On Monday, August 29, 2016 03:41:23 PM Borislav Petkov wrote:

On Mon, Aug 29, 2016 at 09:15:00AM +0200, Pavel Machek wrote:

quoted

Sounds about as easy as hot unplugging arbitrary memory address. IOW
"not easy".

Regardless, forcibly panicking the system more is still the wrong
approach IMO.

Agreed.

Instead, I'd try to issue a big fat warning that BIOS corrupts E820 and
that the user should disable hibernation on that box and never ever
enable it again.

After that, the kernel should *disable* hibernation for the current boot
so any further hibernation runs don't even happen. Maybe even taint
itself.

Yes, taint the kernel when e820 mismatch is detected.

It may be a good idea to start an emergency shutdown in that case too, but
after getting to a point when it actually has a chance to work.

Thanks,
Rafael