### Description

during tls relaying, do tls.reload repeatedly, tcp receiver task will crash ### Troubleshooting

#### Reproduction (1)write a simple request_route logic in kamailio.cfg, as follows: request_route { add_local_rport(); $du = "sip:192.168.131.190:1001;transport=tls"; forward(); } (2)start sipp caller to kamailio tls:0.0.0.0:5061 and kamailio will relay this request to callee (3)at the same time, in another console, run the following cmds: while true; do /opt/kamailio/sbin/kamcmd tls.reload && sleep 0.1&& echo `date`; done;

#### Debugging Data ``` (gdb) bt full #0 0x00007f69569e81f7 in raise () from /lib64/libc.so.6 No symbol table info available. #1 0x00007f69569e98e8 in abort () from /lib64/libc.so.6 No symbol table info available. #2 0x00000000006d59cf in tlsf_free (tlsf=0x7f6920869000, ptr=0x7f6927ca74b8, file=0x7f694ccb73e4 "tls: tls_init.c", function=0x7f694ccb8b7e <__FUNCTION__.23358> "ser_free", line=323, mname=0x7f694ccb73e0 "tls") at core/mem/tlsf_malloc.c:1031 control = 0x7f6920869000 block = 0x7f6927ca7488 __FUNCTION__ = "tlsf_free" #3 0x00000000006da1ee in tlsf_shm_free (tlsfmp=0x7f6920869000, p=0x7f6927ca74b8, file=0x7f694ccb73e4 "tls: tls_init.c", func=0x7f694ccb8b7e <__FUNCTION__.23358> "ser_free", line=323, mname=0x7f694ccb73e0 "tls") at core/mem/tlsf_malloc.c:1544 No locals. #4 0x00007f694cc68cea in ser_free (ptr=0x7f6927ca74b8, fname=0x7f694c6fba75 "crypto/err/err.c", fline=450) at tls_init.c:323 __FUNCTION__ = "ser_free" #5 0x00007f694c617de3 in CRYPTO_free (str=0x7f6927ca74b8, file=0x7f694c6fba75 "crypto/err/err.c", line=450) at crypto/mem.c:299 No locals. #6 0x00007f694c5e656a in ERR_clear_error () at crypto/err/err.c:450 i = 1 es = 0x7f69208d17e8 #7 0x00007f694c9f8fbc in state_machine (s=0x7f6927ca4e58, server=1) at ssl/statem/statem.c:311 buf = 0x0 cb = 0x0 st = 0x7f6927ca4ea0 ret = -1 ssret = 57 #8 0x00007f694c9f8f17 in ossl_statem_accept (s=0x7f6927ca4e58) at ssl/statem/statem.c:255 No locals. ---Type <return> to continue, or q <return> to quit--- #9 0x00007f694c9dfd81 in SSL_do_handshake (s=0x7f6927ca4e58) at ssl/ssl_lib.c:3661 ret = 1 #10 0x00007f694c9dbfb9 in SSL_accept (s=0x7f6927ca4e58) at ssl/ssl_lib.c:1652 No locals. #11 0x00007f694cc9048e in tls_accept (c=0x7f6927c9f2a8, error=0x7ffe3a31e894) at tls_server.c:468 ret = 1 ssl = 0x7f6927ca4e58 cert = 0x0 tls_c = 0x7f6927c9ed50 tls_log = 32617 __FUNCTION__ = "tls_accept" pkey = 0x0 #12 0x00007f694cc9ab97 in tls_h_read_f (c=0x7f6927c9f2a8, flags=0x7ffe3a31ece0) at tls_server.c:1173 r = 0x7f6927c9f3d0 bytes_free = 16383 bytes_read = 194 read_size = 16383 ssl_error = 0 ssl_read = 0 ssl = 0x7f6927ca4e58 rd_buf = "\026\003\001\000\275\001\000\000\271\003\003\357$\303\342a\362C\v\220\n\031Fs=E\267m\215\260\031\341\376\027A\213Ѱ)\\251\036\336\000\000\070\300,\300\060\000\237̨̩̪\300+\300/\000\236\300$\300(\000k\300#\300'\000g\300\n\300\024\000\071\300\t\300\023\000\063\000\235\000\234\000=\000<\000\065\000/\000\377\001\000\000X\000\v\000\004\003\000\001\002\000\n\000\f\000\n\000\035\000\027\000\036\000\031\000\030\000#\000\000\000\026\000\000\000\027\000\000\000\r\000\060\000.\004\003\005\003\006\003\b\a\b\b\b\t\b\n\b\v\b\004\b\005\b\006\004\001\005\001\006\001\003\003\002\003\003\001\002\001\003\002\002\002\004\002\005\002\006\002\232\203\002?\267,\241/\\331"... wr_buf = "\026\003\003\000\272\004\000\000\266\000\000\034 \000\260\201\227\230o\346/%W\246\306o&\210j\017@\036\352\064\240---Type <return> to continue, or q <return> to quit--- 346\351(q\233\374\321\332D1|\rI\235\b`\022v^Xk\265\f\270a\243\260\373\311\t<o\v\324\245\205@\344\vz\016\005Vbud\254f\n\326!\306\nm>r]\271e\351\345w\214\200\037\t\265\307\064)\033.\273{1\351\326W,\262\264\267\241\237M\254\276\372\026\227j8\344#Aw\r\025ULM\021\245\222:\004a\006zm?\374\243\224\275\300\310AG\347\305\376\257\303\035I\215\064\035\215\021\300\210o\036A\373\037\231l\242_\324\017\312^\024\r\312\340yq\375?