New subject: [kamailio/kamailio] statsc module - server crashes every 10 hours (#2101)

15 Oct 2019


      ### Description
<!--
Kamailoi crashes every 10 hours
-->
### Troubleshooting
coredump data below.
#### Reproduction
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If the issue can be reproduced, describe how it can be done.
-->
#### Debugging Data
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If you got a core dump, use gdb to extract troubleshooting data - full backtrace,
local variables and the list of the code at the issue location.
gdb /path/to/kamailio /path/to/corefile
  bt full
  info locals
  list
If you are familiar with gdb, feel free to attach more of what you consider to
be relevant.
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```
(gdb)   bt full
#0  0x000000000046ccdd in get_hash1_raw (s=0x5da51296 <Address 0x5da51296 out of bounds>, len=9) at core/hashes.h:109
        p = 0x5da51296 <Address 0x5da51296 out of bounds>
        v = 4100353960
        h = 0
#1  0x000000000046cfb6 in str_hash_get (ht=0xa6d6c0 <cnts_hash_table>, key=0x5da51296 <Address 0x5da51296 out of bounds>, len=9) at core/str_hash.h:94
        h = 0
        e = 0x19
#2  0x000000000046debe in cnt_hash_lookup (group=0x7ffc2db9d7c0, name=0x7eff79693b80) at core/counters.c:420
        e = 0x7eff80c48c88
        first = 0xbd8191bc2e950d55
        cnt_rec = 0x7eff80c48cb0
#3  0x000000000046e752 in counter_lookup_str (handle=0x7ffc2db9d7d0, group=0x7ffc2db9d7c0, name=0x7eff79693b80) at core/counters.c:541
        cnt_rec = 0x19
#4  0x00007eff7d65b447 in get_stat (name=0x7eff79693b80) at ../../core/counters.h:197
        h = {id = 13}
        grp = {s = 0x0, len = 0}
#5  0x00007eff7d65c113 in statsc_svalue (name=0x7eff79693b80, res=0x7eff79693f4b) at statsc_mod.c:149
        stat = 0xd
        __FUNCTION__ = "statsc_svalue"
#6  0x00007eff7d65db79 in statsc_timer (ticks=113205942, param=0x0) at statsc_mod.c:274
        sm = 0x7eff79693b70
        tn = 1571099286
        n = 115
        __FUNCTION__ = "statsc_timer"
#7  0x00000000005db7f9 in sr_wtimer_exec (ticks=113205942, param=0x0) at core/timer_proc.c:390
        wt = 0x7eff80c56f48
        wn = 0x0
        wp = 0x0
        cs = 0
        __FUNCTION__ = "sr_wtimer_exec"
#8  0x00000000005daa29 in fork_sync_timer (child_id=-1, desc=0x7c8a71 "secondary timer", make_sock=1, f=0x5db4f2 <sr_wtimer_exec>, param=0x0, interval=1000) at core/timer_proc.c:224
        pid = 0
        ts1 = 1811295077
        ts2 = 1000
#9  0x00000000005dbb26 in sr_wtimer_start () at core/timer_proc.c:416
        __FUNCTION__ = "sr_wtimer_start"
#10 0x0000000000425a33 in main_loop () at main.c:1729
        i = 8
        pid = 3615
        si = 0x0
        si_desc = "udp receiver child=7 sock=91.216.86.57:5060\000\377~\000\000@۹-\374\177\000\000\020\207A\000\000\000\000\000\020\336\271-\374\177\000\000\323c{\000\000\000\000\000\031\000\000\000\000\000\000\000\000\000\000\004\000\000\000\000\000\000\200\000\000\000\000\000__:\201\377~\000\000\250\346\260v\377~\000\000\270\314À\377~\000"
        nrprocs = 8
        woneinit = 1
        __FUNCTION__ = "main_loop"
#11 0x000000000042c72a in main (argc=7, argv=0x7ffc2db9def8) at main.c:2696
        cfg_stream = 0x1ee3010
        c = -1
        r = 0
        tmp = 0x7ffc2db9ef2c ""
        tmp_len = 0
        port = 0
        proto = 0
        options = 0x76a9a0 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:"
        ret = -1
---Type <return> to continue, or q <return> to quit---  info locals
        seed = 2620966285
        rfd = 4
        debug_save = 0
        debug_flag = 0
        dont_fork_cnt = 0
        n_lst = 0x2
        p = 0x0
        st = {st_dev = 20, st_ino = 22346, 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 = 1568107728, tv_nsec = 458000000}, st_mtim = {
            tv_sec = 1571064422, tv_nsec = 57000000}, st_ctim = {tv_sec = 1571064422, tv_nsec = 57000000}, __unused = {0, 0, 0}}
        __FUNCTION__ = "main"
(gdb)   list
104             register unsigned v;
105             register unsigned h;
106
107             h=0;
108
109             hash_update_str(s, s+len, p, v, h);
110             return hash_finish(h);
111     }
112
113
```
#### Log Messages
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Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
no relevant messages
```
#### SIP Traffic
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If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
seems to be triggered by internal timer
```
### Possible Solutions
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If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
-->
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 5.2.4 (x86_64/linux) 759867
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 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_BLACKLIST, 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: 759867
compiled on 12:20:22 Sep 11 2019 with gcc 4.8.5
```
* **Operating System**:
<!--
CentOS Linux release 7.4.1708 (Core)
Linux xxx 3.10.0-957.12.2.el7.x86_64 #1 SMP Tue May 14 21:24:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
-->
```
CentOS Linux release 7.4.1708 (Core)
Linux xxx 3.10.0-957.12.2.el7.x86_64 #1 SMP Tue May 14 21:24:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
```
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[kamailio/kamailio] server crashes every 10 hours (#2101)