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[tor-bugs] #23429 [Core Tor/Tor]: hs: assert on rend_data when pruning the v2 service list
#23429: hs: assert on rend_data when pruning the v2 service list
------------------------------+--------------------------------
Reporter: dgoulet | Owner: dgoulet
Type: defect | Status: assigned
Priority: Very High | Milestone: Tor: 0.3.2.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Keywords: tor-hs, prop224
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
------------------------------+--------------------------------
Reported by ahf:
{{{
Sep 07 18:02:40.000 [err] tor_assertion_failed_(): Bug:
src/or/rendservice.c:561: rend_service_prune_list_impl_: Assertion
ocirc->rend_data failed; aborting. (on Tor 0.3.2.0-alpha-dev
acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: Assertion ocirc->rend_data failed in
rend_service_prune_list_impl_ at src/or/rendservice.c:561. Stack trace:
(on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(log_backtrace+0x42)
[0x7fa7d0ad0f52] (on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(tor_assertion_failed_+0x94)
[0x7fa7d0aeb594] (on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug:
./bin/tor(rend_service_prune_list+0x32f) [0x7fa7d09da46f] (on Tor 0.3.2.0
-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(hs_config_service_all+0x87c)
[0x7fa7d0ab583c] (on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(set_options+0x16ca)
[0x7fa7d0a4b98a] (on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug:
./bin/tor(options_init_from_string+0x3e0) [0x7fa7d0a4cb40] (on Tor 0.3.2.0
-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug:
./bin/tor(options_init_from_torrc+0x1e2) [0x7fa7d0a4cde2] (on Tor 0.3.2.0
-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(+0x51c79) [0x7fa7d09a9c79]
(on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: /usr/lib/x86_64-linux-
gnu/libevent-2.0.so.5(event_base_loop+0xa7b) [0x7fa7cffde24b] (on Tor
0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(do_main_loop+0x24d)
[0x7fa7d09a841d] (on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(tor_main+0x1c25)
[0x7fa7d09abbb5] (on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(main+0x19) [0x7fa7d09a3d59]
(on Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: /lib/x86_64-linux-
gnu/libc.so.6(__libc_start_main+0xf5) [0x7fa7cf3cff45] (on Tor 0.3.2.0
-alpha-dev acfdc4afc126ba23)
Sep 07 18:02:40.000 [err] Bug: ./bin/tor(+0x4bdab) [0x7fa7d09a3dab] (on
Tor 0.3.2.0-alpha-dev acfdc4afc126ba23)
}}}
The reason is because we iterate over intro circuit in the pruning process
so we can remove any intro circuit for a service that has been removed.
However, by doing so we were asserting on `rend_data` but now we have
`hs_ident` for v3 services.
Another occurrence of this can be found in `rend_service_del_ephemeral()`
which also iterates over all circuits...
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23429>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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