Here is the GDB analyse with kamailio-debuginfo package added:
(gdb) bt full #0 0x00007f3245d49acf in raise () from /lib64/libc.so.6 No symbol table info available. #1 0x00007f3245d1cea5 in abort () from /lib64/libc.so.6 No symbol table info available. #2 0x0000000000722804 in qm_debug_check_frag (qm=0x7f323c77c000, f=0x7f323ca16560, file=0x846305 "", line=81, efile=0x8b4ca9 "", eline=546) at core/mem/q_malloc.c:143 p = 0x8b5d48 <__func__.6986> __func__ = '\000' <repeats 19 times> #3 0x000000000072648a in qm_free (qmp=0x7f323c77c000, p=0x7f323ca165a0, file=0x846305 "", func=0x848348 <__func__.4658> "", line=81, mname=0x846300 "") at core/mem/q_malloc.c:546 qm = 0x7f323c77c000 f = 0x7f323ca16560 size = 140728364251424 next = 0x0 prev = 0x43ee05 <xavp_destroy_list+717> __func__ = "\000\000\000\000\000\000\000" #4 0x0000000000731bc9 in qm_shm_free (qmp=0x7f323c77c000, p=0x7f323ca165a0, file=0x846305 "", func=0x848348 <__func__.4658> "", line=81, mname=0x846300 "") at core/mem/q_malloc.c:1532 No locals. #5 0x000000000043d719 in xavp_free (xa=0x7f323ca165a0) at core/xavp.c:81 __func__ = "\000\000\000\000\000\000\000\000\000" #6 0x000000000043ee7b in xavp_destroy_list (head=0xb3bb40 <_xavp_list_head>) at core/xavp.c:635 avp = 0x7f32439e8f40 foo = 0x7f323ca165a0 __func__ = '\000' <repeats 17 times> #7 0x000000000043eef2 in xavp_reset_list () at core/xavp.c:647 __PRETTY_FUNCTION__ = '\000' <repeats 15 times> #8 0x0000000000616156 in ksr_msg_env_reset () at core/receive.c:669 No locals. #9 0x0000000000615a66 in receive_msg ( buf=0xb4cf60 <buf> "SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP 10.227.83.49;branch=z9hG4bKf6ff.6818bd21", '0' <repeats 24 times>, ".0\r\nTo: sip:cs1-tool-misc.orange-voicemail.net:5060;tag=4151cbdcbc42485256cba2778b769caa.3f3d\r\nFrom: "..., len=399, rcv_info=0x7ffde0293ff0) at core/receive.c:634 msg = 0x7f3245691cc0 ctx = {rec_lev = -534168368, run_flags = 32765, last_retcode = 7532591, jmp_env = {{__jmpbuf = {-1, 0, 139853889502976, 139853885763600, 140728898420735, 139853861857172, 120259084312, 139853900247200}, __mask_was_saved = 0, __saved_mask = {__val = {7590947731968763392, 3076992, 0, 140728364253504, 139853897549040, 9011416, 8762712, 399, 139853897549200, 206158430256, 140728364252472, 140728364252224, 7590947731968763392, 139853897549040, 9011411, 9011416}}}}} bctx = 0x0 ret = 0 tvb = {tv_sec = 1733506143, tv_usec = 409012} tve = {tv_sec = 1733506143, tv_usec = 409233} diff = 221 inb = { s = 0xb4cf60 <buf> "SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP 10.227.83.49;branch=z9hG4bKf6ff.6818bd21", '0' <repeats 24 times>, ".0\r\nTo: sip:cs1-tool-misc.orange-voicemail.net:5060;tag=4151cbdcbc42485256cba2778b769caa.3f3d\r\nFrom: "..., len = 399} netinfo = {data = {s = 0x0, len = 0}, bufsize = 0, rcv = 0x0, dst = 0x0} keng = 0x0 evp = {data = 0x7ffde0293b50, obuf = {s = 0x0, len = 0}, rcv = 0x7ffde0293ff0, dst = 0x0, req = 0x0, rpl = 0x0, rplcode = 0, mode = 0} cidlockidx = 0 cidlockset = 0 errsipmsg = 0 exectime = 1 __func__ = '\000' <repeats 11 times> #10 0x00000000004d6ef0 in udp_rcv_loop () at core/udp_server.c:760 len = 399 buf = "SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP 10.227.83.49;branch=z9hG4bKf6ff.6818bd21", '0' <repeats 24 times>, ".0\r\nTo: