Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8

2021-10-26 Thread Michael Ellerman
John Paul Adrian Glaubitz writes: > Hi Michael! Hi Adrian, Thanks for testing ... >> The Linux kernel for powerpc since v5.2 has a bug which allows a >> malicious KVM guest to crash the host, when the host is running on >> Power8. >> >> Only machines using Linux as the hypervisor, aka. KVM, po

Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8

2021-10-26 Thread Nicholas Piggin
Excerpts from John Paul Adrian Glaubitz's message of October 26, 2021 6:48 pm: > Hi Michael! > >> The Linux kernel for powerpc since v5.2 has a bug which allows a >> malicious KVM guest to crash the host, when the host is running on >> Power8. >> >> Only machines using Linux as the hypervisor, ak

Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8

2021-10-26 Thread John Paul Adrian Glaubitz
Hi Michael! > The Linux kernel for powerpc since v5.2 has a bug which allows a > malicious KVM guest to crash the host, when the host is running on > Power8. > > Only machines using Linux as the hypervisor, aka. KVM, powernv or bare > metal, are affected by the bug. Machines running PowerVM are n