I have a problem in production environment where I have two SIP Proxies and both had the same problem but I don't have a ideia about root cause that triggered it.

Unfortunately I don't have  a core dump file because it was truncated for don't have space enough in file system. So I only have loggings filesin DEBUG level.

The proxy_1 apparently was processing a SUBSCRIBE request and the proxy_2 was processing a DMQ messages. Both of proxies crashed after appear this line in logging file
" CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 10"

What could trigger this error?

The loggin of proxy_1 is following:

2020-01-28 05:17:37.058  INFO: <script>: New request - M=SUBSCRIBE R=sip:172.29.213.10:5070 F=sip:9147323151@businesshostedvoice.com:5061 T=sip:9147323156@busine
sshostedvoice.com:5061 IP=udp:10.159.0.25:5060 ID=0gQAAC8WAAACBAAALxYAAJmTUrVeFdEMSouFoeDnzdKbnqZHYs2tiFs+Okphqx4p@10.159.0.25 CSeq=20830
2020-01-28 05:17:37.058  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f3f97a41000, 74) called from core: core/usr_avp.c: create_avp(175)
2020-01-28 05:17:37.058  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f3f97a41000, 80) returns address 0x7f3fb4365df8 frag. 0x7f3fb4365dc0
(size=80) on 1 -th hit
2020-01-28 05:17:37.058  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f3f97a41000, 52) called from core: core/usr_avp.c: create_avp(175)
2020-01-28 05:17:37.058  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f3f97a41000, 56) returns address 0x7f3fb7c8ef08 frag. 0x7f3fb7c8eed0
(size=56) on 1 -th hit
2020-01-28 05:17:37.058  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f3f97a41000, 67) called from core: core/usr_avp.c: create_avp(175)
2020-01-28 05:17:37.058  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f3f97a41000, 72) returns address 0x7f3fd2bc8928 frag. 0x7f3fd2bc88f0
(size=72) on 1 -th hit
2020-01-28 05:17:37.059  INFO: <script>: Applying rewrite rules on '9147323156' using dialplan 'DB_MANIPS' - R=sip:172.29.213.10:5070 ID=0gQAAC8WAAACBAAALxYAAJmT
UrVeFdEMSouFoeDnzdKbnqZHYs2tiFs+Okphqx4p@10.159.0.25 UA='Grandstream GXP2140 1.0.9.135'
2020-01-28 05:17:37.059  DEBUG: dialplan [dialplan.c:208]: dp_get_ivalue(): searching 4
2020-01-28 05:17:37.059  DEBUG: dialplan [dialplan.c:216]: dp_get_ivalue(): dpid is 1 from pv argument
2020-01-28 05:17:37.059  DEBUG: dialplan [dialplan.c:225]: dp_get_svalue(): searching 4
2020-01-28 05:17:37.059  DEBUG: dialplan [dialplan.c:313]: dp_translate_f(): input is 9147323156
2020-01-28 05:17:37.059  DEBUG: dialplan [dp_repl.c:606]: translate(): regex operator testing over [9147323156]
2020-01-28 05:17:37.059  DEBUG: dialplan [dp_repl.c:606]: translate(): regex operator testing over [9147323156]
2020-01-28 05:17:37.059  DEBUG: dialplan [dp_repl.c:606]: translate(): regex operator testing over [9147323156]
2020-01-28 05:17:37.059  DEBUG: dialplan [dp_repl.c:676]: translate(): no matching rule
2020-01-28 05:17:37.059  DEBUG: dialplan [dialplan.c:318]: dp_translate_f(): could not translate 9147323156 with dpid 1
2020-01-28 05:17:37.059  INFO: <script>: No matching rewrite rules for '9147323156' found - R=sip:172.29.213.10:5070 ID=0gQAAC8WAAACBAAALxYAAJmTUrVeFdEMSouFoeDnz
dKbnqZHYs2tiFs+Okphqx4p@10.159.0.25 UA='Grandstream GXP2140 1.0.9.135'
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f3f97a41000, 70) called from core: core/usr_avp.c: create_avp(175)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f3f97a41000, 72) returns address 0x7f3fa7f6f028 frag. 0x7f3fa7f6eff0
(size=72) on 1 -th hit
2020-01-28 05:17:37.059  INFO: <script>: Clean AVPs that contains rewrite rule from method ROUTE_APPLY_REWRITE_RULE ID=0gQAAC8WAAACBAAALxYAAJmTUrVeFdEMSouFoeDnzd
KbnqZHYs2tiFs+Okphqx4p@10.159.0.25
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f3f97a41000, 0x7f3fb4365df8), called from core: core/usr_avp.c: destroy_a
vp(592)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f3fb4365dc0 alloc'ed from core: core/usr_avp.c: create_avp
(175)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f3f97a41000, 0x7f3fb7c8ef08), called from core: core/usr_avp.c: destroy_avp(592)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f3fb7c8eed0 alloc'ed from core: core/usr_avp.c: create_avp(175)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f3f97a41000, 0x7f3fd2bc8928), called from core: core/usr_avp.c: destroy_avp(592)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f3fd2bc88f0 alloc'ed from core: core/usr_avp.c: create_avp(175)

