[tor-bugs] #23885 [Core Tor/Tor]: Assertion crash after circuit_handle_oom() has been called

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#23885: Assertion crash after circuit_handle_oom() has been called
------------------------------+--------------------------
     Reporter:  Jaym          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.1.7
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------
 Oct 16 05:15:23.000 [notice] We're low on memory.  Killing circuits with
 over-long queues. (This behavior is controlled by MaxMemInQueues.)
 Oct 16 05:15:23.000 [notice] Removed 16912 bytes by killing 102 circuits;
 0 circuits remain alive. Also killed 2 non-linked directory connections.
 Oct 16 05:19:23.000 [notice] We're low on memory.  Killing circuits with
 over-long queues. (This behavior is controlled by MaxMemInQueues.)
 Oct 16 05:19:23.000 [notice] Removed 37392 bytes by killing 28 circuits; 0
 circuits remain alive. Also killed 2 non-linked directory connections.
 Oct 16 05:19:23.000 [err] tor_assertion_failed_(): Bug:
 ../src/or/buffers.c:801: flush_buf: Assertion *buf_flushlen <=
 buf->datalen failed; aborting. (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug: Assertion *buf_flushlen <= buf->datalen
 failed in flush_buf at ../src/or/buffers.c:801. Stack trace: (on Tor
 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(log_backtrace+0x42)
 [0x55e352e8bd92] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:
 /usr/bin/tor(tor_assertion_failed_+0x8c) [0x55e352ea4a0c] (on Tor 0.3.1.7
 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(flush_buf+0x2a7)
 [0x55e352dddb07] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(+0x108b5b)
 [0x55e352e28b5b] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:
 /usr/bin/tor(connection_handle_write+0x2e) [0x55e352e2975e] (on Tor
 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(+0x4e18e) [0x55e352d6e18e]
 (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0x7fc) [0x7fcce52ba3dc] (on Tor
 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(do_main_loop+0x2a4)
 [0x55e352d6f4d4] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(tor_main+0x1c35)
 [0x55e352d72e55] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(main+0x19)
 [0x55e352d6abd9] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /lib/x86_64-linux-
 gnu/libc.so.6(__libc_start_main+0xf5) [0x7fcce3e44b45] (on Tor 0.3.1.7 )
 Oct 16 05:19:23.000 [err] Bug:     /usr/bin/tor(+0x4ac29) [0x55e352d6ac29]
 (on Tor 0.3.1.7 )


 It happened over a new exit relay (low consensus) with 2GB memory.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23885>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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