---end 38071 -------------------------------------------------------
---start 38072 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde68574988 in nanosleep () from /lib64/libc.so.6
#0  0x00007fde68574988 in nanosleep () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fde685748be in sleep () from /lib64/libc.so.6
No symbol table info available.
#2  0x000000000069ce9a in fork_basic_timer ()
No symbol table info available.
#3  0x00007fde5e80b672 in child_init () from /usr/lib64/kamailio/modules/nathelper.so
No symbol table info available.
#4  0x00000000006085d5 in init_mod_child ()
No symbol table info available.
#5  0x000000000060822a in init_mod_child ()
No symbol table info available.
#6  0x0000000000608de7 in init_child ()
No symbol table info available.
#7  0x000000000042ea6c in main_loop ()
No symbol table info available.
#8  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38072) detached]
---end 38072 -------------------------------------------------------
---start 38073 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde685a9feb in epoll_wait () from /lib64/libc.so.6
#0  0x00007fde685a9feb in epoll_wait () from /lib64/libc.so.6
No symbol table info available.
#1  0x0000000000441419 in io_wait_loop_epoll ()
No symbol table info available.
#2  0x0000000000456b20 in tcp_receive_loop ()
No symbol table info available.
#3  0x00000000005b026b in tcp_init_children ()
No symbol table info available.
#4  0x000000000042ed98 in main_loop ()
No symbol table info available.
#5  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38073) detached]
---end 38073 -------------------------------------------------------
---start 38074 -----------------------------------------------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007fde685a9feb in epoll_wait () from /lib64/libc.so.6
#0  0x00007fde685a9feb in epoll_wait () from /lib64/libc.so.6
No symbol table info available.
#1  0x000000000056efc4 in io_wait_loop_epoll ()
No symbol table info available.
#2  0x00000000005ab8e5 in tcp_main_loop ()
No symbol table info available.
#3  0x000000000042f11a in main_loop ()
No symbol table info available.
#4  0x0000000000438d14 in main ()
No symbol table info available.
[Inferior 1 (process 38074) detached]
---end 38074 -------------------------------------------------------
Kamailio log
========
The importante thing here is that all dispatcher destination are offline, but there is no such thing, because the network was fine in the moment, i suspect the Kamailio process that waiting for SIP OPTIONS reply just log the erro because i have a callback for this type of situation on my script.
Sorry the log in the moment of problem is too low.
Line 11371: May  5 06:00:02 ip-172-28-31-52 systemd[1]: Started Kamailio - the Open Source SIP Server.
    Line 11373: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]: INFO: rtimer [rtimer_mod.c:313]: stm_t_param(): created rtimer name=timer_caps interval=1 mode=1
    Line 11374: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]: INFO: <core> [core/tcp_main.c:5073]: init_tcp(): using epoll_lt as the io watch method (auto detected)
    Line 11375: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]: Listening on
    Line 11376: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]:             udp: 172.28.31.52:5060
    Line 11377: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]:             tcp: 172.28.31.52:8181
    Line 11378: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]: Aliases:
    Line 11379: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]:             tcp: ip-172-28-31-52.sa-east-1.compute.internal:8181
    Line 11380: May  5 06:00:02 ip-172-28-31-52 kamailio[38052]:             udp: ip-172-28-31-52.sa-east-1.compute.internal:5060
    Line 11381: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: rr [../outbound/api.h:52]: ob_load_api(): unable to import bind_ob - maybe module is not loaded
    Line 11382: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: rr [rr_mod.c:188]: mod_init(): outbound module not available
    Line 11383: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: db_text [dbt_lib.c:146]: dbt_cache_get_db(): using database at: /etc/kamailio/sipproxy
    Line 11383: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: db_text [dbt_lib.c:146]: dbt_cache_get_db(): using database at: /etc/kamailio/sipproxy
    Line 11384: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: <core> [main.c:3055]: main(): processes (at least): 20 - shm size: 1073741824 - pkg size: 67108864
    Line 11385: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: <core> [core/udp_server.c:154]: probe_max_receive_buffer(): SO_RCVBUF is initially 212992 for fd 9
    Line 11386: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38052]: INFO: <core> [core/udp_server.c:207]: probe_max_receive_buffer(): SO_RCVBUF is finally 425984 on fd 9
    Line 11387: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38056]: INFO: rtpengine [rtpengine.c:2929]: rtpp_test(): rtpengine instance udp:127.0.0.1:2223 found, support for it enabled
    Line 11388: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38068]: INFO: jsonrpcs [jsonrpcs_sock.c:443]: jsonrpc_dgram_process(): a new child 0/38068
    Line 11389: May  5 06:00:02 ip-172-28-31-52 /usr/sbin/kamailio[38070]: INFO: ctl [io_listener.c:214]: io_listen_loop(): io_listen_loop:  using epoll_lt io watch method (config)
    Line 11460: May  5 06:08:41 ip-172-28-31-52 /usr/sbin/kamailio[38060]: INFO: {1 12348 CANCEL c5188ed9-d22d-49b6-8bfb-26155ac739aa} tm [t_reply.c:486]: _reply_light(): can't generate 487 reply when a final 200 was sent out