2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f40d8531010, 247) called from db_postgres: km_dbase.c: db_postgres_submit_query(171)
2020-01-28 05:17:37.059  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f40d8531010, 248) returns address 0x7f40d8aac7d8 frag. 0x7f40d8aac7a0 (size=376) on 1 -th hit
2020-01-28 05:17:37.059  CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 10
2020-01-28 05:17:37.059  DEBUG: <core> [core/tcp_main.c:3456]: handle_ser_child(): dead child 2, pid 28150 (shutting down?)
2020-01-28 05:17:37.059  DEBUG: <core> [core/io_wait.h:602]: io_watch_del(): DBG: io_watch_del (0xa52ba0, 10, -1, 0x0) fd_no=61 called
2020-01-28 05:17:37.059  ALERT: <core> [main.c:744]: handle_sigs(): child process 28150 exited by a signal 11
2020-01-28 05:17:37.059  ALERT: <core> [main.c:747]: handle_sigs(): core was generated
2020-01-28 05:17:37.059  INFO: <core> [main.c:759]: handle_sigs(): terminating due to SIGCHLD
2020-01-28 05:17:37.059  DEBUG: <core> [main.c:761]: handle_sigs(): terminating due to SIGCHLD
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5260600, used+overhead=7067400, free=11806968
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5260600, used+overhead=7067400, free=11806968
2020-01-28 05:17:37.060  DEBUG: qm_status: max used (+overhead)= 7144424
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5111688, used+overhead=6932632, free=11941736
2020-01-28 05:17:37.060  DEBUG: qm_status: max used (+overhead)= 7144424
2020-01-28 05:17:37.060  DEBUG: qm_status: dumping all alloc'ed. fragments:
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: qm_status:      0. N  address=0x7f40d856a6d8 frag=0x7f40d856a6a0 size=1024 used=1
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status:           alloc'd from core: core/str_hash.h: str_hash_alloc(59)
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status:          start check=f0f0f0f0, end check= c0c0c0c0, abcdefed
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received

