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

2015-03-03 Thread Andrey Ryabinin
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

2015-03-03 Thread Andrey Ryabinin
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

Re: [Xen-devel] [PATCH] x86 spinlock: Fix memory corruption on completing completions

2015-02-06 Thread Andrey Ryabinin
On 02/06/2015 07:15 PM, Linus Torvalds wrote: On Fri, Feb 6, 2015 at 7:20 AM, Sasha Levin sasha.le...@oracle.com wrote: Can we modify it slightly to avoid potentially accessing invalid memory: So I think there's a race with that. And I'll warn you: the kernel does do speculative reads of