    Line 11506: May  5 06:12:32 ip-172-28-31-52 dnf[38761]: Kamailio - x86_64                               359 kB/s | 2.9 kB     00:00
    Line 13191: May  5 08:40:45 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {2 26558 INVITE a35326f0-40a9-4d4b-abff-76ffcd526e77} rtpengine [rtpengine.c:2767]: rtpp_function_call(): proxy replied with error: Unknown call-id
    Line 16923: May  5 10:40:20 ip-172-28-31-52 /usr/sbin/kamailio[38064]: ERROR: <script>: Destination down: OPTIONS sip:172.28.31.143:5060;transport=udp
    Line 16924: May  5 10:40:20 ip-172-28-31-52 /usr/sbin/kamailio[38064]: ERROR: <script>: Destination down: OPTIONS sip:172.28.31.142:5060;transport=udp
    Line 16925: May  5 10:40:20 ip-172-28-31-52 /usr/sbin/kamailio[38064]: ERROR: <script>: Destination down: OPTIONS sip:172.28.31.141:5060;transport=udp
    Line 16926: May  5 10:40:20 ip-172-28-31-52 /usr/sbin/kamailio[38064]: ERROR: <script>: Destination down: OPTIONS sip:172.28.31.140:5060;transport=udp
    Line 16979: May  5 10:42:48 ip-172-28-31-52 /usr/sbin/kamailio[38065]: ERROR: {1 282370177 INVITE )1eV6483910050tybeGhEfDrDgD0g@BC00.ZRJO08.TIM} <script>: there are no routes
    Line 17064: May  5 10:49:43 ip-172-28-31-52 dnf[53925]: Kamailio - x86_64                               310 kB/s | 2.9 kB     00:00
    Line 17111: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38056]: INFO: {2 10 OPTIONS 5b065ede75adeb22-38066@172.28.31.52} <script>: Destination up: OPTIONS sip:172.28.31.143:5060;transport=udp
    Line 17112: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38060]: INFO: {2 10 OPTIONS 5b065ede75adeb24-38066@172.28.31.52} <script>: Destination up: OPTIONS sip:172.28.31.141:5060;transport=udp
    Line 17113: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38058]: INFO: {2 10 OPTIONS 5b065ede75adeb23-38066@172.28.31.52} <script>: Destination up: OPTIONS sip:172.28.31.142:5060;transport=udp
    Line 17114: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38057]: INFO: {2 10 OPTIONS 5b065ede75adeb25-38066@172.28.31.52} <script>: Destination up: OPTIONS sip:172.28.31.140:5060;transport=udp
    Line 17115: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 16583 INVITE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "offer" to RTPEngine udp:127.0.0.1:2223
    Line 17116: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 16583 INVITE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:3353]: select_rtpp_node(): rtpengine node for callid=b61320ad-4588-4fcc-8548-c082d2afd12b is known (udp:127.0.0.1:2223) but it has already been queried, therefore not returning it
    Line 17117: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 16583 INVITE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17118: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38059]: ERROR: {1 16583 INVITE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17119: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38058]: ERROR: {1 9086 INVITE 25d5140d-b097-4577-9ccb-709818eed73a} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17120: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38061]: ERROR: {1 9086 INVITE 25d5140d-b097-4577-9ccb-709818eed73a} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17121: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38057]: ERROR: {1 16584 BYE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17122: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38057]: ERROR: {1 16584 BYE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17123: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {2 16584 BYE b61320ad-4588-4fcc-8548-c082d2afd12b} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17124: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 9087 BYE 25d5140d-b097-4577-9ccb-709818eed73a} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17125: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 9087 BYE 25d5140d-b097-4577-9ccb-709818eed73a} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17126: May  5 10:53:32 ip-172-28-31-52 /usr/sbin/kamailio[38059]: ERROR: {2 9087 BYE 25d5140d-b097-4577-9ccb-709818eed73a} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17127: May  5 10:53:33 ip-172-28-31-52 /usr/sbin/kamailio[38058]: ERROR: {1 9236 INVITE 90ba24c7-7390-42b0-8795-3415dce47281} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17128: May  5 10:53:33 ip-172-28-31-52 /usr/sbin/kamailio[38061]: ERROR: {1 9236 INVITE 90ba24c7-7390-42b0-8795-3415dce47281} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17129: May  5 10:53:33 ip-172-28-31-52 /usr/sbin/kamailio[38057]: ERROR: {1 9237 BYE 90ba24c7-7390-42b0-8795-3415dce47281} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17130: May  5 10:53:33 ip-172-28-31-52 /usr/sbin/kamailio[38057]: ERROR: {1 9237 BYE 90ba24c7-7390-42b0-8795-3415dce47281} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17131: May  5 10:53:33 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {2 9237 BYE 90ba24c7-7390-42b0-8795-3415dce47281} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17134: May  5 10:53:35 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {1 102 INVITE 18d25c19-1042-426b-b810-7411f61b0467} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17135: May  5 10:53:35 ip-172-28-31-52 /usr/sbin/kamailio[38061]: ERROR: {2 102 INVITE 18d25c19-1042-426b-b810-7411f61b0467} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17136: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {1 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17137: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {1 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17138: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {1 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=12eac28a-ec67-4c0d-994c-fefabe1ea817
