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Hi,

With the following torrc I experience the subsequent trace:

Sandbox 1
DataDirectory /tmp/tmp2z5k8mqz
SocksPort 32609
ControlSocket /tmp/tmp2z5k8mqz/control_socket
CookieAuthentication 1
CookieAuthFile /tmp/tmp2z5k8mqz/cookie
AvoidDiskWrites 1
Log notice stdout
GeoIPFile /usr/share/tor/geoip
GeoIPv6File /usr/share/tor/geoip6

[user@host tmp2z5k8mqz]$ tor -f torrc 
Dec 29 10:24:05.125 [notice] Tor 0.3.1.9 (git-727d3f1b5e6eeda7) running on Linux with Libevent 2.0.22-stable, OpenSSL 1.1.0g-fips, Zlib 1.2.11, Liblzma N/A, and Libzstd N/A.
Dec 29 10:24:05.125 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
Dec 29 10:24:05.125 [notice] Read configuration file "/tmp/tmp2z5k8mqz/torrc".
Dec 29 10:24:05.128 [notice] Opening Socks listener on 127.0.0.1:32609
Dec 29 10:24:05.128 [notice] Opening Control listener on /tmp/tmp2z5k8mqz/control_socket
Dec 29 10:24:05.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Dec 29 10:24:05.000 [notice] Parsing GEOIP IPv6 file /usr/share/tor/geoip6.
Dec 29 10:24:05.000 [notice] Bootstrapped 0%: Starting
Dec 29 10:24:06.000 [notice] Starting with guard context "default"
Dec 29 10:24:06.000 [notice] Bootstrapped 5%: Connecting to directory server

============================================================ T= 1514503447
(Sandbox) Caught a bad syscall attempt (syscall socket)
tor(+0x1853fa)[0x56068ff303fa]
/lib64/libc.so.6(socket+0x7)[0x7893d9664fb7]
/lib64/libc.so.6(socket+0x7)[0x7893d9664fb7]
/lib64/libc.so.6(+0x12e3fa)[0x7893d96813fa]
/lib64/libc.so.6(+0x12e4f1)[0x7893d96814f1]
/lib64/libc.so.6(getifaddrs+0x10)[0x7893d9682230]
tor(get_interface_addresses_raw+0x3c)[0x56068ff13eec]
tor(get_interface_address6_list+0x30)[0x56068ff14620]
tor(get_interface_address6+0x45)[0x56068ff14875]
tor(+0x109378)[0x56068feb4378]
tor(connection_handle_write+0x2e)[0x56068feb44ae]
tor(+0x4d5ce)[0x56068fdf85ce]
/lib64/libevent-2.0.so.5(event_base_loop+0x7a9)[0x7893da6943f9]
tor(do_main_loop+0x29d)[0x56068fdf978d]
tor(tor_main+0xe25)[0x56068fdfc5a5]
tor(main+0x19)[0x56068fdf5009]
/lib64/libc.so.6(__libc_start_main+0xea)[0x7893d957388a]
tor(_start+0x2a)[0x56068fdf505a]

It of course works with Sandbox 0.

Is there something in my config that is incompatible with the Sandbox mode?

Maybe related to 16579 except syslog is not the issue here.

Thanks!

Trac:
Username: mig5