Commit 7567cae1 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity

KVM: take srcu lock before call to complete_pio()

complete_pio() may use slot table which is protected by srcu.
Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 01bf0b64
...@@ -4483,7 +4483,9 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) ...@@ -4483,7 +4483,9 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
kvm_set_cr8(vcpu, kvm_run->cr8); kvm_set_cr8(vcpu, kvm_run->cr8);
if (vcpu->arch.pio.cur_count) { if (vcpu->arch.pio.cur_count) {
vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
r = complete_pio(vcpu); r = complete_pio(vcpu);
srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
if (r) if (r)
goto out; goto out;
} }
......
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