On Wed, Mar 06, 2019 at 03:12:37PM +0100, Peter Zijlstra wrote: > On Wed, Mar 06, 2019 at 03:01:33PM +0100, Dmitry Vyukov wrote: > > On Wed, Mar 6, 2019 at 2:57 PM Peter Zijlstra <[email protected]> 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.
mm/kasan/generic_report.o: warning: objtool: __asan_report_load1_noabort()+0x0: call to __fentry__() with UACCESS enabled You want to do: CFLAGS_REMOVE_generic_report.o = -pg like generic.o has?
