Re: [PATCH V2] mips: kernel: fix detect_memory_region() function

[Thomas Bogendoerfer]

On Tue, Jun 25, 2024 at 09:44:44AM +0800, Shiji Yang wrote:
> The detect_memory_region() has been broken on 6.6 kernel[1]. This
> patch fixes it by:
> 1. Do not use memcmp() on unallocated memory, as the new introduced
>    fortify dynamic object size check[2] will return unexpected result.

hmm, so there should a new way for doing memory probing without
triggering this fortify check. How do other platforms deal with this ?

> 2. Use a fixed pattern instead of a random function pointer as the
>    magic value.

why is this better ?

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]