Re: [PATCH v2] KVM: arm64: Fix circular locking dependency

On Wed, 24 Jan 2024 09:10:28 +0000, Sebastian Ene wrote:

The rule inside kvm enforces that the vcpu->mutex is taken *inside* kvm->lock. The rule is violated by the pkvm_create_hyp_vm() which acquires the kvm->lock while already holding the vcpu->mutex lock from kvm_vcpu_ioctl(). Avoid the circular locking dependency altogether by protecting the hyp vm handle with the config_lock, much like we already do for other forms of VM-scoped data.

Applied to fixes, thanks!

[1/1] KVM: arm64: Fix circular locking dependency commit: 10c02aad111df02088d1a81792a709f6a7eca6cc

Cheers,

M.