16 May
2024
16 May
'24
6:47 p.m.
On Thu, 16 May 2024 at 20:45, Kees Cook keescook@chromium.org wrote:
On Thu, May 16, 2024 at 05:29:11PM +0000, Chaney, Ben wrote:
+static efi_status_t parse_options(const char *cmdline) +{
- static const char opts[][14] = {
- "mem=", "memmap=", "efi_fake_mem=", "hugepages="
- };
I think we probably want to include both crashkernel and pstore as arguments that can disable this randomization.
The carve-outs that pstore uses should already appear in the physical memory mapping that EFI has. (i.e. those things get listed in e820 as non-RAM, etc)
I don't know anything about crashkernel, but if we really do have a lot of these, we likely need to find a way to express them to EFI...
Perhaps. But the fact that the current KASLR code ignores it entirely suggests that this has not been a problem up to this point.