2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5260600, used+overhead=7067400, free=11806968
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status: max used (+overhead)= 7144424
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5260600, used+overhead=7067400, free=11806968
2020-01-28 05:17:37.060  DEBUG: qm_status: max used (+overhead)= 7144424
2020-01-28 05:17:37.060  DEBUG: qm_status: dumping all alloc'ed. fragments:
2020-01-28 05:17:37.060  DEBUG: qm_status:      0. N  address=0x7f40d856a6d8 frag=0x7f40d856a6a0 size=1024 used=1
2020-01-28 05:17:37.060  DEBUG: qm_status:           alloc'd from core: core/str_hash.h: str_hash_alloc(59)
2020-01-28 05:17:37.060  DEBUG: qm_status:          start check=f0f0f0f0, end check= c0c0c0c0, abcdefed
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status:      1. N  address=0x7f40d856ab40 frag=0x7f40d856ab08 size=256 used=1
2020-01-28 05:17:37.060  DEBUG: qm_status:           alloc'd from core: core/str_hash.h: str_hash_alloc(59)
2020-01-28 05:17:37.060  DEBUG: qm_status:          start check=f0f0f0f0, end check= c0c0c0c0, abcdefed
2020-01-28 05:17:37.060  DEBUG: qm_status:      2. N  address=0x7f40d856aca8 frag=0x7f40d856ac70 size=176 used=1
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status:           alloc'd from core: core/counters.c: cnt_hash_add(332)
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: (0x7f40d8531010):
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5103784, used+overhead=6908920, free=11965448
2020-01-28 05:17:37.060  DEBUG: qm_status: heap size= 18874368
2020-01-28 05:17:37.060  DEBUG: qm_status: used= 5103784, used+overhead=6908920, free=11965448
2020-01-28 05:17:37.060  DEBUG: qm_status: max used (+overhead)= 7144424
2020-01-28 05:17:37.060  DEBUG: qm_status: dumping all alloc'ed. fragments:

 The loggin of proxy_2 is following:

2020-01-28 05:57:21.077  DEBUG: <core> [core/parser/msg_parser.c:171]: get_hdr_field(): <To> [74]; uri=[sip:usrloc@172.29.217.7:5060]
2020-01-28 05:57:21.077  DEBUG: <core> [core/parser/msg_parser.c:172]: get_hdr_field(): to body [<sip:usrloc@172.29.217.7:5060>]
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f5ae4367010, 64) called from core: core/parser/msg_parser.c: parse_he
aders(319)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f5ae4367010, 64) returns address 0x7f5ae499f980 frag. 0x7f5ae499f948
(size=64) on 1 -th hit
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f5ae4367010, 64) called from core: core/parser/msg_parser.c: parse_he
aders(319)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f5ae4367010, 64) returns address 0x7f5ae499bcf8 frag. 0x7f5ae499bcc0
(size=64) on 1 -th hit
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f5ae4367010, 48) called from core: core/parser/msg_parser.c: get_hdr_
field(135)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f5ae4367010, 48) returns address 0x7f5ae4916f90 frag. 0x7f5ae4916f58
(size=48) on 1 -th hit
2020-01-28 05:57:21.077  DEBUG: <core> [core/parser/msg_parser.c:152]: get_hdr_field(): cseq <CSeq>: <10> <KDMQ>
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f5ae4367010, 64) called from core: core/parser/msg_parser.c: parse_headers(319)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f5ae4367010, 64) returns address 0x7f5ae499e520 frag. 0x7f5ae499e4e8 (size=64) on 1 -th hit
2020-01-28 05:57:21.077  DEBUG: <core> [core/receive.c:191]: receive_msg(): --- received sip message - reply - call-id: [3d48b3aa4ec7e11f-8255@172.29.213.8] - cseq: [10 KDMQ]
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:368]: qm_malloc(): qm_malloc(0x7f5ae4367010, 936) called from core: core/rvalue.c: rval_new_empty(224)

