[tor-bugs] #27838 [Core Tor/Tor]: v3 onion service wrongly considers Invalid signature for service descriptor signing key: expired
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Mon Sep 24 12:17:28 UTC 2018
#27838: v3 onion service wrongly considers Invalid signature for service descriptor
signing key: expired
------------------------------+--------------------------------
Reporter: s7r | Owner: (none)
Type: defect | Status: new
Priority: Medium | Milestone: Tor: 0.3.5.x-final
Component: Core Tor/Tor | Version: Tor: 0.3.5.1-alpha
Severity: Normal | Keywords: tor-hs
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
------------------------------+--------------------------------
I host on a server 2 onion services (one v2 and one v3).
Exact Tor version is: `Tor version 0.3.5.0-alpha-dev`
Suddenly, the v3 onion service went down. This was showing in the log
file:
{{{
Sep 23 14:04:00.000 [notice] Tor has successfully opened a circuit. Looks
like client functionality is working.
Sep 23 14:04:02.000 [warn] Invalid signature for service descriptor
signing key: expired
Sep 23 14:04:02.000 [warn] tor_bug_occurred_(): Bug:
../src/feature/hs/hs_descriptor.c:2661: hs_desc_encode_descriptor: Non-
fatal assertion !(ret < 0) failed. (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: Non-fatal assertion !(ret < 0) failed in
hs_desc_encode_descriptor at ../src/feature/hs/hs_descriptor.c:2661. Stack
trace: (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(log_backtrace_impl+0x47)
[0x55e9e1761257] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(tor_bug_occurred_+0xc0)
[0x55e9e175ca60] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug:
/usr/bin/tor(hs_desc_encode_descriptor+0x106) [0x55e9e1667996] (on Tor
0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug:
/usr/bin/tor(hs_service_run_scheduled_events+0x1ab9) [0x55e9e166ff49] (on
Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(+0x562e1)
[0x55e9e15cd2e1] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(+0x5dc11)
[0x55e9e15d4c11] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/lib/x86_64-linux-
gnu/libevent-2.0.so.5(event_base_loop+0x6a0) [0x7f246c99f5a0] (on Tor
0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(do_main_loop+0x265)
[0x55e9e15d11b5] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(tor_run_main+0x11f5)
[0x55e9e15d3a35] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(tor_main+0x3a)
[0x55e9e15cba0a] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(main+0x19)
[0x55e9e15cb589] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /lib/x86_64-linux-
gnu/libc.so.6(__libc_start_main+0xf1) [0x7f246b1fb2e1] (on Tor 0.3.5.0
-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(_start+0x2a)
[0x55e9e15cb5da] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] tor_bug_occurred_(): Bug:
../src/feature/hs/hs_service.c:2816: upload_descriptor_to_hsdir: Non-fatal
assertion !(service_encode_descriptor(service, desc, &desc->signing_kp,
&encoded_desc) < 0) failed. (on Tor $
Sep 23 14:04:02.000 [warn] Bug: Non-fatal assertion
!(service_encode_descriptor(service, desc, &desc->signing_kp,
&encoded_desc) < 0) failed in upload_descriptor_to_hsdir at
../src/feature/hs/hs_service.c:2816. Stack trace: (on Tor 0.3.$
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(log_backtrace_impl+0x47)
[0x55e9e1761257] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(tor_bug_occurred_+0xc0)
[0x55e9e175ca60] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug:
/usr/bin/tor(hs_service_run_scheduled_events+0x1d5b) [0x55e9e16701eb] (on
Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(+0x562e1)
[0x55e9e15cd2e1] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(+0x5dc11)
[0x55e9e15d4c11] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/lib/x86_64-linux-
gnu/libevent-2.0.so.5(event_base_loop+0x6a0) [0x7f246c99f5a0] (on Tor
0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(do_main_loop+0x265)
[0x55e9e15d11b5] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(tor_run_main+0x11f5)
[0x55e9e15d3a35] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(tor_main+0x3a)
[0x55e9e15cba0a] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(main+0x19)
[0x55e9e15cb589] (on Tor 0.3.5.0-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /lib/x86_64-linux-
gnu/libc.so.6(__libc_start_main+0xf1) [0x7f246b1fb2e1] (on Tor 0.3.5.0
-alpha-dev )
Sep 23 14:04:02.000 [warn] Bug: /usr/bin/tor(_start+0x2a)
[0x55e9e15cb5da] (on Tor 0.3.5.0-alpha-dev )
}}}
It reported that stack trace over and over for few hours, during the time
of some internet connectivity problems. The v3 hidden service was
unavailable during all this time of course.
Some additional info:
The internet was not working properly when this happened. The IPv4 bgp
session was down and only IPv6 was working on the server. I have checked
the Guard this particular Tor instance was using and it had an IPv6 ORPort
(maybe this lead to a false positive wrt to testing our own network
connection).
The bigger problem is that when everything came back online, the bug stack
trace was not printing in the log file any more, but the v3 onion service
did not recover by itself and still wasn't accessible. Had to restart the
Tor process entirely and it came back online.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27838>
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