The two patches here fixes race conditions in the KVM hypervisor code dealing with the shadow MMU. The first one applies to core KVM code where mmu_notifier->ops.release() could be called twice with one instance possibily accessing a free'd KVM instance. Reported here : http://lkml.kernel.org/r/CAAeHK+x8udHKq9xa1zkTO6ax5E8Dk32HYWfaT05FMchL2cr48g@xxxxxxxxxxxxxx The second patch is specific to arm/arm64 stage2 PGD, where there are issues with modifications to the PGD pointer outside the mmu_lock, leading to crashes. Reported here : http://lkml.kernel.org/r/febea966-3767-21ff-3c40-1a76d1399138@xxxxxxx Suzuki K Poulose (2): kvm: Fix mmu_notifier release race kvm: arm/arm64: Fix race in resetting stage2 PGD arch/arm/kvm/mmu.c | 14 +++++++----- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 59 ++++++++++++++++++++++++++++++++++++++++++------ 3 files changed, 61 insertions(+), 13 deletions(-) -- 2.7.4
