On Tue, Dec 14, 2021 at 05:20:07PM +0100, Alexander Potapenko wrote: > KernelMemorySanitizer (KMSAN) is a detector of errors related to uses of > uninitialized memory. It relies on compile-time Clang instrumentation > (similar to MSan in the userspace [1]) and tracks the state of every bit > of kernel memory, being able to report an error if uninitialized value is > used in a condition, dereferenced, or escapes to userspace, USB or DMA. Why is USB unique here? What about serial data? i2c? spi? w1? We have a lot of different I/O bus types :) And how is DMA checked given that the kernel shouldn't be seeing dma memory? thanks, greg k-h
