Re: [Xen-devel] Ability to crash a HVM guest by accessing /dev/hpet

2018-02-21 Thread Stefan Bader
On 21.02.2018 15:40, Roger Pau Monné wrote: > On Wed, Feb 21, 2018 at 03:12:15PM +0100, Stefan Bader wrote: >> This seems to have been found by us[1] and Citrix[2] recently. To trigger >> this >> one needs to be root in the guest, so it is not super critical but still it >> seems to be a bit

Re: [Xen-devel] Ability to crash a HVM guest by accessing /dev/hpet

2018-02-21 Thread Roger Pau Monné
On Wed, Feb 21, 2018 at 03:12:15PM +0100, Stefan Bader wrote: > This seems to have been found by us[1] and Citrix[2] recently. To trigger this > one needs to be root in the guest, so it is not super critical but still it > seems to be a bit harsh that purely opening /dev/hpet read-only is leading