Warning: Permanently added '[localhost]:7298' (RSA) to the list of known hosts. bash-4.3$ kernel warning at kern/src/event.c:374, from core 0: [kernel] Null ev_q - kernel code should check before sending! Stack Backtrace on Core 0: #01 [<0xffffffffc200a33c>] in backtrace #02 [<0xffffffffc2009bd4>] in _warn #03 [<0xffffffffc2007752>] in send_event #04 [<0xffffffffc20560d5>] in sys_send_event #05 [<0xffffffffc2059569>] in syscall #06 [<0xffffffffc2059734>] in run_local_syscall #07 [<0xffffffffc2059c69>] in prep_syscalls #08 [<0xffffffffc20ab5fa>] in sysenter_callwrapper