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Re: [tor-bugs] #17752 [Tor]: Null pointer deref in connection_ap_attach_pending()
#17752: Null pointer deref in connection_ap_attach_pending()
-------------------------------------+------------------------------------
Reporter: dgoulet | Owner:
Type: defect | Status: needs_revision
Priority: Very High | Milestone: Tor: 0.2.8.x-final
Component: Tor | Version: Tor: unspecified
Severity: Major | Resolution:
Keywords: crash TorCoreTeam201512 | Actual Points:
Parent ID: | Points:
Sponsor: |
-------------------------------------+------------------------------------
Changes (by dgoulet):
* status: needs_information => needs_revision
Comment:
New stack trace. I can reproduce that reliably every time I disconnect
from my VPN and try to connect to an HS after that:
{{{
Dec 17 16:13:58.000 [notice] Our IP address has changed. Rotating keys...
Dec 17 16:13:58.000 [notice] Tor now sees network activity. Restoring
circuit build timeout recording. Network was down for 184 seconds during
131 circuit attempts.
Dec 17 16:14:05.000 [err] tor_assertion_failed_(): Bug:
src/or/connection_edge.c:806: connection_ap_attach_pending: Assertion conn
&& entry_conn failed; aborting. (on Tor 0.2.8.0-alpha-dev
b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: Assertion conn && entry_conn failed in
connection_ap_attach_pending at src/or/connection_edge.c:806. Stack trace:
(on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/local/bin/tor(log_backtrace+0x42)
[0x564effb77d42] (on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug:
/usr/local/bin/tor(tor_assertion_failed_+0x8d) [0x564effb85fcd] (on Tor
0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug:
/usr/local/bin/tor(connection_ap_attach_pending+0x109) [0x564effb2eb19]
(on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug:
/usr/local/bin/tor(circuit_build_needed_circs+0x38) [0x564effb0e4d8] (on
Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/local/bin/tor(+0x3c118)
[0x564effa84118] (on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/lib/x86_64-linux-
gnu/libevent-2.0.so.5(event_base_loop+0x7fc) [0x7f1bde6dea0c] (on Tor
0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/local/bin/tor(do_main_loop+0x20d)
[0x564effa84b5d] (on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/local/bin/tor(tor_main+0x19ad)
[0x564effa880cd] (on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/local/bin/tor(main+0x19)
[0x564effa80949] (on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /lib/x86_64-linux-
gnu/libc.so.6(__libc_start_main+0xf0) [0x7f1bdda5da00] (on Tor 0.2.8.0
-alpha-dev b9714e1366a19dff)
Dec 17 16:14:05.000 [err] Bug: /usr/local/bin/tor(_start+0x29)
[0x564effa80999] (on Tor 0.2.8.0-alpha-dev b9714e1366a19dff)
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17752#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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