Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
-+-
 Reporter:  a_p  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  High |  Milestone:  Tor:
 |  0.4.1.x-final
Component:  Core Tor/Tor |Version:  Tor:
 |  0.3.4.7-rc
 Severity:  Normal   | Resolution:
 Keywords:  regression 035-must 034-backport |  Actual Points:
  035-backport 040-backport 041-should   |
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+-
Changes (by nickm):

 * keywords:  regression 035-must 034-backport 035-backport 040-backport =>
 regression 035-must 034-backport 035-backport 040-backport 041-should
 * milestone:  Tor: 0.4.0.x-final => Tor: 0.4.1.x-final


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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
-+-
 Reporter:  a_p  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  High |  Milestone:  Tor:
 |  0.4.0.x-final
Component:  Core Tor/Tor |Version:  Tor:
 |  0.3.4.7-rc
 Severity:  Normal   | Resolution:
 Keywords:  regression 035-must 034-backport |  Actual Points:
  035-backport 040-backport  |
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+-
Changes (by teor):

 * keywords:  regression 035-must => regression 035-must 034-backport
 035-backport 040-backport
 * milestone:  Tor: 0.3.5.x-final => Tor: 0.4.0.x-final


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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
-+
 Reporter:  a_p  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  High |  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal   | Resolution:
 Keywords:  regression 035-must  |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by dgoulet):

 Just hit this on a relay Tor 0.4.0.1-alpha 16430fdaf546cf8a: roughly
 20hours after startup:

 {{{
 Jan 17 13:06:59.525 [warn] tor_bug_occurred_(): Bug:
 src/feature/dircache/consdiffmgr.c:279:
 cdm_diff_ht_check_and_note_pending: Non-fatal assertion
 ent->cdm_diff_status != CDM_DIFF_PRESENT failed. (on Tor 0.4.0.1-alpha
 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: Non-fatal assertion ent->cdm_diff_status
 != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at
 src/feature/dircache/consdiffmgr.c:279. Stack trace: (on Tor 0.4.0.1-alpha
 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug:
 /root/git/tor/src/app/tor(log_backtrace_impl+0x45) [0x562981786635] (on
 Tor 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug:
 /root/git/tor/src/app/tor(tor_bug_occurred_+0xc0) [0x562981781c90] (on Tor
 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: /root/git/tor/src/app/tor(+0xe3bc2)
 [0x562981671bc2] (on Tor 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: /usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.6(+0x1ea11) [0x7f6e8bf98a11] (on Tor 0.4.0.1-alpha
 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: /usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.6(event_base_loop+0x53f) [0x7f6e8bf9933f] (on Tor
 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug:
 /root/git/tor/src/app/tor(do_main_loop+0x94) [0x5629815fcb14] (on Tor
 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug:
 /root/git/tor/src/app/tor(tor_run_main+0x122d) [0x5629815e9f1d] (on Tor
 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug:
 /root/git/tor/src/app/tor(tor_main+0x3a) [0x5629815e70ea] (on Tor
 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: /root/git/tor/src/app/tor(main+0x19)
 [0x5629815e6c79] (on Tor 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: /lib/x86_64-linux-
 gnu/libc.so.6(__libc_start_main+0xe7) [0x7f6e8b2a9b97] (on Tor
 0.4.0.1-alpha 16430fdaf546cf8a)
 Jan 17 13:06:59.586 [warn] Bug: /root/git/tor/src/app/tor(_start+0x2a)
 [0x5629815e6cca] (on Tor 0.4.0.1-alpha 16430fdaf546cf8a)
 }}}

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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
-+
 Reporter:  a_p  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  High |  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal   | Resolution:
 Keywords:  regression 035-must  |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by nickm):

 Closed #26395 and #28787 as duplicates of this.