sip:cs1-tool-misc.orange-voicemail.net:5060;tag=4151cbdcbc42485256cba2778b769caa.3f3d\r\nFrom: "... tmp = 0xffffffff3c7be010 <error: Cannot access memory at address 0xffffffff3c7be010> fromaddr = 0x7f3245677e50 --Type <RET> for more, q to quit, c to continue without paging-- fromaddrlen = 16 rcvi = {src_ip = {af = 2, len = 4, u = {addrl = {156492554, 0}, addr32 = {156492554, 0, 0, 0}, addr16 = {58122, 2387, 0, 0, 0, 0, 0, 0}, addr = "\n\343S\t", '\000' <repeats 11 times>}}, dst_ip = {af = 2, len = 4, u = {addrl = {827581194, 0}, addr32 = {827581194, 0, 0, 0}, addr16 = {58122, 12627, 0, 0, 0, 0, 0, 0}, addr = "\n\343S1", '\000' <repeats 11 times>}}, src_port = 5060, dst_port = 5060, proto_reserved1 = 0, proto_reserved2 = 0, src_su = {s = {sa_family = 2, sa_data = "\023\304\n\343S\t\000\000\000\000\000\000\000"}, sin = {sin_family = 2, sin_port = 50195, sin_addr = {s_addr = 156492554}, sin_zero = "\000\000\000\000\000\000\000"}, sin6 = {sin6_family = 2, sin6_port = 50195, sin6_flowinfo = 156492554, sin6_addr = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, sin6_scope_id = 0}, sas = {ss_family = 2, __ss_padding = "\023\304\n\343S\t", '\000' <repeats 111 times>, __ss_align = 0}}, bind_address = 0x7f3245471d40, rflags = (unknown: 0), proto = 1 '\001', proto_pad0 = 0 '\000', proto_pad1 = 0} evp = {data = 0x0, obuf = {s = 0x0, len = 0}, rcv = 0x0, dst = 0x0, req = 0x0, rpl = 0x0, rplcode = 0, mode = 0} printbuf = "SIP/2.0 200 OK 0D 0A Via: SIP/2.0/UDP 10.227.83.49;branch=z9hG4bKf6ff.6818bd21", '0' <repeats 24 times>, ".0 0D \000\000\000e͇\000\000\000\000\000\a\000\000\000\000\000\000\000\360>)\340\375\177\000\000l\335Z", '\000' <repeats 13 times>, "\300F\206\000\000\000\000\000\000\000\000\000\024\000\000\000\031D\205\000\000\000\000\000\340M4\001\001\000\000\000-D\205", '\000' <repeats 13 times>, "\360"... i = 100 j = 109 l = 4 __func__ = '\000' <repeats 12 times> #11 0x000000000042d844 in main_loop () at main.c:1815 i = 0 pid = 0 si = 0x7f3245471d40 si_desc = "udp receiver child=0 sock=10.227.83.49:5060\000\062\177\000\000\020\000\000\000\003\000\000\000xKHE2\177\000\000pG)\340\375\177\000\000\020)gE2\177\000\000Ӏ\211\000\000\000\000\000\250\362\203\000\000\000\000\000\000\000\000\004\000\000\000\000\220E\342E2\177\000\000\060\000\000\000\060\000\000\000(C)\340\375\177\000" nrprocs = 4 woneinit = 0 __func__ = "\000\000\000\000\000\000\000\000\000" #12 0x0000000000439ba7 in main (argc=11, argv=0x7ffde0294848) at main.c:3256 cfg_stream = 0x10a22a0 c = -1 r = 0 tmp = 0x7ffde0294ed5 "" tmp_len = 32562 port = 5060 proto = 0 aproto = 0 ahost = 0x0 aport = 0 options = 0x842608 "" ret = -1 seed = 3917384781 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 2 n_lst = 0x7f3246cae7c0 p = 0x7f3245e645e8 <do_sym+424> "" st = {st_dev = 24, st_ino = 22591, st_nlink = 2, st_mode = 16832, st_uid = 248, st_gid = 248, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = { tv_sec = 1733503573, tv_nsec = 707823169}, st_mtim = {tv_sec = 1733506027, tv_nsec = 976781619}, st_ctim = {tv_sec = 1733506027, tv_nsec = 976781619}, __glibc_reserved = {0, 0, 0}} l1 = 64 tbuf = "@\357\247F2\177\000\000\000\000\000\000\000\000\000\000\370\066\312F2\177\000\000@\357\247F2\177\000\000`\347\247F2\177\000\000x\345\312F2\177\000\000`D)\340\375\177\000\000\000\340\247F2\177\000\000\274\351\247F2\177\000\000\223ΨF2\177\000\000\350\337\317E2\177\000\000\254\202\226\006\000\000\000\000\036\060\252F2\177\000\000\254\202\226\006\000\000\000\000\205\317c\t\000\000\000\000YϨF2\177\000\000\020\060\252F2\177\000\000\354\312\317E2\177\000\000\000\000\000\000\000\000\000\000д\312F2\177\000\000\001\000\000\000\000\000\000\000ve6h\342\004\000\000\020\342\312F2\177\000\000\200B\312F2\177\000\000\020\342\312F2\177\000\000\320K="... option_index = 12 long_options = {{name = 0x844a46 "", has_arg = 0, flag = 0x0, val = 104}, {name = 0x83f754 "", has_arg = 0, flag = 0x0, val = 118}, {name = 0x844a4b "", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x844a51 "", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x844a57 "", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x844a60 "", has_arg = 1, flag = 0x0, --Type <RET> for more, q to quit, c to continue without paging-- val = 1027}, {name = 0x844a6a "", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x844a74 "", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x844a7f "", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x844a88 "", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x844a93 "", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x844a99 "", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x844aa3 "", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x844aaa "", has_arg = 0, flag = 0x0, val = 1035}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __func__ = "\000\000\000\000"
(gdb) bt #0 0x00007f3245d49acf in raise () from /lib64/libc.so.6 #1 0x00007f3245d1cea5 in abort () from /lib64/libc.so.6 #2 0x0000000000722804 in qm_debug_check_frag (qm=0x7f323c77c000, f=0x7f323ca16560, file=0x846305 "", line=81, efile=0x8b4ca9 "", eline=546) at core/mem/q_malloc.c:143 #3 0x000000000072648a in qm_free (qmp=0x7f323c77c000, p=0x7f323ca165a0, file=0x846305 "", func=0x848348 <__func__.4658> "", line=81, mname=0x846300 "") at core/mem/q_malloc.c:546 #4 0x0000000000731bc9 in qm_shm_free (qmp=0x7f323c77c000, p=0x7f323ca165a0, file=0x846305 "", func=0x848348 <__func__.4658> "", line=81, mname=0x846300 "") at core/mem/q_malloc.c:1532 #5 0x000000000043d719 in xavp_free (xa=0x7f323ca165a0) at core/xavp.c:81 #6 0x000000000043ee7b in xavp_destroy_list (head=0xb3bb40 <_xavp_list_head>) at core/xavp.c:635 #7 0x000000000043eef2 in xavp_reset_list () at core/xavp.c:647 #8 0x0000000000616156 in ksr_msg_env_reset () at core/receive.c:669 #9 0x0000000000615a66 in receive_msg ( buf=0xb4cf60 <buf> "SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP 10.227.83.49;branch=z9hG4bKf6ff.6818bd21", '0' <repeats 24 times>, ".0\r\nTo: sip:cs1-tool-misc.orange-voicemail.net:5060;tag=4151cbdcbc42485256cba2778b769caa.3f3d\r\nFrom: "..., len=399, rcv_info=0x7ffde0293ff0) at core/receive.c:634 #10 0x00000000004d6ef0 in udp_rcv_loop () at core/udp_server.c:760 #11 0x000000000042d844 in main_loop () at main.c:1815 #12 0x0000000000439ba7 in main (argc=11, argv=0x7ffde0294848) at main.c:3256
(gdb) list 2066 & now if we don't need it */ 2067 #ifdef USE_SLOW_TIMER 2068 + 1 /* slow timer process */ 2069 #endif 2070 #ifdef USE_TCP 2071 + ((!tcp_disable) ? (1 /* tcp main */ + tcp_listeners) : 0) 2072 #endif 2073 #ifdef USE_SCTP 2074 + ((!sctp_disable) ? sctp_listeners : 0) 2075 #endif