[tor-bugs] #24086 [Core Tor/Tor]: consdiffmgr.c:637: consdiffmgr_find_diff_from: Non-fatal assertion !(ent->entry == NULL) failed

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#24086: consdiffmgr.c:637: consdiffmgr_find_diff_from: Non-fatal assertion
!(ent->entry == NULL) failed
------------------------------+--------------------------------
     Reporter:  cypherpunks   |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.2.2-alpha
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------
 found this in the logs (maybe the system was just running out of memory)

 {{{
  tor_bug_occurred_(): Bug: ../src/or/consdiffmgr.c:637:
 consdiffmgr_find_diff_from: Non-fatal assertion !(ent->entry == NULL)
 failed. (on Tor 0.3.2.2-alpha )
  Bug: Non-fatal assertion !(ent->entry == NULL) failed in
 consdiffmgr_find_diff_from at ../src/or/consdiffmgr.c:637. Stack trace:
 (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(log_backtrace+0x44) [0x55f6dd5a54d4] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(tor_bug_occurred_+0xb9) [0x55f6dd5c0619] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(consdiffmgr_find_diff_from+0x20d) [0x55f6dd53cb9d]
 (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(+0x135793) [0x55f6dd557793] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(connection_dir_process_inbuf+0x721)
 [0x55f6dd552651] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(+0x10aa0e) [0x55f6dd52ca0e] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(+0x50dae) [0x55f6dd472dae] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0x6a0) [0x7fd9b60b95a0] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(do_main_loop+0x29d) [0x55f6dd473ead] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(tor_main+0x1c25) [0x55f6dd4779b5] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(main+0x19) [0x55f6dd46f649] (on Tor 0.3.2.2-alpha )
  Bug:     /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)
 [0x7fd9b4b1b2b1] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(_start+0x2a) [0x55f6dd46f69a] (on Tor 0.3.2.2-alpha
 )
  tor_bug_occurred_(): Bug: ../src/or/consdiffmgr.c:637:
 consdiffmgr_find_diff_from: Non-fatal assertion !(ent->entry == NULL)
 failed. (on Tor 0.3.2.2-alpha )
  Bug: Non-fatal assertion !(ent->entry == NULL) failed in
 consdiffmgr_find_diff_from at ../src/or/consdiffmgr.c:637. Stack trace:
 (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(log_backtrace+0x44) [0x55f6dd5a54d4] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(tor_bug_occurred_+0xb9) [0x55f6dd5c0619] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(consdiffmgr_find_diff_from+0x20d) [0x55f6dd53cb9d]
 (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(+0x135793) [0x55f6dd557793] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(connection_dir_process_inbuf+0x721)
 [0x55f6dd552651] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(+0x10aa0e) [0x55f6dd52ca0e] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(+0x50dae) [0x55f6dd472dae] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0x6a0) [0x7fd9b60b95a0] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(do_main_loop+0x29d) [0x55f6dd473ead] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(tor_main+0x1c25) [0x55f6dd4779b5] (on Tor
 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(main+0x19) [0x55f6dd46f649] (on Tor 0.3.2.2-alpha )
  Bug:     /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)
 [0x7fd9b4b1b2b1] (on Tor 0.3.2.2-alpha )
  Bug:     /usr/bin/tor(_start+0x2a) [0x55f6dd46f69a] (on Tor 0.3.2.2-alpha
 )
  Error from LZMA encoder: Unable to allocate memory (5).
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24086>
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