Tor crash : bad syscall attempt (syscall prlimit64)
SandBox 1
ControlSocket /var/run/tor/control
As soon I attach arm on the control socket , tor dies :
```
[Time...] [notice] Tor 0.2.7.0-alpha-dev (git-189f357f9790c30e) opening log file.
...
[Time...] [notice] New control connection opened.
============================================================ T= 1426029732
(Sandbox) Caught a bad syscall attempt (syscall prlimit64)
/usr/sbin/tor(+0x15aaec)[0xb762faec]
linux-gate.so.1(__kernel_vsyscall+0x10)[0xb74b3bbc]
linux-gate.so.1(__kernel_vsyscall+0x10)[0xb74b3bbc]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(getrlimit64+0x2b)[0xb70a5bbb]
/usr/sbin/tor(set_max_file_descriptors+0x3a)[0xb7614d6a]
/usr/sbin/tor(+0xf9861)[0xb75ce861]
/usr/sbin/tor(connection_control_process_inbuf+0x260c)[0xb75d654c]
/usr/sbin/tor(+0xdd86d)[0xb75b286d]
/usr/sbin/tor(+0xe8d6f)[0xb75bdd6f]
/usr/sbin/tor(+0x2ac69)[0xb74ffc69]
/usr/lib/i386-linux-gnu/libevent-2.0.so.5(event_base_loop+0x73d)[0xb73df36d]
/usr/sbin/tor(do_main_loop+0x24d)[0xb750183d]
/usr/sbin/tor(tor_main+0x14e5)[0xb75046b5]
/usr/sbin/tor(main+0x35)[0xb74fd955]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(__libc_start_main+0xf3)[0xb6fdea63]
/usr/sbin/tor(+0x289a4)[0xb74fd9a4]
```
issue