On 03/03/2015 05:16 PM, Konrad Rzeszutek Wilk wrote: > On Tue, Mar 03, 2015 at 04:15:06PM +0300, Andrey Ryabinin wrote: >> On 03/03/2015 12:40 PM, Luis R. Rodriguez wrote: >>> Andrey, >>> >>> I believe that on Xen we should disable kasan, would like confirmation >> >> I guess Xen guests won't work with kasan because Xen guests doesn't setup >> shadow >> (kasan_map_early_shadow() is not called in xen guests). >> >> Disabling kasan for Xen in Kconfig is undesirable because that will disable >> kasan >> for allmodconfig and allyesconfig builds, but I don't see other option for >> now. > > Was there an bug reported for this? It would be good to CC the maintainers > of Xen on that sort of thing. >
There was no report for this. I just looked at Xen code because of this Luis's mail and I don't see how it could work with kasan. Fixing this might be not trivial. We need to setup shadow memory before any kasan instrumented function will run. This is like with -fstack-protector (you need to setup gdt before calling any stack protected function). _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
