Closed #296.
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Thanks, we're trying to serve as large amount as we can on a single kamailio
server.
Anyway, after some test, I found the problem may related to debug level.
If I switch on memdbg, it'll have a HUGE impact to kamailio and cause TCP
connection drop.
If I leave debug=-2, then it runs well.
Normal
It looks like a lot of tcp connections are open (over 15 000) -- for each of
them is allocated the read/write buffer. Do you expect so many tcp connections?
If yes, then you need to allocate more memory for kamailio, it runs out of it.
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Looks like problems not in jsonrpc-c now?
points of the command `kamcmd corex.shm_summary` issued
```
root@SIP-B03:/home/pkg/kamailio/etc/kamailio# kamcmd core.shmmem
{
total: 268435456
free: 7586408
used: 259640648
real_used: 260849048
max_used: 2608
Back to this after some time caught with other stuff.
The status with the list of free chunks doesn't help at all.
To get the summary, try:
```
memlog=1
```
in kamailio.cfg
Then, at runtime issue the command:
```
kamcmd corex.shm_summary
```
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I played some human reaction game with kamailio, try to issue `kamailio stop`
when I saw shm go down near 0 to get the shm status.
hope this helps.
I can play more games if you need : )
### FIRST: missed the point, syslog AFTER kamailio just free shm
**below is time sequence where I stop kamai
There are lots of
```
Aug 28 23:04:05 SIP-B03 /home/pkg/kamailio/sbin/kamailio[35260]: :
[mem/f_malloc.c:431]: fm_malloc(): fm_malloc(0x7f3b170e, 64) called from
jsonrpc-c: jsonrpc_request.c: jsonrpc_notification(135)
```
but no statistics, since it will not shutdown or SIGUSR1.
I test un
I was looking for the summary printed in syslog, like you attached in a comment
before, eg:
```
Aug 24 14:39:41 SIP-6 /home/pkg/kamailio/sbin/kamailio[263619]: : fm_status:
-
Aug 24 14:39:41 SIP-6 /home/pkg/kamailio/sbin/kamailio[263619]: :
[main.c:569]: cleanup():
This is initial state kamailio just restart
```
root@SIP-B03:~# kamcmd core.shmmem
{
total: 536870912
free: 531530384
used: 5295024
real_used: 5340528
max_used: 5340528
fragments: 2
}
```
begin test:
issue command `kamcmd.shmmem` withi
Can you get the shm summary again, when shm free is very low?
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I compiled brand new kamailio, and use my kamailio.cfg
```
$> git branch -v
* master ec0ba37 jsonrpc-c: proper error handling for pipe cmd callback
$> kamcmd core.info
{
version: kamailio 4.4.0-dev2
id: ec0ba3
compiler: gcc 4.7.2
compiled: 22:33:06 Aug 27 2015
I will recompile and test it from the latest master branch
ec0ba37b9f2b6c60303227ea0527d69896f2930e
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Pushed a commit for it, including some other cleanup operations.
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@que273 great hit, thanks! It is missing a return there ...
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Are the backtrace and the syslog messages from the same case? One is reporting
a crash at line 551 and the other at 553.
```
(gdb) frame 3
#3 0x7fe5d724f9ea in free_pipe_cmd (cmd=0x7fe5dca4a1d0) at jsonrpc_io.c:551
```
```
Aug 26 13:53:49 SIP-B03 /home/pkg/kamailio/sbin/kamailio[108633]: :
Hi,
I think your problem is at line 238
```
@@ -237,6 +236,10 @@
pkg_free(ns);
json_object_put(payload);
+ if (cmd->notify_only) free_pipe_cmd(cmd);
+error:
+ if (cmd->notify_only) free_pipe_cmd(cmd);
+ return;
}
```
You are calling free_pipe_cmd before and after the error: label
H
oh, sorry for the chaos.
here it is:
bt_AFTER_patch.corefile
```
(gdb) frame 3
#3 0x7fe5d724f9ea in free_pipe_cmd (cmd=0x7fe5dca4a1d0) at jsonrpc_io.c:551
551 shm_free(cmd->method);
(gdb) l
546
547
548 void free_pipe_cmd(struct jsonrpc_pipe_cmd *cmd)
549 {
5
Can you get what is at modules/jsonrpc-c/jsonrpc_io.c line 551?
You applied the patch to your version and I cannot match in the source code.
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Attach **kamailio syslog** when crash:
BEFORE_patch.syslog
```
Aug 26 13:45:42 SIP-B03 kernel: [29523793.119992] kamailio[106903]: segfault at
0 ip 7fdc4c1e03bf sp 751d9450 error 4 in
libjson.so.0.1.0[7fdc4c1dc000+9000]
Aug 26 13:45:42 SIP-B03 /home/pkg/kamailio/sbin/kamailio[
bt_BEFORE_patch.corefile with frame3 p *cmd
**Addition gdb command**
```
frame 3
p *cmd
```
**Output**
```
#3 0x7fdc4c3eae1a in cmd_pipe_cb (fd=6, event=2, arg=0x751d9750) at
jsonrpc_io.c:152
152 json_object *payload = NULL;
$1 = {method = 0x0, params = 0x0, cb_route = 0x
I'm afraid that core files has been deleted.
Anyway, after test your patch, it seems there are still have issues.
So, let's from the ground up again:
I will attach **two** back trace below,
one is crashed **BEFORE your patch** that I reproduced, the other one is
crashed **AFTER your patch**
I pushed a patch to fix the leak -- it is in master branch
79459d3f87731309641794a2b881ee1cacc5e1f2
If you test it and report it solves the leak, I will backport.
For the crash, not sure it is related, can you get the output in gdb for the
next commands?
```
frame 4
p *cmd
```
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Use Case Description:
I'm trying to log "user last register status" using function
`jsonrpc_notification` from module `jsonrpc-c`
# invoke in kamailio.cfg:
`jsonrpc_notification("last_reg", "{'user': '$au', 'data':['$Ts', '$au', '$ct',
'$ua', '$sel(received.proto_ip_port)']}");`
**acc
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