gdb) bt full
#0 0x00007fb779279450 in futex_wait (private=<optimized out>, expected=1, futex_word=0x7fb6f78cb964) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
__ret = -512
err = <optimized out>
#1 futex_wait_simple (private=<optimized out>, expected=1, futex_word=0x7fb6f78cb964) at ../sysdeps/nptl/futex-internal.h:135
No locals.
#2 __pthread_rwlock_wrlock_slow (rwlock=0x7fb6f78cb958) at pthread_rwlock_wrlock.c:67
waitval = 1
result = 0
futex_shared = <optimized out>
#3 0x00007fb77995eee9 in CRYPTO_THREAD_write_lock () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1
No symbol table info available.
#4 0x00007fb779907896 in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1
No symbol table info available.
#5 0x00007fb77990807e in CRYPTO_free_ex_data () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1
No symbol table info available.
#6 0x00007fb779c65a09 in SSL_free () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1
No symbol table info available.
#7 0x00007fb777c022d6 in tls_h_tcpconn_clean (c=0x7fb6fbb73d58) at tls_server.c:655
extra = 0x7fb6fba1a6d0
__func__ = "tls_h_tcpconn_clean"
#8 0x0000559ddff2966f in _tcpconn_free (c=0x7fb6fbb73d58) at core/tcp_main.c:1339
__func__ = "_tcpconn_free"
#9 0x0000559ddff3c5f7 in tcpconn_put_destroy (tcpconn=0x7fb6fbb73d58) at core/tcp_main.c:3017
__func__ = "tcpconn_put_destroy"
#10 0x0000559ddff3e0f2 in send_fd_queue_run (q=0x559de0518bc0 <send2child_q>) at core/tcp_main.c:3210
p = 0x7fb77e19e2c8
t = 0x7fb77e19e2c8
__func__ = "send_fd_queue_run"
#11 0x0000559ddff4f61c in tcp_main_loop () at core/tcp_main.c:4548
si = 0x0
r = 10
__func__ = "tcp_main_loop"
#12 0x0000559ddfe4e85d in main_loop () at main.c:1753
i = 3
pid = 0
si = 0x0
si_desc = "udp receiver child=2 sock=127.0.0.1:5060 (127.0.0.1:5060)\000\065\060\066\060)\000\000\000\000\200\000\000\000\000\000\000\000\002\000\000\000\000\006\000\000\000\000\000\000\000O \254\177\267\177\000\000p\324\067?\375\177\000\000\060\000\000\000\060\000\000\000\020\325\067?\375\177\000\000\360k\255}\267\177\000"
nrprocs = 3
woneinit = 1
__func__ = "main_loop"
#13 0x0000559ddfe554ce in main (argc=13, argv=0x7ffd3f37d7a8) at main.c:2696
cfg_stream = 0x559de1c10010
c = -1
r = 0
tmp = 0x7ffd3f37deba ""
tmp_len = 32765
port = 1060623840
proto = 32695
options = 0x559de01c2a50 ":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 = 33232859
---Type <return> to continue, or q <return> to quit---
rfd = 4
debug_save = 0
debug_flag = 0
dont_fork_cnt = 0
n_lst = 0x0
p = 0xf0b5ff <error: Cannot access memory at address 0xf0b5ff>
st = {st_dev = 19, st_ino = 13222, st_nlink = 2, st_mode = 16832, st_uid = 108, st_gid = 112, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {
tv_sec = 1560780032, tv_nsec = 539855841}, st_mtim = {tv_sec = 1565076521, tv_nsec = 998570962}, st_ctim = {tv_sec = 1565076521, tv_nsec = 998570962}, __glibc_reserved = {0, 0, 0}}
__func__ = "main"
Maybe our problem correlate with https://github.com/kamailio/kamailio/issues/1860