[strongSwan] Memory leak in charon?

[Andreas Steffen]

Memory leaks are written to the log when the charon daemon exits and
all memory is released. Sending a HUP doesn't help.

On 05.08.22 15:21, Michael Schwartzkopff wrote:
> On 05.08.22 14:36, Andreas Steffen wrote:
>> Hi Michael,
>>
>> I'm not aware of any memory leak that we fixed. You could run charon
>> compiled with the --enable-leak-detective configure option and check
>> for any memory leaks when you stop the daemon.
>>
>> Regards
>>
>> Andreas
>>
> 
> Thanks for the fast response. It is reported to the log file? Is the any 
> "hup" to get the report in the fly?
> 
> 
> 
> 
> 
>> On 05.08.22 09:46, Michael Schwartzkopff wrote:
>>> Hi,
>>>
>>>
>>> we have a strongswan 5.9.5 installed on a embedded device.
>>>
>>> We see a increase of memory usage of the charon process of about 200 
>>> kB/hour.
>>>
>>> The leak might be somehow connected to rekeying since the leak rate 
>>> was reduced with the rekeying rate. Also perhaps to logging, since we 
>>> reduced verbosity to decrease leak rate.
>>>
>>>
>>> As far as I read the changelog, no memory leak was fixed in 5.9.6 and 
>>> 5.9.7.
>>>
>>>
>>> Any idea how to proceed to pin down the cause of the leak? 200 kB/h 
>>> impacts the embedded device.
======================================================================
Andreas Steffen                         andreas.steffen at strongswan.org
strongSwan - the Open Source VPN Solution!          www.strongswan.org
strongSec GmbH, 8952 Schlieren (Switzerland)
======================================================================