    Line 17139: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {1 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17140: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17141: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17142: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=43585607-620b-4a77-a755-250eefc74e9e
    Line 17143: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38056]: ERROR: {1 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17144: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {2 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17145: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {2 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17146: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {2 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=12eac28a-ec67-4c0d-994c-fefabe1ea817
    Line 17147: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {2 26715 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17148: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {1 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17149: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {1 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17150: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {1 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=12eac28a-ec67-4c0d-994c-fefabe1ea817
    Line 17151: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {1 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17152: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {2 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17153: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {2 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17154: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {2 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=12eac28a-ec67-4c0d-994c-fefabe1ea817
    Line 17155: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38062]: ERROR: {2 26716 INVITE 12eac28a-ec67-4c0d-994c-fefabe1ea817} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17156: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38058]: ERROR: {2 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17157: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38058]: ERROR: {2 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17158: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38058]: ERROR: {2 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=43585607-620b-4a77-a755-250eefc74e9e
    Line 17159: May  5 10:53:36 ip-172-28-31-52 /usr/sbin/kamailio[38058]: ERROR: {2 5085 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17160: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {1 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17161: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {1 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17162: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {1 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=43585607-620b-4a77-a755-250eefc74e9e
    Line 17163: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38063]: ERROR: {1 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17164: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {2 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine udp:127.0.0.1:2223
    Line 17165: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {2 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
    Line 17166: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {2 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:3365]: select_rtpp_node(): rtpengine failed to select new for calllen=36 callid=43585607-620b-4a77-a755-250eefc74e9e
    Line 17167: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38060]: ERROR: {2 5086 INVITE 43585607-620b-4a77-a755-250eefc74e9e} rtpengine [rtpengine.c:2706]: rtpp_function_call(): no available proxies
    Line 17168: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38056]: INFO: <core> [main.c:854]: sig_usr(): signal 15 received
    Line 17169: May  5 10:53:37 ip-172-28-31-52 systemd[1]: Stopping Kamailio - the Open Source SIP Server...
    Line 17170: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38057]: INFO: <core> [main.c:854]: sig_usr(): signal 15 received
    Line 17171: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38058]: INFO: <core> [main.c:854]: sig_usr(): signal 15 received
    Line 17172: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38059]: INFO: <core> [main.c:854]: sig_usr(): signal 15 received
    Line 17173: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38063]: INFO: <core> [main.c:854]: sig_usr(): signal 15 received
    Line 17174: May  5 10:53:37 ip-172-28-31-52 /usr/sbin/kamailio[38052]: NOTICE: <core> [main.c:733]: handle_sigs(): Thank you for flying kamailio!!!
    
<!--
Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
#### SIP Traffic
<!--
If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
(paste your sip traffic here)
```
Sorry I do not have the sip traffic this time.
### Possible Solutions
Only restart Kamailio for now.
### Additional Information
version: kamailio 5.6.4 (x86_64/linux) a004cf
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: a004cf
compiled on 12:47:38 Feb 27 2023 with gcc 8.5.0
* **Operating System**:
RockyLinux 8.7
4.18.0-425.19.2.el8_7.x86_64 #1 SMP Tue Apr 4 22:38:11 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
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