Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Fri, Mar 6, 2015 at 8:47 AM, Luis R. Rodriguez wrote: > If I had a technical solution to this problem I'd propose it but I don't, > I'm just flagging it right now and hope we can come up with one. Shortly I'll be posting part of a proactive solution I believe we could

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Fri, Mar 06, 2015 at 11:02:50AM -0500, Konrad Rzeszutek Wilk wrote: On Wed, Mar 04, 2015 at 05:47:03PM -0800, Luis R. Rodriguez wrote: On Wed, Mar 4, 2015 at 6:36 AM, Andrey Ryabinin a.ryabi...@samsung.com wrote: On 03/03/2015 07:02 PM, Konrad Rzeszutek Wilk wrote: If it is like

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Wed, Mar 04, 2015 at 05:47:03PM -0800, Luis R. Rodriguez wrote: On Wed, Mar 4, 2015 at 6:36 AM, Andrey Ryabinin a.ryabi...@samsung.com wrote: On 03/03/2015 07:02 PM, Konrad Rzeszutek Wilk wrote: If it is like that - then just using what had to be implemented for the stack protection as

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On 03/03/2015 07:02 PM, Konrad Rzeszutek Wilk wrote: On Tue, Mar 03, 2015 at 06:38:20PM +0300, Andrey Ryabinin wrote: 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,

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On 03/03/2015 08:20 PM, Luis R. Rodriguez wrote: On Tue, Mar 3, 2015 at 2:06 AM, David Vrabel david.vra...@citrix.com wrote: On 03/03/15 09:40, Luis R. Rodriguez wrote: Andrey, I believe that on Xen we should disable kasan, would like confirmation Why? This is the first of heard of this.

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Wed, Mar 4, 2015 at 6:36 AM, Andrey Ryabinin a.ryabi...@samsung.com wrote: On 03/03/2015 07:02 PM, Konrad Rzeszutek Wilk wrote: If it is like that - then just using what had to be implemented for the stack protection as a template ought to pave most of the work? Probably. I think I could

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On 03/03/15 09:40, Luis R. Rodriguez wrote: Andrey, I believe that on Xen we should disable kasan, would like confirmation Why? This is the first of heard of this. from someone on xen-devel though. Here's the thing though -- if true -- I'd like to do it *properly*, where *properly* means

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Tue, Mar 03, 2015 at 06:38:20PM +0300, Andrey Ryabinin wrote: 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,

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Tue, Mar 3, 2015 at 2:06 AM, David Vrabel david.vra...@citrix.com wrote: On 03/03/15 09:40, Luis R. Rodriguez wrote: Andrey, I believe that on Xen we should disable kasan, would like confirmation Why? This is the first of heard of this. Andrey chimed in here confirming this. from

Re: [Xen-devel] kasan_map_early_shadow() on Xen

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

Re: [Xen-devel] kasan_map_early_shadow() on Xen

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

Re: [Xen-devel] kasan_map_early_shadow() on Xen

On 03.03.15 at 10:40, mcg...@suse.com wrote: Let's go down the rabbit hole for a bit. HAVE_ARCH_KASAN will be selected on x86 when: if X86_64 SPARSEMEM_VMEMMAP Now Xen should not have SPARSEMEM_VMEMMAP Why would that be? Jan ___