Bug#966294: asterisk: memory leak with PJSIP channel

[José Miguel Gonçalves]

Package: asterisk
Version: 1:16.2.1~dfsg-1+deb10u1
Severity: important

Dear Maintainer,

   * What led up to the situation?
     Executing asterisk in a system configured with around 250 VoIP phones using PJSIP, my 8 GB RAM's server rapidly (~ 2 days) rans out of memory.
     The phones are configured for registring in 180 seconds, so I suspect the memory leak is due to the SIP registry process.
     Another symptom that enhances my suspicion is that I see the memory allocated to the asterisk process to increase even without any calls being made.
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
     To workaround this issue I needed to restart every day the asterisk service in a cron job.
   * What was the outcome of this action?
     The server regains the memory lost.


-- System Information:
Debian Release: 10.4
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'stable-updates')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-9-amd64 (SMP w/12 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=pt_PT.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages asterisk depends on:
ii  adduser                  3.118
ii  asterisk-config          1:16.2.1~dfsg-1+deb10u1
ii  asterisk-core-sounds-en  1.6.1-1
ii  asterisk-modules         1:16.2.1~dfsg-1+deb10u1
ii  libc6                    2.28-10
ii  libcap2                  1:2.25-2
ii  libedit2                 3.1-20181209-1
ii  libjansson4              2.12-1
ii  libpopt0                 1.16-12
ii  libsqlite3-0             3.27.2-3
ii  libssl1.1                1.1.1d-0+deb10u3
ii  libsystemd0              245.6-1~bpo10+1
ii  liburiparser1            0.9.1-1
ii  libuuid1                 2.33.1-0.1
ii  libxml2                  2.9.4+dfsg1-7+b3
ii  libxslt1.1               1.1.32-2.2~deb10u1
ii  lsb-base                 10.2019051400

Versions of packages asterisk recommends:
pn  asterisk-moh-opsound-gsm                         <none>
ii  asterisk-voicemail [asterisk-voicemail-storage]  1:16.2.1~dfsg-1+deb10u1
ii  sox                                              14.4.2+git20190427-1

Versions of packages asterisk suggests:
pn  asterisk-dahdi   <none>
pn  asterisk-dev     <none>
pn  asterisk-doc     <none>
pn  asterisk-ooh323  <none>
ii  asterisk-opus    13.7+20171009-2
pn  asterisk-vpb     <none>

-- Configuration Files:
/etc/logrotate.d/asterisk changed:
/var/log/asterisk/debug /var/log/asterisk/messages /var/log/asterisk/full /var/log/asterisk/*_log 
/var/log/asterisk/freepbx.log /var/log/asterisk/freepbx_debug /var/log/asterisk/freepbx_*.log {
        weekly
        missingok
        rotate 12
	compress
        sharedscripts
        postrotate
                /usr/sbin/invoke-rc.d asterisk logger-reload > /dev/null 2> /dev/null
        endscript
}


-- no debconf information