Re: [PATCH 1/8] kasan,x86: Frob kasan_report() in an exception

[Peter Zijlstra]

On Wed, Mar 06, 2019 at 03:01:33PM +0100, Dmitry Vyukov wrote:
> On Wed, Mar 6, 2019 at 2:57 PM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> > I've not found callers of __asan_report_load* with AC=1 in the kernel
> > yet. Under what condtions does GCC emit calls to these functions?
> 
> CONFIG_KASAN_INLINE=y
> Then compiler inlines fast path into generated code and only calls
> into runtime to report errors (also, faster, this should be a default
> for anything other than tiny ROM controllers).

*sigh*, clearly I've not build enough kernels yet... Lemme go try that.