On Tue, Dec 10, 2013 at 10:54:00AM -0800, H. Peter Anvin wrote: > On 12/10/2013 10:33 AM, Vivek Goyal wrote: > > On Tue, Dec 10, 2013 at 08:32:38AM -0800, H. Peter Anvin wrote: > >> Of course it isn't. > > > > I am not sure what are you trying to say. This is too brief. > > > > Thanks > > Vivek > > > > Of course it is not sufficient. Once you can get arbitrary code into > kernel space (CPL 0) you can do anything, and "disabling jump back" is > just a speed bump. Agreed that disabling jump back is only a speed bump. Kees, so how would be use this knob? - If I put it in some init script, then root will permission to modify and remove it. - Can one specify sysctl parameters on command line? If yes, then one can disable this using kernel command line and in that case kdump will be disabled too. Thanks Vivek
