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Re: [tor-bugs] #25440 [Core Tor/Tor]: Broken openat syscall in Sandbox mode
#25440: Broken openat syscall in Sandbox mode
-------------------------------------------------+-------------------------
Reporter: ageisp0lis | Owner: nickm
Type: defect | Status:
| needs_information
Priority: Medium | Milestone: Tor:
| 0.3.3.x-final
Component: Core Tor/Tor | Version: Tor:
| 0.3.3.3-alpha
Severity: Normal | Resolution:
Keywords: sandbox, 033-must, regression, | Actual Points:
033-triage-20180326, 033-included-20180326 |
Parent ID: | Points:
Reviewer: | Sponsor:
-------------------------------------------------+-------------------------
Comment (by intrigeri):
I see a very similar startup failure on the development version of Tails
based on Debian 10 (Buster); to r is 0.3.2.10-1, libc6 is 2.27-2 (both
from Debian testing).
{{{
[notice] Tor 0.3.2.10 (git-0edaa32732ec8930) running on Linux with
Libevent 2.1.8-stable, OpenSSL 1.1.0h, Zlib 1.2.8, Liblzma 5.2.2, and
Libzstd 1.3.3.
[notice] Tor can't help you if you use it wrong! Learn how to be safe at
https://www.torproject.org/download/download#warning
[notice] Read configuration file "/usr/share/tor/tor-service-defaults-
torrc".
[notice] Read configuration file "/etc/tor/torrc".
[warn] Skipping obsolete configuration option 'ControlListenAddress'
[warn] Skipping obsolete configuration option 'TransListenAddress'
[warn] Skipping obsolete configuration option 'WarnUnsafeSocks'
lid
[notice] Tor 0.3.2.10 (git-0edaa32732ec8930) running on Linux with
Libevent 2.1.8-stable, OpenSSL 1.1.0h, Zlib 1.2.8, Liblzma 5.2.2, and
Libzstd 1.3.3.
[notice] Tor can't help you if you use it wrong! Learn how to be safe at
https://www.torproject.org/download/download#warning
[notice] Read configuration file "/usr/share/tor/tor-service-defaults-
torrc".
[notice] Read configuration file "/etc/tor/torrc".
[warn] Skipping obsolete configuration option 'ControlListenAddress'
[warn] Skipping obsolete configuration option 'TransListenAddress'
[warn] Skipping obsolete configuration option 'WarnUnsafeSocks'
[notice] Scheduler type KIST has been enabled.
[notice] Opening Socks listener on 127.0.0.1:9050
[notice] Opening Socks listener on 127.0.0.1:9062
[notice] Opening Socks listener on 127.0.0.1:9150
[notice] Opening DNS listener on 127.0.0.1:5353
[notice] Opening Transparent pf/netfilter listener on 127.0.0.1:9040
[notice] Opening Control listener on 127.0.0.1:9052
============================================================ T= 1522412451
(Sandbox) Caught a bad syscall attempt (syscall openat)
/usr/bin/tor(+0x1a2f3a)[0x5fe2178aff3a]
/lib/x86_64-linux-gnu/libpthread.so.0(open64+0x4b)[0x7b392350d3ab]
/usr/bin/tor(tor_open_cloexec+0x40)[0x5fe217896260]
/usr/bin/tor(start_writing_to_file+0x17a)[0x5fe2178a9a3a]
/usr/bin/tor(+0x19cb1b)[0x5fe2178a9b1b]
/usr/bin/tor(+0x19cc68)[0x5fe2178a9c68]
/usr/bin/tor(networkstatus_set_current_consensus+0xc99)[0x5fe21776c3e9]
/usr/bin/tor(connection_dir_reached_eof+0x14cb)[0x5fe217841ccb]
/usr/bin/tor(+0x10c9d9)[0x5fe2178199d9]
/usr/bin/tor(+0x52a1e)[0x5fe21775fa1e]
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6(+0x229ba)[0x7b39249ac9ba]
/usr/lib/x86_64-linux-
gnu/libevent-2.1.so.6(event_base_loop+0x5a7)[0x7b39249ad537]
/usr/bin/tor(do_main_loop+0x28d)[0x5fe21776096d]
/usr/bin/tor(tor_main+0xe1d)[0x5fe21776378d]
/usr/bin/tor(main+0x19)[0x5fe21775c1b9]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7b3922f5fa87]
/usr/bin/tor(_start+0x2a)[0x5fe21775c20a]
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25440#comment:9>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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