[tor-bugs] #27813 [Core Tor/Tor]: Tor 0.3.4.8 is leaking memory

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat Oct 27 17:44:13 UTC 2018


#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:
-------------------------------------------------+-------------------------

Comment (by starlight):

 Reading this ticket and #28089 a potential concern comes to mind.  In my
 experience the Linux kernel is fastidious in releasing skb memory when
 sockets close, which leads to the question: is an additional bug present
 in KIST where sockets are leaked?  For kernel memory consumption to grow
 unbounded while the relay daemon continues to function correctly, a socket
 leak or stranding would appear necessary.  I do not know this code and
 someone familiar with it would be in a better position to consider the
 possibility.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27813#comment:29>
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