#27813: Tor 0.3.4.8 is leaking memory
-------------------------------------------------+-------------------------
Reporter: anong | Owner: (none)
Type: defect | Status:
| needs_information
Priority: Very High | Milestone: Tor:
| 0.3.5.x-final
Component: Core Tor/Tor | Version: Tor:
| 0.3.4.8
Severity: Critical | Resolution:
Keywords: regression? memleak oom | Actual Points:
034-backport tor-relay 035-must |
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by Christian):
Replying to [comment:20 arma]:
> What's in your torrc? Can you simplify it to the point that it's super
simple, yet you still experience this problem?
I didn't touch torrc in a long time, except now for adding and tweaking
`MaxMemInQueues`:
{{{
$ grep ^[A-Z] /etc/tor/torrc
SOCKSPort 0
Log notice file /var/log/tor/notices.log
RunAsDaemon 0 # SystemD needs this to be 0
DataDirectory /var/lib/tor
ControlPort 9051
HashedControlPassword xxxx
ORPort 9001
Nickname foobar
RelayBandwidthRate 1024 KBytes
RelayBandwidthBurst 1536 KBytes
AccountingStart week 1 00:00
ContactInfo XXX
DirPort 9030
MyFamily $xxxx, $xxxx
ExitPolicy reject *:*
ExitRelay 0
DisableDebuggerAttachment 0
MaxMemInQueues 256 MB
}}}
I haven't had a OOM-killing in two days now and I like to imagine that
switching from `zram` to `zswap` magically helped, maybe. I tried running
`tor` under `Valgrind` but don't don't know if I did it right and it
didn't report any leaks:
{{{
==1697== Command: /usr/bin/tor -f /etc/tor/torrc --pidfile
/var/run/tor/tor.pid --log notice\ file\ /var/log/tor/tor.log
--runasdaemon 1 --datadirectory /var/lib/tor --user tor
[...]
==1699== LEAK SUMMARY:
==1699== definitely lost: 0 bytes in 0 blocks
==1699== indirectly lost: 0 bytes in 0 blocks
==1699== possibly lost: 864 bytes in 3 blocks
==1699== still reachable: 34,118 bytes in 206 blocks
==1699== suppressed: 0 bytes in 0 blocks
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27813#comment:27>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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