On 11/27/18 at 04:39pm, Kees Cook wrote:
> >> >> diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
> >> >> index 4c8acdfdc5a7..6161d77c5bfb 100644
> >> >> --- a/arch/x86/kernel/machine_kexec_64.c
> >> >> +++ b/arch/x86/kernel/machine_kexec_64.c
> >> >> @@ -356,6 +356,9 @@ void arch_crash_save_vmcoreinfo(void)
> >> >> VMCOREINFO_SYMBOL(init_top_pgt);
> >> >> vmcoreinfo_append_str("NUMBER(pgtable_l5_enabled)=%d\n",
> >> >> pgtable_l5_enabled());
> >> >> +#ifdef CONFIG_RANDOMIZE_BASE
>
> Okay, gotcha. In that case, shouldn't this be CONFIG_RANDOMIZE_MEMORY?
And yes, if we only care about KASLR, it should be
CONFIG_RANDOMIZE_MEMORY, but not CONFIG_RANDOMIZE_BASE.
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