Re: [PATCH] mm/slub: Add slub_debug option to panic on memory corruption

Kees Cook
2021-03-18T17:08:49Z

On Thu, Mar 18, 2021 at 01:56:05PM +0100, Vlastimil Babka wrote:
> I was going to suggest adding a panic_on_taint parameter... but turns out it was
> already added last year! And various memory corruption detections already use
> TAINT_BAD_PAGE, including SLUB.
> If anything's missing an add_taint() it can be added, and with the parameter you
> should get what you want.

Ah-ha! That works too. I hadn't seen that -- I wonder if I can wire some
other hardening things up to that. (e.g. refactor BUG_ON_CORRUPTION
finally.)

--
Kees Cook