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authorPaolo Bonzini <pbonzini@redhat.com>2019-04-11 12:16:47 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2019-04-16 16:38:07 +0300
commit1d487e9bf8ba66a7174c56a0029c54b1eca8f99c (patch)
tree4916036d4dc25e9a52ba59105621ee42682ce844 /virt/kvm
parentbe43c440eb5d0ccfdb0d67d5a4c9d579ff988b75 (diff)
downloadlinux-1d487e9bf8ba66a7174c56a0029c54b1eca8f99c.tar.xz
KVM: fix spectrev1 gadgets
These were found with smatch, and then generalized when applicable. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
-rw-r--r--virt/kvm/irqchip.c5
-rw-r--r--virt/kvm/kvm_main.c6
2 files changed, 7 insertions, 4 deletions
diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
index 3547b0d8c91e..79e59e4fa3dc 100644
--- a/virt/kvm/irqchip.c
+++ b/virt/kvm/irqchip.c
@@ -144,18 +144,19 @@ static int setup_routing_entry(struct kvm *kvm,
{
struct kvm_kernel_irq_routing_entry *ei;
int r;
+ u32 gsi = array_index_nospec(ue->gsi, KVM_MAX_IRQ_ROUTES);
/*
* Do not allow GSI to be mapped to the same irqchip more than once.
* Allow only one to one mapping between GSI and non-irqchip routing.
*/
- hlist_for_each_entry(ei, &rt->map[ue->gsi], link)
+ hlist_for_each_entry(ei, &rt->map[gsi], link)
if (ei->type != KVM_IRQ_ROUTING_IRQCHIP ||
ue->type != KVM_IRQ_ROUTING_IRQCHIP ||
ue->u.irqchip.irqchip == ei->irqchip.irqchip)
return -EINVAL;
- e->gsi = ue->gsi;
+ e->gsi = gsi;
e->type = ue->type;
r = kvm_set_routing_entry(kvm, e, ue);
if (r)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 55fe8e20d8fd..dc8edc97ba85 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2977,12 +2977,14 @@ static int kvm_ioctl_create_device(struct kvm *kvm,
struct kvm_device_ops *ops = NULL;
struct kvm_device *dev;
bool test = cd->flags & KVM_CREATE_DEVICE_TEST;
+ int type;
int ret;
if (cd->type >= ARRAY_SIZE(kvm_device_ops_table))
return -ENODEV;
- ops = kvm_device_ops_table[cd->type];
+ type = array_index_nospec(cd->type, ARRAY_SIZE(kvm_device_ops_table));
+ ops = kvm_device_ops_table[type];
if (ops == NULL)
return -ENODEV;
@@ -2997,7 +2999,7 @@ static int kvm_ioctl_create_device(struct kvm *kvm,
dev->kvm = kvm;
mutex_lock(&kvm->lock);
- ret = ops->create(dev, cd->type);
+ ret = ops->create(dev, type);
if (ret < 0) {
mutex_unlock(&kvm->lock);
kfree(dev);