23 Mar
2023
23 Mar
'23
2:47 a.m.
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### Description
<!--
Explain what you did, what you expected to happen, and what actually happened.
-->
nat module crashes if app_lua initialize fail.
### Troubleshooting
#### Reproduction
<!--
If the issue can be reproduced, describe how it can be done.
-->
kamailio.cfg
```txt
### kamailio5.6.4
debug=2
log_stderror=no
memdbg=5
memlog=5
log_facility=LOG_LOCAL0
log_prefix="{$mt $hdr(CSeq) $ci} "
children=4
auto_aliases=no
enable_sctp=no
# listen=udp:192.168.31.63:5060
# mpath="/usr/local/lib/kamailio/modules/"
loadmodule "kex.so"
loadmodule "corex.so"
loadmodule "tm.so"
loadmodule "tmx.so"
loadmodule "sl.so"
loadmodule "pv.so"
loadmodule "xlog.so"
loadmodule "ctl.so"
loadmodule "cfg_rpc.so"
loadmodule "nats.so"
loadmodule "app_lua.so"
# modparam("ctl", "binrpc",
"unix:/run/kamailio/kamailio_ctl")
modparam("nats", "nats_url", "nats://127.0.0.1:4222")
modparam("nats", "num_publish_workers", 1)
modparam("nats", "subject_queue_group", "sipserver:group")
modparam("app_lua", "load", "/etc/kamailio/kamailio.lua")
request_route {
sl_send_reply("200", "OK");
}
```
kamailio.lua
```lua
cjson = require "cjson" -- but without cjson
```
#### Debugging Data
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gdb kamailio core
```txt
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `kamailio'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f6691e9c62b in ?? () from /lib/x86_64-linux-gnu/libuv.so.1
[Current thread is 1 (Thread 0x7f6692ac9740 (LWP 82969))]
bt
#0 0x00007f6691e9c62b in ?? () from /lib/x86_64-linux-gnu/libuv.so.1
#1 0x00007f6691ea3856 in ?? () from /lib/x86_64-linux-gnu/libuv.so.1
#2 0x00007f6691ea398f in uv_poll_stop () from /lib/x86_64-linux-gnu/libuv.so.1
#3 0x00007f6691f48b81 in nats_destroy_workers () at nats_mod.c:601
#4 0x00007f6691f48c01 in mod_destroy () at nats_mod.c:614
#5 0x000055dad0bb4752 in destroy_modules () at core/sr_module.c:842
#6 0x000055dad0977132 in cleanup (show_status=0) at main.c:561
#7 0x000055dad0978d97 in shutdown_children (sig=15, show_status=0) at main.c:704
#8 0x000055dad0993c7b in main (argc=1, argv=0x7ffd4ca63688) at main.c:3093
bt full
#0 0x00007f6691e9c62b in ?? () from /lib/x86_64-linux-gnu/libuv.so.1
No symbol table info available.
#1 0x00007f6691ea3856 in ?? () from /lib/x86_64-linux-gnu/libuv.so.1
No symbol table info available.
#2 0x00007f6691ea398f in uv_poll_stop () from /lib/x86_64-linux-gnu/libuv.so.1
No symbol table info available.
#3 0x00007f6691f48b81 in nats_destroy_workers () at nats_mod.c:601
i = 0
worker = 0x7f668dceee10
pub_worker = 0x7f668dceeeb0
__func__ = "nats_destroy_workers"
#4 0x00007f6691f48c01 in mod_destroy () at nats_mod.c:614
__func__ = "mod_destroy"
#5 0x000055dad0bb4752 in destroy_modules () at core/sr_module.c:842
t = 0x7f6692368870
foo = 0x7f6692366d20
__func__ = "destroy_modules"
#6 0x000055dad0977132 in cleanup (show_status=0) at main.c:561
memlog = 0
__func__ = "cleanup"
#7 0x000055dad0978d97 in shutdown_children (sig=15, show_status=0) at main.c:704
__func__ = "shutdown_children"
#8 0x000055dad0993c7b in main (argc=1, argv=0x7ffd4ca63688) at main.c:3093
cfg_stream = 0x55dad295c380
c = -1
r = 0
tmp = 0x100000000 <error: Cannot access memory at address 0x100000000>
tmp_len = 0
port = 895
proto = 0
ahost = 0x0
aport = 0
options = 0x55dad0db4278
":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 = 193248401
rfd = 4
debug_save = 0
debug_flag = 0
dont_fork_cnt = 0
n_lst = 0xc000
p = 0x0
--Type <RET> for more, q to quit, c to continue without paging--
st = {st_dev = 22, st_ino = 830, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid
= 0, __pad0 = 0, st_rdev = 0, st_size = 60, st_blksize = 4096, st_blocks = 0,
st_atim = {tv_sec = 1679270080, tv_nsec = 182554285}, st_mtim = {tv_sec =
1679531455, tv_nsec = 805444368}, st_ctim = {tv_sec = 1679531455, tv_nsec = 805444368},
__glibc_reserved = {0, 0, 0}}
tbuf =
"\000\000\000\000\000\000\000\000\377\377\377\377\000\000\000\000x\230ْf\177\000\000кܒf\177",
'\000' <repeats 42 times>,
"pvْf\177\000\000\r\000\000\000\000\000\000\000\230\341ɒf\177\000\000\230\066\246L\375\177\000\000H\355\350\320\332U\000\000
\260ܒf\177\000\000\256\217ڒf\177\000\000\001", '\000' <repeats 15
times>,
"x\230ْf\177\000\000\300\370ڒf\177\000\000\274\032\255\222f\177\000\000\000\066\246L\375\177\000\000\001",
'\000' <repeats 15 times>,
"\230\066\246L\375\177\000\000ڱڒf\177\000\000\000\000\000\000\000\000\000\000"...
option_index = 0
long_options = {{name = 0x55dad0db66e6 "help", has_arg = 0, flag = 0x0,
val = 104}, {name = 0x55dad0db1524 "version", has_arg = 0, flag = 0x0, val =
118}, {
name = 0x55dad0db66eb "alias", has_arg = 1, flag = 0x0, val = 1024},
{name = 0x55dad0db66f1 "subst", has_arg = 1, flag = 0x0, val = 1025}, {
name = 0x55dad0db66f7 "substdef", has_arg = 1, flag = 0x0, val =
1026}, {name = 0x55dad0db6700 "substdefs", has_arg = 1, flag = 0x0, val = 1027},
{
name = 0x55dad0db670a "server-id", has_arg = 1, flag = 0x0, val =
1028}, {name = 0x55dad0db6714 "loadmodule", has_arg = 1, flag = 0x0, val =
1029}, {
name = 0x55dad0db671f "modparam", has_arg = 1, flag = 0x0, val =
1030}, {name = 0x55dad0db6728 "log-engine", has_arg = 1, flag = 0x0, val =
1031}, {
name = 0x55dad0db6733 "debug", has_arg = 1, flag = 0x0, val = 1032},
{name = 0x55dad0db6739 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {
name = 0x55dad0db6743 "atexit", has_arg = 1, flag = 0x0, val =
1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}}
__func__ = "main"
```
#### Log Messages
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```
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```
#### SIP Traffic
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in a pcap file, then add them next, or attach to issue, or provide a link to download them
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```
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```
### Possible Solutions
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request with a fix.
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### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
kamailio 5.6.4 (x86_64/linux) a004cf
```
* **Operating System**:
<!--
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CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
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```
Debian11
```
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