Opened 4 years ago

Closed 4 years ago

#21362 closed defect (duplicate)

Intermittent crash when selected guard lacks a descriptor or routerstatus

Reported by: teor Owned by:
Priority: Medium Milestone: Tor: 0.3.0.x-final
Component: Core Tor/Tor Version: Tor:
Severity: Major Keywords: crash guard tor-relay
Cc: Actual Points:
Parent ID: Points: 1
Reviewer: Sponsor:


I see this crash when running make test-network-all with the latest master:

Feb 01 16:53:22.000 [info] choose_good_exit_server_general(): Chose exit server '$65B77ACB2E202F610D3D7D12CA7BA1269C945DEB~test002r at'
Feb 01 16:53:22.000 [debug] extend_info_from_node(): using for test002r
Feb 01 16:53:22.000 [info] extend_info_from_node(): Including Ed25519 ID for $65B77ACB2E202F610D3D7D12CA7BA1269C945DEB~test002r at
Feb 01 16:53:22.000 [debug] onion_extend_cpath(): Path is 0 long; we want 3
Feb 01 16:53:22.000 [info] select_entry_guard_for_circuit(): Selected primary guard test000a ($02C177E1A8001A62F9476B8BCFC80B6A7F45AFB8) for circuit.
Feb 01 16:53:22.000 [err] tor_assertion_failed_(): Bug: src/or/circuitbuild.c:2372: onion_extend_cpath: Assertion info || client failed; aborting. (on Tor 6dd7e66019e9aa53)
Feb 01 16:53:22.000 [err] Bug: Assertion info || client failed in onion_extend_cpath at src/or/circuitbuild.c:2372. Stack trace: (on Tor 6dd7e66019e9aa53)
Feb 01 16:53:22.000 [err] Bug:     0   tor                                 0x000000010872ad34 log_backtrace + 68 (on Tor 6dd7e66019e9aa53)

It appears that this check in extend_info_from_node is failing:

  if (node->ri == NULL && (node->rs == NULL || node->md == NULL))
    return NULL;

We really shouldn't be selecting a guard unless it passes this test.

Child Tickets

Change History (1)

comment:1 Changed 4 years ago by asn

Resolution: duplicate
Status: newclosed

Thanks for bug report. This look to be the same as #21242. Closing this one.

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