Please add oops_limit to -stable

Hi,

I'd like to ask that the oops_limit series get included in -stable releases. It's a recommended defense developed while writing this report:
https://googleprojectzero.blogspot.com/2023/01/exploiting-null-dereferences-in-linux.html

I've had a few people ask about having it in -stable, for example:
https://lore.kernel.org/lkml/[email protected]

This is the series:

9360d035a579 panic: Separate sysctl logic from CONFIG_SMP d4ccd54d28d3 exit: Put an upper limit on how often we can oops 9db89b411170 exit: Expose "oops_count" to sysfs de92f65719cd exit: Allow oops_limit to be disabled 79cc1ba7badf panic: Consolidate open-coded panic_on_warn checks 9fc9e278a5c0 panic: Introduce warn_limit
8b05aa263361 panic: Expose "warn_count" to sysfs 00dd027f721e docs: Fix path paste-o for /sys/kernel/warn_count 7535b832c639 exit: Use READ_ONCE() for all oops/warn limit reads

For v6.1.x they apply cleanly and behave as expected.

I'm hoping someone can step up and do backports for v5.15.x and earlier, as there appear to be a number of conflicts and I'm swamped with other stuff to do. :P

Thanks!

-Kees

Kees Cook

All now queued up.

If any distro/release cares about 5.15.y and earlier, I will be glad to take backports.

thanks,

greg k-h