\317 \024\003\003\000\001\001\026\003\003\000"... rd = {buf = 0x7ffe3a30e890 "\026\003\001", pos = 0, used = 194, size = 65536} wr = {buf = 0x7ffe3a2fe890 "\026\003\003", pos = 0, used = 0, size = 65536} tls_c = 0x7f6927c9ed50 enc_rd_buf = 0x0 n = 0 flush_flags = 1 err_src = 0x7f694ccc1878 "TLS read:" ip_buf = "192.168.131.190", '\000' <repeats 48 times> x = 0 tls_dbg = 0 __FUNCTION__ = "tls_h_read_f" #13 0x00000000006b6509 in tcp_read_headers (c=0x7f6927c9f2a8, read_flags=0x7ffe3a31ece0) at core/tcp_read.c:441 bytes = 65535 remaining = 0 p = 0x7f6925192572 ": 100587 sip:100587@Sipproxy.gs:5062;tag=588\r\nTo: 100 sip:100@sipproxy.gs:5061;transport=TLS;tag=21794\r\nCall-ID: 588-49839@192.168.131.190\r\nCSeq: 1 INVITE\r\nServer: Grandstream UCM6301V1.2C 1.0.13."... r = 0x7f6927c9f3d0 mc = 622404320 body_len = 0 mfline = 0x0 mtransid = {s = 0x7f6925191f40 "\030\002", len = 622403416} __FUNCTION__ = "tcp_read_headers" #14 0x00000000006bdd81 in tcp_read_req (con=0x7f6927c9f2a8, bytes_read=0x7ffe3a31ece4, read_flags=0x7ffe3a31ece0) ---Type <return> to continue, or q <return> to quit--- at core/tcp_read.c:1469 bytes = -1 total_bytes = 0 resp = 1 size = 140729874770784 req = 0x7f6927c9f3d0 dst = {send_sock = 0x400000010, to = {s = {sa_family = 0, sa_data = "\300+\002\000\000\000\001\000\061:\006\000\000"}, sin = {sin_family = 0, sin_port = 11200, sin_addr = {s_addr = 2}, sin_zero = "\001\000\061:\006\000\000"}, sin6 = { sin6_family = 0, sin6_port = 11200, sin6_flowinfo = 2, sin6_addr = {__in6_u = { __u6_addr8 = "\001\000\061:\006\000\000\000\000F\265\000\000\000\000", __u6_addr16 = {1, 14897, 6, 0, 17920, 181, 0, 0}, __u6_addr32 = {976289793, 6, 11879936, 0}}}, sin6_scope_id = 8233784}, sas = {ss_family = 0, __ss_padding = "\300+\002\000\000\000\001\000\061:\006\000\000\000\000F\265\000\000\000\000\000\070\243}\000\004\274{ \020\000\000\000\020\000\000\000 \354\061:\371\273{ \002\000\000\000\000\000\000\000\024\000\000\000\000\000\000\000\001\000\000\000\001\000\000\000\a\000\000\000\000\000\000\000\000\000\300+\000\000\000\000\330\354\061:\376\177\000\000\b", '\000' <repeats 22 times>, __ss_align = 140729874770800}}, id = 1, send_flags = {f = 0, blst_imask = 0}, proto = 80 'P', proto_pad0 = -21 '\353', proto_pad1 = 14897} c = 58 ':' ret = 0 __FUNCTION__ = "tcp_read_req" #15 0x00000000006c29e7 in handle_io (fm=0x7f6952f58a58, events=1, idx=-1) at core/tcp_read.c:1780 ret = 8 n = 8 read_flags = RD_CONN_SHORT_READ con = 0x7f6927c9f2a8 s = 7 resp = 1 t = 0 ---Type <return> to continue, or q <return> to quit--- ee = 0x0 __FUNCTION__ = "handle_io" #16 0x00000000006b1729 in io_wait_loop_epoll (h=0xb54600 <io_w>, t=2, repeat=0) at core/io_wait.h:1070 n = 1 r = 0 fm = 0x7f6952f58a58 revents = 1 __FUNCTION__ = "io_wait_loop_epoll" #17 0x00000000006c5519 in tcp_receive_loop (unix_sock=16) at core/tcp_read.c:1976 __FUNCTION__ = "tcp_receive_loop" #18 0x0000000000535888 in tcp_init_children (woneinit=0x7ffe3a31f09c) at core/tcp_main.c:5227 r = 1 i = 5 reader_fd_1 = 16 pid = 0 si_desc = "tcp receiver (generic)\000\000\000\000\000\000\000\000\000\000@\304A\000\000\000\000\000SI\203\000\000\000\000\000\070\243}\000\000\000\000\000\000\000\300+\000\000\000\000\060\360\061:\376\177\000\000\347SW\000\000\000\000\000\060\360\061:\376\177\000\000\n\363e\000\000\000\000\000\340\357\061:\376\177\000\000)\310w\000\000\000\000\000\t\000\000\000\n\000\000\000\000\263\206 i\177\000" si = 0x0 __FUNCTION__ = "tcp_init_children" #19 0x000000000042d562 in main_loop () at main.c:1849 i = 0 pid = 37536 si = 0x0 si_desc = "\v\000\000\000z\000\000\000\004\000\000\000j\001\000\000\000\000\000\000\376\177\000\000\200p\000\000\000\000\000\000p\025\252\002\000\000\000\000 \261\206 i\177\000\000\240\243^Ni\177\000\000\000\000\000\000\000\000\000\000`\366\061:\376\177\00---Type <return> to continue, or q <return> to quit--- 0\000\230Y^Ni\177\000\000SI\203\000\000\000\000\000\070\243}\000\000\000\000\000\250\225^Ni\177\000\000\217U\252Vi\177\000\000\000\362\061:\376\177\000\000\060\000\000\000\060\000\000" nrprocs = 5143176 woneinit = 1 __FUNCTION__ = "main_loop" #20 0x0000000000436b1e in main (argc=7, argv=0x7ffe3a31f748) at main.c:3078 cfg_stream = 0x2a130a0 c = -1 r = 0 tmp = 0x7ffe3a32157d "" tmp_len = 0 