On Wed, Feb 17, 2016 at 11:31:41AM +0100, Borislav Petkov wrote: > On Wed, Feb 17, 2016 at 10:35:12AM +0100, Ingo Molnar wrote: > > So it probably triggers on vanilla v4.4 (or v4.5-rc4) as well, with no > > recent FPU bits applied? > > Nope, 4.4 doesn't trigger. Lemme try some of those other commits...
Results: tip/x86/fpu: 58122bf1d856 x86/fpu: Default eagerfpu=on on all CPUs - BAD c6ab109f7e0e x86/fpu: Speed up lazy FPU restores slightly - BAD a20d7297045f x86/fpu: Fold fpu_copy() into fpu__copy() - BAD 5ed73f40735c x86/fpu: Fix FNSAVE usage in eagerfpu mode - BAD 4ecd16ec7059 x86/fpu: Fix math emulation in eager fpu mode - BAD 765bdb406de4 ("Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm") - BAD ... v4.4: GOOD so it must be something else causing it AFAICT. I'll continue trying the -rc's and the tip/master merges to see what causes it. Let me know if you have a better idea. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.