[$] Arithmetic overflow mitigation in the kernel

On May 7, Kees Cook senta proposal to the linux-kernel mailing list, asking for the kerneldevelopers to startworking on a way to mitigate unintentional arithmetic overflow, which has been asource of many bugs. This is not the first time Cook has made a request alongthese lines; he sent a related patch set inJanuary 2024.Several core developers objected to the plan for differentreasons. After receiving their feedback,Cook modified his approach to tackle the problemin a series of smaller steps.