On 01/19/2017 08:53 AM, Pavel Machek wrote:
On Wed 2017-01-18 17:29:05, Laura Abbott wrote:
Despite the word 'debug' in CONFIG_DEBUG_RODATA, this kernel option
provides key security features that are to be expected on a modern
system. Change the name to CONFIG_HARDENED_PAGE_MAPPINGS which more
accurately describes what this option is intended to do.
I think this is bad change. CONFIG_DEBUG_RODATA is describing what it
does, CONFIG_HARDENED_PAGE_MAPPINGS is advertising.
We don't do advertising, and we don't force people to re-answer the
config questions without good reason.
CONFIG_HARDENED_RODATA might fix the first problem, but not the second
one.
Pavel
(Apologies, my SMTP was set up incorrectly so my response didn't
actually get sent out)
CONFIG_DEBUG_RODATA isn't describing what it does though. It misses
that this config may handle much more than just rodata. I think
Mark Rutland's suggestion of STRICT_KERNEL_RWX might be more
descriptive.
Thanks,
Laura
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