2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:413]: qm_malloc(): qm_malloc(0x7f5ae4367010, 936) returns address 0x7f5ae48e1340 frag. 0x7f5ae48e1308 (size=1736) on 1 -th hit
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae48e1340), called from core: core/rvalue.c: rval_destroy(129)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae48e1308 alloc'ed from core: core/rvalue.c: rval_new_empty(224)
2020-01-28 05:57:21.077  DEBUG: tm [t_lookup.c:1001]: t_check_msg(): msg id=190277 global id=190276 T start=0xffffffffffffffff
2020-01-28 05:57:21.077  DEBUG: tm [t_lookup.c:879]: t_reply_matching(): t_reply_matching: hash 26335 label 0 branch 0
2020-01-28 05:57:21.077  DEBUG: tm [t_lookup.c:933]: t_reply_matching(): reply matched (T=0x7f59eef5b310)!
2020-01-28 05:57:21.077  DEBUG: tm [t_lookup.c:1070]: t_check_msg(): msg id=190277 global id=190277 T end=0x7f59eef5b310
2020-01-28 05:57:21.077  DEBUG: tm [t_lookup.c:1001]: t_check_msg(): msg id=190277 global id=190277 T start=0x7f59eef5b310
2020-01-28 05:57:21.077  DEBUG: tm [t_lookup.c:1073]: t_check_msg(): T already found!
2020-01-28 05:57:21.077  DEBUG: tm [t_reply.c:2147]: reply_received(): org. status uas=0, uac[0]=0 local=2 is_invite=0)
2020-01-28 05:57:21.077  DEBUG: tm [t_reply.c:1220]: t_should_relay_response(): ->>>>>>>>> T_code=0, new_code=200
2020-01-28 05:57:21.077  DEBUG: tm [t_reply.c:2021]: local_reply(): branch=0, save=0, winner=0
2020-01-28 05:57:21.077  DEBUG: tm [t_reply.c:2060]: local_reply(): local transaction completed 200/0 (totag retr: 0/1024)
2020-01-28 05:57:21.077  DEBUG: tm [t_hooks.c:258]: run_trans_callbacks_internal(): DBG: trans=0x7f59eef5b310, callback type 1024, id 0 entered
2020-01-28 05:57:21.077  DEBUG: dmq [dmq_funcs.c:61]: dmq_tm_callback(): dmq_tm_callback start
2020-01-28 05:57:21.077  DEBUG: dmq_usrloc [usrloc_sync.c:583]: usrloc_dmq_resp_callback_f(): dmq response callback triggered [0x7f5ae4a373c8 200 (nil)]
2020-01-28 05:57:21.077  DEBUG: dmq [dmq_funcs.c:67]: dmq_tm_callback(): dmq_tm_callback done
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f59a3877000, 0x7f59f9b93080), called from dmq: dmqnode.c: shm_free_node(306)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f59f9b93048 alloc'ed from dmq: ../../core/ut.h: shm_str_dup(723)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f59a3877000, 0x7f59c6055a40), called from dmq: dmqnode.c: shm_free_node(307)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f59c6055a08 alloc'ed from dmq: dmqnode.c: shm_dup_node(279)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f59a3877000, 0x7f59c4a46a48), called from dmq: dmq_funcs.c: dmq_tm_callback(69)
2020-01-28 05:57:21.077  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f59c4a46a10 alloc'ed from dmq: dmq_funcs.c: dmq_send_message(212)
2020-01-28 05:57:21.077  DEBUG: tm [t_reply.c:1578]: cleanup_uac_timers(): RETR/FR timers reset
2020-01-28 05:57:21.077  DEBUG: <core> [core/receive.c:348]: receive_msg(): reply-route executed in: 143 usec
2020-01-28 05:57:21.077  DEBUG: <core> [core/usr_avp.c:631]: destroy_avp_list(): destroying list (nil)
2020-01-28 05:57:21.077  DEBUG: <core> [core/usr_avp.c:631]: destroy_avp_list(): destroying list (nil)
2020-01-28 05:57:21.077  DEBUG: <core> [core/usr_avp.c:631]: destroy_avp_list(): destroying list (nil)
2020-01-28 05:57:21.077  DEBUG: <core> [core/usr_avp.c:631]: destroy_avp_list(): destroying list (nil)
2020-01-28 05:57:21.077  DEBUG: <core> [core/usr_avp.c:631]: destroy_avp_list(): destroying list (nil)
2020-01-28 05:57:21.077  DEBUG: <core> [core/usr_avp.c:631]: destroy_avp_list(): destroying list (nil)
2020-01-28 05:57:21.077  DEBUG: <core> [core/xavp.c:446]: xavp_destroy_list(): destroying xavp list (nil)
2020-01-28 05:57:21.078  DEBUG: <core> [core/receive.c:368]: receive_msg(): cleaning up
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae499e670), called from core: core/parser/parse_via.c: free_via_param_list(2725)