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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
-+
 Reporter:  a_p  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  High |  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal   | Resolution:
 Keywords:  regression 035-must  |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+
Changes (by nickm):

 * keywords:  regression => regression 035-must


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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  High  |  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor  |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal| Resolution:
 Keywords:  regression|  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by nickm):

 So, this means that in `consdiffmgr_rescan()`, we somehow added a value to
 `compute_diffs_from`, but later on we found a corresponding entry in
 cdm_diff_ht that indicated that we already had a value here.

 It might be the case that the old value had the same `target_sha3` (in
 which case we already did compute a value here!) or that the old value had
 a different `target_sha3` (in which case it should have been removed by
 `cdm_diff_ht_purge()`.

 Since we've only had one report here, this probably isn't super-frequent.
 Maybe we should log more about this case if it occurs, so we can see where
 the error is happening.

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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  High  |  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor  |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal| Resolution:
 Keywords:  regression|  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by nickm):

 note: ahf and I are going to try to figure this out

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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  High  |  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor  |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal| Resolution:
 Keywords:  regression|  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+
Changes (by nickm):

 * priority:  Medium => High


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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  Medium|  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor  |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal| Resolution:
 Keywords:  regression|  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+
Changes (by nickm):

 * keywords:  regression, 035-must => regression


Comment:

 We should fix this if we can, but it cannot be "035-must" since we already
 shipped a stable release with the same problem.

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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  Medium|  Milestone:  Tor: 0.3.5.x-final
Component:  Core Tor/Tor  |Version:  Tor: 0.3.4.7-rc
 Severity:  Normal| Resolution:
 Keywords:  regression, 035-must  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+
Changes (by teor):

 * keywords:  regression, 034-must => regression, 035-must
 * milestone:  Tor: 0.3.4.x-final => Tor: 0.3.5.x-final


Comment:

 034 is stable, so it's too late for 034-must

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Re: [tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  Medium|  Milestone:  Tor: 0.3.4.x-final
Component:  Core Tor/Tor  |Version:  0.3.4.7-rc
 Severity:  Normal| Resolution:
 Keywords:  regression, 034-must  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+
Changes (by teor):

 * keywords:   => regression, 034-must
 * version:   => 0.3.4.7-rc
 * milestone:   => Tor: 0.3.4.x-final


Comment:

 This is probably due to our event-loop related changes in 0.3.4.

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[tor-bugs] #27331 [Core Tor/Tor]: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272

[Tor Bug Tracker & Wiki]

#27331: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed in
cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272
--+
 Reporter:  a_p   |  Owner:  (none)
 Type:  defect| Status:  new
 Priority:  Medium|  Milestone:
Component:  Core Tor/Tor  |Version:
 Severity:  Normal|   Keywords:
Actual Points:|  Parent ID:
   Points:|   Reviewer:
  Sponsor:|
--+
 tor in relay mode
 os: FreeBSD 11.2

 {{{
 Bug: Non-fatal assertion ent->cdm_diff_status != CDM_DIFF_PRESENT failed
 in cdm_diff_ht_check_and_note_pending at src/or/consdiffmgr.c:272. Stack
 trace: (on Tor 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x11ae5f8  at /usr/local/bin/tor (on Tor
 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x11c914a  at /usr/local/bin/tor (on
 Tor 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x114d019  at /usr/local/bin/tor (on
 Tor 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x801b4eda0  at
 /usr/local/lib/libevent-2.1.so.6 (on Tor 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x801b4af4e  at
 /usr/local/lib/libevent-2.1.so.6 (on Tor 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x1079ed4  at /usr/local/bin/tor (on Tor
 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x107ba7d  at /usr/local/bin/tor (on Tor
 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x1076d5c  at /usr/local/bin/tor (on Tor
 0.3.4.7-rc 8465a8d84647c349)
  Bug: 0x1076bf9  at /usr/local/bin/tor (on Tor 0.3.4.7-rc
 8465a8d84647c349)
  Bug: 0x1076af0 <_start+0x180> at /usr/local/bin/tor (on Tor
 0.3.4.7-rc 8465a8d84647c349)
 }}}

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