Emulate execution only


vsyscall table for legacy applications
└─>Emulate execution only
In linux kernel since version 5.1 (release Date: 2019-05-05)  
The kernel traps and emulates calls into the fixed vsyscall
address mapping and does not allow reads. This
configuration is recommended when userspace might use the
legacy vsyscall area but support for legacy binary
instrumentation of legacy code is not needed. It mitigates
certain uses of the vsyscall area as an ASLR-bypassing