2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae499e638 alloc'ed from core: core/parser/parse_via.c: parse_via(2511)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae499f830), called from core: core/parser/parse_via.c: free_via_list(2738)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae499f7f8 alloc'ed from core: core/parser/msg_parser.c: get_hdr_field(116)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae4921478), called from core: core/parser/hf.c: free_hdr_field_lst(217)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae4921440 alloc'ed from core: core/parser/msg_parser.c: parse_headers(319)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae4924f60), called from core: core/parser/parse_addr_spec.c: free_to_params(895)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae4924f28 alloc'ed from core: core/parser/parse_addr_spec.c: parse_to_param(285)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae4998e48), called from core: core/parser/parse_addr_spec.c: free_to(905)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae4998e10 alloc'ed from core: core/parser/msg_parser.c: get_hdr_field(155)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae48ecd18), called from core: core/parser/hf.c: free_hdr_field_lst(217)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae48ecce0 alloc'ed from core: core/parser/msg_parser.c: parse_headers(319)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae499f980), called from core: core/parser/hf.c: free_hdr_field_lst(217)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae499f948 alloc'ed from core: core/parser/msg_parser.c: parse_headers(319)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae4916f90), called from core: core/parser/parse_cseq.c: free_cseq(99)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae4916f58 alloc'ed from core: core/parser/msg_parser.c: get_hdr_field(135)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae499bcf8), called from core: core/parser/hf.c: free_hdr_field_lst(217)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae499bcc0 alloc'ed from core: core/parser/msg_parser.c: parse_headers(319)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae499e520), called from core: core/parser/hf.c: free_hdr_field_lst(217)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae499e4e8 alloc'ed from core: core/parser/msg_parser.c: parse_headers(319)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:454]: qm_free(): qm_free(0x7f5ae4367010, 0x7f5ae4a373c8), called from core: core/receive.c: receive_msg(370)
2020-01-28 05:57:21.078  DEBUG: <core> [core/mem/q_malloc.c:489]: qm_free(): qm_free: freeing frag. 0x7f5ae4a37390 alloc'ed from core: core/receive.c: receive_msg(150)
2020-01-28 05:57:21.117  CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 10
2020-01-28 05:57:21.117  DEBUG: <core> [core/tcp_main.c:3456]: handle_ser_child(): dead child 2, pid 8253 (shutting down?)
2020-01-28 05:57:21.117  DEBUG: <core> [core/io_wait.h:602]: io_watch_del(): DBG: io_watch_del (0xa52ba0, 10, -1, 0x0) fd_no=61 called
2020-01-28 05:57:21.118  ALERT: <core> [main.c:744]: handle_sigs(): child process 8253 exited by a signal 11
2020-01-28 05:57:21.118  ALERT: <core> [main.c:747]: handle_sigs(): core was generated
2020-01-28 05:57:21.118  INFO: <core> [main.c:759]: handle_sigs(): terminating due to SIGCHLD
2020-01-28 05:57:21.118  DEBUG: <core> [main.c:761]: handle_sigs(): terminating due to SIGCHLD
2020-01-28 05:57:21.118  INFO: <core> [main.c:814]: sig_usr(): signal 15 received
2020-01-28 05:57:21.118  DEBUG: <core> [main.c:825]: sig_usr(): Memory status (pkg):

Best regards
Virgílio Cunha