port = 0 proto = 0 ahost = 0x0 aport = 0 options = 0x7dd4e0 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 2220745850 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffe3a31f600 p = 0x0 st = {st_dev = 18, st_ino = 104172, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1672026025, tv_nsec = 194902649}, st_mtim = { tv_sec = 1672281302, tv_nsec = 856611068}, st_ctim = {tv_sec = 1672281302, tv_nsec = 856611068}, __unused = {0, 0, 0}} ---Type <return> to continue, or q <return> to quit--- tbuf = "\216\377w\001", '\000' <repeats 12 times>, "\250\061\234Vi\177\000\000\000\360\212Wi\177", '\000' <repeats 90 times>, "\200"\254\000\000\000\000\000\300\310A\000\000\000\000\000@\367\061:\376\177", '\000' <repeats 26 times>, "\336\310jWi\177\000\000\001", '\000' <repeats 23 times>... option_index = 0 long_options = {{name = 0x7df90f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7da7b4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7df914 "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x7df91a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7df920 "substdef", has_arg = 1, flag = 0x0, val = 1026}, { name = 0x7df929 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x7df933 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7df93d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, { name = 0x7df948 "modparam", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x7df951 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7df95c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7df962 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x7df96c "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) (gdb) info locals cfg_stream = 0x2a130a0 c = -1 r = 0 tmp = 0x7ffe3a32157d "" tmp_len = 0 port = 0 proto = 0 ahost = 0x0 aport = 0 options = 0x7dd4e0 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 2220745850 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffe3a31f600 p = 0x0 st = {st_dev = 18, st_ino = 104172, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1672026025, tv_nsec = 194902649}, st_mtim = {tv_sec = 1672281302, tv_nsec = 856611068}, st_ctim = {tv_sec = 1672281302, tv_nsec = 856611068}, __unused = {0, 0, 0}} tbuf = "\216\377w\001", '\000' <repeats 12 times>, "\250\061\234Vi\177\000\000\000\360\212Wi\177", '\000' <repeats 90 times>, "\200"\254\000\000\000\000\000\300\310A\000\000\000\000\000@\367\061:\376\177", '\000' <repeats 26 times>, "\336\310jWi\177\000\000\001", '\000' <repeats 23 times>... option_index = 0 long_options = {{name = 0x7df90f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7da7b4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7df914 "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x7df91a "subst", has_arg = 1, flag = 0x0, ---Type <return> to continue, or q <return> to quit--- val = 1025}, {name = 0x7df920 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7df929 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x7df933 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7df93d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7df948 "modparam", has_arg = 1, flag = 0x0, val = 1030}, { name = 0x7df951 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7df95c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7df962 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x7df96c "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) list 1978 int main(int argc, char** argv) 1979 { 1980 1981 FILE* cfg_stream; 1982 int c,r; 1983 char *tmp; 1984 int tmp_len; 1985 int port; 1986 int proto; 1987 char *ahost = NULL; ```

#### Log Messages

#### SIP Traffic

### Possible Solutions

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` version: kamailio 5.6.2 (x86_64/linux) 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 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: unknown compiled on 10:33:27 Dec 29 2022 with gcc 4.9.4 ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `lsb_release -a` and `uname -a`) -->

``` Linux localhost.localdomain 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux ```