Re: [PATCH 07/13] kexec: Implementation of new syscall kexec_file_load

Borislav Petkov
2014-06-13T07:50:16Z

On Mon, Jun 09, 2014 at 11:41:37AM -0400, Vivek Goyal wrote:
> IIUC, COMMAND_LINE_SIZE gives max limits of running kernel and it does
> not tell us anything about command line size supported by kernel being
> loaded.

Whatever you do, you do need a sane default because even querying the
boot protocol is not reliable as the to-be-loaded kernel's boot protocol
might be manipulated too, before signing (who knows what people do
in the wild).

So having a sane, unconditional fallback COMMAND_LINE_SIZE from the
first kernel is a must, methinks.

--
Regards/Gruss,
Boris.

Sent from a fat crate under my desk. Formatting is fine.
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