**Issue Description:** Kamailio is running with htable module having following parameter configuration: `modparam("htable", "htable", "flags=>size=6;dbtable=htable;autoexpire=0;dbmode=1") ` So, If there is an error in kamailio cfg then crash is observed in htable module. Here, I believe when kamailio goes to sync in memory htable content to the DB it crashes. **Troubleshooting** with dbmode=0 crash is not observed. **Steps to Reproduce** 1. Add entries in htable(DB) of mariadb. 2. Intentionally add some error in kamailio.cfg (i.e. remove colon at the end of any line) 3. start kamailio 4. kamailio wont come up as there is an error in kamailio.cfg 5. And while kamailio is shutting down there is a crash in htable 6. Now, check entries in htable(DB)of mariadb which gets empty **Kamailio Cfg** ``` modparam("htable", "htable", "flags=>size=6;dbtable=htable;autoexpire=0;dbmode=1") modparam("htable", "db_url", DBURL) # HTable Init event_route[htable:mod-init] { $sht(flags=>disable_sip_message_processing) = 0; xlog("L_INFO", "Init: disable_sip_message_processing $sht(flags=>disable_sip_message_processing)\n"); } ``` **Debugging Data:** ``` $ gdb /usr/local/kamailio-5.5/sbin/kamailio /tmp/core.kamailio.103011.N1VL-PA-SIP01.1649823318 GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-120.el7 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/local/kamailio-5.5/sbin/kamailio...done. warning: exec file is newer than core file. [New LWP 103011] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `/usr/local/kamailio-5.5/sbin/kamailio -D -P /run/kamailio/kamailio.pid -f /usr/'. Program terminated with signal 11, Segmentation fault. #0 0x00007f5b54995755 in atomic_get (v=0x14) at ../../core/mem/../atomic/atomic_common.h:66 66 return atomic_get_int(&(v->val)); Missing separate debuginfos, use: debuginfo-install glibc-2.17-324.el7_9.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-50.el7.x86_64 libcom_err-1.42.9-19.el7.x86_64 libgcc-4.8.5-44.el7.x86_64 libselinux-2.5-15.el7.x86_64 libstdc++-4.8.5-44.el7.x86_64 mariadb-libs-5.5.68-1.el7.x86_64 openssl-libs-1.0.2k-21.el7_9.x86_64 pcre-8.32-17.el7.x86_64 zlib-1.2.7-19.el7_9.x86_64 (gdb) bt full #0 0x00007f5b54995755 in atomic_get (v=0x14) at ../../core/mem/../atomic/atomic_common.h:66 No locals. #1 0x00007f5b54996d51 in ht_slot_lock (ht=0x7f5b504de738, idx=0) at ht_api.c:153 mypid = 103011 #2 0x00007f5b5498e3fb in ht_db_save_table (ht=0x7f5b504de738, dbtable=0x7f5b504de750) at ht_db.c:577 db_cols = {0x7f5b54bd83f0 <ht_db_name_column>, 0x7f5b54bd8400 <ht_db_ktype_column>, 0x7f5b54bd8410 <ht_db_vtype_column>, 0x7f5b54bd8420 <ht_db_value_column>, 0x7f5b54bd8430 <ht_db_expires_column>} db_vals = {{type = 8527368, nul = 0, free = 6, val = {int_val = -874111776, ll_val = 140723729341664, double_val = 6.9526760222378001e-310, time_val = 140723729341664, string_val = 0x7ffccbe61ce0 "\300\035\346\313\374\177", str_val = {s = 0x7ffccbe61ce0 "\300\035\346\313\374\177", len = 1532402903}, blob_val = { s = 0x7ffccbe61ce0 "\300\035\346\313\374\177", len = 1532402903}, bitmap_val = 3420855520, uint_val = 3420855520, ull_val = 140723729341664}}, { type = 1532380141, nul = 32603, free = 6, val = {int_val = 0, ll_val = 0, double_val = 0, time_val = 0, string_val = 0x0, str_val = {s = 0x0, len = 0}, blob_val = { s = 0x0, len = 0}, bitmap_val = 0, uint_val = 0, ull_val = 0}}, {type = DB1_INT, nul = 0, free = 1535278736, val = {int_val = -874111552, ll_val = 140723729341888, double_val = 6.9526760222488671e-310, time_val = 140723729341888, string_val = 0x7ffccbe61dc0 "\260\036\346\313\374\177", str_val = { s = 0x7ffccbe61dc0 "\260\036\346\313\374\177", len = 1419312224}, blob_val = {s = 0x7ffccbe61dc0 "\260\036\346\313\374\177", len = 1419312224}, bitmap_val = 3420855744, uint_val = 3420855744, ull_val = 140723729341888}}, {type = 1532429419, nul = 32603, free = 48, val = {int_val = -874111488, ll_val = 140723729341952, double_val = 6.9526760222520291e-310, time_val = 140723729341952, string_val = 0x7ffccbe61e00 "\260\036\346\313\374\177", str_val = { s = 0x7ffccbe61e00 "\260\036\346\313\374\177", len = -874111728}, blob_val = {s = 0x7ffccbe61e00 "\260\036\346\313\374\177", len = -874111728}, bitmap_val = 3420855808, uint_val = 3420855808, ull_val = 140723729341952}}, {type = 1544071712, nul = 32603, free = 8527368, val = {int_val = 8527368, ll_val = 8527368, double_val = 4.2130795782459789e-317, time_val = 8527368, string_val = 0x821e08 "DEBUG", str_val = {s = 0x821e08 "DEBUG", len = 0}, blob_val = { s = 0x821e08 "DEBUG", len = 0}, bitmap_val = 8527368, uint_val = 8527368, ull_val = 8527368}}} it = 0x0 tmp = {s = 0x7f5b549cdfcb "lid parameters\n", len = 1544071712} i = 0 now = 1649823318 ncols = 3 __FUNCTION__ = "ht_db_save_table" #3 0x00007f5b549a3c7d in ht_db_sync_tables () at ht_api.c:1078 ht = 0x7f5b504de738 __FUNCTION__ = "ht_db_sync_tables" #4 0x00007f5b549ac4cc in destroy () at htable.c:321 No locals. #5 0x0000000000590523 in destroy_modules () at core/sr_module.c:839 t = 0x7f5b5b83bd08 foo = 0x7f5b5b83b520 __FUNCTION__ = "destroy_modules" #6 0x000000000041d7da in cleanup (show_status=0) at main.c:575 memlog = 0 __FUNCTION__ = "cleanup" #7 0x000000000041f0b5 in shutdown_children (sig=15, show_status=0) at main.c:718 __FUNCTION__ = "shutdown_children" #8 0x0000000000436825 in main (argc=12, argv=0x7ffccbe62688) at main.c:3068 cfg_stream = 0xba2050 c = -1 r = 0 ---Type <return> to continue, or q <return> to quit--- tmp = 0x7ffccbe6466c "" tmp_len = 1408 port = 896 proto = 32603 ahost = 0x0 aport = 0 options = 0x7df0f8 ":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 = 513568880 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffccbe62540 p = 0xf0b5ff <Address 0xf0b5ff out of bounds> st = {st_dev = 0, st_ino = 0, st_nlink = 0, st_mode = 0, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 0, st_blksize = 0, st_blocks = 0, st_atim = { tv_sec = 0, tv_nsec = 0}, st_mtim = {tv_sec = 0, tv_nsec = 0}, st_ctim = {tv_sec = 0, tv_nsec = 0}, __unused = {0, 0, 0}} tbuf = '\000' <repeats 392 times>... option_index = 0 long_options = {{name = 0x7e150f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7dc584 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7e1514 "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x7e151a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7e1520 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7e1529 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x7e1533 "server-id", has_arg = 1, flag = 0x0, val = 1028}, { name = 0x7e153d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7e1548 "modparam", has_arg = 1, flag = 0x0, val = 1030}, { name = 0x7e1551 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7e155c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7e1562 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x7e156c "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) ``` **Additional Information** - Kamailio Version: ``` [root@N1VL-PA-SIP01 kamailio]# /usr/local/kamailio-5.5/sbin/kamailio -V version: kamailio 5.5.2 (x86_64/linux) e5f5a8 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: e5f5a8 compiled on 19:07:54 Apr 12 2022 with gcc 4.8.5 ``` - Operating System: ``` $ cat /etc/os-release NAME="Red Hat Enterprise Linux Server" VERSION="7.9 (Maipo)" ID="rhel" ID_LIKE="fedora" VARIANT="Server" VARIANT_ID="server" VERSION_ID="7.9" PRETTY_NAME="Red Hat Enterprise Linux Server 7.9 (Maipo)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:redhat:enterprise_linux:7.9:GA:server" HOME_URL="https://www.redhat.com/" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7" REDHAT_BUGZILLA_PRODUCT_VERSION=7.9 REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux" REDHAT_SUPPORT_PRODUCT_VERSION="7.9" ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3082 You are receiving this because you are subscribed to this thread. 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