Following the suggestion to make a ticket at https://stackoverflow.com/questions/46634215/torsocks-and-unsupported-syscalls, which is about a non related issue: The below warning is with torsocks 2.3.0: WARNING torsocks[6254]: [syscall] Unsupported syscall number 39. Denying the call (in tsocks_syscall() at syscall.c:605) **Trac**: **Username**: tu8367