[tor-bugs] #24977 [Core Tor/Tor]: Non-fatal assertion !(tor_mem_is_zero((const char*)node->hsdir_index->fetch, DIGEST256_LEN))

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#24977: Non-fatal assertion !(tor_mem_is_zero((const
char*)node->hsdir_index->fetch, DIGEST256_LEN))
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:  dgoulet
     Type:  defect                               |         Status:
                                                 |  accepted
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.4.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.3.2.1-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, prop224,                     |  Actual Points:
  034-triage-20180328, 034-removed-20180502      |
Parent ID:                                       |         Points:  1
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by asn):

 Thanks for the logs cypherpunks from comment:8. Do you have info logs by
 any chance? That would be really useful.

 Seems like we just triggered the debugging code we added in #25306. See:
 {{{
 should_rotate_descriptors(): Bug: Service descriptor is NULL
 ((nil)/(nil)). Next rotation time is 1526367600 (now: 1526378468). Valid
 after time from consensus is 1526378400 (on Tor 0.3.3.5-rc )
 }}}
 Pretty fun that we end up with both descriptors as NULL.

 This seems like not-so-hard to reproduce by starting up an HS with a hella
 skewed clock, and then setting it up to the right time so that it gets the
 right consensus.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24977#comment:11>
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