RE: Re: [PATCH 1/1] kasan: Support for r/w instrumentation control

[Vaneet Narang]

ÂHi,

> Do you actually hit an issue with image size? In what context?
> Do you use inline/outline instrumentation? Does switching to the other
> option help?

Memory access with KASAN enabled Image has overhead in terms of cpu execution.
Sometimes we are not able to reproduce race condition issues with these overhead in
place. So user should have control atleast over read instrumentation.

> Does it make sense to ever disable writes? I assume that you are

Write instrumentation control is majorly kept to be inline with ASAN for user space 
applications. 
Also write is sometimes useful when uImage is already sanitized and some corruption
is done by kernel modules by doing some direct memory access then both read / write sanity of uImage 
can be avoided.

> disabling reads, right?
> Disabling both certainly does not make sense.

Regards,
Vaneet Narang