On Mon 19-08-24 12:33:17, Linus Torvalds wrote:

On Mon, 19 Aug 2024 at 12:23, Barry Song [off-list ref] wrote:

quoted

That could be an exploit taking advantage of those improper callers,

So?

FIX THE BUGGY CODE.

Don't make insane and incorrect changes to the MM code and spread
Fear, Uncertainty and Doubt.

quoted

thus it wouldn’t necessarily result in an immediate oops in callers but
result in an exploit

No. Any bug can be an exploit. Don't try to make this something
special by calling it an exploit.

NULL pointer dereferences are some of the *least* worrisome bugs,
because we don't allow people to mmap the NULL area anyway.

So just stop spreading FUD. We don't improve the kernel by making
excuses for bugs, we improve it by fixing things.

I really do not think that accusing Barry from spreading FUD is fair!
I believe there is a good intention behind this initiative and he has
used tools that he has available.

So rather than throwing FUD arguments I would really like to stick to a
technical discussion, please.
-- 
Michal Hocko
SUSE Labs