On Wed, Jul 25, 2018 at 03:11:10PM -0400, Jason Andryuk wrote: > xen/PVH: Set up GS segment for stack canary > > commit 98014068328c5574de9a4a30b604111fd9d8f901 upstream > > A 32bit PVH Xen kernel with CONFIG_CC_STACKPROTECTOR_STRONG fails to > boot. Xen detects a triple fault and kills the domain. The IP was > xen_prepare_pvh+9 corresponding to: > mov %gs:0x14,%eax > > The 32bit kernel hasn't setup %gs when calling into xen_prepare_pvh. > Curiously, 64bit was not affected. The requested patch sets up the > canary for PVH to boot successfully. > > This is applicable to and has been tested on 4.14. It is also > applicable to 4.17. Thanks, now queued up. greg k-h
